JP6472602B2 - Vehicle door frame structure - Google Patents

Description

  The present invention relates to a vehicle door frame structure, and more particularly to a door frame structure that fixes a door frame to a door panel via a connecting member.

  In a vehicle door of a type in which a door frame (door sash) is inserted and fixed in the door panel, it is required to ensure the strength of the door frame in the vicinity of the connection portion to the door panel. As a countermeasure, there is known a door frame in which the cross-sectional shape of the insertion portion inserted into the door panel is changed to improve the cross-sectional strength. For example, in the door frame of Patent Document 1, the width of the protruding portion of a cylindrical cross section or bag-shaped cross section (a cylindrical shape with a part opened) protruding from the design portion to the vehicle inner side is exposed (protruded) to the outside of the door panel. The insertion portion into the door panel is made larger than the exposed portion. If the door frame component is a press-molded product, the degree of freedom in setting the cross-sectional shape at the time of manufacture is high. Easy. On the other hand, when the door frame constituent member is formed by extrusion molding (for example, Patent Document 2), it is difficult to set the projecting portion having a three-dimensional cross-sectional shape to have a different cross-sectional shape only in a part in the longitudinal direction. .

JP 2013-71629 A JP 2012-106691 A

  An object of this invention is to provide the vehicle door frame structure which can obtain high intensity | strength simply and reliably in a connection part with a door panel.

The present invention relates to a vehicle door frame structure in which a door frame is assembled to a door panel via a connecting member. The door frame includes a design portion positioned on the vehicle exterior side, and a cylindrical shape or a bag projecting toward the vehicle interior with respect to the design portion. The door frame and the connection member each have an insertion part inserted into the door panel and an exposed part exposed outside the door panel, and the insertion part of the connection member is the door panel. The connecting member has a surrounding portion that continuously covers the protruding portion of the door frame from the inside of the vehicle from the insertion portion to the exposed portion, and the insertion portion of the connecting member includes the surrounding portion and the surrounding portion. And a flange extending to the inner peripheral side and the outer peripheral side of the door frame, and the exposed portion of the connecting member includes only the surrounding portion .

The protrusion of the door frame has at least a vehicle inner side facing the vehicle inner side, and an inner peripheral portion and an outer peripheral portion spaced apart from the inner peripheral side and the outer peripheral side of the door frame across the vehicle inner portion, and connected. It is preferable that the surrounding portion of the member has three surfaces surrounding the vehicle inner side portion, the inner peripheral portion, and the outer peripheral portion of the protruding portion .

Furthermore, it is preferable to provide a cover member that covers the surrounding portion of the connection member from the vehicle inner side with an exposed portion exposed outside the door panel .

According to the vehicle door frame structure of the present invention described above, the protruding portion of the door frame has a constant cross-sectional shape, and is continuously formed from the exposed portion exposed outside the door panel to the insertion portion in the door panel by the surrounding portion provided in the connecting member. And the protrusion is reinforced . Moreover, the insertion part of a connection member is provided with a surrounding part and a flange, and the exposed part of a connection member is provided with only a surrounding part. Thereby , the intensity | strength of a connection part with a door panel can be improved reliably, without being restrict | limited to the cross-sectional shape of the protrusion part of a door frame.

It is the figure which looked at the door frame of the state which assembled | attached the hinge bracket and the lock reinforcement which comprises the front side surface door of a vehicle from the vehicle outer side. It is the figure which looked at the door frame of FIG. 1 from the vehicle inner side. It is the figure which expanded the part with which the side frame of the door frame was couple | bonded with the lock reinforcement, and was seen from the vehicle outer side. It is the figure which expanded the part and was seen from the vehicle inner side. It is the figure which expanded the part with which the upper frame of the door frame was couple | bonded with respect to the hinge bracket, and was seen from the vehicle outer side. It is the figure which expanded the part and was seen from the vehicle inner side. It is the figure which looked at the rock reinforcement from the vehicle inside. It is the figure which looked at the hinge bracket from the vehicle inner side. It is sectional drawing which follows the IX-IX line of FIG. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which follows the XI-XI line of FIG. It is sectional drawing which follows the XII-XII line | wire of FIG. It is sectional drawing which follows the XIII-XIII line | wire of FIG. It is sectional drawing which follows the XIV-XIV line | wire of FIG.

