JPH09112116A - Vehicle door hinge device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To reduce repair costs by reducing damage to vehicle body side components and the door itself when an excessive door opening force acts on a hinge device of an outside door of a vehicle, particularly a cab-over type truck. Greatly reduced. SOLUTION: A weak point portion is formed in a stopper portion which is provided on a hinge hime attached to a vehicle body side and limits a normally fully opened position of the door, and when the door is subjected to an excessive opening force, the stopper portion is opened. By deforming, damage to the body-side components, door panel, etc. is prevented. As for the weak point portion, a notch is provided in the stopper portion, the plate thickness of the stopper portion is reduced, or the stopper portion is formed of a material having low strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door hinge device for a vehicle, and more particularly to a door hinge device suitable for use in a hinge device for an outside door provided in a cab of a cab-over type truck.

[0002]

2. Description of the Related Art A typical structure of a door hinge device in a conventional cab-over type truck having an outer door is described.
For convenience sake, an embodiment of the present invention will be described with reference to the side view of the cab of FIG. 1 and the schematic plan view of the hinge portion of FIG. 6 and the front view of FIG. 7. First, in FIG. 1, reference numeral 10 indicates a cab of a cab-over type truck as a whole, 12 is a front pillar of the cab 10, 14 is a windshield glass whose both side edges in the vehicle width direction are supported by the front pillar 12. Reference numeral 16 is an outer opening door attached to the door opening of the cab 10, and reference numerals 18 and 20 are door hinge devices arranged at two upper and lower positions on the front edge of the outer opening door 16. The upper and lower door hinge devices 18
The and 20 have, of course, slightly different shapes depending on the shapes of the vehicle body members around the door 16 and the front pillar 12, etc., but since the basic structure is substantially the same, in the following description, for convenience. The upper hinge device 18 will be described.

As shown in FIG. 6, a hinge device 18 is a hinge device which is attached to a front pillar 12 arranged at the front end of a door opening on the vehicle body side by a bolt 22 (only the center line is shown). Email 24 and door 16
The hinge mail 28 is attached to the front end edge of the hinge mail 28 by bolts 26 (only the center line is shown), and the hinge shaft 32 pivotally attaches the tip portion 30 of the hinge mail 28 to the hinge mail 24.

The hinged hemmer 24 is formed in a hat shape in cross section along a plane in the vehicle width direction, and has a pair of substantially parallel side walls 34 and a top plate 36.
An end portion of the top plate 36 on the hinge mail 28 side forms a flat plate-shaped stopper portion 38. On the other hand, the hinge mail 28 has an approximately U-shaped front surface, and an arm portion including a pair of parallel arms having a planar shape bent in a hook shape from the attachment portion to the door 16 toward the hinge shaft 32 side. 40 and the same arm 4
No. 0 U-shaped leg portion is connected to each other by a connecting plate 42, and the leg portion 40, as shown in FIG.
It is inserted into the inner space of the hinge himeme 24, and the vicinity of its front end bent portion is hinged by the hinge shaft 32.
Pivotally attached to the parallel side wall 34 of the.

In FIG. 6, the position of the hinge mail 28 when the door 16 is closed is shown by a chain double-dashed line.
Hinge mail 28 when the door 16 is in the normal fully open state
The position of is indicated by a solid line in the figure. At the normal fully open position of the door 16, the contact portion 46 adjacent to the bent portion 44 of the arm portion 40 of the hinge mail 28 comes into contact with the stopper portion 38 to position the door 16.

As is well known in the art, in many cab-over trucks, the cab 10 shown in FIG. 1 is pivoted at its lower front end to a front end portion of an undercarriage frame (not shown) so that the cab 10 is When inspecting and servicing an engine or the like arranged below, a structure is widely adopted in which the cab 10 is rotated forward around the pivot axis of the lower portion of the front end to tilt up in a desired manner. In a vehicle equipped with this type of cab 10, when the cab 10 is tilted up and the door 16 is accidentally opened, an excessive door opening force acts when the door 16 is opened for some other reason. In this case, the hinge Himale 24 on the vehicle body side
Since the stopper portion 38 of the door is structurally rigid, the door 16
A large force acts on the bent portion 44 of the arm portion 40 of the side hinge mail 28, and a portion A shown by hatching in FIG.
Plastic deformation such as folds or wrinkles may occur.

As described above, when the door 16 is subjected to an excessive door opening force and the bent portion 44 of the hinge mail 28 is plastically deformed, as shown by the alternate long and short dash line in FIG.
The relative position between the panel of No. 6 and the hinge shaft 32 changes, and the locus at the time of opening and closing the door 16 changes. For this reason, when the door 16 is closed, each part of the door 16 interferes with a member around the door-contact part on the vehicle body side, and, for example, a corner panel or a corner lamp on the front part of the vehicle body is damaged, and of course the door 16
There is a problem such as deformation of the panel.

[0008]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above circumstances, and is intended for a hinge himmer which is mounted on the vehicle body side when an excessive door opening force acts on the outer door of the vehicle. By deforming the stopper that limits the fully open position of the door, the rotation trajectory of the door is not changed, and damage to the door panel and surrounding vehicle side panels, corner lamps and other ancillary equipment can be reliably prevented. An object is to provide a vehicle door hinge device.

[0009]

In order to achieve the above object, the present invention provides a hinge himmer fixed to a vehicle body,
A hinge mail fixed to the door side and a hinge shaft for rotatably connecting the hinge mail and the hinge mail are provided, so that the hinge mail contacts the hinge mail when the door is opened to open the door fully open position. An object of the present invention is to provide a vehicle door hinge device characterized in that a weak point portion which is deformed when a door opening force of a set value or more is formed is formed in the stopper portion which is limited.

