Door frame

Abstract

The door frame includes a column, an upper frame, a frame molding, and a welding portion. The column has a first abutting surface located at a corner portion on the upper side of the door and a first outer surface facing outward in the vehicle width direction. The upper frame has a second abutting surface located at the corner portion and abutting against the first abutting surface and a second outer surface facing outward in the vehicle width direction and adjacent to the first outer surface. The frame molding extends along the upper frame, covers the outer side of the upper frame in the vehicle width direction, and has an inner surface facing the first outer surface and the second outer surface with a gap therebetween. The welding portion is located at a boundary portion between the first outer surface and the second outer surface, extends along the first abutting surface and the second abutting surface, faces the inner surface, and joins the column to the upper frame. The welding portion has at least one of an upper end that is away from the upper edge of the upper frame downward and a lower end that is away from the lower edge of the upper frame upward.

Description

Technical Field

[0001] The invention relates to a vehicle door frame. Background Art

[0002] Conventionally, there is known a door frame in which an upper frame and a pillar are welded at a corner portion on the upper rear side of the door frame.

[0003] In the above-mentioned door frame, if the welding portion between the upper frame and the column is close to the upper edge or the lower edge of the upper frame, for example, in order to avoid interference with the surrounding parts of the upper frame, it is necessary to cut or grind the weld formed at the welding portion with higher precision, which may cause undesirable conditions such as increased manufacturing troubles. Summary of the invention

[0004] Therefore, one of the objects of the present invention is to obtain a door frame capable of reducing the inconvenience caused by the welded portion between the upper frame and the pillar being close to the upper edge or the lower edge of the upper frame.

[0005] summary

[0006] The vehicle door frame of the present invention, for example, comprises: a column having a first abutting surface located in a corner portion on the upper side of the vehicle door and a first outer surface facing outward in a vehicle width direction; an upper frame having a second abutting surface located in the above-mentioned corner portion and abutting against the above-mentioned first abutting surface and a second outer surface facing outward in the vehicle width direction and adjacent to the above-mentioned first outer surface; a frame molding, which extends along the above-mentioned upper frame and covers the outer side of the above-mentioned upper frame in the vehicle width direction and has an inner surface facing the above-mentioned first outer surface and the above-mentioned second outer surface with a gap therebetween; and a welding portion, which is located in a boundary portion between the above-mentioned first outer surface and the above-mentioned second outer surface and extends along the above-mentioned first abutting surface and the above-mentioned second abutting surface, facing the above-mentioned inner surface, and joining the above-mentioned column to the above-mentioned upper frame, the above-mentioned welding portion having at least one of an upper end that is separated downward from the upper edge of the above-mentioned upper frame and a lower end that is separated upward from the lower edge of the above-mentioned upper frame.

[0007] In the above-mentioned door frame, for example, the above-mentioned second outer surface is a plane or a curved surface protruding outward in the vehicle width direction, and the above-mentioned upper frame has: an upper end surface, which is a curved surface protruding upward with a smaller curvature radius than the above-mentioned second outer surface, and constitutes the above-mentioned upper edge; a lower end surface, which is a curved surface protruding downward with a smaller curvature radius than the above-mentioned second outer surface, and constitutes the above-mentioned lower edge; an upper side boundary, which is a boundary between the above-mentioned second outer surface and the above-mentioned upper end surface; and a lower side boundary, which is a boundary between the above-mentioned second outer surface and the above-mentioned lower end surface, and the above-mentioned welding part has: at least one of the above-mentioned upper end located at the above-mentioned upper side boundary or located below the upper side boundary and the above-mentioned lower end located at the above-mentioned lower side boundary or located above the lower side boundary.

[0008] The door frame includes, for example, an intervening object interposed between the second outer surface and the inner surface at a position away from the second abutting surface.

[0009] The door frame includes, for example, an end cover having a cover portion covering an end portion of the frame molding and an intervening portion interposed between at least one of the first outer surface and the second outer surface and the inner surface.

[0010] In the door frame, for example, the welded portion extends in an inclined direction intersecting the up-down direction and the horizontal direction.

