JPS61211473A - Door hinge for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a door hinge for an automobile.

Conventional technology As is well known, an automatic heavy-duty door hinge has a door-side hinge that is connected to the hinge mounting surface of the door, and is rotatably connected to the door-side hinge via a hinge pin. and a vehicle body side hinge that is connected to the hinge mounting surface of the pillar that constitutes one side of the vehicle body. To explain this with reference to Fig. 4.5, reference numeral 1 denotes a door side hinge that is connected to the hinge mounting surface 12 of the door, and is formed in a substantially U-shape on the side. The brackets 4 and 5 to be bolted to the frame are bent outward at right angles. Reference numeral 6 denotes a vehicle body side hinge which is formed by bending bracket pieces 8 and 9 on the upper and lower edges of the tip of the base portion 7 and is connected to a hinge addition surface of a pillar (not shown) via the base portion 7. 6 is rotatably connected to the upper and lower walls 2.3 of the door-side hinge 1 by fitting the bracket pieces 8.9 onto the upper and lower walls 2.3 of the door-side hinge 1. A serration tOa is formed at one end of the hinge pin 1o, and the serration tOa is engaged with a pin insertion hole of the bracket piece 9 to be fixedly attached to the vehicle body side cover. Further, bushings 11 are interposed in the pin insertion holes of the upper and lower walls 2 and 3 of the door side hinge 1. It is necessary to set a required gap between the bushing 11 and the hinge pin 10 in order to ensure smooth rotation, and due to the existence of this gap, the hinge pin 10 of the door side hinge 1 is connected to the vehicle body side hinge 6. To prevent looseness in the radial and axial directions,
The serration 10a forming side end of the hinge pin 10 is caulked to close the flange 11 of the bushing 11! L is upper and lower wall 2,
3 and bracket pieces 8 and 9.

This similar structure is shown in, for example, Japanese Utility Model Publication No. 59-12365.

Inventive power 5 Problem to be solved The brackets 4 and 5 of the door hinge 1 are bent at right angles from the upper and lower walls 2.3, but due to molding errors, for example, the bracket 4 is bent as shown in FIG. opening angle α,
or bracket 4 as shown in Figure 7.
, 5 are formed perfectly perpendicular to the upper and lower walls 2.3, but if the hinge mounting surface 12 has an opening angle α relative to the bracket 4 due to a molding error of the door, for example,
In each case, attach the brackets 4 and 5 to the hinge mounting surface 12 with the bolt 1
3. When tightened, the opening degree α7. The wall on the side corresponding to α, for example, the upper wall 2 in the examples shown in FIGS. 7 flange 11 of the bushing 11 due to the inward bending deformation of the upper wall 2.
A gap δ is created between a and the bracket piece 8, and relative movement occurs between the vehicle body and the door when accelerating or decelerating or driving on rough roads, causing abnormal noise, or causing the door to rattle when opening and closing, resulting in quality problems. There was a problem that caused a loss of confidence and trust.

Therefore, even if there is some molding error in the opening direction of the door hinge bracket or the door hinge mounting surface, there is no gap between the door hinge and the vehicle body hinge, and the door can be attached to the vehicle body. To provide an automobile door hinge that can be properly assembled on the side.

Measures to solve the problem: The brackets at the upper and lower end of the door side hinge, which has a substantially U-shaped side surface and which is rotatably connected to the vehicle body side hinge by a hinge pin, are adjusted in advance to an appropriate closing angle with respect to the corresponding hinge mounting surface. It has a curved shape.

Function When the bracket of the door-side hinge is bolted to the hinge mounting surface, the upper and lower walls connected to the bracket tend to flex outward because the bracket is bent at a closing angle to the hinge mounting surface. , the degree of closeness between the bracket pieces of the vehicle body side hinge fitted externally on these upper and lower walls is increased.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same parts as in the conventional structure.

