JPH0776971A - Structure of door hinge for automobile - Google Patents

Abstract

PURPOSE:To reduce weight and improve function by providing a vertical pair of link arms and an intermediate link arm consisting of plate metal material between a car body and a door, and providing a door open position holding part on the intermediate link arm. CONSTITUTION:When a door 3 is rotated, the vicinity of the door side hinge connecting part is displaced in such a manner as to be slide from the outer surface 2a of a car body to the outside because of a four-joint rotating link mechanism, and the getting-on and off in a narrow place is facilitated. Since first link arms 4a, 4b and a second link arm 5 are formed of plate metals having vertical widths, the car width directional dimension is minimized, and the door supporting rigidity is enhanced. When the door 3 is then rotated, the door 3 is held with a click feeling in the position where a roller part 15 formed by curving the base end part of the link 5 is fitted to a recessed part 19 provided on a leaf spring 18. Further, the link 5 makes contact with the ear piece 20a of a stopper to regulate the excessive opening of the door 3. Thus, such as hinge can be manufactured in an extremely compact form with a light weight, and opening and closing function can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door hinge structure.

[0002]

2. Description of the Related Art An automobile door is attached to a door opening of a vehicle body through a door hinge so as to be openable and closable.

Since the door hinge is frequently used and it is necessary to rotatably support a heavy door, a high durability performance is required. In addition, for convenience of getting on and off in a narrow place, it is necessary to provide a door hold mechanism that locks the door at the intermediate open position with a feeling of moderation and a door stopper mechanism that restricts the fully open position of the door.

In order to easily get on and off in a narrow place, for example, as described in Japanese Utility Model Laid-Open No. 1-83889, a door hinge is provided with a four-bar rotary link mechanism having two link arms. It has been proposed that the door is opened by sliding the hinge joint portion on the door side to the outside.

In the door hinge having the above structure, the door-side joint portion of the hinge is slid outward to open the door, and even in a narrow place where the door can be opened only slightly, the space between the vehicle body and the door is small. Can be extended. Therefore, it is possible to easily get on and off. In particular, in a two-door vehicle having a door length larger than that of a four-door vehicle, it is very convenient because a boarding / alighting space can be secured even if the opening angle of the door becomes small.

[0006]

A door hinge supports a door such that it can be opened and closed with respect to a vehicle body, and holds the door at a predetermined rotation position.
It is necessary to provide a stopper mechanism that restricts the door from opening beyond the maximum opening position.

However, if the door hinge provided with the four-bar rotary link mechanism in which the entire door is largely displaced outward as described above is adopted, the opening stroke of the door becomes large. Therefore, if a conventional door hold mechanism or the like is adopted, a large space must be secured. Therefore, a door hold mechanism or the like is often provided separately from the link arm that supports the weight of the door. As a result, there is a problem that the structure of the door hinge becomes complicated and the weight also increases.

Further, as the opening stroke of the door increases, the length of the link arm provided between the door and the vehicle body also increases. Therefore, in order to support the weight of the door, it is necessary to manufacture the link arm and the bracket for pivotally attaching the end of the link arm with high strength. Therefore, it is difficult to configure the hinge that can open and close the door with high accuracy using only the sheet metal material.

The present invention has been devised under the above circumstances, solves the above-mentioned problems of the prior art, and is extremely lightweight and compact in construction.
An object of the present invention is to provide a structure of a vehicle door hinge that incorporates a door hold mechanism and a door stopper mechanism.

[0010]

In order to solve the above problems, the present invention takes the following technical means.

That is, according to the present invention, between the vehicle body and the door, a pair of first link arms are arranged at a predetermined interval in the vertical direction, and the first link arms are arranged in the intermediate portion in the vertical direction. And a second link arm that is configured to displace the door-side hinge joint portion to the outside when the door is opened, wherein the first link arm and the second link arm have a predetermined structure. While being formed from a sheet metal material having a vertical width of
A roller portion formed by bending an end portion of the second link arm into an arc shape around the vehicle body side pivotal axis or the door side pivotal axis of the second link arm and the roller portion elastically slide. And a leaf spring member capable of holding the door in a predetermined opening position.

[0012]

The door hinge for a vehicle according to the present invention has a pair of first link arms which are vertically spaced apart from each other by a predetermined distance, and a second link arm which is disposed between the first link arms. And a link arm. By supporting the door via these two link arms, the door-side hinge joint portion is displaced outward when the door is opened.