  The door frame 11 shown in FIG.1 and FIG.2 comprises the front side surface door (henceforth a door) of a motor vehicle. In the following description, expression of directions such as front, rear, upper, lower, vehicle inside, and vehicle outside means a direction based on the body of the automobile to which the door is attached. In the door frame 11, the side facing the window opening 12 is called the inner peripheral side, and the opposite side is called the outer peripheral side.

  The door frame 11 includes an upper frame 15 that forms an upper edge portion of the door, and a rear side frame 16 that forms a rear edge portion of the door. The upper frame 15 and the rear side frame 16 are connected by a rear corner portion 17. . The rear side frame 16 extends downward from the rear corner portion 17, and a lower end portion thereof is fixed to a lock reinforcement (connecting member) 30. The upper frame 15 has a shape that gradually moves downward as it moves away from the rear corner portion 17, and a predetermined portion on the front end side is fixed to the hinge bracket (connection member) 40.

  A part below the door frame 11 is inserted into a door panel constituting the door. The door panel includes an inner panel 50 (a part of which is shown in FIG. 11) located inside the vehicle and an outer panel (not shown) located outside the vehicle. Moreover, it has the hinge side panel 60 (a part is shown in FIG. 14) fixed to the inner panel 50. An insertion boundary line L1 indicated by a virtual line in FIGS. 3 to 6 virtually indicates the position of the upper edge portion of the door panel, and an exposed portion of the door frame 11 above the insertion boundary line L1 protrudes from the door panel. 11a, the part below the insertion boundary line L1 is the insertion part 11b inserted into the door panel. As shown in FIGS. 3 to 6, a part of the rear side frame 16 and the lock reinforcement 30 are included in the insertion part 11b at the rear part of the door frame 11, and a hinge bracket 40 is provided at the insertion part 11b at the front part of the door frame 11. included. The upper frame 15 as a whole constitutes the exposed portion 11a and is not inserted into the door panel. In the insertion portion 11b, the lock reinforcement 30 is fixed to the inner panel 50, and the hinge bracket 40 is fixed to the hinge side panel 60. A belt line reinforcement (not shown) extending in the front-rear direction of the door is fixed to the lock reinforcement 30 and the hinge bracket 40.

  Cross-sectional shapes of the upper frame 15 and the rear side frame 16 are shown in FIGS. Although the upper frame 15 and the rear side frame 16 have different dimensions and shapes, the upper frame 15 and the rear side frame 16 have a corresponding portion that can be abutted at the rear corner portion 17. The corresponding parts are indicated by common reference numerals, the constituent elements of the upper frame 15 are appended with (U), and the constituent elements of the rear side frame 16 are appended with (S). Distinguish. In the following description, the contents common to the upper frame 15 and the rear side frame 16 are denoted by reference numerals without (U) and (S), and the contents unique to the upper frame 15 and the rear side frame 16 are (U) and ( A code including S) is used.

  The upper frame 15 and the rear side frame 16 are formed by extrusion molding of a light metal such as aluminum. Each of the upper frame 15 and the rear side frame 16 has a design portion 21 located on the outer side of the vehicle, a projecting portion 22 having a cylindrical cross section projecting toward the inner side of the design portion 21, and the design portion 21 and the projecting portion 22. And a connecting portion 23 for connecting the two. A glass run holding portion 24 surrounded by the design portion 21, the projecting portion 22, and the connecting portion 23 is formed on the inner peripheral side of the door frame 11, and a weather strip holding portion 25 is formed on the outer peripheral side of the glass run holding portion 24. Yes.

