JP4127301B2 - Vehicle door frame - Google Patents

Description

  The present invention relates to a vehicle door frame to which a corner portion is welded.

  In a vehicle door frame, there is known a structure in which a frame component on the roof side and a frame component on the center pillar side are abutted and welded to form a corner (see, for example, Patent Document 1). In some cases, a garnish is attached to the outer surface of such a door frame. In this case, the garnish is usually attached to the outer surface of the frame after smoothing the weld bead at the corner.

Here, in this conventional structure, if the weld bead is not smoothed after welding of the corner portion in the door frame, the garnish and the weld bead interfere with each other, and the garnish cannot be assembled.
JP 2000-31968 A

  In view of the above facts, an object of the present invention is to provide a vehicle door frame capable of assembling a garnish without smoothing a weld bead after welding of a corner portion of the door frame.

  In the vehicle door frame of the present invention described in claim 1, the upper side portion is disposed on the roof side, the roof side frame constituting portion having the first mating portion at the end portion, the center pillar side portion, and the upper portion. A pillar-side frame constituting section that includes a second mating section that is joined to the first mating section by welding, and the second mating section forms a step in the vehicle width direction between the first mating section and the first mating section. It is characterized by that.

  According to the vehicle door frame of the present invention described in claim 1, a step is formed in the vehicle width direction between the second mating portion of the pillar side frame constituting portion and the first mating portion of the roof side frame constituting portion. Therefore, when the second mating portion is joined to the first mating portion by welding, a weld bead is formed so as to fill the step between the second mating portion and the first mating portion. That is, the swell of the weld bead is absorbed by the step between the second mating portion and the first mating portion. Thereby, even if the 2nd mating part and the 1st mating part are welded, the space (gap) which does not make the back of the garnish assembled to the door frame for vehicles and the welding bead interfere. As a result, it is possible to avoid interference between the back surface of the garnish and the weld bead without smoothing the weld bead as a finishing step before the assembly of the garnish.

  A vehicle door frame according to a second aspect of the present invention is the vehicle door frame according to the first aspect, wherein the second mating portion is arranged one step lower inward in the vehicle width direction than the first mating portion. And

  According to the vehicle door frame of the present invention described in claim 2, since the second mating portion is arranged one step down inward in the vehicle width direction from the first mating portion, the second mating portion is the first mating portion. When welded, the weld bead is formed so as to fill the step between the second mating portion and the first mating portion, and the projection amount of the weld bead based on the first mating portion can be suppressed.

  A vehicle door frame according to a third aspect of the present invention is characterized in that, in the configuration according to the first or second aspect, the pillar side frame constituting portion is constituted by one member in the vehicle width direction. And

  According to the vehicle door frame of the present invention described in claim 3, the pillar-side frame constituting portion is constituted by one member in the vehicle width direction, and thus is constituted by two members in the vehicle width direction as in the prior art. Compared with the case where it has, it is easy to form the level | step difference of a vehicle width direction between a 2nd mating part and a 1st mating part.

  As described above, according to the vehicle door frame according to claim 1 of the present invention, it is possible to assemble the garnish without smoothing the weld bead after the welding of the corner portion of the door frame. Has an effect.

  According to the vehicle door frame of claim 2, the amount of protrusion of the weld bead relative to the first mating portion is suppressed, so that the garnish can be obtained without smoothing the weld bead after welding of the corner portion of the door frame. It has an excellent effect that can be assembled.

  According to the vehicle door frame of the third aspect, the garnish can be assembled with a simple structure without smoothing the weld bead after the welding of the corner portion of the door frame.

(Configuration of the embodiment)
An embodiment of a vehicle door frame according to the present invention will be described with reference to the drawings. In the figure, arrow UP indicates the upward direction of the vehicle, arrow FR indicates the forward direction of the vehicle, and arrow IN indicates the inner side in the vehicle width direction.

