JP2010228476A - Reinforcement structure for vehicle door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcement structure for a vehicle door, for attaining reinforcement effectively, while restraining a weight from increasing. <P>SOLUTION: This reinforcement structure for the vehicle door includes a door body, a door skin 11 provided in an outside of the door body, and door glass 20 stored between the door body and the door skin 11, a door skin stiffener 13 is provided, in an inside of an upper end 11u of the door skin 11, to be extended along the upper end 11u, with an upper edge part 13u connected to the upper end 11u of the door skin 11, the door skin 11 is formed with a folded part 21 formed along an extended direction of the door skin stiffener 13, both end parts 13f, 13r formed projectedly from a side edge part of the door glass 20 are fixed onto the door body in the door skin stiffener 13, and a lower edge part 13k in an extension-directional intermediate part of both the end parts 13f, 13r is formed as a support part S extended up to the folded part 21 of the door skin 11 to be connected. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a reinforcing structure for a vehicle door.

  Some vehicle doors have a reinforcing member attached to the inside of the upper edge of the door outer panel. By this reinforcing member, the rigidity around the opening for raising and lowering the door glass formed at the upper end of the door can be secured (see Patent Document 1).

JP-A-62-103222

  Although the door outer panel can be reinforced by the reinforcing member, the weight increases accordingly. Therefore, a structure that can reinforce the door while minimizing the increase in weight is desired.

  Accordingly, an object of the present invention is to provide a reinforcing structure for a vehicle door that can effectively reinforce while suppressing an increase in weight.

In order to achieve the above object, the invention described in claim 1 includes a door body (for example, the door body 2 in the embodiment) and a door skin (for example, the door skin 11 in the embodiment) provided outside the door body. And a door glass (for example, the door glass 20 in the embodiment) housed between the door body and the door skin, and inside the upper end portion (for example, the upper end portion 11u in the embodiment) of the door skin, A reinforcing member (for example, the door skin stiffener 13 in the embodiment) that extends along the upper end portion of the door skin and is connected to the upper edge portion (for example, the upper edge portion 13u in the embodiment) of the door skin. The door skin is formed with a folded portion (for example, the folded portion 21 in the embodiment) along the extending direction of the reinforcing member, and the front skin The reinforcing member has both end portions (for example, both end portions 13f and 13r in the embodiment) formed so as to protrude from the side edge portion of the door glass are fixed to the door body, and an intermediate portion in the extending direction of the both end portions. The lower edge part (for example, the lower edge part 13k in the embodiment) of the part is formed as a support part (for example, the support part S in the embodiment) that extends and is connected to the bent part.
The invention described in claim 2 is characterized in that in the reinforcing member, lower edge portions respectively extending from the support portion connected to the bent portion of the door skin to the both end portions are formed in a straight line.
The invention described in claim 3 is characterized in that the reinforcing member is formed with holes (for example, holes 26 to 29 in the embodiment) along the extending direction of the both ends.
According to a fourth aspect of the present invention, the door skin is provided with a handle bracket (for example, the handle patch 12 in the embodiment) for attaching a door outer handle, and the handle bracket is connected to the bent portion, and It is fixed to the reinforcing member.
The invention described in claim 5 is characterized in that the reinforcing member is attached to the door skin in a state where the handle bracket is fixed and integrated.

According to the first aspect of the present invention, since the reinforcing member only has to be extended to the folding portion of the door skin using a part of the intermediate portion in the extending direction as a support portion, the shape of the reinforcing member can be made as small as possible. It is possible to reduce the weight.
In addition to the both ends fixed to the door body avoiding the door glass, the reinforcing member is connected to the folded portion of the door skin as a supporting portion, so that the reinforcing member is supported at three points. Accordingly, it is possible to sufficiently ensure the improvement in the rigidity of the door skin by the reinforcing member and the improvement in the rigidity of the door glass opening at the upper end.
According to the second aspect of the present invention, the rigidity can be reliably maintained by avoiding a sudden change in cross section in the extending direction of the reinforcing member.
According to the invention described in claim 3, the reinforcing member can be further reduced in weight.
According to the fourth aspect of the present invention, the rigidity of the door skin and thus the door body can be further increased by fixing the reinforcing member to the handle bracket connected to the bent portion.
According to the invention described in claim 5, the assembly work can be made efficient.