  The design part 21 has an inner peripheral part 21 a located on the inner peripheral side of the door frame 11 and an outer peripheral part 21 b located on the outer peripheral side of the door frame 11, with a part connected to the connection part 23 as a boundary. As shown in FIGS. 9 to 11, in the rear side frame 16, a part of the outer peripheral portion 21 b (U) is offset to the vehicle inner side, and the reinforcing rib 21 c (U) protrudes from the offset portion toward the vehicle outer side. ing.

  The protruding portion 22 includes an inner peripheral portion 22a and an outer peripheral portion 22b that are spaced apart and opposed to the inner peripheral side and the outer peripheral side of the door frame 11, and an outer side portion 22c and an inner side portion that are spaced apart and opposed to the vehicle outer side and the vehicle inner side. 22d, and has a cylindrical cross section in which the inside surrounded by these parts is hollow. The inner peripheral portion 22a and the outer peripheral portion 22b are spaced apart from each other so as to move away from the portion connected to the vehicle outer portion 22c and to the portion connected to the vehicle inner portion 22d. Due to the inclined shape, the protrusion 22 has a substantially trapezoidal cross-sectional shape.

  The glass run holding part 24 is a concave part opened toward the inner peripheral side of the door frame 11 with the connection part 23 as a bottom part, and the inner peripheral part 21a and the inner peripheral part 22a face each other. It constitutes the side. A glass run (not shown) is inserted into the glass run holding portion 24. Step portions 21d and 22e for preventing the glass run from coming off are formed at the opposing portions of the inner peripheral portion 21a and the inner peripheral portion 22a. The glass run is made of an elastic material, and holds a door glass (not shown) supported in the window opening 12 so as to be able to move up and down from the vehicle inner side and the vehicle outer side.

  The weather strip holding part 25 is a part opened toward the outer peripheral side of the door frame 11 with the connecting part 23 as a bottom part, a claw part 21e protruding from the design part 21 to the vehicle inner side, the protruding part 22, and the connecting part 23. And a claw portion 26 protruding from the boundary portion toward the vehicle outer side. The weather strip holding unit 25 holds a weather strip (not shown). The weather strip is made of an elastic material, and has a leg portion held in a space surrounded by the connecting portion 23, the claw portion 21e, and the claw portion 26, and a lip portion protruding from the leg portion. When the door is closed, the lip portion abuts against the body side of the automobile while being elastically deformed, and liquid-tightly seals between the door and the body.

  The protrusion 22 (S) of the rear side frame 16 has a substantially constant cross-sectional shape from the upper end facing the rear corner 17 to the lower end inserted into the door panel. On the other hand, as for the design part 21 (S) of the rear side frame 16, the width of the outer peripheral part 21b (S) gradually increases from the upper part to the lower part in the exposed part 11a, and the outer peripheral part 21b (S) in the insertion part 11b. Is narrower. A design portion in which the outer peripheral portion 21b (S) is formed corresponding to the maximum width during extrusion of the rear side frame 16, and a part of the outer peripheral portion 21b (S) is cut out in a later process so that the width changes in this way. 21 (S) can be obtained.

  In the upper frame 15, the design portion 21 (U), the protruding portion 22 (U), and the connection portion 23 (U) are generally constant from the rear end portion facing the rear corner portion 17 to the front end portion connected to the lock reinforcement 30. It has a cross-sectional shape.

  The lock reinforcement 30 is formed by pressing a plate-shaped metal material, and is surrounded by a bag-shaped (U-shaped) cross-sectional shape 31 that opens toward the vehicle exterior and protrudes toward the vehicle interior, The outer peripheral side flange 32 located in the inner peripheral side of 31 and the outer peripheral side flange 33 located in the outer peripheral side of the surrounding part 31 are provided. A door lock assembly portion 34 to which a door lock mechanism (not shown) is assembled is formed at the lower portion of the lock reinforcement 30. As shown in FIGS. 9 to 11, the surrounding portion 31 has a shape that covers (encloses) the protruding portion 22 (S) of the rear side frame 16 from the inside of the vehicle, and the inner peripheral portion of the protruding portion 22 (S). It has three surfaces: an inner peripheral portion 35 along 22a (S), an outer peripheral portion 36 along outer peripheral portion 22b (S), and an inner side portion 37 along inner side portion 22d (S).

