JP5224714B2 - Vehicle door frame structure - Google Patents

Description

  The present invention relates to a vehicle door frame structure.

As a conventional vehicle door frame, a vertical pillar sash extending in the vertical direction of the door and an upper sash that forms the upper edge of the door are joined to each other at the door corner portion of the upper end portion of the vertical pillar sash by welding. It has been known. However, in this end face joint structure, it took time and effort to remove the welding marks generated on the design surface of the sash by polishing finishing or the like. In patent document 1 made so that such an effort may be omitted, among the joint portions of the upper sash and the vertical pillar sash, the end portion of the design portion has a stepped fitting structure, and welding is performed on the outer surface side of the design portion. By not welding, welding at the inner step portion reduces the trouble of finishing the appearance of the design portion and secures the bonding strength.
JP 2004-338612 A

  However, in Patent Document 1, in the upper sash and the standing column sash, the frame portion located on the vehicle interior side of the design portion is joined by abutting the end faces as in the conventional case so that the joining end faces can be correctly joined. It was necessary to strictly control the accuracy of the members. Further, in the design portion of the upper sash and the vertical column sash, the end portions of the stepped portions are butted and joined, and the same accuracy control is required. Furthermore, since the stepped portion is subjected to such stepped processing on the end portion of the design portion, it takes time to manufacture. An object of the present invention is to provide a new concept door frame structure for a vehicle that is more productive than the conventional products and can provide a good appearance.

The present invention relates to a vehicle door frame structure having a vertical column sash portion extending in the vertical direction of a door and an upper sash portion forming a door upper edge portion, and a design portion that is located on the vehicle outer side of the upper sash portion and faces the vehicle outer side. An upper side design member having an upper side design member which is located on the vehicle outer side of the vertical column sash part and has a design part facing the vehicle outer side, which is a member different from the upper side design member, and the upper side design member and the vertical column side A vehicle interior frame member that is fixed to each vehicle interior side of the design member and that is continuous over both the upper sash portion and the upright column sash portion and is formed of an integral structure having no joint portion . The shape of the vehicle inner frame member in the vicinity of the boundary between the upper sash part and the upright column sash part connects the upper side frame part along the upper side design member and the upright side frame part along the vertical column side design member with an arc-shaped corner curved part It is designed to be relatively easy to manufacture and secure strength. Each of the upper side design member and the upright side design member is provided with an overlapping fixing surface portion that extends substantially parallel to the corresponding frame portion of the vehicle interior side frame member and is overlapped and fixed on the frame portion. In the area of the corner curved portion of the vehicle inner side frame member, this overlapping fixed surface portion is not provided on the upper side design member and the standing column side design member, so that interference with the corner curved portion is prevented.

  In addition, the standing column side design member includes a cover portion that closes the corner bending portion and the standing column side design member without any gap along the corner bending portion of the vehicle interior frame member, and an upper end support surface portion that is positioned above the cover portion. On the other hand, it is preferable that the upper side design member is extended to a position overlapping with the upper end support surface portion, and the upper end support surface portion of the standing column side design member is fixed to the back of the design portion of the upper side design member.

  The fixed portions of the upper side design member and the vehicle interior frame member are fixed in an overlapping manner in the vehicle vertical direction, and the fixed portions of the vertical column side design member and the vehicle interior frame member are fixed in an overlapping manner in the vehicle longitudinal direction. Is preferred. By fixing in this way, the rigidity with respect to the force which sucks out the window glass supported by the door frame to the vehicle outer side can be improved.

  The vehicle inner frame member has an open frame portion having an incomplete cylindrical cross section that is closed on the vehicle inner side and opened to the vehicle outer side, and the upper side design member and the standing column side design member are attached to the vehicle inner frame member. Sometimes it is preferable to close the opening of the open frame. Thereby, since the fixing | fixed part of each design member and the vehicle interior frame member comprises a part of cylindrical frame body, intensity | strength can be ensured with a structure without waste.

  It is preferable that a weather strip holding groove having a constant cross section that is open toward the outer edge side of the door frame is formed continuously on both the upper sash portion and the upright pillar sash portion in the vehicle inner frame member.

  The combined body of the vehicle inner frame member, the upper side design member, and the vertical column side design member has a glass run holding groove for fitting and holding the glass run and a weather strip holding groove for fitting and holding the weather strip. It is preferable in terms of appearance that the fixing portion between the inner frame member and the upper side design member and the fixing portion between the vehicle inner frame member and the upright side design member are each covered with at least one of a glass run and a weather strip.

  According to the above door frame structure of the present invention, since the vehicle inner frame member is constituted by the vehicle inner frame member that is an integrated structure that extends over both the upper sash portion and the upright column sash portion, the upper sash portion and the upright column sash portion. It is not necessary to join the vehicle inner frame portion at the boundary portion, and productivity can be greatly improved. And the vehicle inside frame member which is an integral structure which does not have a junction part contributes also to the strength improvement of a door frame.

  In addition, the upper side design member and the upright side design member located on the vehicle outer side are separate from the vehicle inner frame member, and the vehicle interior frame member can ensure the rigidity as the frame, so the design part Design flexibility is improved. For example, by extending the upper side design member to a position overlapping the upper column side design member as in claim 4 and fixing the upper end support surface portion of the vertical column side design member to the back side of the design portion of the upper side design member, The joint portion does not appear on the outer surface of the design part of each of the upper side design member and the upright side design member, and the appearance is improved. Moreover, the structure which fixes the upper end support surface part of a standing column side design member to the design part back surface side of an upper side design member is easy to manage accuracy, and can also improve productivity.

