JPS6234816Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a door hinge mounting structure for an automobile, and in particular, a door hinge is attached to a door hinge by passing through a through hole in a hinge retainer welded to the back of the door inner panel. The present invention relates to an improvement in an automobile door hinge mounting structure in which the door hinge is mounted to the door inner panel using a bolt that is screwed into a nut.

Conventionally, as shown in FIGS. 1 to 3, a door hinge 1 is passed through a through hole 4 of a hinge retainer 3 welded to the back surface of a door inner panel 2A of a door 2, and then welded to the hinge retainer 3. There is an automobile door hinge mounting structure in which the door hinge is mounted to the door inner panel 2A with a bolt 6 screwed into a welding nut 5.

Reference numeral 7 in the figure denotes a hinge pin, 8A and 8B denote reference holes formed in the door inner panel 2A and the hinge retainer 3, respectively, to determine the positions of both when welding the hinge retainer 3 to the back surface of the door inner panel 2A; 1 and 2 show welding points of the door inner panel 2A and the hinge retainer 3 by spot welding, respectively.

In the conventional door hinge mounting structure as described above, the rigidity of the mounting part is reinforced using a thick plate hinge retainer 3, but the vibration of the door when driving a car, especially when driving on a rough road, is caused by the vibration. However, there has been a problem in that the vibrations of the steering wheel, instrument panel, etc. transmitted through the pillar portion may cause discomfort to the occupants inside the vehicle. In addition, due to many years of opening and closing automobile doors,
There was also a problem in that the hinge mounting portion was bent, causing the free end of the door to move downward, which was called door descent.

On the other hand, increasing the plate thickness of the hinge retainer 3, increasing its vertical or lateral dimensions, and further increasing the number of welding points of the hinge retainer 3 to the door inner panel 2A. can also be considered.

However, although increasing the thickness of the hinge retainer increases the rigidity of the hinge retainer itself and suppresses deformation, it does not prevent the door inner panel to which the hinge retainer is attached from deforming. Therefore, it is impossible to prevent the so-called door from sliding down due to long-term opening and closing operations of the door.

In addition, increasing the size of the hinge retainer can strengthen the rigidity of the door inner panel, but it does not increase the rigidity of the hinge retainer itself, and therefore there is a problem that deformation of the hinge retainer cannot be suppressed. be.

Furthermore, although increasing the number of welding points of the hinge retainer to the door inner panel strengthens the bond between the two, it does not suppress the bending of the door inner panel or the deformation of the hinge retainer itself.

This idea was made in view of the above-mentioned conventional problems, and it suppresses the vibration of the door and also
An object of the present invention is to provide an automobile door hinge mounting structure that can prevent the door from falling down.

In this invention, a door hinge is attached to the door inner panel by a bolt that passes through a through hole in a hinge retainer welded to the back surface of the door inner panel and is screwed into a welding nut welded to the hinge retainer. In the automobile door hinge mounting structure, the upper end of the lower hinge retainer disposed near the lower end of the door inner panel extends upward, and the lower end of the upper hinge retainer disposed near the upper end of the door inner panel extends downward. to form an extension part, and integrally and continuously provide flanges that rise in the thickness direction of the door inner panel on both left and right sides and the bottom side of the lower hinge retainer, and on both left and right sides and the top side of the upper hinge retainer. The above object is achieved by welding the hinge retainer to the door inner panel at the extension portion and at least one other point in each of the upper and lower hinge retainers.

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the same or corresponding parts as those of the conventional door hinge mounting structure shown in FIGS. 1 to 3 are given the same reference numerals, and the explanation thereof will be omitted.

In this embodiment, as shown in FIGS. 4 to 7, the door hinge 1 is welded to the hinge retainer 13 by passing through the through hole 4 of the hinge retainer 13 welded to the back surface of the door inner panel 2A. With the bolt 6 screwed into the welding nut 5,
In the automobile door hinge mounting structure attached to the door inner panel 2A, flanges 10 rising in the thickness direction of the door inner panel 2A are integrally and continuously formed on both left and right sides and the upper or lower side of the hinge retainer 13. It is something.

That is, as shown in FIG. 7, the lower hinge retainer 13A is located near the lower end of the door inner panel 2A, and the lower hinge retainer 13A is located on both left and right sides and the bottom edge of the lower hinge retainer 13A, which is located near the lower end of the door inner panel 2A. Flanges 10 rising in the thickness direction of the door inner panel are formed on both left and right sides and the upper side of the hinge retainer 13B excluding the lower end.