  FIG. 1 shows a vehicle 10 to which a vehicle door frame (hereinafter simply referred to as “door frame”) 14 according to the present invention is applied. A door frame 14 is integrally coupled to the front side door 12 of the vehicle 10 at the upper portion of the door main body 12A. The door frame 14 constitutes a window frame that supports the door glass 16, and has a roof side frame component 20 having an upper side disposed on the roof 19 side and a pillar side frame component disposed on the center pillar 38 side. 40, and a resin garnish 18 is attached to the outside of the door frame 14 in the vehicle width direction, that is, on the outer plate surface side (design surface portion side). The roof side frame constituting part 20 and the pillar side frame constituting part 40 shown in FIG. 2 are formed by roll forming a panel such as a steel plate.

  As shown in FIGS. 2 and 5, a channel-shaped guide groove 22 extending substantially in the vehicle front-rear direction is formed in the lower portion of the roof-side frame constituting portion 20. As shown in FIG. 5, a glass run 32 is held on the inner peripheral portion of the guide groove 22, and the door glass 16 is held by the glass run 32. A mounting groove 24 extending substantially in the vehicle front-rear direction is formed in the upper part of the roof side frame constituting portion 20, and a door weather strip 34 for sealing is attached to the mounting groove 24. The upper part of the door weather strip 34 is in contact with the cyclen 30 constituting the side part of the vehicle body.

  The groove bottom portion 22A of the guide groove 22 and the groove bottom portion 24A of the mounting groove 24 are joined by spot welding. The side wall portion 22B on the outer side in the vehicle width direction of the guide groove 22 and the side wall portion 24B on the outer side in the vehicle width direction of the mounting groove 24 are continuous with the roof side outer plate portion 26 that forms a part of the door outer plate surface. A garnish 18 is disposed outside the roof side outer plate portion 26 in the vehicle width direction, and the garnish 18 is fixed to the roof side outer plate portion 26 by a clip (not shown). On the inner side in the vehicle width direction of the guide groove 22 (on the right side in FIG. 5), a rigid reinforcing portion 28 having a closed cross-sectional structure extending substantially in the vehicle front-rear direction is formed. The rigidity reinforcing portion 28 comes into contact with a sealing opening weather strip 36 attached to the inside of the cylinder 30 in the vehicle width direction.

  As shown in FIG. 2, the vehicle rear side end portion 26 </ b> A of the roof side outer plate portion 26 in the roof side frame constituting portion 20 has an end surface inclined obliquely downward in the front of the vehicle, and the pillar side frame constituting portion. A roof side mating portion 27 as a first mating portion joined by welding to an upper portion in the vehicle vertical direction of 40. (See FIG. 3).

  As shown in FIGS. 2 and 4, the pillar-side frame constituting portion 40 is formed with a channel-shaped guide groove 42 extending substantially in the vehicle vertical direction at a portion on the vehicle front side. As shown in FIG. 4, a glass run 52 is held on the inner peripheral portion of the guide groove 42, and the door glass 16 is held by the glass run 52. A mounting groove 44 extending substantially in the vehicle vertical direction is formed on the vehicle rear side of the guide groove 42, and an opening weather strip 54 for sealing is attached to the mounting groove 44. The opening weather strip 54 comes into contact with the cyclen 30.

  The groove bottom portion 42A of the guide groove 42 and the groove bottom portion 44A of the mounting groove 44 are joined by spot welding. On the inner side in the vehicle width direction of the guide groove 42 (the lower side in FIG. 4), a rigid reinforcing portion 48 having a closed cross-sectional structure extending substantially in the vehicle vertical direction is formed. The rigid reinforcing portion 48 comes into contact with a sealing opening weather strip 56 attached to the cyclen 30.