  A side door 10 of an automobile shown in FIG. 1 includes a door panel 11 and a door frame 12 formed in a frame shape on the top of the door panel 11, and includes an upper edge portion of the door panel 11 and an inner edge portion of the door frame 12. The window glass 14 moves up and down in the enclosed window portion 13. The door frame 12 includes an upper sash portion 15 that forms a door upper edge along a door opening of a roof panel 40 (shown by a two-dot chain line in FIG. 6) of the vehicle body, and a center of the vehicle body from the rear portion of the door panel 11. A side sash portion (standing column sash portion) 16 extending in the vertical direction along the pillar 41 (indicated by a two-dot chain line in FIG. 7) is provided. Note that the door 10 of the present embodiment is a front seat door, and the expressions such as the front and rear direction, the vertical direction, the inside of the vehicle, and the outside of the vehicle in the following description refer to the body of the automobile to which the front seat door 10 is attached. Means the reference direction. The frame inner edge is the edge of the door frame 12 on the side of the window 13, and “frame inner edge side” or “frame inner edge direction” means generally downward in the upper sash portion 15, and the side sash The part 16 generally means the front. Similarly, “frame outer edge side” or “frame outer edge direction” means generally upward in the upper sash portion 15 and generally rearward in the side sash portion 16.

  The door frame 12 is configured by combining a seamless frame member (vehicle inner frame member) 20, an upper side design member 21, and an upright side design member 22 shown in an exploded state in FIGS. 3 and 5. The upper side design member 21 alone constitutes a design part located on the vehicle outer side of the upper sash portion 15, and the vertical column side design member 22 is a combination of the vertical column main member 23 and the vertical column sub member 24, and the vehicle exterior side of the side sash portion 16. The design part located in is constituted. The seamless frame member 20 is connected to both the upper sash portion 15 and the side sash portion 16 without being interrupted at the door corner portion 17 (FIG. 1) at the upper end portion of the side sash portion 16 with respect to the design portion located outside the vehicle. It is formed as a one-piece structure that extends continuously, and constitutes the vehicle interior frame portion of substantially the entire door frame 12.

  6 and 7, the seamless frame member 20 includes a pair of hook portions 20a and 20b that are spaced apart and opposed to the vehicle outer side and the vehicle inner side, and a planar shape that connects the hook portions 20a and 20b. The inner weather strip holding groove 26 opened toward the outer edge of the frame is formed in a region surrounded by the hook portions 20a, 20b and the groove bottom surface portion 20c. . The seamless frame member 20 is also surrounded on the bottom side of the strip holding groove 26 by four sides of the groove bottom surface portion 20c, the vehicle inner side wall portion 20d, the inner edge wall portion 20e, and the folded wall portion 20f, and the folded wall portion 20f and the groove bottom surface portion. An open frame portion having an incomplete cylindrical (box shape) cross section having a frame opening portion 20g between 20c. Specifically, the vehicle inner wall portion 20d extends from the hook portion 20b toward the frame inner edge portion, and the inner edge wall portion 20e extends from the edge of the vehicle inner wall portion 20d toward the vehicle outer side. A flat folded wall portion 20f is bent from the edge of the portion 20e toward the outer edge of the frame, and the edge of the folded wall portion 20f is joined to or connected to other portions of the seamless frame member 20 without opening the frame opening 20g. Is formed. The seamless frame member 20 also includes a retaining step portion 20h located on the back side (the vehicle outer side) of the hook portion 20a, and a folded portion that is located between the retaining step portion 20h and the hook portion 20a and protrudes toward the outer edge of the frame. A protrusion 20i is formed.

  As shown in FIG. 6, the upper design member 21 includes a flange-shaped design surface portion 21 a located on the outermost side of the vehicle, and a hook portion that protrudes from the upper end portion of the design surface portion 21 a toward the vehicle inner side. 21b, a planar groove bottom surface portion 21c following the hook portion 21b, a planar first fixed fin (overlapping fixed surface portion) 21d extending further from the groove bottom surface portion 21c to the vehicle interior side, and a lower end of the design surface portion 21a A retaining step portion 21e formed from the portion toward the inside of the vehicle, a planar groove bottom surface portion 21f following the retaining step portion 21e, and formed following the groove bottom surface portion 21f so as to face the retaining step portion 21e. The retaining step portion 21g is positioned, and a planar second fixing fin (overlapping fixing surface portion) 21h extending from the retaining step portion 21g toward the inner edge of the frame. A region surrounded by the retaining step portion 21e, the groove bottom surface portion 21f, the retaining step portion 21g, and the second fixed fin 21h constitutes a glass run holding groove 28 that is open toward the inner edge of the frame. Further, the hook portion 21b and the groove bottom surface portion 21c constitute an outer weather strip holding groove 27 opened toward the frame outer edge side. The outer weather strip holding groove 27 is connected to the seamless frame member 20 and the upper portion as will be described later. The side design member 21 is combined, and the removal preventing step portion 20h of the seamless frame member 20 is positioned to face the hook portion 21b.