  The rear side frame 16 and the lock reinforcement 30 are fixed by welding in the welded portions W11 to W16 shown in FIGS. The welded portions W11, W12, and W13 are welded between the inner peripheral portion 22a (S) of the protruding portion 22 (S) of the rear side frame 16 and the distal end portion of the inner peripheral portion 35 of the surrounding portion 31 of the lock reinforcement 30. (See FIG. 9). FIG. 9 shows the cross-sectional position of the welded portion W11, but the cross-sectional positions of the welded portion W12 and the welded portion W13 are the same as those in FIG. The welded portion W14 welds between the outer peripheral portion 22b (S) of the protruding portion 22 (S) of the rear side frame 16 and the distal end portion of the outer peripheral portion 36 of the surrounding portion 31 of the lock reinforcement 30 (FIG. 10). reference). The welded portion W15 welds between the outer peripheral portion 21b (S) of the design portion 21 (S) of the rear side frame 16 and the inner peripheral flange 32 of the lock reinforcement 30. The welded portion W16 welds between the inner peripheral portion 22a (S) of the rear side frame 16 and the inner peripheral portion 35 of the lock reinforcement 30.

  The hinge bracket 40 is formed by pressing a plate-shaped metal material. The hinge portion 40 is opened toward the outside of the vehicle and protrudes toward the inside of the bag. And a plate-like portion 42 located on the inner peripheral side. A base part of a door mirror (not shown) or a garnish as an exterior member is fixed to the plate-like part 42. As shown in FIGS. 12 and 13, the surrounding portion 41 has a shape that covers (encloses) the protruding portion 22 (U) of the upper frame 15 from the vehicle inner side, and an inner peripheral portion of the protruding portion 22 (U). It has three surfaces: an inner peripheral portion 43 along 22a (U), an outer peripheral portion 44 along outer peripheral portion 22b (U), and an inner side portion 45 along inner side portion 22d (U). The plate-like portion 42 is formed continuously with the inner peripheral portion 43 (FIGS. 12 and 13). As shown in FIGS. 5 and 6, the surrounding portion 41 extends forward from the front end portion of the upper frame 15, and the extended portion of the surrounding portion 41 extends forward along the longitudinal direction of the upper frame 15. It is bent downward from the end.

  The upper frame 15 and the hinge bracket 40 are fixed by welding at the welded portions W21, W22, and W23 shown in FIGS. 1 and 5 and the welded portions W24, W25, and W26 shown in FIGS. The welded portions W21, W22, and W23 are the inner peripheral portion 22a (U) of the protruding portion 22 (U) of the upper frame 15, and the boundary portions of the inner peripheral portion 43 and the plate-like portion 42 of the surrounding portion 41 of the hinge bracket 40. Are welded (see FIG. 12). FIG. 12 shows the cross-sectional position of the welded portion W22, but the cross-sectional positions of the welded portion W21 and the welded portion W23 are the same as those in FIG. As shown in FIG. 13, a plurality (three) of welding holes 46 are formed at predetermined intervals in the longitudinal direction of the upper frame 15 in the vehicle interior portion 45 of the surrounding portion 41 of the hinge bracket 40. In the portions W24, W25, and W26, the vehicle interior portion 22d (U) of the protruding portion 22 (U) of the upper frame 15 and the vehicle interior portion 45 of the hinge bracket 40 are welded through the welding holes 46. FIG. 13 shows the cross-sectional position of the welded portion W26, but the welded portion W24 and the welded portion W25 have the same configuration as that of FIG.