[0011] In the above-mentioned door frame, for example, the above-mentioned upper frame has: a vertical wall extending in the up and down directions and in the long side direction of the upper frame; and a hooking portion protruding inward in the vehicle width direction from a position away from the above-mentioned upper edge of the above-mentioned vertical wall downward, and hooking the weatherproof strip, with respect to the first position on the opposite side of the above-mentioned upper end of the above-mentioned welding portion separated by the above-mentioned vertical wall, a second position on the opposite side of the above-mentioned upper boundary separated by the above-mentioned vertical wall is located between the upper surface of the above-mentioned hooking portion, or is located below the above-mentioned upper surface.

[0012] In the door frame, for example, the welded portion has a weld bead.

[0013] In the door frame, for example, the welded portion is separated from at least one of the upper edge and the lower edge of the upper frame, so that it is easy to avoid a problem caused by the welded portion being close to the upper edge or the lower edge of the upper frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic and illustrative side view of the door frame according to the embodiment, as viewed from the outer side in the vehicle width direction.

[0015] Figure 2 This is a schematic and illustrative perspective view of an upper corner portion of a door frame according to an embodiment, as viewed from the outside in the vehicle width direction.

[0016] Figure 3 yes Figure 2 III-III sectional view.

[0017] Figure 4 yes Figure 2 IV-IV cross-sectional view.

[0018] Figure 5 yes Figure 2 VV cross-sectional view.

[0019] Figure 6 It is a perspective view of the end cover attached to the door frame according to the embodiment.

[0020] Figure 7 yes Figure 2 VII-VII sectional view.

[0021] Figure 8 yes Figure 2 VIII-VIII sectional view of the invention.

[0022] Fig. 9 This is a schematic and illustrative perspective view of a portion IX of the door frame according to the embodiment as viewed from the outside in the vehicle width direction.

[0023] Fig.10 yes Fig. 9 XX cross-sectional view.

[0024] Fig.11 yes Fig. 9 XI-XI sectional view.

[0025] Fig.12 yes Fig. 9 XII-XII sectional view. DETAILED DESCRIPTION

[0026] The following discloses an exemplary embodiment of the present invention. The structure of the embodiment shown below and the action and result (effect) brought about by the structure are an example. The present invention can also be implemented by a structure other than the structure disclosed in the following embodiment. In addition, according to the present invention, at least one of the various effects (including derived effects) obtained by the structure can be obtained. In addition, in this specification, ordinal numbers are given for the convenience of distinguishing parts, parts, positions, directions, etc., and do not indicate priority or order.

[0027] In each figure, directions are shown for convenience. X indicates the front in the vehicle front-rear direction, Y indicates the right in the vehicle width direction, and Z indicates the top in the vehicle up-down direction. The vehicle front-rear direction, vehicle width direction, and vehicle up-down direction intersect (are orthogonal) with each other.

[0028] Figure 1 FIG. 1 is a side view of the front door frame 1 as viewed from the outside in the vehicle width direction. Figure 1 As shown, the front door frame 1 includes an upper frame 11 constituting a front edge 1a and an upper edge 1b, a lower side member 12 constituting a lower portion of the front side of the front door frame 1, a pillar 13 constituting a rear edge 1d, and a waist reinforcement 14 constituting a lower edge 1c. The front door frame 1 is an example of a vehicle door frame.

[0029] The upper frame 11, the lower member 12, the column 13 and the waist reinforcement 14 are made of metal materials such as aluminum alloy and iron-based materials. The upper frame 11 can be formed by extrusion molding of aluminum alloy, for example. In addition, the lower member 12, the column 13 and the waist reinforcement 14 can be formed by bending and joining one or more plates of metal materials, for example, but can also be cast parts.

[0030] The front end (lower end) of the upper frame 11 is joined by welding to the upper end (rear end) of the lower member 12. In addition, the upper frame 11 and the column 13 are joined by welding at the upper corner portion 1e.

[0031] In addition, fixing parts 12a and 13a are provided at the lower part of the lower side member 12 and the lower part of the column 13. The fixing parts 12a and 13a are joined to the door panel (not shown) by welding or the like. The fixing parts 12a and 13a can also be called brackets. In addition, the fixing parts 12a and 13a improve the rigidity and strength of the door panel. Therefore, the fixing parts 12a and 13a can also be called reinforcements.

