JPS62234684A - Laser welded joint structure - Google Patents

Laser welded joint structure

Info

Publication number
JPS62234684A
JPS62234684A JP61074234A JP7423486A JPS62234684A JP S62234684 A JPS62234684 A JP S62234684A JP 61074234 A JP61074234 A JP 61074234A JP 7423486 A JP7423486 A JP 7423486A JP S62234684 A JPS62234684 A JP S62234684A
Authority
JP
Japan
Prior art keywords
cylinder
lid
cap
joint
collar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP61074234A
Other languages
Japanese (ja)
Inventor
Tomio Unno
海野 富男
Masayoshi Hashiura
橋浦 雅義
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP61074234A priority Critical patent/JPS62234684A/en
Publication of JPS62234684A publication Critical patent/JPS62234684A/en
Pending legal-status Critical Current

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  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To improve joint strength by forming a collar to the outside periphery of a projecting part of a cap, pressing the cap and cylinder to each other via a taper, and executing welding. CONSTITUTION:The collar (a) is formed to the outside periphery of the projecting part 1A on the bottom surface of the cap 1 and the tapered part 4 is formed to the joint surfaces of the lower part of the collar and the cylinder 2 at the time of joining the cap 1 and the cylinder 2 by laser welding. The thickness of the collar part (a) is made the same as the thickness of the cylinder 2 in this case. The cap 1 and the cylinder 2 pressed to each other via the tapered part 4 are welded by the irradiation of laser light (b), then the collar part (a) melts and flows gradually along a slope 4 until the molten metal solidifies by filling the space 5 on the inside of the projecting part 1A and the cylinder 2. The secure welded joint is thus formed and the joint strength between the cap 1 and the cylinder 2 is improved.

Description

【発明の詳細な説明】 〔参業上の利用分野〕 本発明はレーザ溶接の継手形状に係り、特に、二重構造
の円筒と蓋の接合に好適な溶接継手形状に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a joint shape for laser welding, and particularly to a weld joint shape suitable for joining a double-structured cylinder and a lid.

〔従来の技術〕[Conventional technology]

二重円筒構造物の溶接継手は内円筒と外円筒と上、下蓋
の主要部品とからなり、それぞれに、蓋と円筒を組合せ
た継手である。これらの継手は部品の加工法により、そ
の寸法精度は多種雑多である。特に、量産品となるとプ
レス成形品が多く使用されている。しかし、溶接継手の
ギャップを少なくし、接触を良くする配慮がされていな
かった。
A welded joint for a double cylindrical structure consists of the main parts of an inner cylinder, an outer cylinder, and an upper and lower cover, and is a joint that combines the lid and cylinder for each. The dimensional accuracy of these joints varies depending on the processing method of the parts. In particular, press-formed products are often used for mass-produced products. However, no consideration was given to reducing the gap between welded joints and improving contact.

なお、この種の継手形状として関連するものには特公昭
55−11438号、実公昭59−27994号公報が
挙げられる。
Note that related joint shapes of this type include Japanese Patent Publication No. 55-11438 and Japanese Utility Model Publication No. 59-27994.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記従来技術はレーザ光で溶融する継手部の形状が寸法
精度によってギャップを形成して良好な溶接部を形成す
ることが困難な場合が多い。例えば、第4図に示すよう
に蓋1の外径D1が小さいと蓋1は筒2に落込むし、真
円から外した楕円でないと筒部で支持できないので、継
手の接合線上をうまくレーザ光が照射できない。また、
蓋1や筒2の継手部は完全に接触していることが少なく
、必ずギャップCがあり、そのギャップを溶湯が完全に
埋めることが出来ずに、へこんだ溶接ビートや、片よっ
たビードを形成して良好な溶接部が得られない。
In the above-mentioned conventional technology, it is often difficult to form a good welded part due to the dimensional accuracy of the shape of the joint part to be melted by the laser beam to form a gap. For example, as shown in Fig. 4, if the outer diameter D1 of the lid 1 is small, the lid 1 will fall into the cylinder 2, and if it is not an elliptical shape that is not a perfect circle, it cannot be supported by the cylinder, so the laser beam can be used to carefully align the joining line of the joint. Light cannot be irradiated. Also,
The joints of the lid 1 and cylinder 2 are rarely in complete contact, and there is always a gap C, and the molten metal cannot completely fill the gap, resulting in dented welding beads and uneven beads. A good weld cannot be obtained.

本発明の目的はギャップに埋まる溶inを多くするため
に継手につば状突起を付け、接触面を多くするために蓋
と筒をテーパ接触させて均等に加熱することにある。
An object of the present invention is to add a flange-like projection to the joint in order to increase the amount of melt filling the gap, and to bring the lid and the cylinder into tapered contact in order to increase the contact surface, thereby heating the joint evenly.

