JPH0311048Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a door structure for an automobile, such as a front door of a passenger car, for example.

(Prior Art) Conventionally, as an example of the above-described automobile door structure, there is, for example, a device described in Japanese Utility Model Application Publication No. 163015/1983.

That is, the door structure is such that both the inner panel and the outer panel are made of synthetic resin, and the front end, lower end, and rear end of the inner panel and the outer panel are polymerized and joined, respectively.

Although this conventional door structure has the advantage of reducing the weight of the door body and improving its appearance, the rigidity of the door body itself and the mounting rigidity of functional parts on the inner panel are weak, and the above-mentioned inner panel and outer panel Since the structure does not have an opening that covers the entire surface below the belt line, it has a problem that the workability of assembling functional parts such as a window regulator and window glass to the inner panel is poor.

In addition, stress tends to concentrate at the joint between the inner panel and the outer panel on the door hinge side.
The problem was that the durability of the joint was weak.

(Purpose of the invention) This invention can improve the rigidity of the door body itself and the mounting rigidity of functional parts on the inner panel without damaging the door appearance.
In addition, it is an object of the present invention to provide a door structure for an automobile that has good workability in assembling the functional parts, prevents stress from being concentrated on the hemming portion on the door hinge side, and improves door rigidity.

(Structure of the device) This device includes an inner panel to which functional parts are attached, and an outer panel with an opening formed in the center, and the front end, lower end, and rear end of the inner panel and the outer panel are joined by polymerization. At the same time, the peripheral edge of the opening of the outer panel is joined to the inner panel so that at least the front and rear side edges of the door body are formed in a closed cross section, and the outer surface of the outer panel is covered with a synthetic resin outer plate,
Furthermore, a door hinge is attached to the front edge or the rear edge of the closed cross-section structure via a hinge reinforcement, and the hinge reinforcement is fixed to the closed cross-section structure so as to cross the closed cross-section. It is characterized by a door structure of

(Effects of the invention) According to this invention, since at least the front and rear side edges of the door body described above are formed into a skeleton structure with a closed cross section, it is possible to improve the rigidity of the door body itself.

Further, since the above-mentioned inner panel and outer panel are formed by pressing a rigid plate, for example, and the functional parts are attached to the inner panel, there is an effect that the mounting rigidity of the functional parts can be improved.

Furthermore, the above-mentioned opening is formed in the center of the outer panel, and functional parts can be assembled to the above-mentioned inner panel through this opening, so that it is possible to improve the workability of assembling the functional parts. There is an effect that can be achieved.

Furthermore, since the outer surface of the outer panel is covered with a synthetic resin outer plate, the appearance of the door body is not impaired in any way.

In addition, since the hinge reinforcement that crosses the aforementioned closed cross section is provided, stress is not concentrated on the hemming portion on the door hinge side, and the door rigidity can be improved.

(Example) An example of this invention will be described in detail below based on the drawings.

The drawings show the structure of an automobile door;
3, the door body 1 includes an inner panel 2 made of a rigid plate formed by press working.
The door lock device 3, the window regulator 4, and the door hinges 5, 5 as functional parts attached to the inner panel 2 are made of a rigid plate formed by press working, and have an opening 6 in the center. The formed outer panel 7, a pair of front and rear guide members 8, 8 attached to this outer panel 7, a window glass 9 guided so as to be movable up and down by these guide members 8, 8 and corresponding to the flat surface, and the above-mentioned outer panel 7. a reinforcement 10 attached to the outer panel 7, an outer panel 11 made of synthetic resin that covers the outer surface of the outer panel 7, an outer handle 13 attached to the square opening 12 of the outer panel 11, and a round opening 14 of the outer panel 11 described above. The key cylinder 15 is attached to the key cylinder 15.

The above-mentioned inner panel 2 has a front end 17, a lower end 18, and a rear end 19 that are bent toward the outer side, which are integrally formed on the front end, lower end, and rear end of the panel main body 16, respectively, and the belt line part 20 has a The upper edge portion 21 extending from the upper edge portion 21 is integrally bent toward the outer side.

Further, a substantially gate-shaped sash 22 is integrally formed on the upper part of the above-mentioned inner panel 2.

The aforementioned outer panel 7 has a front end 24 and a lower end 2 that are bent outward at the front end, lower end, and rear end of the peripheral edge 23 of the opening 6 as the panel main body, respectively.
5. In addition to integrally forming the rear end 26, an upper edge 27 extending in the front-rear direction is integrally formed on the belt line portion 20, and this upper edge 27 is connected to the elevation line 28 of the windshield 9 as shown in FIG. It is bent so that it is located on the inside of the door.

Further, a substantially gate-shaped sash 29 is integrally formed on the upper part of the above-mentioned outer panel 7.