[0032] Figure 2 is a perspective view of the front door frame 1 as viewed from the outside in the vehicle width direction. Figure 3 yes Figure 2 III-III sectional view.

[0033] like Figure 2 As shown in FIG. 1 , the upper frame 11 extends substantially along the front-rear direction of the vehicle at the upper corner portion 1e. The upper frame 11 is formed by extrusion molding of an aluminum alloy, for example. Therefore, regardless of the position of the upper frame 11 in the longitudinal direction, the cross-sectional shape of the upper frame 11 intersecting the longitudinal direction is the same as that of the upper frame 11. Figure 3 The cross-sectional shapes are roughly the same.

[0034] like Figure 3 As shown, the upper frame 11 includes a closed cross-section portion 11a, a horizontal wall 11b, and a vertical wall 11c. The closed cross-section portion 11a includes an upper wall 11a1, a lower wall 11a2, an inner wall 11a3, and an outer wall 11a4. The horizontal wall 11b is adjacent to the outer side of the closed cross-section portion 11a in the vehicle width direction, and the vertical wall 11c is adjacent to the outer side of the horizontal wall 11b in the vehicle width direction. In addition, the upper wall 11a1 of the closed cross-section portion 11a is connected to the horizontal wall 11b and extends. The upper wall 11a1 and the horizontal wall 11b are slightly inclined relative to the vehicle width direction in a manner that they tend to move upward as they approach the outer side in the vehicle width direction. The middle portion of the vertical wall 11c in the up-down direction is connected to the end portion of the horizontal wall 11b in the vehicle width direction. That is, the horizontal wall 11b and the vertical wall 11c form a substantially T-shaped cross-sectional shape.

[0035] A weather strip 31 is attached to the upper side of the horizontal wall 11b, and a glass run channel 32 is attached to the lower side of the horizontal wall 11b. The weather strip 31 and the glass run channel 32 are each made of, for example, an elastic body. The weather strip 31 is hooked by a protrusion 11d1 protruding upward from the upper wall 11a1 and a protrusion 11d2 protruding inward in the vehicle width direction from the upper side of the horizontal wall 11b of the vertical wall 11c. In addition, the glass run channel 32 is hooked by a protrusion 11d3 protruding inward in the vehicle width direction from the lower side of the horizontal wall 11b of the vertical wall 11c. The protrusions 11d1, 11d2, and 11d3 extend along the long side direction of the upper frame 11. The protrusion 11d2 is an example of a hooking portion for hooking the weather strip 31.

[0036] like Figure 2 As shown, the upper frame 11 has an outer surface 11c1 of the vertical wall 11c and a rear end surface 11c2. In addition, the column 13 has an outer surface 13b and a front upper end surface 13c. The outer surface 13b is an example of a first outer surface, and the outer surface 11c1 is an example of a second outer surface.

[0037] When viewed in the vehicle width direction, the end face 11c2 of the upper frame 11 and the end face 13c of the column 13 extend in an inclined manner so as to tend upward as they approach the rear. The end face 11c2 is a plane facing the direction between the rear and the bottom of the vehicle, and the end face 13c is a plane facing the direction between the front and the top of the vehicle, and the end face 11c2 and the end face 13c are butted against each other. The end face 13c is an example of a first abutting face, and the end face 11c2 is an example of a second abutting face.

[0038] The outer surface 11c1 of the upper frame 11 and the outer surface 13b of the pillar 13 are both oriented outward in the vehicle width direction and are substantially flush with each other. That is, the outer surface 11c1 and the outer surface 13b are adjacent to each other with substantially no height difference.

[0039] The upper frame 11 and the column 13 are joined by welding such as arc welding. The weld bead 16 formed by welding extends upward along the boundary B between the outer surface 11c1 and the outer surface 13b, i.e., the portion where the end surface 11c2 and the end surface 13c abut against each other, with a predetermined width. The weld bead 16 protrudes outward in the vehicle width direction from the outer surfaces 11c1 and 13b. The weld bead 16 is an example of a welded portion.

