JPH0672152A - Automobile door structure - Google Patents

Abstract

PURPOSE:To provide automobile door structure preventing stress concentration to a bracket caused by burrs and adhesive failure between a reinforcing beam and a door outer panel caused by welding failure between the reinforcing beam and the bracket. CONSTITUTION:In automobile door structure with a reinforcing beam 5 disposed along the longitudinal direction between the door outer panel 2 and door inner panel 3 of an automobile door, relief parts 7, 8 for spacing the reinforcing beam 5 from a bracket 6 welded to each end part of the reinforcing beam 5 so as to support the reinforcing beam 5 to the door panel are provided at the tip of the bracket 6 and the plate face, corresponding to the end part of the reinforcing beam 5, of the bracket 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile door structure capable of improving workability.

[0002]

2. Description of the Related Art In an outer panel of an automobile door, an iron plate used as a panel is thin for its area.
As shown in FIG. 5, a reinforcing beam 102 made of steel pipe may be disposed between the door outer panel 100 and the door inner panel 101 for reinforcement. The reinforcing beam 102 has a structure in which a steel pipe such as a round pipe is cut, and brackets 103 obtained by press drawing a steel plate are welded to both ends thereof. The bracket 103 is spot-welded to the door inner panel 101, It is supported on the inner surface of the door. Also,
The side surface of the reinforcing beam 102 is adhered to the inner surface of the door outer panel 100 with an adhesive 104 in order to improve the surface rigidity of the door outer panel 100 and the like.

[0003]

However, when the steel pipe used for the reinforcing beam 102 is cut and the bracket 103 is pressed, burrs 104 are apt to occur at the end portions of the reinforcing beam 102 and the bracket 103. There is a gap between the door outer panel 100 and
There is also a high possibility that a gap is created between the reinforcing beam 102 and the reinforcing beam 102, resulting in poor attachment to the door outer panel 100 or poor adhesion. Further, as shown in FIG. 7, bending stress tends to be locally concentrated on the end portion of the steel pipe in the reinforcing beam 102 against the impact from the side, so that the bracket 103
There is a possibility that cracks may occur in the sheet, which may cause a problem that required strength cannot be obtained. For this reason, as shown in FIGS. 8 and 9, the bracket 103 side is subjected to press working, end crushing processing, and the steel pipe side is subjected to a chamfering process by cutting processing, respectively, to prevent these problems. Was there. Therefore, the manufacturing man-hours are increased due to these processes, and the cost is also high.

The present invention solves the above problems, prevents stress concentration on the bracket due to burrs, and prevents defective adhesion between the reinforcing beam and the door outer panel due to welding failure between the reinforcing beam and the bracket, and at the same time in the manufacturing process. It is an object of the present invention to provide a vehicle door structure that can reduce the cost and cost.

[0005]

In order to solve the above-mentioned problems, the present invention provides a vehicle door structure in which a reinforcing beam is arranged along the front-rear direction between a door outer panel and a door inner panel of a vehicle door. The reinforcing beam is welded to both ends of the reinforcing beam to support the reinforcing beam to the door panel, and the bracket plate surface corresponding to the end of the reinforcing beam is attached to the reinforcing plate. The escape portion is provided to separate the beam from the bracket.

[0006]

Since the relief portion is provided at the tip portion of the bracket and the end portion of the reinforcing beam in the bracket, the work for removing the burrs from the tip portion of the bracket and the end portion of the reinforcing beam can be omitted. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 3, the door panel 1 is composed of a door outer panel 2 and a door inner panel 3, and a window glass 4 is vertically moved between the door outer panel 2 and the door inner panel 3.

Door outer panel 2 and door inner panel 3
Pipe-shaped reinforcing beams 5 are arranged in the front-rear direction between each other. The reinforcing beams 5 are formed by cutting a steel pipe such as a round pipe, and at both ends thereof, a bracket 6 formed by press drawing a steel plate. Welded. The reinforcing beam 5 is supported on the inner surface of the door by spot welding the bracket 6 to the door inner panel 3.

The bracket 6 has relief portions 7 and 8 which are curved in a direction away from the reinforcing beam 5 at a position corresponding to the tip of the bracket 6 and the end 5a of the reinforcing beam 5 in the bracket 6. Is provided.

The side surface of the reinforcing beam 5 is adhered to the inner surface of the door outer panel 2 with an adhesive 9.

According to the above structure, as shown in FIG. 4, even when the burr 10 is present at the end of the reinforcing beam 5 and the tip of the bracket 6, the bracket 6 has a relief portion 7,
Since the burr 10 is provided, the burr 10 does not hit the plate surfaces of the reinforcing beam 5 and the bracket 6. Since the burrs 10 do not come into contact with each other, it is possible to prevent the stress from being concentrated on the bracket 6 and the problems of insufficient welding between the reinforcing beam 5 and the bracket 6.

[0012]

As described above, according to the vehicle door structure of the present invention, the reinforcing beam is disposed along the front-rear direction between the door outer panel and the door inner panel of the vehicle door. In the door structure, each end portion of a bracket that is welded to both ends of the reinforcing beam to support the reinforcing beam on the door panel,
Since the plate surface of the bracket corresponding to the end portion of the reinforcing beam is provided with a relief portion that separates the reinforcing beam and the bracket, the terminal crushing process for the bracket and the chamfering process for the steel pipe can be omitted. Therefore, it is possible to prevent stress concentration on the bracket due to burrs and defective adhesion between the reinforcing beam and the door outer panel due to defective welding of the reinforcing beam and the bracket. Further, since there is no defect in the component dimensional accuracy caused by burrs, a positioning jig associated with welding is unnecessary. Therefore,
Work efficiency can be improved and cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing an automobile door provided with a reinforcing beam.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view showing a welded portion of a reinforcing beam and a bracket.

FIG. 4 is a partial cross-sectional view showing burrs of a reinforcing beam and a bracket.

FIG. 5 is a side view of a vehicle body showing a conventional automobile door.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a conceptual diagram showing a state in which a weight is applied to the automobile door from the side.

FIG. 8 is a cross-sectional view showing a state where burrs on the reinforcing beam and the bracket are removed.

9 is a partially enlarged sectional view of FIG.

[Explanation of symbols]

 1 Door Panel 2 Door Outer Panel 3 Door Inner Panel 5 Reinforcing Beam 6 Bracket 7 Relief Part 8 Relief Part 9 Adhesive 10 Burr

Claims (1)

[Claims] 1. A vehicle door structure in which a reinforcing beam is disposed between a door outer panel and a door inner panel of an automobile door along the front-rear direction, and the reinforcing beam is welded to both ends of the reinforcing beam. Each tip portion of the bracket that supports the reinforcing beam to the door panel, and the plate surface of the bracket corresponding to the end portion of the reinforcing beam,
A door structure for an automobile, characterized in that a relief portion is provided to separate the reinforcing beam from the bracket.