It is the disassembled perspective view which looked at the door for vehicles of the embodiment of this invention from the vehicle room outside. It is the disassembled perspective view which looked at the vehicle door of embodiment of this invention from the vehicle interior side. It is a rear view of the door for vehicles of this embodiment. It is a front view of the door for vehicles of an embodiment of this invention. It is the figure which looked at the door skin partially from the back side. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is sectional drawing which follows the CC line of FIG. It is sectional drawing which follows the DD line | wire of FIG. FIG. 6 is an enlarged view of the door outer handle mounting portion of FIG. 5 as viewed from the outside of the passenger compartment.

Next, embodiments of the present invention will be described with reference to the drawings. In the figure, the upper side of the vehicle is shown as UP, the left side as LH, and the front side as FR.
1 and 2, reference numeral 1 denotes a front side door for a so-called sashless type vehicle. The front side door 1 includes a door body 2 formed in a frame shape from an aluminum material. Specifically, the door body 2 includes a front frame 3 constituting the front side part, a rear frame 4 constituting the rear side part, and an upper frame 5 connecting the upper end part and the lower end part of the front frame 3 and the rear frame 4 respectively. The lower frame 6 is formed in a frame shape.

Here, the front frame 3 and the rear frame 4 are formed by press molding an aluminum material, and the upper frame 5 and the lower frame 6 are formed by trimming after extrusion molding the aluminum material.
A mirror base 7 to which a door mirror (not shown) is attached is formed on the upper part of the front frame 3, and an attachment bracket 9 of an airbag module 8 is attached to the upper frame 5 so as to overlap the upper frame 5 on the vehicle interior side.

Here, a door skin 11 constituting the outer plate of the front side door 1 is attached to the outside of the door body 2. A handle patch 12 for attaching a door outer handle from the back side is attached to the door skin 11 around the opening 35 around the opening 35 of the door skin 11 and a triangular door skin stiffener 13 is attached to the upper edge. . The handle patch 12 and the door skin stiffener 13 are integrated and bonded and fixed to the door skin 11, but are shown on the door body 2 side in FIG.
A door beam 14 is fixed to the outside of the passenger compartment at a substantially central portion in the vertical direction of the front frame 3 and the rear frame 4 across the both.

As shown in FIG. 2, a regulator unit 16 for raising and lowering the door glass 20 so as to cover the opening 15 formed by the front frame 3, the rear frame 4, the upper frame 5, and the lower frame 6 from the vehicle interior side. The base plate 17 is attached to the door body 2. The base plate 17 functions as a door inner panel corresponding to the door skin 11.
The airbag module 8 in which the airbag is unitized is attached to the mounting bracket 9 of the airbag module 8 attached to the vehicle interior side of the upper frame 5. Here, the airbag module 8 has an upper lid that opens at the outer edge of the passenger compartment and deploys the airbag to the inner side of the passenger compartment. Note that a door interior material (not shown) integrated with an armrest or the like is attached to the lower portion of the airbag module 8.

  As shown in FIG. 3, a latch groove 18 for receiving a striker of the door lock device is formed in the rear corner portion 4 b of the rear frame 4 constituting the rear end portion of the front side door 1. As shown in FIG. 4, hinge brackets 19, 19 that support the front side door 1 so that it can be opened and closed on the vehicle body side are attached to the front surface 3 f of the front frame 3 that constitutes the front end of the front side door 1. It has been.

  As shown in FIGS. 5 and 6, a door glass 20 supported by the regulator unit 16 described above is disposed between the door body 2 and the door skin 11 so as to be vertically movable. The door skin stiffener 13 is a member that extends in the vehicle front-rear direction of the door body 2 along the upper end portion of the door skin 11 inside the upper end portion of the door skin 11. The upper end portion 11u of the door skin 11 is connected to the upper edge portion 13u of the door skin stiffener 13 by winding so that the upper end portion 11u wraps around from the outside of the passenger compartment.

  A folding portion 21 is formed in the door skin 11 in the longitudinal direction of the vehicle along the extending direction of the door skin stiffener 13. The bent portion 21 is a portion that overlaps the handle patch 12 of the door outer handle and is convex to the outside of the passenger compartment, and has a surface rigidity of the door skin 11 and a door glass 20 at the upper end of the front side door 1. The rigidity of the opening is secured.