[0040] Figure 4 yes Figure 2 IV-IV cross-sectional view, Figure 5 yes Figure 2 VV section view. Figure 2 As is known, Figure 4 is a cross-sectional view passing through the vicinity of the lower end 16a of the weld bead 16, Figure 5It is a cross-sectional view passing through the vicinity of the upper end 16 b of the weld bead 16 .

[0041] like Figure 4 As shown in FIG. 1 , the lower edge 11c3 of the vertical wall 11c of the upper frame 11 is rounded and has a curved surface 11c31 convex downward. Figure 4 , Figure 5 As shown in the figure, the upper edge 11c4 of the vertical wall 11c is also rounded and has a curved surface 11c41 that protrudes upward. The outer surface 11c1 of the vertical wall 11c is a plane, or a curved surface that is nearly a plane and protrudes outward in the vehicle width direction, and the curvature of the cross section perpendicular to the long side direction of the upper frame 11 is much larger than that of the curved surfaces 11c31 and 11c41. The curvature radius of the curved surfaces 11c31 and 11c41 is smaller than the curvature radius of the outer surface 11c1. In addition, in the present embodiment, the curved surface 11c31 of the lower edge 11c3 and the curved surface 11c41 of the upper edge 11c4 extend from the outer side to the inner side in the vehicle width direction, but this is not limited to this, and the curved surfaces 11c31 and 11c41 can be adjacent to the outer surface 11c1. The outer surface 11c1 is an example of a second outer surface, the curved surface 11c31 is an example of a lower end surface, and the curved surface 11c41 is an example of an upper end surface.

[0042] like Figure 2 to Figure 5 As shown, the outer side of the vertical wall 11c and the upper corner portion 1e in the vehicle width direction is covered by a frame molding 17. The frame molding 17 has a plate-like shape and extends along the outer surface 11c1 of the vertical wall 11c, extending from the lower side of the lower edge 11c3 of the vertical wall 11c to the upper side of the upper edge 11c4 of the vertical wall 11c.

[0043] In addition, a gap g is provided by interposing a member (interposed member) between the outer surface 11 c 1 of the standing wall 11 c and the inner surface 17 a of the frame molding 17 .

[0044] like Figure 2 , Figure 3 As shown, a sponge 18 is sandwiched between the outer surface 11c1 and the inner surface 17a in front of the weld bead 16. The sponge 18 is attached to the outer surface 11c1 by bonding, for example. The sponge 18 has a substantially constant height (thickness) on the outer surface 11c1 in a free state. In addition, the sponge 18 has a substantially constant width along the width direction orthogonal to the long side direction of the outer surface 11c1, and extends along the long side direction of the outer surface 11c1. The sponge 18 is an example of an interposed object. The sponge 18 may also be called a foaming member, an elastic member, or a flexible member.

[0045] In addition, if Figure 2 , Figure 4 , Figure 5As shown, in the upper corner portion 1e, a portion of the end cap 19 is sandwiched between the outer surface 11c1 of the vertical wall 11c and the inner surface 17a of the frame molding 17 and between the outer surface 13b of the column 13 and the inner surface 17a of the frame molding 17.