  As shown in the cross-sectional shape of FIG. 7, the vertical column main member 23 constituting the vertical column side design member 22 includes a design surface portion 23 a facing the vehicle outer side, and a connection wall portion extending from the design surface portion 23 a toward the vehicle inner side. 23b and a planar fixing fin (overlapping fixing surface portion) 23c that is inclined so as to approach the inner edge of the frame as it goes from the connection wall portion 23b to the vehicle inner side. The vertical column sub member 24 includes a design surface portion 24a facing the vehicle exterior side, a vehicle interior side wall portion 24b positioned on the vehicle interior side facing the design surface portion 24a, and a groove bottom surface portion 24c connecting the design surface portion 24a and the vehicle interior sidewall portion 24b. The region surrounded by the design surface portion 24a, the vehicle interior side wall portion 24b, and the groove bottom surface portion 24c constitutes a glass run holding groove 29 opened to the frame inner edge side. . Stopping step portions 24d and 24e are respectively formed on opposing surface portions of the design surface portion 24a and the vehicle interior side wall portion 24b, and the vehicle inner wall portion 24b has a planar shape at an end portion on the frame inner edge side following the separation step portion 24e. The fixed fin (superimposed fixed surface portion) 24f is formed. The vertical pillar main member 23 and the vertical pillar sub member 24 are integrated with the vertical pillar side design member 22 with the connecting wall portion 23b and the groove bottom surface portion 24c fixed thereto. The standing column side design member 22 has a garnish 30 (shown in phantom lines in FIG. 7) as an appearance member so as to cover the outside of the design surface portion 23a and the design surface portion 24a in a state where the door frame 12 is completed. It is attached.

  The upper sash portion 15 is configured by combining the seamless frame member 20 and the upper side design member 21. As shown in FIG. 6, the first fixed fin 21d is overlapped on the lower surface side of the groove bottom surface portion 20c, the second fixed fin 21h is overlapped on the vehicle outer side surface of the folded wall portion 20f, and these overlapped surface portions are fixed and seamless. The frame member 20 and the upper design member 21 are combined. Laser welding is preferably used as a method for fixing such an overlapping surface continuous in the longitudinal direction of the sash. In the state where the seamless frame member 20 and the upper side design member 21 are combined, the frame opening 20g is blocked by a part of the upper side design member 21, and the groove bottom surface part 20c, the vehicle interior side wall part 20d, the inner edge wall part 20e, and the folding A vehicle interior frame portion of the upper sash portion 15 having a cylindrical (bag shape) hollow cross section surrounded by the wall portion 20f, the first fixed fin 21d, the retaining step portion 21g, and the second fixed fin 21h is completed. Further, as described above, in the state where the seamless frame member 20 and the upper design member 21 are combined, the retaining step portion 20h is positioned facing the hook portion 21b, and the outer weather strip holding groove 27 is formed.

  The side sash portion 16 is configured by combining the seamless frame member 20 and the standing column side design member 22. As shown in FIG. 7, the fixing fin 23c is overlapped on the lower surface side of the groove bottom surface portion 20c, the fixing fin 24f is overlapped on the vehicle outer side surface of the folded wall portion 20f, and these overlapping surface portions are fixed to the seamless frame member 20. The upright column side design member 22 is combined. Similarly to the fixing of the seamless frame member 20 and the upper design member 21, it is preferable to use laser welding for fixing the seamless frame member 20 and the upright design member 22. In a state where the seamless frame member 20 and the upright column side design member 22 are combined, the frame opening 20g is blocked by a part of the upright column side design member 22, and the groove bottom surface portion 20c, the vehicle interior side wall portion 20d, the inner edge wall portion 20e, and the folding back. A vehicle interior frame portion of the side sash portion 16 having a cylindrical (bag-like) hollow cross section surrounded by the wall portion 20f, the fixing fin 23c, the retaining step portion 24e, and the fixing fin 24f is completed.

  The connection structure of the seamless frame member 20, the upper side design member 21, and the upright side design member 22 extends over substantially the entire area of the upper sash portion 15 and the side sash portion 16. It has a different structure. As shown in FIGS. 2 to 5, in the vicinity of the door corner portion 17, the seamless frame member 20 includes an upper side frame portion 20 </ b> L <b> 1 and a vertical column side frame portion along the longitudinal direction of the upper side design member 21 and the vertical column side design member 22. 20L2, and an arcuate corner bending portion 20R is positioned between the upper frame portion 20L1 and the upright frame portion 20L2. The inner weather strip holding groove 26 is formed without interruption even on the corner curved portion 20R.

  The upper side design member 21 extends substantially linearly along the upper side frame portion 20L1 of the seamless frame member 20 in the vicinity of the door corner portion 17. The upper side design member 21 basically has a uniform cross-sectional shape, but at the end portion (rear end portion) of the corner curved portion 20R of the seamless frame member 20 to the seamless frame member 20. The first fixing fin 21d, the retaining step 21g, and the second fixing fin 21h related to the fixing of the surface are cut out, the design surface portion 21a, the retaining step portion 21g, the groove bottom surface portion 21c, the hook portion 21b, the retaining step portion 21e, and the groove bottom surface. Only the portion 21 f is left and extends to the upper position of the standing column side design member 22. In the standing column side design member 22, the fixing fins 23 c of the standing column main design member 23 are not cut to the upper end portion of the standing column side design member 22 and are cut below the start portion of the corner curved portion 20 </ b> R of the seamless frame member 20. The portion of the upright column main member 23 excluding the fixed fins 23 c extends to the upper end of the upright column side design member 22. Further, the upper end portion of the upright column sub-member 24 is also interrupted up to substantially the same height as the fixed fin 23c. That is, in both the upper side design member 21 and the upright column side design member 22, the overlapping fixing surface portion of the seamless frame member 20 with the upper side frame portion 20L1 and the upright column side frame portion 20L2 is cut off in the formation region of the corner curved portion 20R. Or formed so as not to exist in advance. Thereby, it is possible to provide the corner curved portion 20R on the seamless frame member 20 without causing interference between the upper side design member 21 and the vertical column side design member 22 each of which is formed substantially linearly up to the end portion. It has become.