  The door frame 11 is fixed to the door panel in the state shown in FIGS. 1 and 2 in which the rear side frame 16 and the lock reinforcement 30 are fixed and the upper frame 15 and the hinge bracket 40 are fixed. As shown in FIG. 11, the inner panel 50 has a support portion along the inner surface of the lock reinforcement 30, and the support portion of the inner panel 50 and the lock reinforcement 30 are fixed by welding. As shown in FIG. 14, the hinge side panel 60 has a support portion along the inner surface of the hinge bracket 40, and the support portion of the hinge side panel 60 and the hinge bracket 40 are fixed by welding. Furthermore, the door panel is completed by assembling the outer panel that covers the inner panel 50 and the hinge side panel 60 from the outside of the vehicle. The insertion portion 11b of the door frame 11 is inserted into the space in the door panel below the insertion boundary line L1.

As shown in FIGS. 3 and 4, with the door frame 11 fixed to the door panel, the inner peripheral flange 32, the outer peripheral flange 33 and the door lock assembly 34 of the lock reinforcement 30 are connected to the insertion boundary line L1. It is located below (in the door panel) and is included in the insertion portion 11b. On the other hand, the surrounding portion 31 of the lock reinforcement 30 is formed across both the upper and lower sides of the insertion boundary line L1, that is, the exposed portion 11a and the insertion portion 11b. A portion of the surrounding portion 31 that protrudes above the insertion boundary line L1 is referred to as an exposed surrounding portion 31a, and a portion that is positioned below the insertion boundary line L1 is referred to as an insertion surrounding portion 31b. The lock reinforcement 30 is configured only by the exposed surrounding portion 31a above the insertion boundary line L1. As can be seen from a comparison between FIG. 9 and FIG. 10 and FIG. 11, the exposed surrounding portion 31a is narrowed down to have a smaller cross-sectional size than the insertion surrounding portion 31b. The intervals between the constituent parts and the protrusion 22 (S) of the rear side frame 16 are reduced.

  By surrounding the protruding portion 22 (S) having the cylindrical cross section with the surrounding portion 31 having the bag-shaped cross section from the inside of the vehicle, the cross-sectional strength of the joint portion between the rear side frame 16 and the lock reinforcement 30 is improved. In particular, in the lock reinforcement 30, in addition to the insertion surrounding portion 31b located in the door panel, the exposed surrounding portion 31a protruding above the insertion boundary line L1 is provided, so that the load is easily applied to the rear side frame 16 and the door panel. The periphery of the part can be reliably reinforced, and a remarkable effect can be obtained in improving the strength of the door frame 11. In the rear side frame 16 of the present embodiment, the cross-sectional shape of the protruding portion 22 (S) is substantially constant over the entire length direction, but the protruding portion 22 (S) having such a constant cross-sectional shape is sufficiently used. High strength can be obtained.

  As shown in FIGS. 9 and 10, the exposed surrounding portion 31 a is covered from the vehicle inner side by an inner cover (cover member) 70. The inner cover 70 has an inner peripheral portion 71 along the inner peripheral portion 35 in the exposed surrounding portion 31 a, an outer peripheral portion 72 along the outer peripheral portion 36, and a vehicle inner side portion 73 along the vehicle inner side portion 37. By covering with the inner cover 70, the boundary between the exposed surrounding portion 31a and the protruding portion 22 (S) does not appear in the appearance, and the aesthetic appearance is not impaired. Moreover, safety | security can be ensured by covering the inner cover 70 with the edge of the upper end of the exposed surrounding part 31a. The length of the inner cover 70 in the longitudinal direction of the rear side frame 16 preferably extends to the upper end (rear corner portion 17) of the rear side frame 16, and the inner cover 70 protrudes above the exposed surrounding portion 31a. 22 (S) is covered.