[0046] Figure 6 is a three-dimensional diagram of the end cover 19, Figure 7 yes Figure 2 VII-VII cross-sectional view. When viewed from the front, the end cover 19 has a generally U-shaped shape, is located on the inner side of the frame molding 17 in the vehicle width direction, extends along the frame molding 17, and is installed in a manner to cover the column 13 from above. The end cover 19 has a cover portion 19a, an inner wall 19b, an outer wall 19c, and a connecting portion 19d. The cover portion 19a has a plate-like shape and expands in a direction intersecting the long side direction of the column 13 and the long side direction of the frame molding 17. Figure 2 As shown in FIG. 1 , the cover portion 19a covers the rear end 17c of the frame molding 17. Figure 7 As shown in FIG. 1 , the inner wall 19b extends downward from the connection portion 19d along the inner surface 13e of the column 13, and extends forward from the cover portion 19a along the inner surface 13e of the column 13. The outer wall 19c extends downward from the inner end of the connection portion 19d in the vehicle width direction along the outer surface 13b of the column 13, and extends forward from the cover portion 19a along the inner surface 13e of the column 13. Figure 2 As shown in FIG. 1 , the outer wall 19c extends forward from the cover portion 19a along the lower edge 17b of the frame molding 17 between the outer surface 13b and the inner surface 17a to the boundary B. The front portion 19c1 of the outer wall 19c covers the end surface 11c2 of the vertical wall 11c of the upper frame 11 and the lower end 16a of the weld bead 16. Figure 2 , Figure 4 As is clear, the front portion 19c1 of the outer wall 19c is present below the middle position in the vertical direction of the gap g between the upright wall 11c and the frame molding 17, and is not present above the middle position. Figure 2 , Figure 4 , Figure 5 As shown in the figure, the lower end 19c2 of the outer wall 19c exceeds the lower edge 17b of the frame molding 17 and protrudes downward, and is exposed to the outside in the vehicle width direction. That is, the outer wall 19c is sandwiched between the outer surface 13b of the pillar 13 and the inner surface 17a and the lower edge 17b of the lower part of the frame molding 17. Figure 2 As shown in the figure, the connecting portion 19d passes through the notch 13d provided at the rear upper end of the column 13 in the vehicle width direction, and connects the inner wall 19b and the outer wall 19c. The connecting portion 19d is located above the lower surface 13d1 of the notch 13d. The outer wall 19c is an example of a sandwiching portion. In addition, the rear end 17c is an example of an end.

[0047] Figure 8 yes Figure 2 VIII-VIII sectional view of FIG. Figure 5 , Figure 8 As shown in FIG. 1 and FIG. 2 , a recess 19c4 is provided on the inner surface 19c3 of the outer wall 19c of the end cover 19, and the weld bead 16 is accommodated in the recess 19c4. The recess 19c4 suppresses interference between the weld bead 16 and the outer wall 19c.

[0048] Here, in this embodiment, if Figure 4 As shown, the lower end 16a of the weld bead 16 is separated upward from the lower edge 11c3 of the vertical wall 11c, and as shown in FIG. Figure 5 As shown, the upper end 16b of the weld bead 16 is separated downward from the upper edge 11c4 of the vertical wall 11c.

[0049] If the lower end 16a of the weld bead 16 reaches the lower edge 11c3 of the vertical wall 11c or the upper end 16b of the weld bead 16 reaches the upper edge 11c4 of the vertical wall 11c, the peripheral components of the vertical wall 11c of the upper frame 11, such as the frame molding 17 and the end cover 19, are located near the lower edge 11c3 or the upper edge 11c4, and therefore, the weld bead 16 may interfere with the peripheral components, causing the peripheral components to float or bulge, or the peripheral components may not be properly mounted. Therefore, it may be necessary to significantly reduce the trouble in manufacturing the weld bead 16, etc. In this regard, in the present embodiment, as described above, the lower end 16a of the weld bead 16 is separated upward relative to the lower edge 11c3 of the vertical wall 11c, and the upper end 16b of the weld bead 16 is separated downward relative to the upper edge 11c4 of the vertical wall 11c. Therefore, according to the present embodiment, for example, it is possible to suppress the weld bead 16 from affecting the peripheral components. In addition, for example, it is not necessary to reduce the weld bead 16 with higher precision in order to suppress interference with the surrounding components. In addition, in the present embodiment, the weld bead 16 has the lower end 16a separated upward from the lower edge 11c3 of the vertical wall 11c, and has the upper end 16b separated downward from the upper edge 11c4 of the vertical wall 11c, but the weld bead 16 only needs to have at least one of the lower end 16a and the upper end 16b. In the case where the weld bead 16 has the lower end 16a separated upward from the lower edge 11c3, the effect of suppressing the interference between the lower end 16a and the surrounding components or not having to reduce the lower end 16a more significantly is obtained. In addition, in the case where the weld bead 16 has the upper end 16b separated downward from the upper edge 11c4, the effect of suppressing the interference between the upper end 16b and the surrounding components or not having to reduce the upper end 16b more significantly is obtained. In addition, if the lower edge 11c3 and the upper edge 11c4 of the vertical wall 11c have a curved shape or an angled shape, if the weld bead 16 is close to the lower edge 11c3 and the upper edge 11c4, for example, the weld bead 16 may need to be processed to match the curved shape or the angled shape, which may make the finishing of the weld bead 16 more troublesome and increase the cost. In this regard, according to the present embodiment, the weld bead 16 is separated from the lower edge 11c3 or the upper edge 11c4, and accordingly, the trouble of finishing and the increase in cost are less likely to occur.

