JPH0127986Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology belongs to the technical field of member structures used in automobile bodies.

Therefore, this invention relates to a center pillar structure that is located between the front door and the rear door of an automobile, projects outward from the vehicle width, has an inverted U-shaped cross section, and has a door hinge mounting portion on the outside. In particular, it relates to a center pillar structure in which the front wall and the rear wall of the inverted U-shaped cross section are connected by a duct having a closed cross section, and the outer surface of the duct on the outer side of the vehicle width is welded to the inner surface of the door hinge attachment part. It is an idea.

<Prior art> In general, automobiles need to be robust enough to support their loads and withstand vibrations and shocks from the road surface while driving, and are also required to be lightweight. Various members of the cross section are used.

In particular, the center pillar disposed between the front door and the rear door supports the rear door in a cantilevered manner via a door hinge so that it can be opened and closed freely, and is designed to withstand shocks caused by frequent opening and closing operations of the rear door. A reinforcing plate is attached to the inside of the center pillar outer to prevent the door from sliding down.

<Problems to be solved by the invention> However, in the above-mentioned conventional center pillar structure, since the reinforcing plate attached to the inside of the center pillar outer was in the form of a backing patch, it was difficult to prevent the door from falling. The drawback was that the reinforcement may not be sufficient in some cases.

Further, the conventional center pillar structure described above did not have a flow path for indoor ventilation, and therefore had the disadvantage that air could not be smoothly circulated between the front seats and the rear seats of the automobile.

The purpose of this invention is to solve the problems of the center pillar structure based on the above-mentioned conventional technology as a technical problem, and to strengthen the center pillar and improve ventilation in the vehicle interior, thereby making use of body structure technology in the automobile industry. The purpose is to provide an excellent center pillar structure that will benefit the field.

<Means/effects for solving the problem> In order to solve the above-mentioned problem, the structure of this invention, which is based on the scope of the above-mentioned utility model registration claim, is based on the above-mentioned purpose. In the center pillar, which has an inverted U-shaped cross section, the front wall and the rear wall of the cross section are connected by a duct having a closed cross section to form an air flow path, thereby improving ventilation in the passenger compartment. Also, a technical means in which the outer surface of the duct on the outer side of the vehicle width is integrally joined to the inner surface of the door hinge mounting portion formed on the outer side surface of the center pillar on the vehicle width side, so as to serve as reinforcement against door sliding. This study included the following.

<Embodiment - Configuration> Next, one embodiment of the present invention will be described below based on the drawings of FIGS. 1 and 2.

In FIG. 1, reference numeral 1 denotes a center pillar of an automobile, which is disposed between a front door and a rear door of an automobile body (not shown), and a center pillar outer 2 is formed in a substantially inverted U-shape in cross section, and has a convex shape. The sides protrude outwards across the width of the vehicle.

A rear door (not shown) is cantilevered via a door hinge 4 at a door hinge mounting portion 3 on the outer surface of the center pillar outer 2 on the outer side of the vehicle width.

Further, 5 is a duct having a rectangular cross section, and flanges 6 and 6' formed at both ends in the vehicle width direction are connected to the front wall 7 and the rear wall 7' in the axle direction of the center pillar outer 2, as shown in FIG. ventilation hole 8 formed in
Welded to the inside of 8' with a sealer material in between,
The outer surface 9 of the duct 5 on the outer side of the vehicle width extends a contact surface against the inner surface of the door hinge mounting portion 3 of the center pillar outer 2, and the contact surface is spot welded to the inner surface of the door hinge mounting portion 3. .

A nut 10 is welded to the inner side of the contact surface of the outer surface 9 of the duct 5, and a bolt 11 is screwed into the nut to fix the door hinge 4.

<Embodiment - Effect> In the above-described configuration, an air flow path connecting the front seat and the rear seat in the vehicle interior is formed in the center pillar 1 by the duct 5, and ventilation in the vehicle interior is improved.
Furthermore, the center pillar 1 is reinforced by a closed-section duct 5 welded to the inside of the door hinge attachment part 3, ensuring sufficient strength to withstand shocks and vibrations caused by frequent opening and closing of the rear door (not shown).
Furthermore, the door does not fall down over time.

<Other Embodiments> It goes without saying that the embodiments of this invention are not limited to the above-mentioned embodiments, and various embodiments can be adopted, such as the cross section of the duct may be cylindrical.

<Effects of the invention> As described above, according to this invention, the front wall and the rear wall with the above-mentioned inverted U-shaped cross section are installed inside the center pillar that projects outward from the vehicle width and is formed with an inverted U-shaped cross section. By forming a connecting duct with a closed cross section, an air flow path is formed, allowing ventilation between the front and rear seats in the vehicle interior through the center pillar, improving the interior environment of the vehicle and improving the ride comfort of the vehicle. This has the excellent effect of further improving.

In addition, by attaching the outer surface of the duct on the outside of the vehicle width to the inner surface of the door hinge attachment part of the center pillar, the center pillar is reinforced by the duct and is sufficiently protected against shocks and vibrations caused by frequent opening and closing of the door. Durable strength is guaranteed, and the door does not sag over time, which is an excellent effect.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention,
FIG. 1 is an external perspective view of the center pillar seen from the outside of the automobile, and FIG. 2 is an end view of the main part. 3... Door hinge mounting portion, 1... Center pillar, 7... Front wall, 7'... Rear wall, 5... Duct, 9... Outer surface.

Claims (1)

[Scope of utility model registration request] In a center pillar structure that protrudes outward from the vehicle width and has an inverted U-shaped cross section and has a door hinge mounting portion on the outside, the front wall and the rear wall of the cross section are connected by a duct having a closed cross section, A center pillar structure characterized in that the outer surface of the duct is attached to the inner surface of the door hinge mounting portion.