The upper end of the lower hinge retainer 13A disposed near the lower end of the door inner panel 2A extends upward, and the lower end of the upper hinge retainer 13B disposed near the upper end of the door inner panel 2A extends downward. Hinge retainer 1
3A and 13B are spot welded to the back surface of the door inner panel 2A at a point between the extension parts 11A and 11B and the pair of upper and lower welding nuts 5. The lower end of the lower hinge retainer 13A and the upper hinge retainer 1
The upper ends of 3B each have a substantially semicircular planar shape in plan view.

Further, the lower end of the hinge retainer 13A and the upper end of the hinge retainer 13B are arranged as close as possible to the vicinity of the joint between the door inner panel 2A and the door outer panel 2B.

In this embodiment, the cross-sectional rigidity of the hinge retainer 13 is greatly increased by the flange 10, and one end of the hinge retainer 13 is placed as close as possible to the vicinity of the joint between the upper and lower ends of the door inner panel 2A and the door outer panel 2B. The door hinge mounting part is fixed to a highly rigid part near the joint between the door inner panel 2A and the door outer panel 2B through bolts 6 and welding nuts 5 at the close location. can also be significantly increased. Moreover, the span between the upper and lower door hinges 1 can also be increased.

Further, since the extension parts 11A and 11B extend outward from the contact surface with the hinge 1 and are welded to the door inner panel 2A at this position, the extension parts 11A and 11B extend outward from the contact surface with the hinge 1, and are welded to the door inner panel 2A at this position. The movement can be suppressed, and as shown by the two-dot chain line, peeling of the door inner panel 2A can be prevented and surface rigidity can be increased.

Therefore, it is possible to suppress the effects of vibration of the door while the vehicle is running and the occurrence of so-called door sliding due to long-standing door opening/closing operations.

Further, as in the above embodiment, the hinge retainer 13
Flange 10 except for the upper or lower sides of A and 13B
In the case of forming the flange 10 from the punched plate material 14, as shown in FIGS. 9a to 9c, there is an advantage that productivity is high.

In the above embodiment, the number of welding points 9 by spot welding is two in the vertical direction, but the number may be three or more, for example.
However, as shown in the above embodiment, it is most efficient to have two welding points 9 in the upper and lower directions.

Since the present invention is constructed as described above, not only the rigidity of the hinge retainer itself but also the rigidity of the door inner panel side is greatly increased. This has an excellent effect of suppressing the occurrence of so-called door sliding due to operation.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional automobile door hinge mounting structure, Fig. 2 is an enlarged sectional view showing the conventional door hinge mounting structure, and Fig. 3 is a perspective view showing a hinge retainer in the door hinge mounting structure. , FIG. 4 is a sectional view similar to FIG. 2 showing an embodiment of the automobile door hinge mounting structure according to the present invention, FIG. 5 is a perspective view showing a hinge retainer in the same embodiment, and FIG. 6 is a diagram similar to FIG. A cross-sectional view along the - line of
Fig. 7 is a perspective view showing the door inner panel with the hinge retainer attached in the same embodiment, Fig. 8 is a sectional view showing the operation of the same embodiment, and Fig. 9 shows the manufacturing process of the hinge retainer in the same embodiment. FIG. 1...Door hinge, 2...Door, 2A...Door inner panel, 4...Through hole, 5...Welding nut, 6...Bolt, 9...Welding point, 10
...Flange, 11A, 11B...Extension part, 1
3, 13A, 13B... Hinge retainer.

Claims (1)

[Claims for Utility Model Registration] (1) The above-mentioned method is implemented by a bolt that passes through a through hole of a hinge retainer welded to the back of the door inner panel and is screwed into a welding nut welded to the hinge retainer. In an automobile door hinge mounting structure that is mounted to a door inner panel, the upper end of a lower hinge retainer arranged near the lower end of the door inner panel is directed upward, and the lower end of an upper hinge retainer arranged near the upper end of the door inner panel is are extended downward to form extension portions, and on both left and right sides and the bottom side of the lower hinge retainer, and on both left and right sides and the top side of the upper hinge retainer in the thickness direction of the door inner panel. A door hinge mounting structure for an automobile, characterized in that a rising flange is integrally and continuously formed, and the hinge retainer is welded to the door inner panel at the extension portion and at least one other point on each of the upper and lower hinge retainers. . (2) The automobile door hinge mounting structure according to claim 1, wherein the planar shape of the lower end of the lower hinge retainer and the upper end of the upper hinge retainer is approximately arcuate.