JPH0630608Y2 - Hinge mounting structure for automobile opening and closing body - Google Patents

Description

TECHNICAL FIELD The present invention relates to an opening / closing body such as an automobile trunk lid or engine hood, and more particularly to a hinge mounting structure for an automobile body opening / closing body formed of a resin material.

2. Description of the Related Art As a hinge mounting structure for a trunk lid of an automobile, a hinge arm mounting base is fixed to the end of the trunk lid as generally disclosed in Japanese Utility Model Laid-Open No. 57-84219, and The hinge side end of the hinge arm is connected with a hinge pin to a bracket member installed at the opening edge of the trunk room. Bolts and nuts are fixed. Further, a reinforcement is joined to the inner surface of the portion corresponding to the hinge arm attachment of the inner panel to secure the attachment rigidity of the hinge arm. On the other hand, in recent years, the trunk lid is formed of a resin material in order to reduce the weight of the vehicle body and increase the degree of freedom in shaping. However, even in the case of a resin-made trunk lid, As shown in FIG. 5, the inner panel 3 is joined to the back surface of the peripheral portion of the outer panel 2 of the trunk lid 1, and the closed cross section 4 is formed.
The closed cross section 4 ensures the lid surface rigidity, and the mounting base 5a of the hinge arm 5 is fixed to the outer surface of the bottom wall 3a of the inner panel 3 by the bolt 6. In the case of this resin trunk lid, the reinforcement 7 having the weld nut 8 is integrally molded on the bottom wall 3a of the inner panel 3 to secure the mounting rigidity of the hinge arm 5. There is.

Problems to be Solved by the Invention In the case where the outer panel 2 and the inner panel 3 are resin-molded, the plate thickness is inevitably thicker than that of the metal panel material in terms of panel surface rigidity and moldability. Therefore, the outer panel 2 Inevitably, the height from the outer surface to the outer surface of the bottom wall 3a of the inner panel 3 is increased. Moreover, when the mounting base portion 5a of the hinge arm 5 is fixed to the outer surface of the bottom wall 3a of the inner panel 3, the height of the mounting base portion 5a is further increased, so that the occupied space in the upper part of the trunk room becomes significantly large. Thus narrowing the effective space of the trans room. The same can be said for a metal panel-made trunk lid, because the mounting base 5a is visible when the trunk lid is opened and spoils the appearance, and the end cap is capped at the end of the bolt 6. However, there is a risk that the luggage may be damaged by interfering with the luggage loaded in the luggage compartment.
Since bolts and nuts are connected, the number of parts and the number of work steps increase, which is disadvantageous in terms of cost. Therefore, the present invention does not project to the lower side of the opening / closing body, avoids interference with other parts, does not impair the external appearance when opening / closing the opening / closing body, and can reduce the number of parts and assembly work. (EN) A hinge mounting structure for an opening / closing body for an automobile, which can reduce costs.

Means for Solving the Problems In a structure in which an outer panel of an opening / closing body and an inner panel that is joined to the back surface of the outer panel and forms a closed cross section at least at the peripheral edge of the opening / closing body are molded from a resin material, fixed to the end of the opening / closing body. Reinforce is joined to the lower surface of the mounting base of the hinge arm, and the mounting base is integrally molded with the reinforcement on the inside of the bottom wall of the inner panel, and the hinge-side end of the hinge arm is connected to the inner side of the inner wall. It is arranged so as to penetrate the panel and project to the outside.

Action The mounting base of the hinge arm projects into the closed cross section formed by the outer panel and the inner panel, and interference with other parts below the opening / closing body is avoided.

Embodiment Hereinafter, one embodiment of the present invention will be described in detail by taking a trunk lid as an example of an opening / closing member and assigning the same reference numerals to the same parts as those of the conventional structure.

