JP2002347659A - Body joint structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve quality of welding performed on respective mating parts of rustproofed members. SOLUTION: A wheel house 14B of a wheel house outer panel 14 and a part of the mating part 14C that corresponds to a specified width W extending from the wheel house 14B are subjected to rust prevention 20 using galvanization, and another part thereof is a non-rustproof part. A part of the mating part 18B of a wheel house inner panel 18 that corresponds to a specified width W extending from a wheel house 18A is subjected to the rust prevention 20 using galvanization, and another part thereof is a non-rustproof part. The mating part 14C of the wheel house outer panel 14 and the mating part 18B of the wheel house inner panel 18 are continuously welded to each other at their respective non-rustproof parts from the side of the wheel house inner panel 18 by laser welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body joining structure, and more particularly, to a vehicle body joining structure of a vehicle such as an automobile in which a plurality of members are welded at a joint of each member.

[0002]

2. Description of the Related Art Conventionally, an example of a vehicle body joining structure of a vehicle such as an automobile in which a plurality of members are welded at a joining portion of each member is disclosed in Japanese Patent Publication No. 98-3793 of the Invention Association.

As shown in FIG. 6, in this vehicle body joining structure, a joining portion 104 between a side outer 100 and a wheel house outer 102 in an automobile body is welded by arc welding, laser welding, or the like, and a tire 106 of the joining portion 104 is welded. A sealer 108 is applied to the side end.

[0004]

However, in such an automobile body joining structure, the side outer 1
It is necessary to form the rust-proof steel plate having the surface 00 and the foil house outer 102 subjected to rust-preventive treatment. Zinc plated as a surface treatment of the rust-proof steel plate has a lower boiling point than iron. As a result, there is a problem in that the quality of welding is degraded due to the fact that the molten iron is blown off by the gas generated by the boiling of zinc during welding.

The present invention has been made in view of the above circumstances, and has as its object to obtain a vehicle body joining structure capable of improving the welding quality of a joining portion of a member subjected to rust prevention treatment.

[0006]

According to a first aspect of the present invention, there is provided a vehicle body joining structure in which a plurality of members subjected to a rustproofing process are welded to each other at a joining portion of each member. The part is a non-rust-proof part, and the non-rust-proof parts are welded to each other.

[0007] Therefore, since the non-corrosion-treated portions formed at a part of the joint portion of each member are welded to each other, the gas generated by boiling the zinc plated for the rust-proof treatment at the time of welding as in the prior art is used. As a result, the problem that the molten iron is blown off does not occur, so that the welding quality of the joints in the member subjected to the rustproofing treatment can be improved.

According to a second aspect of the present invention, there is provided a vehicle body joining structure in which a plurality of members subjected to a rust-proof treatment are welded to each other at a joint where the rust-proof treatment has been performed. The gap forming means for forming the gap is formed.

Therefore, the joints of each member subjected to the rust-proof treatment are welded to each other. Even when zinc is boiled and gas is generated in the welded parts, this gas is formed at the joints by the gap forming means. Can be reliably removed from the gap. As a result, since defects such as molten iron being blown out by the gas generated by boiling zinc plated for rust prevention treatment during welding do not occur, the welding quality of the joint in the member subjected to rust prevention treatment can be improved. .

According to a third aspect of the present invention, in the vehicle body joining structure according to any one of the first and second aspects, the welding is continuous welding.

Accordingly, in addition to the contents described in any of the first and second aspects, the waterproofness of the welded portion can be improved by continuously welding the joined portions of the members to each other.

According to a fourth aspect of the present invention, in the vehicle body joining structure according to any one of the first to third aspects, the plurality of members are a wheel house outer and a wheel house inner.

Therefore, the welding quality at the joint between the wheel house outer and the wheel house inner can be improved, and the waterproofness of the weld can be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a vehicle body joining structure according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a forward direction of the vehicle, an arrow UP indicates an upward direction of the vehicle, and an arrow IN indicates an inward direction of the vehicle width.

As shown in FIG. 3, a wheel house outer panel 14 is disposed inside the quarter panel 12 of the vehicle body 10 of the present embodiment.