[0050] In addition, in this embodiment, if Figure 4 As shown in FIG. 1 , the lower end 16a of the weld bead 16 is separated upward from the lower boundary b1 between the curved surface 11c31 and the outer surface 11c1, and as shown in FIG. Figure 4As shown in the figure, the upper end 16b of the weld bead 16 is separated downward from the upper boundary b2 between the curved surface 11c41 and the outer surface 11c1. According to such a structure, the lower end 16a can be separated from the lower edge 11c3 of the vertical wall 11c to a greater extent, and the upper end 16b can be separated from the upper edge 11c4 of the vertical wall 11c to a greater extent. Therefore, for example, the influence of the weld bead 16 on the surrounding components can be further suppressed, and it is more unnecessary to significantly reduce the weld bead 16 in order to suppress the interference with the surrounding components. In addition, in the present embodiment, the weld bead 16 has both the lower end 16a separated upward from the lower boundary b1 and the upper end 16b separated downward from the upper boundary b2, but the weld bead 16 only needs to have at least one of the lower end 16a and the upper end 16b. In the case where the weld bead 16 has the lower end 16a separated upward from the lower boundary b1, the interference of the lower end 16a with the surrounding components can be suppressed, or the lower end 16a does not need to be significantly reduced. Furthermore, when the weld bead 16 has an upper end 16b separated downward from the upper boundary b2, the upper end 16b can be prevented from interfering with surrounding members, or the upper end 16b does not need to be further cut.

[0051] In addition, in the present embodiment, as described above, a sponge 18 (interposition object) is sandwiched between the outer surface 11c1 (second outer surface) of the upper frame 11 and the inner surface 17a of the frame molding 17, and in front of the weld bead 16. According to such a structure, the gap between the outer surface 11c1 and the inner surface 17a is ensured by the sponge 18, so that, for example, the weld bead 16 can be suppressed from affecting the frame molding 17 as a peripheral component. In addition, for example, it is not necessary to significantly reduce the weld bead 16 in order to suppress interference with the frame molding 17. In addition, the interposition object is not limited to the sponge 18, and can be realized by various materials, shapes, etc. In addition, the installation method of the interposition object is not limited to bonding to the upper frame 11.

[0052] In addition, in the present embodiment, as described above, the end cap 19 includes the cover portion 19a covering the rear end 17c (end portion) of the frame molding 17 and the outer wall 19c (interposed portion) interposed between the outer surface 13b (first outer surface) and the inner surface 17a. That is, by providing the outer wall 19c as the interposed portion in the end cap 19, a gap between the outer surface 13b and the inner surface 17a can be ensured, so that, for example, compared with the case of adding another component, the weld bead 16 can be suppressed from affecting the frame molding 17 as a peripheral component with a simpler structure or at a lower cost. In addition, there is no need to significantly reduce the weld bead 16 in order to suppress interference with the frame molding 17, for example.

[0053] In the present embodiment, as described above, the weld bead 16 extends in an oblique direction intersecting the vertical direction and the horizontal direction. That is, the characteristic structure of the present embodiment described above can be applied to the weld bead 16 extending in an oblique direction intersecting the vertical direction and the horizontal direction.