  As shown in FIGS. 5 and 6, with the door frame 11 fixed to the door panel, the surrounding portion 41 of the hinge bracket 40 straddles the exposed portion 11a and the insertion portion 11b, similarly to the surrounding portion 31 of the lock reinforcement 30. Is formed. A portion of the surrounding portion 41 that protrudes above the insertion boundary line L1 is referred to as an exposed surrounding portion 41a, and a portion that is positioned below the insertion boundary line L1 is referred to as an insertion surrounding portion 41b. The exposed surrounding portion 41a covers the protruding portion 22 (U) from the vehicle inner side within a predetermined range on the front end side of the upper frame 15. Since the upper frame 15 is not inserted into the door panel, the insertion surrounding portion 41 b of the hinge bracket 40 is different from the insertion surrounding portion 31 b of the lock reinforcement 30 and does not surround the protruding portion 22 (U) of the upper frame 15. It is located in the door panel alone.

  By surrounding the protruding portion 22 (U) having the cylindrical cross section with the surrounding portion 41 having the bag-shaped cross section from the inside of the vehicle, the cross-sectional strength of the joint portion between the upper frame 15 and the hinge bracket 40 is improved. In particular, the hinge bracket 40 is provided with the exposed surrounding portion 41a that protrudes above the insertion boundary line L1, so that the periphery of the connection portion between the upper frame 15 and the door panel that are easily loaded can be reliably reinforced. A significant effect is obtained in improving the strength of the steel. In the upper frame 15 of the present embodiment, the cross-sectional shape of the projecting portion 22 (U) is substantially constant over the entire length direction, but it is sufficient to use the projecting portion 22 (U) having such a constant cross-sectional shape. It became possible to obtain a high strength.

  As shown in FIGS. 12 and 13, the exposed surrounding portion 41 a is covered from the vehicle inner side by an inner cover (cover member) 80. The inner cover 80 has an outer peripheral portion 81 along the outer peripheral portion 44 in the exposed surrounding portion 41 a and an inner side portion 82 along the inner side portion 45. By covering with the inner cover 80, the boundary between the exposed surrounding portion 41a and the protruding portion 22 (U) does not appear in the appearance, and the aesthetic appearance is not impaired. Moreover, safety | security can also be ensured by covering the inner cover 80 with the edge of the upper end of the exposure surrounding part 41a. The length of the inner cover 80 in the longitudinal direction of the upper frame 15 preferably extends to the rear end (rear corner portion 17) of the upper frame 15, and the inner cover 80 protrudes behind the exposed surrounding portion 41a. Cover part 22 (U).

  As described above, the door frame 11 of the present embodiment is provided with the surrounding portion 31 and the surrounding portion 41 having a shape surrounding the protruding portion 22 on the lock reinforcement 30 and the hinge bracket 40 which are connection members fixed to the door panel. The door frame 11 is made to have a certain cross-sectional shape by increasing the strength, and in particular, in the exposed portion 11a where the door frame 11 protrudes from the door panel, the protruding portion 22 is reinforced by the insertion surrounding portion 31a and the insertion surrounding portion 41a. High strength can be obtained.

  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. For example, in the door frame 11 of the illustrated embodiment, the protruding portion 22 has a cylindrical shape with a closed cross section, but the protruding portion having a non-closed cross section (bag-shaped cross section) that is partially opened is the surrounding portion of the connecting member. The present invention can also be applied to a reinforcing structure. Specifically, among the protrusions 22 of the illustrated embodiment, the protrusions having at least three surfaces of the inner peripheral part 22a, the outer peripheral part 22b, and the vehicle interior part 22d are surrounded by the surrounding part 31 and the surrounding part 41 for reinforcement. can do.

  The present invention is suitable when the frame main body portion is extruded and the cylindrical portion 22 has a constant cross-sectional shape as in the door frame 11 of the illustrated embodiment. However, the present invention can be applied to a door frame in which constituent members are formed by press molding or roll molding.