As shown in FIG. 2, a wheel house portion 14B which is an outer peripheral portion of the tire 16 (see FIG. 3) in the vertical wall portion 14A of the wheel house outer panel 14 projects in an arc shape outward in the vehicle width direction. A wheel house inner panel 18 is disposed inside the wheel house portion 14B of the wheel house outer panel 14 in the vehicle width direction.

A flange 18B is formed on the outer peripheral edge of the wheel house portion 18A of the wheel house inner panel 18, and the flange 18B is connected to the wheel house portion 14B of the vertical wall portion 14A of the wheel house outer panel 14.
Are joined to a joining portion 14C shown in FIG.

As shown in FIG. 1, a wheel house portion 14B and a joint portion 14C of the wheel house outer panel 14 are provided.
The part having a predetermined width W from the side of the wheel house part 14B is subjected to rust-prevention processing 20 by zinc plating on the surface, and the other part is a non-rust-prevention processing part which is not subjected to rust-prevention processing. ing. That is, the wheel house outer panel 14 is a material connection between a rust-proof steel plate and a non-rust-proof steel plate.

Further, a portion of the joint portion 18B of the wheel house inner panel 18 having a predetermined width W from the side of the wheel house portion 18A is provided with a rust-preventive process by zinc plating on its surface.
0 is given, and the other parts are non-rust-proof parts that have not been subjected to rust-proof processing. That is, the wheel house inner panel 18 is a material connection between a rust-proof steel plate and a non-rust-proof steel plate.

Joining part 1 of wheel house outer panel 14
4C and the joining portion 18B of the wheel house inner panel 18 are joined by one-side welding such as laser welding from the wheel house inner panel 18 side in a non-rust-proof treatment portion separated from the wheel house portion side by the predetermined width W. It is continuously welded along the longitudinal direction of 14C and 18B.

Next, the operation of the present embodiment will be described.

In this embodiment, as shown in FIG. 1, the joint 14C of the wheel house outer panel 14 and the joint 18B of the wheel house inner panel 18 are separated from the wheel house by a predetermined width W. In the processing unit,
It is continuously welded along the longitudinal direction of the joints 14C and 18B by laser welding. As a result, as in the prior art,
The problem that the molten iron is blown off by the gas generated by boiling the zinc plated for rust prevention treatment during welding does not occur.

For this reason, the welding quality of the wheel house outer panel 14 and the wheel house inner panel 18 which have been subjected to the rustproofing treatment can be improved. In addition, since the joints 14C and 18B are continuously welded to each other by laser welding, the waterproofness of the welded portion can be improved, so that the sealer conventionally used can be omitted, and the cost can be reduced.

Next, a second embodiment of the vehicle body joining structure according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 4, in the present embodiment, the entire surface of the wheel house outer panel 14 and the wheel house inner panel 18 is subjected to a rustproofing process 20 by zinc plating.

The front edge of the joining portion 18B of the wheel house inner panel 18 is bent toward the joining portion 14C of the wheel house outer panel 14, forming a bent portion 18C as gap forming means. For this reason, a gap 24 is formed between the joint 18B of the wheel house inner panel 18 and the joint 14C of the wheel house outer panel 14 along the longitudinal direction of the joints 14C and 18B.

Next, the operation of the present embodiment will be described.

In this embodiment, the joint 14C of the wheel house outer panel 14 and the wheel house inner panel 18
As shown in FIG. 5, when welding the joint portion 18B of the wheel house inner panel 1
8 while pressing the vicinity of the bent portion 18C in the joint portion 18B in the direction of the joint portion 14C of the wheel house outer panel 14 supported by the support member 32 (the direction of arrow A in FIG. 5), the joint portions 14C and 18B are welded by laser welding. Weld continuously with each other.

As a result, the distance L of the welded portion can be set to an appropriate welding distance, and even when zinc is boiled and gas is generated in the welded portion subjected to the rust-preventive processing 20, this gas is removed. , A gap 2 formed by the bent portion 18C
4 can be reliably removed from the longitudinal end of the gap 24. As a result, unlike the prior art, a problem does not occur in which zinc plated for rust prevention treatment is boiled during welding and molten iron is blown off by generated gas.