[0054] In addition, in this embodiment, the upper frame 11 has a protrusion 11d2 (hook portion) for hooking the weather strip 31. Figure 5 As shown in the figure, the first position P1 of the upper end 16b of the weld bead 16 on the opposite side of the vertical wall 11c is located between the second position P2 of the upper boundary b2 on the opposite side of the vertical wall 11c and the upper surface 11d21 of the protrusion 11d2. The area 11e1 on the upper side of the upper surface 11d21 of the protrusion 11d2 in the inner surface 11e of the upper frame 11 becomes the weather strip 31 ( Figure 3 ) sealing surface. Here, assuming that the first position P1 is located at the same position as the second position P2 or at a position higher than the second position P2, the welding liquid appears in the area 11e1 during welding, and it is not easy to ensure the sealing of the weather strip 31. In this regard, in the present embodiment, the first position P1 is located between the second position P2 and the upper surface 11d21 of the protrusion 11d2, that is, it is located below the second position P2. Therefore, for example, the welding liquid is not easy to appear in the area 11e1 during welding, and the influence on the sealing performance of the weather strip 31 can be suppressed. In addition, in the present embodiment, the first position P1 is located between the second position P2 and the upper surface 11d21, but it is not limited to this. The first position P1 can also be located below the upper surface 11d21. In this case, it is also possible to suppress the welding liquid from appearing in the area 11e1.

[0055] In addition, in the present embodiment, the welded portion has a weld bead 16 protruding outward from the outer surfaces 11c1 and 13b in the vehicle width direction. According to such a structure, for example, compared with a case where there is no weld bead 16 at the welded portion, it is easier to improve the rigidity and strength of the welded portion in accordance with the degree to which the weld bead 16 protrudes from the outer surfaces 11c1 and 13b.

[0056] Next, Figure 1 The structure of Section IX will be described. Fig. 9 yes Figure 1 A stereogram of Section IX, Fig.10 yes Fig. 9 XX cross-sectional view, Fig.11 yes Fig. 9 XI-XI sectional view, Fig.12 yes Fig. 9 XII-XII sectional view.

[0057] like Figure 10 to Figure 12As shown in the figure, the support member 21 has a vertical wall 22 and a protrusion 23. The vertical wall 22 extends with a cross section that is elongated in the vertical direction, and has an outer surface 22a and an inner surface 22b. The protrusion 23 protrudes inwardly in the vehicle width direction from the inner surface 22b of the vertical wall 22 at the middle position in the long side direction of the vertical wall 22. The protrusion 23 has a base 23a that protrudes inwardly in the vehicle width direction and a hook 23b that extends forward, backward and downward from the front end of the base 23a, and the base 23a and the hook 23b form a T-shaped structure.

[0058] The angle piece 24 has a plate-like shape and includes a base 24a extending in an inclined direction slightly inclined upward as it approaches the outer side in the vehicle width direction, and a hook-shaped edge 24b bent upward at the end of the base 24a on the outer side in the vehicle width direction. The end face 24b1 of the edge 24b extends along the upper edge 22c of the vertical wall 22 of the support member 21 at a position lower than the upper edge 22c, and a notch 24b2 opened toward the bottom is provided on the end face 24b1, and the base 23a of the protrusion 23 is accommodated in the notch 24b2. Fig.10 , Fig.12 As shown in FIG. 24 , the first adjacent portion 24c1 adjacent to the notch 24b2 in the edge 24b in the long side direction of the support member 21 is sandwiched between the vertical wall 22 and the hook portion 23b. Fig.11 As shown in FIG. 24 , the second adjacent portion 24c2 adjacent to the notch 24b2 in the edge 24b below is sandwiched between the vertical wall 22 and the hook portion 23b below the base 23a. Fig.12 As shown in FIG. 2 , two first adjacent portions 24c1 adjacent to each other in the longitudinal direction via the notch 24b2 in the edge 24b sandwich the base 23a in the longitudinal direction. Fig.11 As shown, a weather strip 31 is interposed between the upper wall 17d of the frame molding 17 and the base 23a.

[0059] The protrusion 23 can function as a positioning portion of the corner piece 24 in the vertical direction, the vehicle width direction, and the long side direction of the support member 21. In addition, the protrusion 23 can function as a hook portion of the weather strip 31 together with the frame molding 17. According to such a structure, compared with a structure having a protrusion for positioning the corner piece 24 in each direction, the support member 21 and thus the front structure of the front door frame 1 can be realized by a relatively simple structure.

