JPS5836765Y2 - automotive door hinge - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door hinge for an automobile that allows a wide boarding and alighting space to be obtained at the initial stage when the door is opened.

In conventional door hinges, the hinge center is fixed, and the first
As shown in door A shown by the solid line in the figure, the space for boarding and alighting when the door is open is proportional to the degree of door opening, so door A must be opened wide to obtain the necessary space for boarding and alighting.
The tip A1 of the door A widens widely in the vehicle width direction, which is dangerous on roads with heavy traffic, and also uncomfortable when the door A can only be opened a little in a narrow parking space.

In addition, if the door window glass has a large curvature and the top of the door A falls inward, it will not only be more cramped, but it may even be dangerous to hit your face or head against the top of the door A. be.

The present invention was developed in view of the above problems, and the hinge center of the door hinge changes as the door opens and closes, so that the base end of the door primarily moves outwards at the beginning of the door opening. To provide a door hinge for an automobile that allows the necessary space for getting in and out of the door without opening the tip of the door wide.

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 2 and 3, a door A is attached to a vehicle body B via a door hinge 1. As shown in FIGS.

On the side of the vehicle body B, the door hinge 1 is fixed to a mounting surface B1 by a vehicle body bracket 2 having substantially horizontal opposed flanges 21, 21 facing toward the rear of the vehicle.

A proximal end 31 of the first link member 3 is pivotally attached to the vehicle body bracket 2 via a shaft pin 32 while being sandwiched between flanges 21.21.

A base end 41 of a second link member 4 is pivotally attached to the vehicle body bracket 2 outwardly in the vehicle width direction in addition to a base end 31 of the first link member 3, and a connecting pin provided at a distal end 42 of the base end 41 of the second link member 4 is pivotally attached to the vehicle body bracket 2. 43, it is slidably and rotatably connected to an engagement elongated hole 33 provided in the intermediate portion of the first link member 3 and extending in the longitudinal direction.

One end of the third link member 5 is rotatably connected to the tip 34 of the first link member 3 via a shaft pin 51, and the other end is fixed to the door A side and has a flange 61, 61 erected. It is pivotally attached to a door bracket 6 via a door pivot 62.

The connection pin 43 of the second link member 4 has a fourth link member 7.
One end is connected and extended to the other end, where it is pivotally connected to the middle part of the third link member 5 via a pivot shaft 71, and the other end 72 has a circular shape concentrically with the pivot shaft 71. An arc-shaped first stopper surface 73 is formed, and when the door is opened, within the set door opening degree, the door A slides into contact with the first sliding surface 63 provided corresponding to the flange 61 of the door bracket 6. Rotation about the door pivot 62 is restrained, and when the opening degree of the door exceeds a set value, the door A is set so as to come off the first sliding surface 63 and allow the door A to freely rotate about the door pivot 62.

Further, a second stopper surface 74 formed on the other end 72 of the fourth link member 7 and continuous with the first sliding surface 73 is formed on the flange 61 of the door bracket 6 and is connected to the first sliding surface 63. Continuously slides into contact with a second sliding contact surface 64 formed in an arc shape concentrically with the door pivot 62 at the door opening degree or more, and a fourth
The link member 7 is set so that rotation about the pivot shaft 71 is restricted.

Note that the second link member 4, the third link member 5, and the fourth link member 7 are each configured to sandwich the first link member 3.

Next, the operation will be explained with reference to FIG.

In the figure, when door A is opened counterclockwise from the solid line position where door A is fully closed, even if door A tries to rotate around the door pivot 62 of door bracket 6, the first sliding contact Since the surface 63 is in sliding contact with the first stopper surface 73 and the sliding direction does not match the rotation direction of the door A, the door A cannot rotate around the door pivot 62. .

Therefore, the door A rotates approximately around the shaft pin 32 at the base end 31 of the first link member 3, but as the door A rotates counterclockwise, the first link member 3 The shaft also rotates counterclockwise around the shaft pin 32, and as a result,
The tip 42 of the second non-knock member 4 is pushed through the connecting pin 43 and rotates counterclockwise.

The connecting pin 43 is connected to the retaining elongated hole 33 of the first link member 3, and is located at the proximal end of the engaging elongated hole 33 when the door A is fully closed, and slides toward the distal end as the door A opens. Moving.

One end of the fourth link member 7 is connected to the connecting pin 43,
Since the other end side of the fourth link member 7 is pivotally connected to the intermediate portion of the third link member 5 via the pivot shaft 71, the first link member 3, the third link member 5, and the fourth link member 7 In the relationship between is rotated clockwise relative to the first link member 3.