These link arms are formed of a sheet metal material having a predetermined vertical width. By forming the link arm from a sheet metal material, it is possible to reduce the weight. Moreover, since the first and second link arms are formed so as to have a vertical width, the supporting rigidity is high, and the door can be opened and closed reliably and accurately even though it is made of a sheet metal material. Can be moved.

Further, in the structure of the door hinge according to the present invention, the door hold mechanism is constituted by providing the roller portion and the leaf spring member around the pivot shaft of the second link arm.

In the door hold mechanism, the end portion of the second link arm is bent in an arc shape around the vehicle body side pivot shaft or the door side pivot shaft to form a roller portion. Alternatively, it is configured by slidingly contacting a leaf spring member supported by a door side bracket or the like. When the door is opened, the roller portion is slid while elastically contacting the leaf spring member. Therefore, the link arms can be locked in stages by providing the leaf spring member with irregularities. As a result, the door can be held at the predetermined opening position with a feeling of moderation.

Further, the door hold mechanism according to the present invention is constructed by using the second link arm formed of sheet metal and the bracket pivotally supporting the link arm, and the entire door hinge including the door hold mechanism. Can be formed from sheet metal material. Therefore, the door hinge that employs the four-bar rotation link mechanism can be manufactured to be much more compact and lighter than the conventional one.

Moreover, since the second link arm itself, which constitutes the door hold mechanism, can support the weight of the door, the burden of supporting the weight of the door on the first link arm is not concentrated, and the structure is enlarged. It is neither complicated nor complicated.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a vehicle door hinge according to the present invention will be specifically described below with reference to the drawings.

As shown in FIGS. 1 and 2, the door hinge 1 according to the present embodiment is provided with a pair of upper and lower parts which are vertically arranged at a predetermined interval between the vehicle body 2 and the door 3. The first link arms 4a, 4b and the second link arm 5 arranged in the middle of the first link arms 4a, 4b are provided with three link arms.

The link arms are pivotally attached to the vehicle body and the door via brackets 6a, 6b, 7 joined to the vehicle body side and brackets 8a, 8b, 9 joined to the door side. .

As shown in FIG. 2, the first link arms 4a and 4b and the second link arm 5 have a combination of arcs so as to avoid interference with the vehicle body opening edge and the door side edge when the door is opened. It has a curved shape.

The bracket 6a on the vehicle body side according to this embodiment,
6b, 7 and the brackets 8a, 8b, 9 on the door side,
The base plates 10 and 11 extending in the vertical direction are integrally joined. Therefore, the base plate 1
The door 3 is supported so as to be openable / closable with respect to the vehicle body by joining 0 and 11 to the vehicle body side opening edge portion and the door side edge portion, respectively.

As shown in FIG. 2, the vehicle body side pivot shaft 21 of the first link arms 4a and 4b, the vehicle body side pivot shaft 22 of the second link arm 5, and the first link arms 4a and 4a.
The door-side pivot shaft 23 of b and the door-side pivot shaft 24 of the second link arm 5 are provided so as to be displaced by a predetermined amount in the vehicle width direction. Therefore, the first link arm,
The second link arm, the portion between the vehicle body side pivot shafts 21 and 22, and the portion between the door side pivot shafts 23 and 24 constitute a four-bar rotary link mechanism.

When the door 3 is opened by adopting the four-bar rotary link mechanism, the vicinity of the hinge joint on the door side slides outward from the general outer surface 2a of the vehicle body as shown in FIG. Is displaced. Therefore, even in a narrow place where the door can be opened only slightly, it is possible to expand the space between the vehicle body and the door, and it is possible to easily get on and off.

In the door hinge 1 according to this embodiment, each link arm 4a, 4b, 5 is formed of a sheet metal material having a predetermined vertical width. For this reason,
As is clear from the above, the dimension of the door hinge 1 in the vehicle width direction can be kept small. On the other hand, since each link arm has a vertical width, the support rigidity of the door is large, and the vehicle door can be opened and closed with high accuracy while reliably supporting the door.

In this embodiment, the vehicle body side brackets 6a, 6b, 7 and the door side brackets 8a, 8 are also provided.
b and 9 are base plates 10 and 11 extending in the vertical direction.
Are integrally joined to each other. Therefore, in order to mount the door hinge 1, the base plates 10, 1
It suffices to join 1 to the vehicle body and the door, and the assembling work can be performed very easily, and the mounting accuracy of each link arm and the bracket can be greatly improved. Also, the mounting strength of each bracket is significantly improved.