  A cover portion 23d is formed above the upper end position of the fixed fin 23c (and the vertical column sub member 24) in the vertical column main member 23 so as to block the space between the corner curved portion 20R of the seamless frame member 20 and the vertical column side design member 22 without any gap. Has been. The cover portion 23d has a curved surface portion 23e having a shape along the folding protrusion 20i on the corner curved portion 20R, and the standing column side design member 22 is coupled to the seamless frame member 20 as shown in FIG. Then, the curved surface part 23e overlaps with the folding protrusion 20i of the corner curved part 20R.

  The vertical pillar main member 23 is further provided with an upper end support surface portion 23f substantially parallel to the groove bottom surface portion 21f of the upper side design member 21 on the upper side of the cover portion 23d. The upper side design member 21 extends from the cut portion of the first fixed fin 21d and the second fixed fin 21h described above to a position where the previous (rear) region overlaps the upper end support surface portion 23f. The portion 21f is fixed so as to overlap the upper end support surface 23f. Such a structure for fixing the overlapping surface portion is easy to perform accuracy control and can be easily fixed. Moreover, since the contact area can be widened, it is easy to ensure the strength of the joint portion.

  As shown in FIGS. 6 and 7, the inner frame weather strip 31, the outer frame 12, and the door frame 12 configured by combining the seamless frame member 20, the upper side design member 21, and the upright side design member 22 as described above. A side weather strip 32 and glass runs 33, 34 are attached.

  The inner-side weather strip 31 has a hollow seal portion 31a and a pair of fitting legs 31b and 31c, and the fitting leg 31b and the fitting legs with respect to the hook portion 20a and the hook portion 20b of the seamless frame member 20. The inner weather strip holding grooves 26 are held by engaging the respective 31c. The inner weather strip holding groove 26 formed on the seamless frame member 20 is continuous from the upper sash portion 15 to the side sash portion 16 without being interrupted at the door corner portion 17, and fits into the inner weather strip holding groove 26. The inner side weather strip 31 is also seamlessly arranged with a constant cross section across the upper sash portion 15 and the side sash portion 16.

  Unlike the inner side weather strip 31, the outer side weather strip 32 is provided only in the upper sash portion 15. The outer side weather strip 32 has a lip portion 32 a and a pair of fitting leg portions 32 b and 32 c, and is fitted to the retaining step portion 20 h of the seamless frame member 20 and the groove bottom surface portion 21 c of the upper side design member 21. By engaging the portion 32b and the fitting leg portion 32c, the outer weather strip holding groove 27 is held.

  Each of the inner side weather strip 31 and the outer side weather strip 32 is formed of a rubber material that can be elastically deformed. With the door 10 closed, the hollow seal portion 31a of the inner side weather strip 31 is elastically deformed by contacting the roof panel 40 (FIG. 6) and the center pillar 41 (FIG. 7) of the vehicle body, and the outer side weather strip. The lip portion 32a of 32 is brought into contact with the roof panel 40 and is elastically deformed to prevent water droplets from entering the inside of the vehicle. The vehicle body is further provided with a body-side seal member 42 (indicated by a two-dot chain line in FIG. 6). When the door 10 is closed, the hollow seal portion of the body-side seal member 42 is the inner wall portion of the seamless frame member 20. The body side seal member 42 prevents the ingress of water droplets to the inside of the vehicle.

  The glass run 33 includes a pair of lip portions 33a, a pair of fitting leg portions 33b and 33c, and a bottom portion 33d positioned between the pair of fitting leg portions 33b and 33c. The bottom portion 33d is a groove bottom surface portion 21f. And is held in the glass run holding groove 28 of the upper side design member 21. The retaining step portion 21e and the retaining step portion 21g of the glass run holding groove 28 regulate the movement of the fitting leg portion 33b and the fitting leg portion 33c toward the inner edge of the frame, respectively, and the glass run 33 is dropped from the glass run holding groove 28. Is regulated. The glass run 34 has a pair of lip portions 34a, a pair of fitting leg portions 34b and 34c, and a bottom portion 34d positioned between the pair of fitting leg portions 34b and 34c, and the bottom portion 34d is connected to the connecting wall portion 23b. Is held in the glass run holding groove 29 of the upright column sub-member 24. The retaining step 24d and the retaining step 24e of the glass run holding groove 29 regulate the movement of the fitting leg 34b and the fitting leg 34c toward the inner edge of the frame, respectively. Dropout is regulated. The glass runs 33 and 34 are formed of an elastically deformable rubber material or the like, and the lip portions 33a and 34a and the bottom portions 33d and 34d have a window according to the amount of advancement (rise) of the window glass 14 into the window portion 13. The glass 14 is elastically deformed by contact with the glass 14 and elastically holds the window glass 14.