1 and 2, the brackets 4.5 are bent outward at the ends of the upper and lower walls 2, 3 of the door-side hinge 1, which has a substantially U-shaped side surface, and the vehicle body-side hinge 6 is attached to the upper and lower ends of the base portion 7. Attach the bracket pieces 8, 9 to the upper and lower walls 2,
3 and connect it rotatably with the hinge pin 10 via the bush 11, and swage the end of the hinge pin 10 on the side where the serration 10a is formed to connect the bush 11.
The basic structure is the same as that of the prior art, including the point that a is clamped between the upper and lower walls 2.degree. 3 and the bracket pieces 8 and 9. Here, the brackets 4 and 5 of the door side hinge 1 are set in advance at an appropriate closing angle β with respect to the hinge mounting surface 12 of the corresponding door.
It is bent and formed.

According to the above embodiment structure, when the door side hinge 1 and its brackets 4 and 5 are fastened with the bolts 13 to the hinge mounting surface 12 of the corresponding door, the brackets 4 and 5 are attached to the hinge mounting surface 12.
2, the upper and lower walls 2 and 3 tend to bend outward, and as a result, this bending force is applied to the upper and lower walls 2 and 3 and the vehicle body side hinge. This acts as a force that further clamps the flange 11a of the bushing 11 between the flange 11a and the bracket piece 8.9 of the bushing 11. Therefore, even if there is some error in the opening direction of the brackets 4 and 5 during molding, or even if the hinge mounting surface 12 is slightly inclined in the opening direction due to a molding error in the door, the door side hinge 1 and the vehicle body side hinge 6 [Hinge pin] There is no gap in the O-connection part, and the door can be properly attached to the vehicle body.

Here, since the upper and lower walls 2 and 3 of the door side hinge 1 are bent and deformed outward when the ports 13 of the brackets 4 and 5 are fastened as described above, they are formed to be slightly inclined inward as shown in FIG. For installation on the door side, in the previous state, the flange 111L of the bushing 11 is attached to the bracket pieces 8, 9 of the vehicle body side hinge 6.
It is also possible to set K so that the contact is biased toward . In this case, the uneven contact of the flange 11 a with the bracket pieces 8 and 9 reduces the rotational tension of the door hinge 1 with respect to the vehicle body hinge 6, making it easier to attach the door hinge 1 to the hinge spray surface 12. It has the advantage of being able to

Effects of the Invention As described above, according to the present invention, the door side hinge can apply an outward bending force to the upper and lower walls when fastened to the door, so that the brackets at the ends of the upper and lower walls are slightly opened during molding. Even if there is an error in the direction, or there is a molding error in the direction in which the hinge is installed, the outward bending deformation of the upper and lower walls will cause the flange of the bushing to connect with the upper and lower walls and the bracket piece of the hinge on the vehicle body. This allows the door to be properly assembled on the vehicle body side without creating a gap between these door side hinges and the vehicle body side hinge, and prevents the door connecting part from rattling. This has a great practical effect in that it does not produce unpleasant squeaks or the like and can further improve quality and reliability.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the present invention, FIG. 2 is a side view showing the same embodiment assembled to a door, FIG. 3 is a side view showing a different example of the present invention, and FIG. FIG. 5 is a perspective view showing a conventional door hinge, FIG. 5 is a cross-sectional view of a hinge pin connecting portion, and FIGS. 6 and 7 are explanatory diagrams showing the installation process of the conventional door hinge. 1...Door side hinge, 2...Upper wall, 3...Lower wall,
4゜5...Bracket, 6...Vehicle side hinge, 7.
...Base part, 8, 9...Bracket piece, 10...
Hinge pin, 11 Figure 3 Figure 6 Figure 7

Claims (1)

[Claims] (1) Brackets are bent outward at the ends of the upper and lower walls, and the door side hinge is connected to the hinge mounting surface of the door through the brackets, and the door side hinge has a substantially U-shape on the side, and the upper and lower edges of the tip of the base part. A vehicle body in which a bracket piece is bent and formed, the bracket piece is fitted onto the upper and lower walls of the door side hinge, and is rotatably connected via a bush by a hinge pin, and is coupled to the vehicle body side via a base portion. 1. A door hinge for an automobile comprising a side hinge, characterized in that the brackets at the ends of the upper and lower walls of the door side hinge are bent in advance to have an appropriate closing angle with respect to the corresponding hinge mounting surface.