  The pillar-side frame constituting unit 40 includes a pillar-side outer plate portion 50 that forms a part of the door outer plate surface, that is, the outer surface in the vehicle width direction. The pillar-side outer plate portion 50 is continuous with the side wall portion 42B that is the outer portion in the vehicle width direction of the guide groove 42, the side wall portion 44B that is the outer portion in the vehicle width direction of the mounting groove 44, and the side wall portion 44B. It includes a pillar-side outer plate main portion 46 extending to the vehicle rear side and the vehicle upper side (see FIG. 2). As shown in FIG. 2, the end portion of the side wall portion 42B on the vehicle front side is a folded portion 42C that is folded outward in the vehicle width direction. Further, the pillar-side outer plate main portion 46 includes a recessed portion 46B that is recessed inward in the vehicle width direction with respect to the general surface 46A and extends in a substantially vertical direction of the vehicle. And the edge part of the vehicle upper side becomes the folding | returning part 46C turned back inside the vehicle width direction. As shown in FIG. 4, a garnish 18 is disposed on the outer side in the vehicle width direction of the pillar side outer plate portion 50, and this garnish 18 is fixed to the pillar side outer plate portion 50 by a clip (not shown). ing.

  The pillar-side outer plate portion 50 shown in FIG. 2 has an upper end surface on the vehicle front side in the vertical direction of the vehicle that is inclined obliquely downward in the front of the vehicle. The outer side portion in the width direction is a pillar side matching portion 51 as a second matching portion joined to the roof side matching portion 27 of the roof side frame constituting portion 20 by welding (for example, TIG welding or MIG welding). As shown in FIG. 3, the pillar side matching portion 51, which is regarded as a connecting portion, is arranged one step below the roof side matching portion 27 inward in the vehicle width direction (vehicle interior side). A step 60 is formed in the vehicle width direction therebetween, and the rise of the weld bead 62 formed after welding is absorbed by the step 60.

  Here, the pillar side frame constituting portion 40 is configured as a single member in the vehicle width direction in order to easily form a step 60 in the vehicle width direction between the pillar side fitting portion 51 and the roof side fitting portion 27. Yes. In other words, in the conventional structure, a separate outer panel is disposed outside the portion corresponding to the pillar side outer plate portion 50 in the vehicle width direction, and the front end portion and the rear end portion thereof are caulked to correspond to the pillar side outer plate portion 50. In this embodiment, this outer panel is abolished. In addition, with the abolition of the outer panel, the plate thickness of the pillar-side frame component 40 is set to be slightly thicker than that of the conventional product, thereby suppressing a reduction in rigidity.

  The pillar side fitting part 51 of the pillar side frame constituting part 40 and the roof side fitting part 27 of the roof side frame constituting part 20 are welded to form a corner part 14A of the door frame 14 as shown in FIG. It is like that. In other words, in the corner portion 14 </ b> A, a step 60 is formed at the joint portion between the pillar-side mating portion 51 and the roof-side mating portion 27 and welding is performed.

(Operation and effect of the embodiment)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 3, the pillar-side matching portion 51 of the pillar-side frame constituting portion 40 is disposed one step down inward in the vehicle width direction with respect to the roof-side matching portion 27, and the roof-side matching portion of the roof-side frame constituting portion 20 is arranged. 27, the step 60 is formed in the vehicle width direction. Therefore, when the pillar-side mating portion 51 is joined to the roof-side mating portion 27 by welding, the step 60 between the pillar-side mating portion 51 and the roof-side mating portion 27 is formed. A weld bead 62 is formed so as to fill the gap. That is, the rise of the weld bead 62 is absorbed by the step 60 between the pillar-side mating portion 51 and the roof-side mating portion 27 in the corner portion 14 </ b> A, and the protruding amount of the weld bead 62 with respect to the roof-side mating portion 27 is suppressed. it can. Thereby, even if the pillar side matching part 51 and the roof side matching part 27 are welded, a space (gap) that does not interfere the back surface 18A of the garnish 18 assembled to the door frame 14 and the weld bead 62 is secured. .

  In this way, by using the step 60 between the pillar-side mating portion 51 and the roof-side mating portion 27, the welding bead 62 is not smoothed (flat finishing process) with a sander or the like before the garnish 18 is assembled. However, interference between the back surface 18A of the garnish 18 and the weld bead 62 can be avoided. Therefore, the garnish 18 can be assembled even if the weld bead 62 is not smoothed (not cut) after the welding of the corner portion 14 </ b> A in the door frame 14.