  As described above, in the upper sash portion 15, the first fixed fin 21d is overlapped on the lower surface side of the groove bottom surface portion 20c, and the second fixed fin 21h is overlapped on the vehicle outer side surface of the folded wall portion 20f. Are fixed by a technique such as laser welding, and the seamless frame member 20 and the upper side design member 21 are combined. Among these overlapping fixed portions, the groove bottom surface portion 20c and the first fixing fin 21d constitute the bottom surface portion of the inner weather strip holding groove 26, and when the door frame is completed, the bottom surface portion (the groove bottom surface portion 20c and the first fixing fin 21d). 1 fixed fin 21 d) is covered by the inner side weather strip 31. Further, the second fixed fin 21h and the folded wall portion 20f constitute a side wall portion of the glass run holding groove 28. When the door frame is completed, the side wall portion (the second fixed fin 21h and the folded wall portion 20f) is made of glass. Covered by a run 33. That is, the fixed portion of the seamless frame member 20 and the upper side design member 21 in the upper sash portion 15 is covered with the inner side weather strip 31 and the glass run 33 so that the fixed portion does not appear on the appearance. Thereby, the appearance of the upper sash portion 15 is improved, and sufficient waterproofness can be secured even though the frame structure is a split type.

  The side sash portion 16 has a similar structure. As described above, in the side sash portion 16, the fixing fins 23c are overlapped on the lower surface side of the groove bottom surface portion 20c, the fixing fins 24f are overlapped on the vehicle outer side surface of the folded wall portion 20f, and these overlapping surface portions are laser welded or the like. The seamless frame member 20 and the upright column side design member 22 are combined by fixing by the above method. Of these overlapping fixed portions, the groove bottom surface portion 20c and the fixing fin 23c constitute the bottom surface portion of the inner weather strip holding groove 26, and when the door frame is completed, the bottom surface portion (the groove bottom surface portion 20c and the fixing fin 23c). ) Is covered by the inner side weather strip 31. The fixed fin 24f and the folded wall portion 20f constitute a side wall portion of the glass run holding groove 29. When the door frame is completed, the side wall portion (the fixed fin 24f and the folded wall portion 20f) is covered by the glass run 34. Is called. That is, the fixed portion of the seamless frame member 20 and the upright column side design member 22 in the side sash portion 16 is covered with the inner side weather strip 31 and the glass run 34 so that the fixed portion does not appear in the appearance. Thereby, the appearance of the side sash portion 16 is improved, and sufficient waterproofness can be secured even though the frame structure is a split type.

  As described above, the door frame structure of the present embodiment forms the door frame 12 by combining the design part located on the outside of the vehicle and the frame part located on the inside of the car as separate members, and combining them with the outside of the car. For the design part, the upper side design member 21 of the upper sash part 15 and the vertical side design member 22 of the vertical pillar sash part 16 are separate members, and the vehicle interior frame part extends over both the upper sash part 15 and the vertical pillar sash part 16. It is constituted by a seamless frame member 20 having a continuous monolithic structure. Thereby, in the vehicle inner side frame part (seamless frame member 20), the welding joining in the boundary part of the upper sash part 15 and the upright pillar sash part 16 becomes unnecessary, and it can improve productivity. Regarding the connection of the upper side design member 21 and the upright side design member 22 to the seamless frame member 20, the planar fixing fins 21d, 21h, 23c, and 24f extending in the longitudinal direction of the respective sash portions are similarly planar. Since the structure is fixed by being overlapped with the groove bottom surface portion 20c and the folded wall portion 20f, accuracy control is easy and the fixing work can be easily performed, and sufficient strength can be secured by a wide bonding area.

  In addition, the upper side design member 21 and the upright side design member 22 positioned on the outer side of the vehicle can be set in a shape that is not restricted by the seamless frame member 20 and at the same time, the basic rigidity can be ensured as a frame. Therefore, the design freedom of the design part of the door frame is improved. For example, when manufacturing doors for different vehicle types, a seamless frame member 20 is used in common, and the upper side design member 21 and the vertical column side design member 22 can be made different for each vehicle type. As a result, it is possible to provide various types of exterior doors while reducing manufacturing costs.

  The structure of the door corner portion 17 is particularly cited as a point indicating the high degree of design freedom of the design portion in the door frame 12 of the present embodiment. In the door corner portion 17 of the door frame 12, the upper side design member 21 does not follow the arc shape of the corner curved portion 20 </ b> R of the seamless frame member 20, and the upper end portion (upper end support surface portion 23 f) of the standing column side design member 22. It extends in a straight line to the overlapping position. The upper design member 21 and the upright design member 22 are joined by bringing the groove bottom surface portion 21f and the upper end support surface portion 23f into contact with each other at a position behind the design surface portion 21a. That is, since there is no fixed region with the vertical column side design member 22 on the design surface portion 21a, no welding marks or the like remain, and the design surface portion 21a is evenly passed to the door corner portion 17 without interruption. So it looks good. Further, not only the appearance is good, but also the joining portion of the upper side design member 21 and the upright side design member 22 is formed by connecting the planar groove bottom surface portion 21f and the upper end support surface portion 23f facing each other in the longitudinal direction of the upper side design member 21. Since they are superposed, it is easy to manage the accuracy of joints and is excellent in productivity.

