JPH0785966B2 - Vehicle door structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle door structure, and particularly relates to a vehicle door structure that greatly contributes to weight reduction of the vehicle and greatly reduces the number of door assembling steps. Regarding the door structure.

<< Prior Art >> Usually, as shown in FIGS. 4 and 5, a vehicle door has a door outer panel 1 and a door inner panel 2 welded and fixed along its lower edge and both side edges as vehicle body panels. After that, the door trim 3 is fixed to the inner surface of the door inner panel 2 by clips or screws.

Further, functional parts such as a regulator handle unit, a speaker unit, and an inside handle unit provided on the door are fixed to the back side of the door inner panel 2.

<< Problems to be Solved by the Invention >> In the conventional door structure as described above, since press-formed products of a steel plate are used for both the door outer panel and the door inner panel, it is very overlapped and the weight of the vehicle is reduced. It was a big obstacle in trying.

Furthermore, when paying attention to the door manufacturing process, after the door outer panel and the door inner panel are press-molded into the required shapes, both panels are welded and fixed, and the door trim is attached to the door inner panel side. There is a problem in that the number of steps is very large and the cost is significantly increased.

The present invention improves the strength of the door trim and eliminates the door inner panel, thereby achieving a significant weight reduction.
Moreover, it is an object of the present invention to provide a vehicle door structure capable of significantly shortening the manufacturing process.

<< Means for Solving the Problems >> In order to achieve the above object, a vehicle door structure according to the present invention is composed of two members, a door outer panel and a synthetic resin panel attached to the door outer panel. The mounting bracket fixed to the door outer panel or the mounting flange formed on the tip edge of the side wall fixed to the door outer panel is attached to the peripheral edge of the synthetic resin panel with screws, clips, etc. It is characterized in that the fixture of is fixed by sea.

<Operation> Since the vehicle door structure configured as described above basically includes the door outer panel and the synthetic resin panel as the trim portion, the door inner panel can be eliminated. Becomes

Further, since the molding of the vehicle body panel is completed only by molding the door outer panel and the trim component is fixed to the door outer panel, the door manufacturing process can be significantly shortened.

<< Description of Embodiments >> Hereinafter, various embodiments of a vehicle door structure according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a first embodiment of the door structure of the present application, and is a perspective view and a sectional view as seen from the outside of the vehicle, and FIGS. 2 and 3 show second and third embodiments of the present invention. It is each perspective view and sectional drawing seen from the room side.

First, a first embodiment of the present invention will be described with reference to FIG.

FIG. 1 (a) is an overall perspective view showing a state in which a synthetic resin panel is attached to a door outer panel, as seen from the outside of the vehicle,
FIG. 6B is a sectional view showing a state in which the same synthetic resin panel is attached to the door outer panel.

In the drawings, a synthetic resin panel 11 attached to the door outer panel 10 has an outer shape substantially equal to that of the door outer panel 10, and the resin material and manufacturing method of the synthetic resin panel 11 are not particularly limited, and if cooled, A thermoplastic resin such as polypropylene resin or ABS resin may be injection-molded, or a sheet-shaped thermoplastic resin material may be heat-softened and then cold-press molded. Further, polypropylene composite resin material (filler such as glass fiber is mixed to increase strength), SMC or the like may be compression molded into a required shape by a press molding method.

Furthermore, if desired, the synthetic resin panel 11 has a surface material 12 such as a PVC sheet, an F / PVC sheet, or a thermoplastic sheet integrally attached to the surface thereof, if desired, to improve the surface appearance and surface feel. good.

The synthetic resin panel 11 has reinforcing ribs 13 integrally formed on the rear surface side so as to have the function of a conventional steel sheet door inner panel, and the strength is remarkably improved, and the inside handle unit 14 and Bosses 16 for mounting functional parts such as the regulator handle 15 are formed upright at appropriate places.

Furthermore, these units 14, 15 etc. are attached to the door outer panel 1
A double wall with a space 17 arranged between the door outer panel 1 and the synthetic resin panel 11 in order to accommodate between 0 and the synthetic resin panel 11 and in consideration of problems such as sound insulation. In order to have a structure, in this example, a side wall 18 forming a substantially orthogonal surface toward the door outer panel 10 side is bent and formed on the outer peripheral edge of the synthetic resin panel 11, and the tip end edge thereof is for mounting. The flange 19 is formed so as to be substantially horizontal with the surface of the door outer panel 10, and the mounting flange 19 is fixed to the door outer panel 10 with screws 20 to fix the side wall 18.
A space 17 is formed between the door outer panel 10 and the synthetic resin panel 11 with reference to the dimension of.

When fixing the screw 20 as shown in FIG. 1 (b), a mounting bracket 21 having a substantially U-shaped cross section is welded and fixed to the door outer panel 10 at an appropriate position. The synthetic resin panel 11 is attached to the door outer panel 10 by aligning the holes 21a with the mounting holes 11a formed in the synthetic resin panel 11 and inserting and fixing the screws 20 into these mounting holes 11a and 21a. It

FIG. 2 shows a second embodiment of the vehicle door structure according to the present invention, and FIG. 2 (a) is a perspective view of a main part seen from the interior side showing a state in which a synthetic resin panel is attached to a door outer panel. FIG. 2 (b) is a cross-sectional view of essential parts showing a state in which the synthetic resin panel is attached to the door outer panel. This second
Also in the embodiment, the vehicle door structure is made up of two members, that is, the door outer panel 10 and the synthetic resin panel 11 as in the above-mentioned embodiment, and the conventional door inner panel is abolished, which is different from the above-mentioned embodiment. That is, one end portion of the side wall 22 formed by bending a steel plate material into a substantially Z-shaped cross section is welded and fixed to the inner surface side of the peripheral edge of the door outer panel 10.