1 to 3, in the trunk lid 1, both the outer panel 2 and the inner panel 3 are molded with a resin material, and the inner panel 3 is joined to the rear surface of the peripheral edge of the outer panel 2 to form a closed cross section 4. is doing. Hinge arms 5 fixed to both ends of the trunk lid 1
Has a reinforcement 7 joined to the lower surface of its mounting base 5a, and the hinge arm 5 connects the mounting base 5a with the reinforcement 7 to the bottom wall 3a of the inner panel 3.
Is integrally molded inside, and the hinge-side end portion 5b of the hinge arm 5 penetrates the inner panel 3 and is projected outward. In this embodiment, both side edges of the reinforcement 7 are curved upward to form the bottom wall 3a.
A pair of bead portions 9 are formed on the.

According to the above-described structure of the embodiment, the reinforcement 7 is inserted into the plate thickness of the bottom wall 3a of the inner panel 3, and the mounting base portion 5a of the hinge arm 5 projects from the bottom wall 3a. Since it protrudes inside the closed cross-section portion 4 inside, the amount of protrusion of the trunk lid 1 toward the inside of the trunk room can be reduced by this mounting base portion, and the mounting base portion 5a does not need to be bolted. ,
The protrusion of the bolt head is also eliminated. As a result, the occupied space in the upper part of the luggage compartment can be kept as small as possible, the effective space of the luggage compartment can be expanded, and it is possible to prevent the loaded luggage from interfering with and damaging the mounting base portion 5a and the bolt head. Since there is no protrusion on the outer surface of the bottom wall 3a, the appearance when the lid is opened can be improved. Further, as described above, since the mounting base portion 5a is integrally molded with the bottom wall 3a, bolts and nuts are not required, and the number of man-hours is reduced accordingly, so that the cost can be reduced. Further, since the bead portion 9 is formed on the bottom wall 3a along both sides of the reinforcement 7 along the curve, stress can be dispersed in the bead portion 9 to prevent the occurrence of cracks and the like. There is also an advantage that the deformation and the bending at the time of adjusting the installation can be absorbed by the deformation of the bead portion 9 as shown by the chain line in FIG.

In addition, although the trunk lid is disclosed as the opening / closing body in the above-described embodiment, the same can be applied to the engine hood.

As described above, according to the present invention, the hinge arm is joined to the mounting base by a reinforcement, and the mounting base is integrally molded with the reinforcement inside the inner panel bottom wall of the opening / closing body. , The hinge side end portion of the hinge arm penetrates through the inner panel and is arranged to project outside.
The mounting base does not project to the lower surface of the inner panel bottom wall. As a result, in both the outer panel and the inner panel, the resin opening / closing body whose plate thickness becomes thicker than that of the metal panel material, and the protruding amount on the lower side thereof can be minimized to prevent interference or damage with other components. This can be prevented, and since the mounting base does not exist as a protrusion when the lid is opened, the appearance can be improved. Further, since the work of fixing the bolts and nuts is not required, the number of parts and the work man-hours can be reduced, which greatly contributes to cost reduction, which is a great practical effect.

[Brief description of drawings]

1 is a sectional view taken along the line I--I of FIG. 4 showing an embodiment of the present invention, FIG. 2 is an enlarged view of the II range portion of FIG. 1, and FIG. 3 is III--III of FIG. FIG. 4 is a sectional view taken along the line, FIG. 4 is a perspective view of the rear portion of the automobile, and FIG. 5 is a sectional view similar to FIG. 1 showing a conventional structure. 1 ... Opening / closing body (trunk lid), 2 ... Outer panel, 3 ... Inner panel, 3a ... Same bottom wall, 4 ... Closed cross section, 5 ... Hinge arm, 5a ... Mounting base, 7 ...
Reinforce.

Claims (1)

[Scope of utility model registration request] 1. A structure in which an outer panel of an opening / closing body and an inner panel joined to the back surface of the outer panel and forming a closed cross section at least at the peripheral edge of the opening / closing body are molded from a resin material and fixed to the end of the opening / closing body. Reinforce is joined to the lower surface of the mounting base of the hinge arm, and this mounting base is integrally molded together with the reinforcement inside the bottom wall of the inner panel, and the hinge side end of the hinge arm is fixed to the inner panel. A hinge mounting structure for an opening / closing body for an automobile, which is arranged so as to penetrate therethrough and project outside.