  FIG. 8 shows a different embodiment of the door frame structure according to the invention. Similarly to the previous embodiment, the door frame of this embodiment constitutes the upper side design member 121 constituting the outer side design part of the upper sash part and the outer side design part of the side sash part (stand column sash part). Standing column side design member (not shown), and a seamless frame member of an integrated structure that is fixed to the vehicle interior side of these upper side design member 121 and the standing column side design member and is continuous over both the upper sash portion and the side sash portion ( The vehicle interior frame member) 120 is combined. Since FIG. 8 shows a cross section of the upper sash portion, the standing column side design member of the side sash portion is not shown in the figure, but the portion not particularly described has the same configuration as the previous embodiment. To do.

  The seamless frame member 120 shown in FIG. 8 has a pair of hook portions 120a, 120b facing the vehicle outer side and the vehicle inner side, and a planar groove bottom surface portion 120c connecting the hook portions 120a, 120b. An area surrounded by the hook portions 120a and 120b and the groove bottom surface portion 120c is an inner-side weather strip holding groove 126 that is open toward the outer edge of the frame. The bottom side of the strip holding groove 126 is surrounded by four sides of the groove bottom surface portion 120c, the vehicle inner wall portion 120d, the inner edge wall portion 120e, and the folded wall portion 120f, and a frame opening is formed between the folded wall portion 120f and the groove bottom surface portion 120c. An open frame portion having an incomplete cylindrical (box shape) cross section having a portion 120g is formed. An inclined surface portion 120h is extended upward from the hook portion 120a, and a folding protrusion 120i is formed at the upper end of the inclined surface portion 120h.

  The upper side design member 121 of FIG. 8 includes a flange-shaped design surface portion 121a positioned on the outermost side of the vehicle, a hook portion 121b formed to protrude from the upper end portion of the design surface portion 121a toward the vehicle interior, and the hook portion 121b. A flat groove bottom surface portion 121c that follows the hook portion 121b and the groove bottom surface portion 121c, and a region surrounded by the folded projection 120i of the seamless frame member 120 is opened toward the frame outer edge side. It is an outer side weather strip holding groove 127. Unlike the upper side design member 2001 of the previous embodiment, in the upper side design member 121, fins and the like for fixing to the seamless frame member 120 are not extended beyond the groove bottom surface portion 121c (inside the vehicle). First, the groove bottom surface portion 121c is interrupted at a position below the folding protrusion 120i.

  The upper side design member 121 is also provided with a glass run holding groove 128 opened toward the inner edge of the frame below the outer side weather strip holding groove 127. The glass run holding groove 128 includes a first retaining step portion 121d formed from the lower end portion of the design surface portion 121a toward the vehicle inner side, and a planar groove bottom surface portion 121e following the first retaining step portion 121d. The first fixed surface portion 121f following the groove bottom surface portion 121e, the second retaining step portion 121g and the third retaining step portion 121h formed on the inner wall surface portion following the inclined surface portion 121f, and the third This is surrounded by a second fixed surface portion 121i extending from the retaining step portion 121h toward the inner edge of the frame.

  The seamless frame member 120 and the upper design member 121 are combined by overlapping the inclined surface portion 120h and the first fixed surface portion 121f, overlapping the folded wall portion 120f and the second fixed surface portion 121i, and fixing these overlapping surface portions. It is. Laser welding is preferably used for fixing the overlapping surface portion. By combining the seamless frame member 120 and the upper side design member 121 in this way, the frame opening 120g is blocked by a part of the upper side design member 121, and a cylindrical shape ( A vehicle-side frame portion having a hollow cross-section is completed.

  The weather strip 50 shown in FIG. 8 has an integral structure in which the inner side hollow seal portion 131 and the outer side lip portion 132 are connected by the connecting portion 51. The inner-side hollow seal portion 131 has a pair of fitting legs 131a and 131b that are engaged with the hook portions 120a and 120b and retained against the inner-side weather strip holding groove 126. The outer lip part 132 has a fitting leg part 132a that engages with the hook part 121b and is held out against the outer side weather strip holding groove 127. Each of the inner side hollow seal portion 131 and the outer side lip portion 132 is elastically deformed when coming into contact with the roof panel 40 of the vehicle body.

  The glass run 133 shown in FIG. 8 has a pair of lip portions 133a, a holding leg portion 133b, a holding lip 133c, a holding leg portion 133d, and a bottom portion 133e, and the holding leg portion 133b, the holding lip 133c, The holding leg portion 133d is held in the glass run holding groove 128 by engaging the first to third retaining step portions 121d, 121g and 121h, respectively. In this holding state, the bottom portion 133e of the glass run 133 faces the groove bottom surface portion 121e in a separated state. Although not shown in FIG. 8, the glass run 133 elastically holds its edge when the window glass is closed.

  FIG. 9 shows still another embodiment of the door frame structure to which the present invention is applied. 9, parts common to those in FIG. 8 are denoted by the same reference numerals and description thereof is omitted. The upper sash portion of the door frame shown in FIG. 9 is a so-called glass run hidden type design portion in which the glass run 133 ′ is extended to the frame outer edge side so as to cover the design surface portion 121 a ′ of the upper design member 121 ′. It has become.

  The upper side design member 121 ′ is configured such that the bottom surface portion of the outer side weather strip holding groove 127 and the glass run holding groove 128 is a common groove bottom surface portion 121 c ′. This is substantially the same structure as the upper side design member 121 of FIG. The lower end portion of the first retaining step 121d 'is an edge that is bent to the outside of the vehicle.