At the other end of the side wall 22, a door outer panel is provided.
A mounting flange 23 is formed so as to be substantially parallel to the surface 10, and the synthetic resin panel 11 is mounted on the mounting flange 23.
It suffices to additionally attach the outer peripheral portion and fix the screw 20, and the side wall 22 and the mounting flange 23 may be formed on the door outer panel 10 side as in this example.

Next, FIGS. 3 (a) and 3 (b) show a slight modification of the above-described second embodiment. In this embodiment, the head of the screw 20 is not exposed to the outside and is decorated. In this example, an L-shaped mounting flange 25 (which is substantially parallel to the door outer panel 10) is formed along the tip edge of the side wall 24 so that the synthetic resin panel 11 When the outer peripheral edge (both side edges and lower edge) as the mounting portion is bent in advance and the peripheral edge portion of the synthetic resin panel 11 is fixed to the mounting flange 25 surface of the side wall 24 with the screw 20, As shown in (b), a screw 20 is set in a portion that is inconspicuous from the passenger compartment side.

<< Effect >> Since the present invention is configured as described above, the following effects can be obtained.

A door outer panel and a synthetic resin panel with a predetermined mechanical strength that can be attached to the door outer panel.
Since it is basically composed of members, the conventional door inner panel can be eliminated, and the weight of the vehicle can be significantly reduced.

Furthermore, in the door manufacturing process, the process of fixing the synthetic resin panel to the door outer panel is sufficient.
Compared to the conventional process of welding and fixing the door outer panel and the door inner panel after predetermined press molding, and further screwing or clipping the door trim, the door manufacturing process can be significantly shortened. There is an effect that you can expect a significant cost reduction.

In addition, since the synthetic resin panel can set reinforcing ribs, mounting bosses, etc. at desired positions, the degree of freedom in shape is extremely greater than that of steel plates. For example, conventionally, the strength of the door is partially strengthened. In this case, extremely troublesome work such as overlapping and welding steel plates to the part was required, but according to the present invention, it is sufficient to stand the reinforcing ribs or set the plate thickness of the panel to be thick, In addition to the effect that can be easily dealt with, it also has ancillary effects such as improved corrosion resistance compared to steel sheet materials.

[Brief description of drawings]

FIG. 1 shows a first embodiment of a vehicle door structure according to the present invention, and FIG. 1 (a) is an overall perspective view seen from the vehicle outside showing a state in which a synthetic resin panel is attached to a door outer panel. FIG. 1 (b) is a sectional view showing a state in which a synthetic resin panel is attached to an outer door panel, and FIGS. 2 and 3 show another embodiment of the present invention. , Third
FIG. 2 (a) is a perspective view of a main part as seen from the vehicle interior side showing a state in which a synthetic resin panel is attached to a door outer panel, and FIGS. 2 (b) and 3 (b) are synthetic resin panels on the door. A cross-sectional view of essential parts showing a state of being attached to the outer panel,
4 and 5 are a longitudinal sectional view and a lateral sectional view, respectively, showing a conventional door structure. 10 …… Outer door panel 11 …… Synthetic resin panel 12 …… Surface material 13 …… Reinforcing rib 14 …… Inside handle unit 15 …… Regulator handle unit 16 …… Mounting boss 18,22,24 …… Sidewall 19 , 23,25 …… Mounting flange 20 …… Mounting screw 21 …… Mounting bracket

Claims (4)

[Claims] 1. A door outer panel, and a synthetic resin panel attached to the door outer panel, the synthetic resin panel having a shape substantially equal to the outer shape of the door outer panel, and a peripheral portion of the synthetic resin panel. A side wall that is bent toward the door outer panel side is formed, and an attachment flange that extends outward substantially parallel to the door outer panel surface is formed at the edge of this side wall, and the side wall of the door outer panel is formed. The synthetic resin panel can be attached to the door outer panel by stacking the above mounting flange on the mounting bracket fixed to the inner surface of the peripheral edge and having a generally U-shaped cross section, and fixing the mounting tool from the vehicle interior side. The vehicle door structure characterized in that 2. A door outer panel and a panel made of synthetic resin, which has a shape substantially equal to the outer shape of the door outer panel and is attached to the door outer panel, and which extends along the peripheral edge of the door outer panel. While fixing one end of the side wall having a substantially Z-shaped cross section, the peripheral edge of the synthetic resin panel is overlapped with the mounting flange installed at the other end of the side wall, and the fixture is fixed from the passenger compartment side. do it,
A vehicle door structure characterized in that a synthetic resin panel is attached to the door outer panel. 3. A door outer panel and a panel made of synthetic resin, which has a shape substantially equal to the outer shape of the door outer panel and is attached to the door outer panel, along the peripheral edge of the door outer panel. , A mounting flange is set on the edge of the side wall fixed so as to form a surface substantially orthogonal to the door outer panel, and the peripheral edge of the synthetic resin panel is almost parallel to the side wall mounting flange. The part is bent, the mounting part of the synthetic resin panel is overlapped on the mounting flange, the mounting tool is fixed from the inside of the vehicle interior, and the synthetic resin panel is mounted on the door outer panel. Vehicle door structure. 4. A peripheral edge portion of a synthetic resin panel is superposed on a mounting bracket fixed to an inner surface of a peripheral edge of a door outer panel or a mounting flange formed on an end edge of a side edge, The vehicle door structure according to claim 1, 2 or 3, wherein the synthetic resin panel side is fixed with screws.