For this reason, the welding quality between the wheel house outer panel 14 and the wheel house inner panel 18 which have been subjected to the rustproofing treatment can be improved. In addition, since the joints 14C and 18B are continuously welded to each other by laser welding, the waterproofness of the welded portion can be improved, so that the sealer conventionally used can be omitted, and the cost can be reduced.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included in the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in the above-described embodiment, as shown in FIG. 4, the bent portion 18C as the gap forming means is formed at the joint 18B of the wheel house inner panel 18, but the gap forming means is not limited to the bent portion 18C, but may be convex. It may be another configuration such as a section. Further, the gap forming means may be formed at the joint 14C of the wheel house outer panel 14 or at both the joint 18B of the wheel house inner panel 18 and the joint 14C of the wheel house outer panel 14.

In the above embodiment, the joint 14C of the wheel house outer panel 14 and the joint 18B of the wheel house inner panel 18 are laser-welded. However, welding other than laser welding may be used.

Further, in the above-described embodiment, the body joining structure of the present invention is applied to the joint between the rear wheel house inner panel and the rear wheel house outer panel. Etc. can be applied to other vehicle body joints.

[0036]

According to the first aspect of the present invention, in a vehicle body joining structure in which a plurality of members subjected to a rust-proof treatment are welded to each other at a joining portion of each member, a part of the joining portion of each member is non-rustproof. Since the non-corrosion-treated portions are welded to each other as a treated portion, there is an excellent effect that the welding quality of the joint portion in the member subjected to the rust-proof treatment can be improved.

According to a second aspect of the present invention, there is provided a vehicle body joining structure in which a plurality of members subjected to a rust-proof treatment are welded to each other at a joint where the rust-proof treatment has been performed. Since the gap forming means for forming the gap is formed, there is an excellent effect that the welding quality of the joint in the member subjected to the rust-proofing treatment can be improved.

According to a third aspect of the present invention, in the vehicle body joining structure according to any one of the first and second aspects, the welding is continuous welding. Therefore, it has an excellent effect that the waterproofness of the welded portion can be improved.

According to a fourth aspect of the present invention, in the vehicle body joining structure according to any one of the first to third aspects, since the plurality of members are a wheel house outer and a wheel house inner, the wheel house outer and the wheel house inner are provided. This has an excellent effect of improving the welding quality at the joint with the steel sheet and improving the waterproofness of the welded portion.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along line 1-1 in FIG.

FIG. 2 is an exploded perspective view showing the vehicle body joining structure according to the first embodiment of the present invention, as viewed from diagonally forward inside of the vehicle body.

FIG. 3 is a side view showing a vehicle body to which the vehicle body joining structure according to the first embodiment of the present invention is applied.

FIG. 4 is a cross-sectional view corresponding to FIG. 1, illustrating a vehicle body joining structure according to a second embodiment of the present invention.

FIG. 5 is an explanatory view showing a welding process of a vehicle body joining structure according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a conventional vehicle body joining structure.

[Explanation of symbols]

14 Wheel House Outer Panel (Rust-Proofed Member) 14C Wheel House Outer Panel Joint 18 Wheel House Inner Panel (Rust-Proofed Member) 18B Wheel House Inner Panel Joint 18C Bend of Wheel House Inner Panel (Gap forming means) 20 Rust prevention processing 24 Gap

Claims (4)

[Claims] In a vehicle body joining structure in which a plurality of members subjected to a rustproofing process are welded to each other at a joining portion of each member, a part of the joining portion of each member is a non-rustproofing portion, A body-joining structure in which parts are welded to each other. 2. A vehicle body joining structure in which a plurality of rust-proofed members are welded to each other at a joint where the rust-proofing treatment has been performed on each member, wherein a gap for venting gas is formed at the joint. A vehicle body joining structure, wherein a gap forming means is formed. 3. The vehicle body joining structure according to claim 1, wherein the welding is continuous welding. 4. The vehicle according to claim 1, wherein the plurality of members are a wheel house outer and a wheel house inner.
3. The vehicle body joining structure according to any one of 3.