Welding structure of T-type welding joint

Patent metadata

Field	Value
Publication number	US-11628631-B2
Application number	US-202017071199-A
Country	US
Kind code	B2
Filing date	Oct 15, 2020
Priority date	Mar 31, 2020
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A welding structure of a T-shape welding joint in which a second base material is welded in a T-shape to a first base material may include the first base material including a first flat portion, a second flat portion, and curved portions formed between the first flat portion and the second flat portion; the second base material in which a bent portion is formed at an end of a main body portion such that the bent portion is disposed to face the curved portions of the first base material; and a bead disposed between the curved portions of the first base material and the bent portion of the second base material.

First claim

What is claimed is:

1. A welding structure of a T-shape welding joint in which a second base material is welded in a T-shape to a first base material, the welding structure comprising:
the first base material including a first flat portion, a second flat portion, and curved portions formed between the first flat portion and the second flat portion;
the second base material including a main body portion and a bent portion, wherein the bent portion is formed at an end of the main body portion so that the bent portion is disposed to face the curved portions of the first base material; and
a bead disposed between the curved portions of the first base material and the bent portion of the second base material,
wherein the first base material is disposed along a gravitational direction,
wherein the second base material is disposed in a direction perpendicular to the gravitational direction, and
wherein the bent portion of the second base material is bent downwardly along the gravitational direction.

2. The welding structure of claim 1 , wherein the bent portion of the second base material is bent downwardly with respect to the main body portion.

3. The welding structure of claim 1 ,
wherein the second base material has a vertical portion formed from an end of the bent portion to be in parallel to the first base material,
wherein the first flat portion of the first base material meets the vertical portion of the second base material, and
wherein the second flat portion extends above the first flat portion with the curved portions intervening between the first flat portion and the second flat portion.

4. The welding structure of claim 3 ,
wherein the first flat portion and the second flat portion are formed in parallel to each other while being spaced from each other by a predetermined offset amount u.

5. The welding structure of claim 4 , wherein the predetermined offset amount u and a thickness t of the first base material satisfy the following Relational Expression 1:
u≥ 0.3× t.   [Relational Expression 1]

6. The welding structure of claim 3 , wherein the curved portions formed in the first base material include:
a first curved portion extending while being curved from the first flat portion at a first curvature R1;
a second curved portion extending and connected to the second flat portion while being curved from the first curved portion at a second curvature R2.

7. The welding structure of claim 6 , wherein the first curvature R1 of the first curved portion and the second curvature R2 of the second curved portion satisfy the following Relational Expressions 2 and 3, respectively, in relation to a thickness t of the first base material:
R 1≥2× t   [Relational Expression 2]

R 2≥ t.   [Relational Expression 3]

8. The welding structure of claim 6 ,
wherein the first curved portion is curved to be convex toward the second base material, and
wherein the second curved portion is curved to be concave toward the second base material.

9. The welding structure of claim 6 ,
wherein the first curved portion is curved to be convex toward the second base material from the first flat portion, and
wherein the second curved portion is curved from the first flat portion to be concave toward the second base material.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Hwashin Co Ltd

Inventors

• Yun Young Dong
• Jang Yong Min

Classifications

• B32B7/00

  Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers · CPC title

• B23K33/002 Primary

  Crimping or bending the workpieces at the joining area · CPC title

• B29C66/20

  particular design of the joint lines, e.g. of the weld lines · CPC title

• B23K33/00 Primary

  Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby · CPC title

• B62D25/00

  Superstructure {or monocoque structure} sub-units; Parts or details thereof not otherwise provided for {(having impact absorbing means B62D21/15; running-boards, steps, or the like as superstructure sub-unit B60R3/00)} · CPC title