  Both end portions 13f and 13r (the front end portion 13f and the rear end portion 13r) of the door skin stiffener 13 protrude from the side edge portion of the door glass 20 in the vehicle front-rear direction, and the doors 13f and 13r are connected to the doors 13f and 13r. Fixing portions F and R (front-side fixing portion F and rear-side fixing portion R) for the main body 2, that is, the front frame 3 and the upper frame 5, are respectively set. Further, the lower edge portion 13k of the intermediate portion in the extending direction of both end portions 13f and 13r of the door skin stiffener 13 extends downward to the folding portion 21 of the door skin 11, which is connected to the folding portion 21 of the door skin 11. It is comprised as the support part S to be performed. Here, as long as the fixed portions F and R are supported by the front frame 3 and the upper frame 5 as a result, they may be fixed to the panel material fixed to the front frame 3 and the upper frame 5.

The door skin stiffener 13 is formed by a straight line in which lower edge portions 13k extending from the support portion S connected to the bent portion 21 of the door skin 11 to both end portions 13f and 13r are inclined obliquely upward. The lower edge portion 13k is also partially coated with the adhesive 22 and joined to the door skin 11 (shown by a chain line in FIG. 6).
The door skin stiffener 13 is formed with a plurality of holes 26 to 29 along the extending direction of both end portions 13f and 13r. The hole portions 26 to 29 have a larger width in the vertical direction toward the both end portions 13f and 13r so that the distance from the upper edge portion 13u or the lower edge portion 13k of the door skin stiffener 13 is substantially constant. It is formed so that the width dimension in the vertical direction becomes smaller. In this embodiment, one hole portion 26 is provided at the intermediate portion in the extending direction, a triangular hole portion 27 is provided behind the hole portion 26, a trapezoidal hole portion 28 and a triangular hole portion 29 are provided in front of the hole portion 26 in this order. I have. The holes 26 to 29 are not shown in FIG.

  Two beads 23 bulging in an arc shape outside the passenger compartment are provided in the vehicle front-rear direction at the lower portion of the upper edge portion 13u of the door skin stiffener 13, and the lower portion of the bead 23 is lowered along the door glass 20, In the intermediate portion in the extending direction of the stiffener 13, the support portion S is bent before the support portion S to the outside of the passenger compartment. The support portion S is flanged along the surface of the door skin 11 to form an adhesive reservoir 24. Here, the support portion S has a width D set in the vehicle front-rear direction, and this portion is joined to the door skin 11 by the adhesive 22. A molding 25 having a lip that is in close contact with the door glass 20 from the outside of the passenger compartment is attached to the upper end 11 u of the door skin 11.

  7 to 9 show a situation in which both end portions 13 f and 13 r of the door skin stiffener 13 are attached to the front frame 3 and the upper frame 5. As shown in FIG. 7, the front end 13 f of the door skin stiffener 13 is fixed to the front frame 3 by a fixing portion F together with the hinge stiffener 32 by a bolt 30 from the vehicle interior side. As shown in FIGS. 8 and 9, the rear end portion 13 r of the door skin stiffener 13 is fixed to the upper frame 5 by a fixing portion R by a bolt 31 from the vehicle interior side. Here, as shown in FIG. 9, the upper frame 5 is joined to the rear frame 4, and the lock stiffener 36 is joined to the rear frame 4. The rear end portion of the lock stiffener 36 is joined to the door skin 11.

  FIG. 10 is a view of a state in which a door skin stiffener 13 for reinforcing the door skin and a handle patch 12 for reinforcing the door skin to which the door outer handle is attached are attached to the back side of the door skin 11 from the outside of the passenger compartment. The upper edge portion 12u of the handle patch 12 is superposed on the lower edge portion 13k of the rear end portion 13r on the rear side of the door skin stiffener 13 and is spot-welded (* portion) to be integrated. Here, the opening 34 is provided in the handle patch 12 so as to align with the opening 35 of the door skin 11, and the periphery (one of the upper edge 12 u and the lower edge 12 k of the opening 34 on the door skin 11 side). The adhesive 22 is applied to the adhesive layer.