  In the illustrated embodiment, both the upper frame 15 and the rear side frame 16 are reinforced by the insertion surrounding portion 31a and the insertion surrounding portion 41a, but this reinforcement is applied to either the upper frame 15 or the rear side frame 16. It is also possible to do only.

  Further, the scope of application of the present invention is not limited to a front side door of an automobile, and can be widely applied to any type of vehicle door in which a door frame is assembled to a door panel. For example, when the present invention is applied to a rear side door instead of a front side door, the present invention can be applied to a reinforcing portion of a front side frame instead of the rear side frame 16 of the illustrated embodiment.

  In the illustrated embodiment, the inner cover 70 on the upper frame 15 side and the inner cover 80 on the rear side frame 16 have been described separately. However, an inner cover that is continuous from the upper frame 15 to the rear side frame 16 is employed. Is also possible.

DESCRIPTION OF SYMBOLS 11 Door frame 11a Exposed part 11b Insertion part 12 Window opening 15 Upper frame 16 Rear side frame 17 Rear corner part 21 (S) 21 (U) Design part 21a (S) 21a (U) Inner peripheral part 21b (S) 21b (U ) Outer peripheral part 21c (S) Reinforcing rib 21d (S) 21d (U) Step part 21e (S) 21e (U) Claw part 22 (S) 22 (U) Protruding part 22a (S) 22a (U) Inner peripheral part 22b (S) 22b (U) Outer peripheral part 22c (S) 22c (U) Outer side part 22d (S) 22d (U) Inboard side part 22e (S) 22e (U) Step part 23 (S) 23 (U) Connecting portion 24 (S) 24 (U) Glass run holding portion 25 (S) 25 (U) Weather strip holding portion 26 (S) 26 (U) Claw portion 30 Lock reinforcement (connecting member)
31 Surrounding part 31a Exposed surrounding part 31b Inserting surrounding part 32 Inner peripheral side flange 33 Outer peripheral side flange 34 Door lock assembly part 35 Inner peripheral part 36 Outer peripheral part 37 Car interior part 40 Hinge bracket (connection member)
41 Surrounding part 41a Exposed surrounding part 41b Inserting surrounding part 42 Plate-like part 43 Inner peripheral part 44 Outer peripheral part 45 Car interior part 46 Welding hole 50 Inner panel 60 Hinge side panel 70 Inner cover (cover member)
71 Inner peripheral part 72 Outer peripheral part 73 Car inner side part 80 Inner cover (cover member)
81 Outer peripheral part 82 Car inner side part L1 Insertion boundary line W11-W16 Welding part W21-W26 Welding part

Claims (3)

In the vehicle door frame structure in which the door frame is assembled to the door panel via the connecting member,
The door frame has a design portion located on the vehicle outer side, and a projecting portion having a cylindrical or bag-like constant cross-sectional shape projecting toward the vehicle inner side with respect to the design portion,
Each of the door frame and the connection member has an insertion part inserted into the door panel and an exposed part exposed outside the door panel, and the insertion part of the connection member is fixed to the door panel,
The connection member has a surrounding portion that covers the protruding portion of the door frame from the inside of the vehicle continuously from the insertion portion to the exposed portion ,
The insertion part of the connection member includes the surrounding portion, and a flange extending from the surrounding portion to the inner peripheral side and the outer peripheral side of the door frame,
The vehicle door frame structure characterized in that the exposed portion of the connecting member includes only the surrounding portion . The vehicle door frame structure according to claim 1,
The protruding portion of the door frame has at least a vehicle inner side facing the vehicle inner side, and an inner peripheral portion and an outer peripheral portion spaced apart from the inner peripheral side and the outer peripheral side of the door frame across the vehicle inner portion. ,
The surrounding part of the connecting member is a vehicle door frame structure having three surfaces surrounding the inner side part, the inner peripheral part and the outer peripheral part of the protruding part.   3. The vehicle door frame structure according to claim 1, further comprising a cover member that covers the surrounding portion of the connection member from the vehicle inner side at the exposed portion. 4.

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