[0060] The above examples illustrate the embodiments of the present invention, but the above embodiments are only examples and are not intended to limit the scope of the invention. The present invention can be implemented in various other forms, and various omissions, substitutions, combinations, and changes can be made without departing from the main purpose of the invention. The above various forms and deformed forms are included in the scope and main purpose of the invention, and are included in the invention described in the claims and their equivalents. In addition, the specifications (structure, type, direction, form, size, length, width, thickness, height, quantity, configuration, position, material, etc.) of each structure, shape, etc. can be appropriately changed and implemented.

[0061] For example, the weld bead (protrusion) may be lowered or disappear at the welded portion by finishing, etc. In addition, for example, the structure of the upper corner of the above embodiment can also be applied to the upper and front corner of the rear door.

Claims

1. A door frame, characterized in that: have: a pillar having a first abutment surface located at a corner portion of an upper side of the door and a first outer surface facing outward in a vehicle width direction; An upper frame having: a second abutting surface located at the corner portion and abutting against the first abutting surface; a second outer surface, which faces outward in the vehicle width direction, is adjacent to the first outer surface, and is a plane or a curved surface convex outward in the vehicle width direction; an upper end surface, which is an upwardly convex curved surface having a smaller curvature radius than the second outer surface and constituting an upper edge; and an upper side boundary, which is a boundary between the second outer surface and the upper end surface; a frame molding extending along the upper frame, covering the outer side of the upper frame in the vehicle width direction, and having an inner surface facing the first outer surface and the second outer surface with a gap therebetween; as well as a welding portion located at a boundary portion between the first outer surface and the second outer surface, extending along the first abutting surface and the second abutting surface, facing the inner surface, and joining the column to the upper frame, The second outer surface and the first outer surface are adjacent to each other with substantially no height difference. The welding portion has at least one of an upper end that is spaced downward from the upper edge of the upper frame and a lower end that is spaced upward from the lower edge of the upper frame. The upper frame has: a vertical wall extending in the vertical direction and in the long side direction of the upper frame; and a hook portion protruding inward in the vehicle width direction from a position away from the upper edge of the vertical wall downward and hooking the weather strip, The area between the upper surface of the hook portion and the upper side boundary in the inner surface of the upper frame constitutes a sealing surface for forming a seal with the weatherproof strip. With respect to a first position of the upper end of the welding portion on the opposite side across the vertical wall, a second position of the upper boundary on the opposite side across the vertical wall and located between the upper surface of the hook portion, or located below the upper surface, The welding liquid at the welding portion is located below the sealing surface during welding.

2. The door frame according to claim 1, characterized in that: The upper frame further comprises: a lower end surface, which is a downwardly convex curved surface having a smaller curvature radius than the second outer surface and constituting the lower edge; and a lower side boundary, which is a boundary between the second outer surface and the lower end surface. The welded portion has at least one of the upper end located at or below the upper boundary and the lower end located at or above the lower boundary.

3. The door frame according to claim 1, characterized in that: An intervening object is provided, and the intervening object is interposed between the second outer surface and the inner surface at a position away from the second abutting surface.

4. The door frame according to claim 1, characterized in that: The welding portion has a welding bead protruding outward in the vehicle width direction, In the vehicle width direction, the gap between the frame molding and the upper frame is narrowed toward the upper side. The door frame has an end cover, The end cap has: a cover portion covering an end portion of the frame molding; an interposing portion formed in a plate shape, extending forward from the cover portion along the lower edge of the frame molding between the first outer surface and the inner surface of the frame molding, interposed between at least one of the first outer surface and the second outer surface and the inner surface, and covering the lower side of the welding portion; as well as A notch portion is formed by notching a part of the upper side of the clamping portion so that the upper side of the welding portion is exposed from the clamping portion in a manner facing the inner surface of the frame molding.

5. The door frame according to claim 4, characterized in that: The sandwich portion includes a recessed portion formed on an inner surface of the sandwich portion and accommodating a lower portion of the welded portion in a state separated from the lower portion of the welded portion in the vehicle width direction.

6. The door frame according to claim 1, characterized in that: The welding portion extends in an inclined direction intersecting the up-down direction and the horizontal direction.

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