The inner panel 2 thus constructed and the outer panel 7 are joined as shown in FIGS. 2, 4, and 8.

That is, the front end 17 of the inner panel 2 and the front end 24 of the outer panel 7 are joined together, and the lower end 18 of the inner panel 2 and the lower end 25 of the outer panel 7 are joined together.
and the rear end 19 of the inner panel 2,
At the same time, the peripheral edge 23 of the opening 6 of the outer panel 7 is joined to the panel main body 16 of the inner panel 2, and the front edge, lower edge, and rear edge of the door body 1 are joined together with the rear end 26 of the outer panel 7. They form closed cross sections 30, 31, and 32, respectively.

Further, the upper edge 21 of the inner panel 2 and the upper edge 27 of the bent outer panel 7 are joined to each other, and the belt line portion 20 extends in the front and back direction of the door, and A closed cross section 33 connecting the edges is formed.

Furthermore, the satsushi 22 of the inner panel 2 mentioned above,
Join the sash 29 of the outer panel 7 to each other,
A substantially gate-shaped closed cross section 34 is formed.

Here, at the outer ends of the closed sections 30, 31, and 32 of the front edge, lower edge, and rear edge, respectively,
Hemming portions 35, 36, and 37 are formed by sandwiching the inner panel 2 between the outer panels 7 in a rolled-up manner.

By the way, the lower ends 18 and 25 of the inner panel 2 and the outer panel 7, which form the closed cross section 31 of the lower edge described above, are configured as follows.

That is, as shown in FIG.
Holes for installing grommets 38 and 39 are formed in holes 8 and 25, and before the grommets 38 and 39 are installed, the inside of the closed cross section 31 is painted through these holes to improve the rust prevention effect and to improve the final line. The above-mentioned holes are sealed with grommets 38 and 39.

In addition, in the structure of each of the lower ends 18 and 25 described above, the flange part 41 of the lower end 25 on the outer panel 7 side is made longer than the flange part 40 of the lower end 18 on the inner panel 2 side, and this flange part 41 is shaped like an L. It is bent into a shape to improve sealing performance.

Furthermore, a sealing member 43 such as a weather strip that comes into contact with the side sill 42 is integrally joined to the lower surface of the lower end 18 on the inner panel 2 side.

A plurality of service holes 44 are bored in the panel main body 16 of the inner panel 2 described above.

The closed cross section 30 of the front edge, that is, the door hinge side mentioned above.
Inside, as shown in FIG. 5, a hinge reinforcement 45 is disposed so as to cross this closed section 30.

In this embodiment, the hinge reinforcement 45 described above is welded and fixed to the front end 17 of the inner panel 2 as a closed cross-section structure.

And this hinge reinforcement 45
The above-described door hinge 5 is attached to the overlapping portion of the front end 17 and the front end 17 via a set bolt 46.

This door hinge 5 includes a hinge mail 47, a hinge female 48, and each of these mails 47, 48.
The hinge pin 49 is pivotally connected to the hinge pin 49.

Incidentally, as shown in FIG. 6, the body portions of the door lock device 3 and the key cylinder 15 are disposed within the closed section 32 on the rear edge, that is, the door lock side.

A service hole for lock insertion is formed at a vertical position offset from the mounting portion of the door lock device 3 described above, and the door lock device 3 is installed through this service hole.

Further, an insertion space for an operating rod 50 that connects the above-mentioned door lock device 3 and an inner handle (not shown) is formed at the joint between the inner panel 2 and the outer panel 7, as shown in FIG.

In other words, a part of the joining portion of each of the panels 2 and 7 described above is bulged out in an arc shape as shown in FIG.
1 and 52, and an insertion space 53 for the operating rod 50 is formed between these bulging portions 51 and 52. After inserting the operating rod 50 into this space 53, a sealing grommet 54 is inserted to fill the gap. It's blocked.

By closing the above-mentioned gap with the grommet 54, it is possible to improve the sealing performance to prevent water and dust from entering into the closed section 32, and also to prevent water and dust from entering when the operating rod 50 slides when opening and closing the door. Efforts are being made to attenuate abnormal noise.

The front end 24 and rear end 26 of the outer panel 7 as a closed section structure forming the closed sections 30 and 32 on the door hinge side and the door lock side are formed by lowering the panel 7 toward the inner panel side and bending it into an L shape. mounting seats 55, 55 are formed.

Each of these mounting seats 55, 55 has a guide member 8, 8 having a U-shaped cross section as shown in FIG.
are fixed with screws, and a pair of front and rear guide members 8, 8 are configured to guide the up and down movement of the window glass 9.

Further, on the outer side of each of the above-mentioned mounting seats 55, 55, the front end 24 and rear end 26 of the outer panel 7
Seats 56, 5 for installing reinforcement 10 on
6 is formed, and a reinforcement 10 is stretched between these seats 56, 56 by welding means.