  Then, the adhesive 22 applied to the adhesive reservoir 24 of the support portion 2 of the door skin stiffener 13, the adhesive 22 at the periphery of the opening 34 of the handle patch 12, and the adhesive 22 at the lower edge portion 13 k are used for door assembly. By heating between the door skin 11 and the door skin 11 in the painting process, both of them integrated by spot welding are bonded and fixed to the door skin 11 to reinforce the door skin 11 from the back surface. Here, the lower edge portion 12k below the opening 34 of the handle patch 12 to which the adhesive 22 is applied is connected to the bent portion 21 of the door skin 11, and is illustrated around the opening 34 of the handle patch 12. The door outer handle is not attached through the bracket.

  According to the above embodiment, the door skin stiffener 13 only has to be extended to the folding portion 21 of the door skin 11 with a part of the intermediate portion in the extending direction as the support portion S. The shape can be made as small as possible, and the weight can be reduced.

  Here, in the door skin stiffener 13, in addition to the fixing portions F and R that are attached to the door main body 2 (the front frame 3 and the upper frame 5) avoiding the door glass 20, an intermediate portion in the extending direction serves as the support portion S Since the door skin stiffener 13 is attached to the folded portion 21 of the door skin 11, the rigidity of the door skin stiffener 13 can be sufficiently improved by supporting the door skin stiffener 13 at three points.

  The door skin stiffener 13 has a lower edge portion 13k that extends from the support portion S connected to the bent portion 21 of the door skin 11 to both end portions 13f and 13r. It is possible to avoid a sudden change in cross-section in the present direction, and it is possible to reliably maintain rigidity.

  Since the door skin stiffener 13 has holes 26 to 29 formed in the intermediate portions in the extending direction at both ends thereof, the door skin stiffener 13 can be further reduced in weight. In order to ensure a substantially constant distance to the upper edge 13u and the lower edge 13k of the door skin stiffener 13, the width in the vertical direction is larger at the middle part, and the width dimension in the vertical direction is closer to both end parts 13f and 13r. Since it is formed to be small, the mounting rigidity of the upper edge portion 13u and the lower edge portion 13k with respect to the door skin 11 can be secured with a good balance.

  The door skin 11 is provided with a handle patch 12 for attaching a door outer handle. The handle patch 12 is connected to the folding portion 21 of the door skin 11 from the back side and is fixed to the door skin stiffener 13. Therefore, by fixing the handle patch 12 connected to the folding part 21 of the door skin 11 to the door skin stiffener 13 which is also fixed to the folding part 21 of the door skin 11 by the support part S, the door skin 11 and thus the front side door 1 is fixed. The rigidity and the rigidity of the opening of the door glass 20 at the upper end of the front side door 1 can be further enhanced.

  The door skin stiffener 13 is fixed to the door skin 11 with the adhesive 22 in the painting process of the door assembly line in the state where the handle patch 12 is fixed, so that both door skin stiffeners 13 are attached to the door skin 11 separately. Assembling work can be made efficient.

  In addition, this invention is not restricted to the said embodiment, For example, although the front side door 1 was demonstrated as a vehicle door, you may apply to a rear side door.

2 Door body 11 Door skin 11u Upper end 12 Handle patch (handle bracket)
13 Door skin stiffener (reinforcement member)
13u Upper edge part 13f, 13r End part 13k Lower edge part 20 Door glass 21 Folding part 26-29 Hole S Support part

Claims (5)

  A door main body, a door skin provided outside the door main body, and a door glass housed between the door main body and the door skin, and an inner side of an upper end portion of the door skin at an upper end portion of the door skin. A reinforcing member extending along the upper end portion of the door skin is connected to the door skin, and the door skin is formed with a bent portion along the extending direction of the reinforcing member. The both ends of the door glass projecting from the side edge are fixed to the door body, and the lower edge of the intermediate portion in the extending direction of the ends extends to the fold. The reinforcing structure for a vehicle door according to claim 1, wherein the reinforcing structure is formed as a support portion.   2. The reinforcing structure for a vehicle door according to claim 1, wherein the reinforcing member has a straight lower edge portion extending from the support portion connected to the bent portion of the door skin to the both end portions.   The reinforcing structure for a vehicle door according to claim 1, wherein the reinforcing member has a hole formed along an extending direction of the both end portions.   The door skin is provided with a handle bracket for attaching a door outer handle, and the handle bracket is connected to the bent portion and fixed to the reinforcing member. The reinforcement structure of the door for vehicles as described in any one.   5. The vehicle door reinforcing structure according to claim 4, wherein the reinforcing member is attached to the door skin in a state where the handle bracket is fixed and integrated.

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