Further, around the vehicle body side pivot shaft 22 of the second link arm 5 according to the present embodiment, the door hold mechanism 12 capable of holding the door in a predetermined pivot position, and the maximum open position of the door. A door stopper mechanism 20 that is locked by is provided.

The door hold mechanism 12 is a pivot shaft 2 supported by the side walls 13, 13 of the bracket 7 in a spanning manner.
The roller portion 15 is provided on the outer peripheral portion of the cylindrical mounting member 14 to be fitted over the second mounting member 14, and is formed by bending and joining the base end portion of the second link arm 5 into a substantially U shape. The front wall portion 16 of the bracket 7 or the leaf spring member 18 provided along the surface of the base member 10 is provided.

One end of the leaf spring member 18 is connected to the front wall portion 16 of the bracket 7 with a bolt 30 and a nut 31, and extends substantially arcuately toward the surface of the base member 10. The roller portion 15 is configured to be able to slide while elastically abutting. Further, a concave portion 19 capable of holding the door 3 at a predetermined rotating position is provided in an intermediate portion of the leaf spring member 18. Therefore, when the door 3 is rotated, the door 3 is held with a feeling of moderation at the position where the roller portion 15 is fitted in the recess 19.

In the door stopper mechanism 20, the second link arm 5 is brought into contact with the rear edges of the side walls 13, 13 of the bracket 7, and the ear piece 20a for restricting the maximum opening position of the door, 20a is provided. The ear pieces 20a, 20a are formed in a protruding manner so as to face each other with an interval narrower than the vertical width of the second link arm 5. Therefore, the opening movement of the door is restricted at the position where the second link arm 5 is in contact with the ear pieces 20a, 20a, so that the door is not excessively opened.

By the door hold mechanism 12 and the door stopper mechanism 20, the door can be held at the intermediate pivot position with a moderation sensation, and at the maximum pivot position, the door can be restrained from opening too much. .

The door hold mechanism 12 according to the present embodiment.
Since the door stopper mechanism 20 is configured by using the second link arm and the bracket 7 that rotatably supports the second link arm, no special member is separately required. Moreover, all are made of sheet metal. Therefore, the door hold mechanism 12 and the door stopper mechanism 20 can be configured in a very small space. Moreover, the weight does not increase. Further, since the coil spring and other members are not required, the number of parts does not increase and the manufacturing cost can be significantly reduced.

The present invention is not limited to the above embodiment. In the embodiment, the first link arms 4a, 4
b for supporting the second link arm 5 and the bracket 6a, 6b ...
However, the present invention can be applied to the structure of the door hinge that does not include the base plate.

Also, the shape of each link arm is not limited to the embodiment, and can be changed according to the thickness or shape of the door and the vehicle body.

Further, the pivoting position and the displacement amount of each link arm are not limited to those in the embodiment.

Further, the shapes of the leaf spring member and the roller portion are not limited to those in the embodiment, and a feeling of moderation can be obtained at the opening positions of two or more steps before the door is rotated to the maximum rotation position. You may comprise so that it can hold | maintain.

Although the door hold mechanism 12 and the door stopper mechanism are provided around the vehicle body side pivot shaft 22 of the second link arm in the embodiment, they may be provided around the door pivot shaft 24. .

[Brief description of drawings]

FIG. 1 is an overall perspective view of the structure of an automobile door hinge according to the present invention.

FIG. 2 is a schematic view of the door hinge as viewed from the direction of the line II-II in FIG. 1 (the lower side of the door), illustrating the movement of the door hinge according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 1 Door Hinge 2 Vehicle Body 3 Door 4 First Link Arm 5 Second Link Arm 15 Roller Part 18 Leaf Spring Member 22 Pivot Shaft of Second Link Arm on Vehicle Body Side

Claims (1)

[Claims] 1. A pair of first link arms arranged at predetermined intervals in a vertical direction between a vehicle body and a door, and a second link provided in an intermediate portion in the vertical direction of the first link arms. A structure of a door hinge for an automobile, comprising a link arm, and displacing a door-side hinge joint portion outward when a door is opened, wherein the first link arm and the second link arm have a predetermined vertical width. And a roller formed by bending the end portion of the second link arm in an arc shape around the vehicle body side pivotal axis or the door side pivotal axis of the second link arm. And a leaf spring member capable of elastically contacting the roller portion and holding the door in a predetermined opening position, the structure of a door hinge for an automobile.