In the present invention, the weak point portion is formed by a notch provided in the stopper portion, or is formed by partially reducing the plate thickness of the stopper portion, or the weak point portion is formed. Is preferably made of a material having a lower strength than the rest of the hinge himmer.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to FIGS. (Note that FIG.
Also, members and portions that are substantially the same as or corresponding to those of the conventional configuration described with reference to FIG. 7 are denoted by the same reference numerals, and redundant description will be omitted. In the present invention, as shown in the front view of FIG. 3, particularly, the top plate 36 of the hinge himmer 24 fixed to the front pillar 12 by bolts or the like is mounted on the door 16 side. By contacting the hook-shaped bent arm portion 40 of the hinge mail 28,
The notch 4 is formed in the stopper portion 38 that limits the regular fully open position of
8 are formed.

By providing the notch 48, the stopper portion 38 becomes a strip portion having a width substantially the same as or slightly wider than the arm portion 40 of the hinge mail 28, so that the door 16 is excessively opened. When force is applied and the cooperating arms 40 of the hinge mail 28 come into contact, the arms 40 are well shown in the front view of FIG. 5 and the plan view of FIG. 4 without causing plastic deformation. As described above, the stopper portion 38 becomes a weak point portion, causes plastic deformation, and flips up to stop the door 16 and the hinge mail 28. As a result, the door 16 and the hinge mail 28, which are indicated by the alternate long and short dash lines in FIG. 4, are displaced from the normally open positions to the over-opening positions indicated by the solid lines in FIG. The rotation locus around the hinge axis 32 does not change.

Therefore, although the stopper portion 38 of the hinge hail 24 on the vehicle body side is deformed, not only the surrounding vehicle body members such as the corner panel and the corner lamp but also the door 16 side members, that is, the hinge mail 28, No damage is caused to the panel or the like of the door 16. Therefore, it is only necessary to replace the hinge Himale 24 at an appropriate time, and the repair cost can be greatly reduced as compared with the conventional case. In FIG. 2, the closed state of the door 16 is shown by a two-dot chain line, and the normal fully open state is shown by a solid line. Further, in FIG. 4, the closed state of the door 16 is indicated by a two-dot chain line. Further, in FIG. 2, B indicated by a chain double-dashed line is an outline of the vehicle body.

Next, as a modified example of the stopper portion 38 forming the weak point portion, when the plate thickness of the stopper portion 38 is thinned during the molding of the hinge hemmel 24, when an excessive door opening force is applied. , The hinge mail 28 can be easily plastically deformed without deformation, and as another alternative, the stopper portion 38 is made of a material having a small strength, such as aluminum alloy or copper. It may be made of alloy or the like and attached to the corresponding part of the hinge mail 24.
It is clear that the same effects as the above can be obtained.

[0015]

As described above, the vehicle door hinge apparatus according to the present invention includes a hinge hemale fixed to the vehicle body side.
A hinge mail fixed to the door side and a hinge shaft for rotatably connecting the hinge mail and the hinge mail are provided, so that the hinge mail contacts the hinge mail when the door is opened to open the door fully open position. In the one provided with a limiting stopper part, the weakening part which is deformed when a door opening force of a set value or more acts is formed on the stopper part, and an excessive door opening force acts on the door. At times, there is no significant damage to the vehicle body constituent members or accessories around the door, or no major damage to the panel or the like of the door itself, so there is an advantage that the cost for repair can be greatly reduced.

Further, since the weak point is formed by the notch provided in the stopper, the above advantages can be obtained by making a slight modification to the conventional hinge himmer, so that the manufacturing is possible. There is an advantage that the cost can be reduced. Further, by forming the weak point portion by partially thinning the plate thickness of the stopper portion, or by forming the weak point portion with a material having a strength smaller than other portions of the hinge himmer. The effect equivalent to the above can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a truck cab to which the present invention is applied.

FIG. 2 is a schematic plan view of an upper hinge device 18 in FIG.

FIG. 3 is a front view of the hinge device 18 in FIG.

4 is a schematic plan view when an excessive door opening force acts on the hinge device 18 shown in FIG.

5 is a front view of the hinge device 18 when the excessive door opening force shown in FIG. 4 is applied.

FIG. 6 is a schematic plan view similar to FIG. 2, showing a conventional hinge device 18;

7 is a front view of the hinge device 18 shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Cab, 12 ... Front pillar, 16 ... Exterior door, 18 ... Upper hinge device, 20 ... Lower hinge device, 2
4 ... Hinge Hemer, 28 ... Hinge Male, 32 ... Hinge Shaft, 38 ... Stopper, 46 ... Abutment, 48 ... Notch.

Front Page Continuation (72) Inventor Masaki Narita 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Inventor Michihiro Ozaki 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation Within the corporation

Claims (4)

[Claims] 1. A hinge himmer fixed to a vehicle body,
A hinge mail fixed to the door side and a hinge shaft for rotatably connecting the hinge mail and the hinge mail are provided, so that the hinge mail contacts the hinge mail when the door is opened to open the door fully open position. A vehicle door hinge device comprising a limiting stopper portion, wherein the stopper portion is formed with a weak point portion which is deformed when a door opening force of a set value or more is applied. 2. The vehicle door hinge device according to claim 1, wherein the weak point portion is formed by a notch provided in the stopper portion. 3. The vehicle door hinge device according to claim 1, wherein the weak point portion is formed by partially thinning a plate thickness of the stopper portion. 4. The door hinge device for a vehicle according to claim 1, wherein the weak point portion is formed of a material having a strength lower than that of the other portion of the hinge himmer.