JPS6022196Y2 - automotive door hinge - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a highly rigid automobile door hinge, which is a sheet metal product.

In order to reduce the weight and cost of automobiles, as well as to save energy, door hinges are now generally made of sheet metal instead of casting.

This is because it can be easily mass-produced by press molding.

However, unlike cast door hinges, sheet metal door hinges cannot be increased in rigidity by increasing the thickness of the main parts, so they tend to lack rigidity.

Furthermore, although door hinges usually have a door stopper function, the structure of the stopper is complicated.

In order to solve these problems to some extent, for example, as shown in Japanese Patent Publication No. 52-1771, one side of the hinge member is made into a groove-shaped cross section with a flange at the end.
There is a door hinge in which a hinge pin is inserted through a groove-shaped side wall and the end surface of the groove-shaped bottom wall is brought into contact with a counterpart hinge member to serve as a stopper, and the flange is fixed to the door.

However, the load of the weight of the door is applied to the groove-shaped side wall surface, which is not desirable in terms of rigidity.Also, although the end surface is used for the stopper, it is difficult to achieve machining accuracy due to the structure, and it does not hit the entire surface, so the stop load becomes an uneven load. Therefore, there was a risk that the strength would be strained.

The present invention solves the above problems and provides a highly rigid, lightweight, and functional door hinge.

The present invention will be explained below with reference to embodiments shown in the drawings.

As shown in FIGS. 1 to 3, the door hinge according to the present invention has a fixed hinge member 1 and a movable hinge member 2 rotatably connected by a hinge pin 3, and the fixed hinge member 1 is L-shaped as a whole. One side of the base material 11 is the attachment part 1 to the vehicle body side.
It becomes 2.

Flanges 13.13 are erected on both sides of the base material 11 to reinforce the mounting portion 12, and holes 14. 14
is drilled to allow the hinge pin 3 to be inserted and held therein.

At the tip of the flange 13.13, projections 15, 15 are cut out and form part of a stop facing in the direction of rotation.

The movable hinge member 2 has a curled portion 21 formed by winding a plate.
and a support portion 22 of the curl portion 21.
extends in the tangential direction of the curled portion 21, and the curled portion 21 has an insertion hole 23 for the hinge pin 3 in the center and a flange 13.
It has a width that is approximately the same as the distance between the inner surfaces of the flanges 13 and 13, and is positioned between the flanges 13 and 13.

End surfaces 24, 24 on both side edges of the support portion 22 are provided with protrusions 15, 1.
5 and a stop portion facing in the tangential direction of the curl portion 21 that can come into contact with the door when the door is fully closed.

Note that the strength of the curled tip of the curled portion 21 is particularly improved if it is fixed to the support portion by welding or the like.

The support portion 22 also serves as an attachment portion to the door 4.

The operation of the door hinge having the above configuration is shown in Figures 3 and 4.
This will be explained with a diagram.

The mounting portion 12 of the fixed hinge member 1 is fixed to a pillar on the vehicle body side, and the movable hinge member is fixed to the front end of the inner plate on the door 4 side.The door 4 rotates clockwise in the figure.

The weight of the door 4 is borne by the end face of the curled portion 21 and the inner surface of the flange 13.

In FIG. 3 when the door 4 is in the closed state, the end surface 24 and the protrusion 1
4 is positioned at a predetermined opening angle around the rotation axis, and when the door 4 is opened, the lower door 4 rotates by this opening angle, and the protrusion 15 comes into contact with the end surface 24 and the door stopper function is activated. do.

According to the door hinge according to the present invention, the rotation shaft of the movable hinge member 2 is supported by the curled portion 21, so that unlike a flat plate, the rigidity is significantly improved.

Since the protrusion 15.15 on a part of the stopper can be machined at the same time as drilling the hole 14.14, the accuracy is high, and the stopper will not hit unevenly and cause an unbalanced load.

Having the support part 22 of the curl part 21 as the attachment part to the door 4 is advantageous because the impact load of the door stop can be directly transmitted and borne by the door 4, and the distance from the pivot axis is small. This results in a reliable door hinge that does not deform under bending loads and has a good response.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a perspective view of the door hinge, Fig. 2 is an exploded perspective view, Fig. 3 is a plan view of the installed state when the door is closed, and Fig. 4 is a similar view when the door is opened. It is a top view of a state. DESCRIPTION OF SYMBOLS 1... Fixed hinge member, 12... Mounting part, 13... Flange, 2... Movable hinge member, 21... Curled part. .

Claims (1)

[Scope of utility model registration request] In a sheet metal door hinge in which a fixed hinge member fixed to the vehicle body side of the automobile and a movable hinge member fixed to the door side are rotatably connected by a hinge pin, the fixed hinge member is connected to the mounting part and the movable hinge member fixed to the door side. The movable hinge member is provided with a pair of flanges perpendicular to the rotational axis and a stopper portion formed at the tip of the flange in the direction of the rotational force, and the movable hinge member is provided with the fixed hinge member. a curled portion sandwiched between the pair of flanges; a support portion extending in the tangential direction of the curled portion and fixed to the door; a hole cut in the pair of flanges provided on the fixed hinge member and a hole in the center of the curled portion; An automobile door hinge that is opened by inserting a hinge pin through it.