  Here, the smoothing process (flat finishing process) of the weld bead 62 by the sander or the like is eliminated in the corner portion 14A, so that the operator can save one step in the manufacturing process, so the quality is easily stabilized. Good production efficiency.

  Moreover, in this embodiment, since the pillar side frame structure part 40 is comprised by one member in the vehicle width direction, compared with the case where it is comprised by two members in the vehicle width direction like the past, it is the pillar side alignment. A step 60 in the vehicle width direction can be easily formed between the portion 51 and the roof side mating portion 27, and the number of roll forming steps can be reduced. Further, in the conventional structure, that is, a structure in which a separate outer panel is disposed on the outer side in the vehicle width direction of the portion corresponding to the pillar side outer plate portion 50, the frame itself has an outer panel, and a garnish is further placed thereon. Since it becomes a structure, it became a double outer structure and was inefficient in terms of mass and cost, but in this embodiment, the pillar side frame constituting part 40 is constituted by one member in the vehicle width direction, Efficient in terms of mass and cost. Furthermore, by adopting a slim structure in which the pillar side frame constituting part 40 is constituted by one member in the vehicle width direction, compared to the case of forming the closed space by constituting two members in the vehicle width direction, the paint is easily attached, There is also an effect that it does not rust easily.

  Thus, according to the present embodiment, the structure and the production process are simplified, and it is possible to realize ease of production that contributes to low cost, mass reduction, and productivity improvement.

(Supplementary explanation of the embodiment)
In the above-described embodiment, the pillar-side alignment portion 51 is disposed one step lower inward in the vehicle width direction than the roof-side alignment portion 27. For example, the roof-side alignment portion (first alignment portion) is the pillar-side alignment. It may be arranged one step lower inward in the vehicle width direction than the portion (second mating portion).

  Moreover, in the said embodiment, although the pillar side frame structure part 40 is comprised by one member in the vehicle width direction, for example, a pillar side frame structure part is comprised by multiple members and the pillar side in the vehicle width direction. It is good also as a structure which forms a level | step difference in a vehicle width direction between an alignment part (2nd alignment part) and a roof side alignment part (1st alignment part).

  Furthermore, in the said embodiment, although the case where the vehicle door frame which concerns on this invention was applied to the door frame 14 of the front side door 12 shown by FIG. 1 was mentioned as an example, it demonstrated concretely, Such a vehicle door frame may be applied to a door frame of a rear side door.

1 is an external perspective view showing a vehicle to which a vehicle door frame according to an embodiment of the present invention is applied (a part of the vehicle is shown). It is a perspective view which shows the corner part of the door frame for vehicles which concerns on embodiment of this invention (it shows in the state which each cut | disconnected the vehicle lower side of the pillar side frame structure part, and the vehicle front side of the roof side frame structure part). FIG. 3 is an enlarged cross-sectional view corresponding to a cross section taken along line 3-3 in FIG. 2. FIG. 4 is an enlarged cross-sectional view corresponding to a cross section taken along line 4-4 of FIG. It is an expanded sectional view equivalent to the 5-5 line section of Drawing 1.

Explanation of symbols

14 Door frame (vehicle door frame)
19 Roof 20 Roof side frame component 27 Roof side mating part (first mating part)
38 Center pillar 40 Pillar side frame component 51 Pillar side mating part (second mating part)
60 steps IN Inside width direction

Claims (3)

A roof side frame constituting portion having an upper side portion disposed on the roof side and having a first mating portion at an end;
A second alignment portion that is disposed on the center pillar side and is joined to the first alignment portion by welding on the upper portion, and the second alignment portion forms a step in the vehicle width direction between the first alignment portion and the first alignment portion. Pillar side frame components,
A vehicle door frame characterized by comprising:   2. The vehicle door frame according to claim 1, wherein the second mating portion is disposed one step lower inward in the vehicle width direction than the first mating portion.   3. The vehicle door frame according to claim 1, wherein the pillar side frame constituting portion is constituted by one member in a vehicle width direction.

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