The third link member 5 and the door A are connected together because the first sliding surface 63 is in contact with the first stopper surface 73, so the door A is fixed by the angle caused by this rotation. 32
It is returned in the opposite direction from the rotation angle around .

That is, at the initial stage when the door is opened, the door A rotates only by an angle that is the rotation angle of the first link member 3 minus the relative rotation angle of the third link member 5 to the first link member 3. Therefore, the initial opening angle of door A is extremely small, and door A
The deflection of the tip A1 is also small.

On the other hand, at the base end A2 of the door A, as the door A opens, the angle between the first link member 3 and the third link member 5 increases, and the two links are connected to each other by the shaft pin 51, which is close to a straight line.
As shown by the dashed line in FIG. 1, it is moved significantly outward from the vehicle body, and the space for getting in and out near the base end A2 becomes larger.

As the door A opens, the first stopper surface 73 and the first sliding surface 63 slide against each other, and when the door A opens to the preset position indicated by the two-dot chain line in FIG. The sliding contact between the stopper surface 73 and the first sliding contact surface 63 is removed.

Therefore, the door A can rotate around the door pivot 62.

When the door A is rotated in this manner, the second stopper surface 74 and the second sliding contact surface 64 come into sliding contact with each other.

Then, even if the link mechanism constituted by the first link member 3, the second link member 4, the third link member 5, and the fourth link member 7 tries to pull the door A, the third link member 5
Since relative movement between the link member 7 and the fourth link member 7 becomes impossible,
This link mechanism is fixed in the state shown by the two-dot chain line in FIG. 2, and only the door A can be rotated to the fully open state shown by the one-dot chain line.

When closing the door A from the fully open state, the door A is rotated clockwise from the state shown by the dashed line in FIG.

Since the link mechanism is fixed until the door A rotates to the position shown by the two-dot chain line, the door A rotates stably.

When the door A is closed to the position shown by the two-dot chain line, the second stopper surface 74 and the second sliding contact surface 64 come out of sliding contact, and then the first stopper surface 73 and the first sliding contact surface 63 come into sliding contact. , door A
is no longer able to rotate about the door pivot 62, and on the other hand, the link mechanism is released, so that the door A is fully closed about the pivot pin 32 by an operation opposite to the opening of the door A.

The door A rotates stably whether opened or closed.

According to the automobile door hinge according to the present invention, the base end of the door can be moved to the outside of the vehicle body at the initial stage when the door is opened due to the simple structure, so that a sufficient space for getting in and out can be secured. It is possible to conveniently and safely get in and out of a car.

Various designs can be made by appropriately setting the shapes or combinations of the stopper surface and the sliding contact surface.

A pair of upper and lower door hinges may be used, and the door hinge according to the present invention may be used for only one of them; if used only for the lower part, a space for getting in and out of the foot will be secured, and if used only for the upper part, the upper end of the door will not have a face or head. You can avoid the top of the door to avoid hitting it.

[Brief explanation of drawings]

FIG. 1 is a plan view of an automobile, FIG. 2 is a front view of an embodiment of the present invention, and FIG. 3 is a front view of the same. 1...Door hinge, 2...Bracket for vehicle body, 3...First link member, 4...
・Second link member, 43... Connection pin, 5...
...Third link member, 6...Door bracket, 62...Door pivot, 63...First sliding surface, 64... Second sliding surface, 7...
・Fourth link member, 71... Pivoting shaft, 72...
...Other end, 73...First stopper surface, 7
4...Second stopper surface.

Claims (1)

[Scope of utility model registration request] A first link member whose base end is pivotally connected to a vehicle body bracket fixed to the vehicle body side, and a connecting pin whose base end is pivotally connected to the vehicle body bracket separately from the first link member and provided at the tip. A second link member is slidably and rotatably connected to the intermediate portion of the first link member through the second link member, and a second link member is rotatably connected to the tip of the first link member and is fixed to the door side. A third link member is pivotally connected to the door bracket by a door pivot, and a third link member is pivotally attached to an intermediate portion of the third link member via a pivot shaft, and one end is provided at the tip of the second link member. connected to the connecting pin, the other end is formed concentrically with the pivot shaft, and slides into sliding contact with a first sliding surface provided corresponding to the door bracket at the initial stage when the door is opened; A first stopper surface that separates from the first sliding contact surface when the door opening is greater than the set door opening, and a second sliding surface that is formed on the door bracket concentrically with the door axis when the door opening is greater than the set door opening. An automobile door hinge comprising a fourth link member formed with a second stopper surface in contact with the fourth link member.