  In addition to the main body portion held in the glass run holding groove 128, the glass run 133 ′ has a glass run appearance portion 135 covering the outside of the design surface portion 121 a ′ and an outer held in the outer side weather strip holding groove 127. The side lip portion 132 'is integrally formed. The inner side hollow seal portion 131 ′ is formed separately from the outer side lip portion 132 ′ of the glass run 133 ′ and is held in the inner side weather strip holding groove 126. The outer side lip portion 132 'constitutes a weather strip that elastically contacts the roof panel 40 together with the inner side hollow seal portion 131', and is fitted to the hook portion 121b 'of the upper side design member 121'. A mating leg portion 132a 'is formed, and an inner edge of the vehicle opposite to the fitting leg portion 132a' is engaged with the folded-back protrusion 120i 'of the seamless frame member 120'. The seamless frame member 120 ′ has the same configuration as the seamless frame member 120 of the embodiment of FIG. 8 except that the region extending from the folded protrusion 120 i ′ to the inclined surface portion 120 h ′ is formed linearly.

  The seamless frame member 120 ′ and the upper design member 121 ′ overlap the inclined surface portion 120 h ′ and the first fixed surface portion 121 f, and the folded wall portion 120 f and the second fixed surface portion 121 i, respectively. It is integrated by fixing. In the embodiment of FIG. 9, weight reduction is achieved by sharing the bottom surfaces of the outer-side weather strip holding groove 127 and the glass run holding groove 128 as the groove bottom surface portion 121 c ′.

  In general, a suction force to the outside of the vehicle acts on the window glass supported by the door frame when the vehicle is traveling at high speed. FIG. 10 shows an embodiment in which the rigidity against the glass sucking force is increased. In FIG. 10, parts common to those in FIG. 6 are denoted by the same reference numerals, and description of overlapping parts is omitted.

  The seamless frame member (vehicle inner frame member) 220 and the upper side design member 221 shown in FIG. 10 have a groove bottom surface portion 20c and a first fixing fin 21d constituting the bottom surface portion of the inner weather strip holding groove 26 fixed thereto. Is common to the seamless frame member 20 and the upper side design member 21 of FIG. When the overlapping fixed portion formed by the groove bottom surface portion 20c and the first fixed fin 21d is the first fixed portion, the configuration of the second fixed portion is different in the form of FIG. The seamless frame member 220 does not include a portion corresponding to the folded wall portion 20f of the seamless frame member 20 of FIG. 6, and the front end portion (the edge portion facing the vehicle exterior) of the inner edge wall portion 20e is folded by about 180 degrees. This is a portion 220f. On the other hand, the upper side design member 121 does not fix the standing wall portion 221h corresponding to the second fixing fin 21h of the upper side design member 21 of FIG. 6 to the seamless frame member 220, and faces the vehicle interior side from the standing wall portion 221h. The step portion 221i that engages with the folding portion 220f and the second fixed fin 221j that overlaps the inner edge wall portion 20e following the step portion 221i. The inner edge wall portion 20e and the second fixed fin 221j are fixed by laser welding or the like, and the fixed portion becomes the second fixed portion. That is, the seamless frame member 220 and the upper side design member 121 have a first fixing portion (the groove bottom surface portion 20c and the first fixing fin 21d) and a second fixing portion (the inner edge wall portion 20e and the second fixing fin 221j). Each is a fixed portion that is plate-matched in the vehicle vertical direction (direction substantially orthogonal to the door thickness direction). Thus, if it is the fixing | fixed part piled up and down, high rigidity can be acquired with respect to the force which acts on a door thickness direction. In particular, when the vehicle is traveling at high speed, a suction force to the outside of the vehicle acts on the glass run 33 via the wind glass 14, but the strength is surely ensured if the fixing portion is the inner edge wall portion 20e and the second fixing fin 221j. be able to.

  10 illustrates the upper sash portion as an example, but the side sash portion can also increase the rigidity against the glass sucking force toward the outside of the vehicle by the same structure. Although not shown, the fixed portion of the seamless frame member 20 and the vertical column sub member 24 in FIG. 7 is configured not to overlap in the door thickness direction like the folded wall portion 20f and the fixed fin 24f but to overlap in the vehicle longitudinal direction. do it.

  As can be seen from the embodiments of FIGS. 8 to 10 described above, in the door frame structure of the present invention, the fixing position between the frame member on the inside of the vehicle and the design member on the outside of the vehicle has the required strength and each member. It is possible to set a desired position according to the conditions such as the cross-sectional shape.

  Although the present invention has been described based on the illustrated embodiment, the present invention is not limited to the illustrated embodiment, and can be improved or modified without departing from the gist of the invention. Although the illustrated embodiment is applied to a side door for a front seat of an automobile, the present invention is not limited to a front seat door as long as it is a door frame of a type provided with a vertical pillar sash and an upper sash. Even doors for seats and other doors can be applied.

