JPH0633176Y2 - Hinge pin for car door hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a hinge pin of a hinge for an automobile door.

[Technical background]

In the manufacturing process of automobiles, in the painting process, the painting process is performed before the interior process of the car, but in order to make the painting conditions the same, the doors to be painted are also temporarily attached to the car body and these painting work is done at the same time. There is a type of manufacturing process in which the door once installed is removed and the interior work is performed again when the work is completed.

Then, after that, the once removed door is permanently installed.

[Conventional technology]

Since the temporarily attached door is also painted at the same time as the vehicle body, the hinge part for temporary fixing is also painted in the same way as the door, and after the completion of the painting process, the hinge pin for temporary fixing used for the joining is pulled out, and the hinge itself. Is divided and the door and the car body are separated again.

As mentioned above, even the hinge is painted at the time of painting, therefore,
The paint is layered on both the hinge pin and the exposed part of the hinge member so that it cannot be removed from the hinge member. Therefore, the estimated thickness of the layer formed on the exposed part is first reduced to facilitate the removal work of the temporary hinge pin. The invention is a utility model application publication 1986
There is a technology published as No. 5508 of the year.

[Problems to be solved by the device]

In the above-mentioned conventional technology, the hinge pin of the disclosed technology is to be used as a temporary fixing hinge pin only for the coating process, and is formed by first reducing the thickness predicted for the layering of the paint. The reduced effective section is not enough for strength as a hinge pin of a door hinge as a finished vehicle, so it is a temporary fixing hinge pin only for the painting stage.

However, after the coating process is completed, the diameter of the part that has been reduced as described above is layered with the paint to form a diameter that is apparently equivalent to that of a normal hinge pin. The hinge pin is discarded.

On the other hand, the present invention makes it possible to use the hinge pin removed from the hinge part also for the final stop in the disassembly work of the vehicle body and the door after the painting process is finished, in other words, the final stop. The purpose is to make the hinge pin for use as a temporary fixing for painting.

[Means for Solving the Problems]

This invention is, as means for achieving the above-mentioned object,
In a single hinge pin that combines a hinge member to be mounted on the door side and a hinge member to be mounted on the pillar side, the intermediate exposure of the hinge pin that pivotally supports both hinge members to form a single hinge. In the portion, a toothed portion that forms an outer circumference is formed by axially providing a large number of sharp peaks and valleys having the same diameter position as the diameter of the large-diameter pivot portion as the apex.

[Action]

After the two hinge members are temporarily fixed with the hinge pin to form one door hinge, most of the exposed portions of the hinge pin in the painting process performed are the gear-like fitting portion and the tooth-shaped portion that are formed in the shape of a sharp point. , The paint does not adhere due to its shape. Occasionally, depending on the type of paint, even if it adheres, it is a very small amount, so the minute amount of paint that sticks to the edge of the bush opening of the pivot shaft and sticks off easily when the work is removed.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings. The hinge portion (3) can be attached to the front pillar by a plurality of bolts. The hinge member (3) is bent to form a pair of first connecting portions (5) and (5 ') and has a substantially U-shaped cross section. The first connecting parts (5), (5 ') have large and small first parts.
The hole (6) and the first small hole (6 ') are formed so as to face each other, and the first large hole (6) and the first small hole (6') are provided with hinge pins described later, respectively. Bushings (19) and (19 ') having fitable inner diameters are fitted. On the other hand, the hinge member (10) can be attached to the front door of an automobile with a plurality of bolts.
0) is bent to form a pair of second connecting portions (12), (12 '),
These have a shape which is spaced apart from and substantially parallel to each other and protrudes, and this portion has a substantially U-shaped cross section. A pair of second large holes (13) and second small holes (13 ') are formed in the second connecting portion (12), and these second small holes (13') face each other. The second connecting parts (12) and (12 ') are the first connecting parts.
The first connecting portions (5) and (5 ') are fitted to the outer surfaces of (5) and (5') via the flange portion of the bush (19) so as to sandwich them.
Reference numeral (14) is a hinge pin that is detachably attached to the bush (19) and the second hole (13). The hinge pin (14) is formed with a collar (21) at the base end thereof that abuts the outer surface of the second connecting portion (12), and the tip end of the hinge pin (14) is a snap ring (20) for retaining. Is detachably fitted. The hinge pin (14) is attached to the second connecting portion (1
Many gear-like fittings formed by axial peaks and troughs whose acute-angled apex has a diameter slightly smaller than the diameter of the second large hole (13) within the range of the plate thickness dimension of 2). The bushing of the first hole (6) from the end of the gear-like fitting part (23) to the plate thickness of the second connecting part (12) having the second hole (13). 19) has a diameter such that the pivot portion (16) having substantially the same size as the sum of the length and the second hole (13) and the first hole (6) can be rotated and the other is First
A small-diameter pivot shaft part (16 ') with a diameter that allows engagement and rotation at the small hole (6') and the second small hole (13 ') is provided, and the same diameter up to the tapered tip (15). In addition, up to the front position of the small diameter pivot (16 '), a large number of sharp peaks and troughs with the same diameter as the pivot (16) as the apex are provided in the axial direction to form the outer circumference. Hinge pin (14) to form tooth profile (22)
Make up. The hinge member (3), the hinge member (10) and the hinge pin (14) together constitute a vehicle door hinge (17).

〔effect〕

After finishing the painting process, hinge pins (14) from hinge members (3) and (10)
When removing, since the paint cannot be attached even on the exposed part of the hinge pin (14), the pulling operation can be facilitated, so that the collar that covers the hinge pin, which was conventionally required, from the attachment of the paint can be omitted, This is advantageous in that the manufacturing cost of parts and the number of man-hours for assembling work can be reduced.

[Brief description of drawings]

FIG. 1 is an overall front view of an automobile door hinge, FIG. 2 is a vertical cross-sectional view of a pivot portion, and FIG. 3 is a vertical cross-sectional view in the second illustration for explaining the structure of a hole for pulling out a hinge pin and inserting a pin. , Fig. 4 is a front view of the hinge pin, and Fig. 5 is Fig. 4A.
FIG. 6 is an enlarged cross-sectional view taken along the line A ′. (3), (10) ... Hinge member, (14) ... Hinge pin, (22) ... Tooth profile.

Claims (1)

[Scope of utility model registration request] 1. A single hinge pin that combines a hinge member to be mounted on a door side and a hinge member to be mounted on a pillar side, wherein both of the hinge members are pivotally supported to form a single hinge. In the exposed part in the middle of the hinge pin, a tooth profile part that forms the outer circumference is formed by axially providing a number of sharp peaks and valleys with the same diameter position as the diameter of the large diameter pivot part as the apex. Hinge pins for automobile door hinges.