The above-mentioned reinforcement 10 is shown in FIG.
As shown in FIGS. 4 and 8, a flat plate 57 and an uneven plate 58
This reinforcement 10 extends in the front-rear direction of the door body 1 and connects predetermined parts of the outer panel 7 as a closed-section structure forming front and rear closed sections 30 and 32. are doing.

The inner surface of the aforementioned outer panel 11 that covers the outer surface of the outer panel 7 is provided with reinforcements that protrude inward of the door as shown in FIGS. 3 and 8, corresponding to the upper and lower sides of the aforementioned uneven board 58. The ribs 59, 59 are integrally formed of synthetic resin.

These reinforcing ribs 59, 59 are located on the upper and lower surfaces of the aforementioned reinforcement 10, specifically, on the uneven plate 5.
When the outer panel 11 is attached to the outer surface of the outer panel 7, the upper and lower reinforcing ribs 59, 5
9 is engaged with the upper and lower surface portions of the reinforcement 10, so that the outer panel 11 is temporarily secured.

After the above-mentioned temporary storage, the above-mentioned outer panel 11 is integrally fixed to the outer surface of the outer panel 7 by adhesive means, but it may be fixed with screws at a plurality of locations as necessary.

Since at least the front and rear side edges of the door body 1 described above are formed into a skeleton structure with closed cross sections 30 and 32, the rigidity of the door body 1 itself can be improved.

Further, as shown in the embodiment, if the lower edge is formed to have a closed cross section 31 structure in addition to the closed cross sections 30 and 32 on the front and rear side edges, the strength of the lower edge of the door facing the side sill 42 is improved, and the side It is possible to prevent people from entering the door at times.

Furthermore, the above-mentioned inner panel 2 and outer panel 7 are formed by, for example, press-forming a rigid plate, and the window regulator 4, door hinges 5, 5, etc. as functional parts are attached to this inner panel 2, so that the mounting rigidity of the functional parts is increased. This has the effect of improving the

Furthermore, an opening 6 is formed in the center of the outer panel 7, and functional parts can be assembled from the outside of the vehicle to the inner panel 2 through this opening 6. This has the effect of improving installation workability.

Moreover, the outer panel 11 made of synthetic resin is adhesively fixed to the outer surface of the outer panel 7, and the outer panel 11 covers the opening, so that the appearance of the door body 1 is not impaired in any way.

It goes without saying that the inner surface of the inner panel 2 described above is lined with a door trim (not shown).

Moreover, the door hinge 5 is attached to the inner panel 2 as a closed section structure forming the above-mentioned closed section 30 via a hinge reinforcement 45, and this hinge reinforcement 45 is arranged to cross the above-mentioned closed section 30. Since it is fixed inside the closed cross-section structure, stress is not concentrated on the hemming portion 35 on the door hinge side, and the door rigidity can be improved.

In addition, the hinge reinforcement 4 mentioned above
It goes without saying that by providing the door 5, deformation of the door in the event of a collision can be reduced.

Further, since the relative movement between the inner panel 2 and the outer panel 7 can be prevented by the above-mentioned closed cross section 30 and the hinge reinforcement 45, cracking of the coating film on the hemming portion 35 due to this relative movement can be prevented. The rust prevention effect of this part is also improved.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is an external perspective view showing the structure of an automobile door, Fig. 2 is a perspective view of the door body with the outer panel removed, and Fig. 3 is a perspective view of the door body with the outer panel removed.
The figure is an exploded perspective view of the door body, FIG. 4 is a sectional view taken along the - line in FIG. 1, FIG. 5 is a sectional view taken along the - line in FIG. A sectional view, FIG. 7 is a sectional view taken along the - line in FIG. 6, and FIG.
The figure is a cross-sectional view taken along the - line in FIG. 1. 1...Door body, 2...Inner panel, 4...
...Window regulator, 5...Door hinge, 6
... opening, 7 ... outer panel, 11 ... outer panel, 23 ... periphery of opening, 30, 32 ... closed section, 45 ... hinge reinforcement.

Claims (1)

[Claims for Utility Model Registration] An automobile door structure comprising an inner panel to which functional parts are attached and an outer panel having an opening formed in the center, the front ends of the inner panel and the outer panel,
The lower end and the rear end are respectively joined by polymerization, and the peripheral edge of the opening of the outer panel is joined to the inner panel, so that at least the front and rear side edges of the door body are formed into a closed cross section, and the outer surface of the outer panel is made of synthetic resin. furthermore, a door hinge is attached to the front edge or the rear edge of the closed cross-section structure via a hinge reinforcement, and the hinge reinforcement is configured to cross the closed cross-section. Automotive door structure fixed within a closed section structure.