It is a side view of the vehicle door to which the door frame structure of the present invention is applied. FIG. 2 is a perspective view of the vicinity of a boundary between an upper sash portion and a side sash portion in the vehicle door of FIG. 1 as viewed from the vehicle inner side. It is the disassembled perspective view seen from the vehicle inner side of the boundary part vicinity. It is the perspective view which looked at the boundary part vicinity from the vehicle outer side. It is the disassembled perspective view seen from the vehicle outer side of the boundary part vicinity. It is sectional drawing of the upper sash part which follows the AA sectional line of FIG. It is sectional drawing of the side sash part which follows the BB sectional line of FIG. It is sectional drawing of the upper sash part which shows different embodiment of the door frame structure of this invention. It is sectional drawing of the upper sash part which shows further another embodiment of the door frame structure of this invention. It is sectional drawing of the upper sash part which shows further another embodiment of the door frame structure of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Door 11 Door panel 12 Door frame 13 Window part 14 Window glass 15 Upper sash part 16 Side sash part (standing pillar sash part)
20 Seamless frame member (car interior frame member)
20c Groove bottom face (superimposed fixing face on the seamless frame member side)
20f Folding wall part (superimposed fixed surface part on the seamless frame member side)
20g Frame opening 20L1 Upper side frame part 20L2 Standing column side frame part 20R Corner curved part 21 Upper side design member 21a Design surface part 21d First fixing fin (overlapping fixed surface part on the upper side design member side)
21h Second fixing fin (superimposed fixing surface portion on the upper side design member side)
22 Standing column side design member 23 Standing column main member 23a Design surface portion 23c Fixing fin (overlapping fixing surface portion on the standing column main member side)
23d Cover portion 23e Curved surface portion 23f Upper end support surface portion 24 Standing column sub-member 24a Design surface portion 24f Standing column main member (superimposed fixing surface portion on the standing column sub member side)
26 Inner weather strip retaining groove 27 Outer weather strip retaining groove 28 29 Glass run retaining groove 31 Inner side weather strip 32 Outer side weather strip 33 34 Glass run 50 Weather strip 120 120 ′ Seamless frame member (vehicle inner frame member)
120f Folding wall part (superimposed fixing surface part on the seamless frame member side)
120h 120h 'Inclined surface portion (superimposed fixed surface portion on the seamless frame member side)
121 121 ′ Upper-side design member 121f First fixed surface portion (overlapping fixed surface portion on the upper-side design member side)
121i 2nd fixed surface part (superimposed fixed surface part on the upper side design member side)
131 Inner side hollow seal part 132 132 'Outer side lip part 133 133' Glass run 135 Glass run appearance part 220 Seamless frame member (vehicle inner frame member)
220f Folding part 221 Upper design member 221h Standing wall part 221i Step part 221j Second fixing fin

Claims (6)

In a vehicle door frame structure having a vertical pillar sash portion extending in the vertical direction of the door and an upper sash portion forming an upper edge of the door, the upper is located on the vehicle outer side of the upper sash portion and has a design portion facing the vehicle outer side. With side design members;
A standing column side design member which is located on the vehicle outer side of the vertical column sash portion and has a design portion facing the vehicle outer side, which is a member different from the upper side design member;
A vehicle inner frame member made of an integrated structure having no joint portion, which is fixed to the vehicle inner side of each of the upper side design member and the vertical column side design member and is continuous over both the upper sash portion and the vertical column sash portion; Have
The vehicle interior frame member includes an upper frame portion along the upper design member, a vertical frame portion along the vertical design member, and the upper frame portion and the vertical column side at the boundary between the upper sash portion and the vertical sash portion. It has an arcuate corner curved part that connects the frame part,
The upper side design member has an overlapping fixing surface portion that extends substantially parallel to the upper side frame portion of the vehicle inner side frame member and is fixed by being overlapped with the upper side frame portion, and the vertical column side design member is the vehicle inner side frame member Each of the upper side design member and the vertical column side design member in the region of the corner bending portion. A vehicle door frame structure characterized by not including the overlapping fixing surface portion . The vehicle door frame structure according to claim 1 ,
The vertical column side design member has a cover portion that closes the corner curved portion and the vertical column side design member without gaps along the corner curved portion of the vehicle interior frame member, and an upper end support surface portion that is positioned above the cover portion. ,
The upper side design member extends to a position overlapping the upper end support surface portion, and the upper end support surface portion of the standing column side design member is fixed to the back of the design portion of the upper side design member. The vehicle door frame structure according to claim 1 or 2 ,
The fixed portions of the upper side design member and the vehicle interior frame member are fixed in an overlapping manner in the vehicle vertical direction, and the fixed portions of the vertical column side design member and the vehicle interior frame member are fixed in an overlapping manner in the vehicle longitudinal direction. A vehicle door frame structure characterized by The vehicle door frame structure according to any one of claims 1 to 3 ,
The vehicle inner frame member has an open frame portion having an incomplete cylindrical cross section that is closed on the vehicle inner side and opened to the vehicle outer side, and the upper side design member and the standing column side design member are attached to the vehicle inner frame member. A vehicle door frame structure characterized in that an opening of the open frame is sometimes closed. The vehicle door frame structure according to any one of claims 1 to 4 ,
A vehicle characterized in that a weatherstrip holding groove having a constant cross section opened toward the outer edge side of the door frame is formed continuously on both the upper sash part and the upright pillar sash part on the inner frame member. Door frame structure. The vehicle door frame structure according to any one of claims 1 to 5 ,
The vehicle interior frame member, the upper side design member, and the vertical column side design member have a glass run holding groove for fitting and holding the glass run and a weather strip holding groove for fitting and holding the weather strip. The door frame structure is characterized in that the fixed portion of the upper side design member and the fixed portion of the vehicle interior frame member and the upright side design member are each covered with at least one of a glass run and a weather strip.

Images