〔問題点を解決するための手段〕[Means for solving problems]

上記目的は継手部につば部を設け、これとテーパ一部の
組合せにより達成される。この解決手段の詳細を第2図
により説明する。第2図はレーザ溶接により組立接合す
る二重円筒容器を示す。容器は非密封式で蓋1と筒2と
を接合するものである。第3図は溶接継手部の部分拡大
断面図を示す。
The above object is achieved by providing a flange on the joint and combining this with a portion of the taper. The details of this solution will be explained with reference to FIG. FIG. 2 shows a double cylindrical container assembled and joined by laser welding. The container is of a non-sealing type and has a lid 1 and a tube 2 joined together. FIG. 3 shows a partially enlarged sectional view of the welded joint.

第4図は従来の継手形状の部分拡大断面図である。FIG. 4 is a partially enlarged sectional view of a conventional joint shape.

溶接は蓋1とケース2とを溶融接合するため両者の接触
面をねらってレーザが照射され(矢印B)、溶融される
。しかし、第4図で示すように、蓋1とケース2間にギ
ャップ(矢印C)があると、溶湯が落込んでギャップを
埋める接合ができない。
In the welding process, the lid 1 and the case 2 are fused and joined together by irradiating a laser beam (arrow B) aiming at the contact surface between the two, thereby melting the lid 1 and the case 2. However, as shown in FIG. 4, if there is a gap (arrow C) between the lid 1 and the case 2, the molten metal will fall and it will not be possible to join to fill the gap.

そこで、第3図矢印aに示すつば部を形成し、つば部か
ら溶融させると、つば部の溶湯がギャップを埋めて良好
な接合ができる。また、テーパ部eは蓋1と筒2との接
触面を増すとともに一定の高さを保持できるので熱のバ
ランスが向上し、蓋1と筒2の均等加熱を助けて良好な
接合ができる。
Therefore, by forming a flange shown by arrow a in FIG. 3 and melting from the flange, the molten metal from the flange fills the gap and provides a good bond. Further, the tapered portion e increases the contact surface between the lid 1 and the cylinder 2 and maintains a constant height, thereby improving the thermal balance and helping the lid 1 and the cylinder 2 to be heated evenly, thereby achieving a good bonding.

それ故、上記目的はっばとテーパ部の形成により達成さ
れる。
Therefore, the above object is achieved by forming the tapered portion.

〔作用〕[Effect]

溶接継手に付加したつば部とテーパ部は前述のように、
レーザ光を照射することによって熱を蓋1と筒2に伝え
、溶融させることによってギャップを埋るようになるの
でギャップがあっても良好な溶接継手が得られる。
As mentioned above, the flange and tapered part added to the welded joint are
By irradiating the laser beam, heat is transmitted to the lid 1 and the cylinder 2, and the gaps are filled by melting them, so that even if there are gaps, a good welded joint can be obtained.

〔実施例〕〔Example〕

以下、本発明の実施例を第1図により説明する。 Embodiments of the present invention will be described below with reference to FIG.

構造は概略マグネットコイル3をケース2ど蓋1で収納
する円筒状容器である。レーザ溶接はケース2と蓋1を
接合するときに継手強さを得る目的から本発明の溶接継
手形状を使用して、矢印dで示すように、蓋】とケース
2との接触部にレーザ光が照射されるように施工してい
る。この時の継手形状はっは部外径がケース2の厚さ部
の1/2の外径、厚さはケース2の厚さの172厚さと
し、つば部a全体が溶融する寸法とした。それ故、蓋1
とケースとの間は約0.5mmのギャップを生じたが、
マグネットコイル3の収納及び蓋の取付は作業が容易に
なった。それでも、ギャップの部分は溶湯が埋まり十分
な継手強さを得ることができた。本実施例によれば、つ
ば部及びテーパ部の付加により良好な溶接部の得られる
効果がある。
The structure is generally a cylindrical container in which a magnetic coil 3 is housed in a case 2 and a lid 1. Laser welding uses the welding joint shape of the present invention for the purpose of obtaining joint strength when joining the case 2 and the lid 1, and as shown by arrow d, a laser beam is applied to the contact area between the lid and the case 2. It is constructed in such a way that it is irradiated with light. At this time, the joint shape was such that the outer diameter of the outer diameter was 1/2 of the thickness of the case 2, the thickness was 172 mm thick than the thickness of the case 2, and the entire flange a was melted. Therefore, lid 1
There was a gap of about 0.5mm between the case and the
The work of storing the magnet coil 3 and attaching the lid has become easier. Even so, the gap was filled with molten metal and sufficient joint strength was achieved. According to this embodiment, a good welded portion can be obtained by adding the flange portion and the tapered portion.

また、第2図に示すように、蓋1にレーザ光すを照射す
れば、蓋1とケース2の溶接物はっは部aにたまり、傾
斜面4を介して空間5方向に流れるが、溶接物は傾斜面
4を除々に流れ、突出物IAとケース内側との間の空間
5で固まり、落下しないことが、実験上わかった。従っ
て、ケース内が溶融物で汚染することがない。また、突
出物IAはケース内面方向に傾斜していると更によい。
Furthermore, as shown in FIG. 2, if the lid 1 is irradiated with a laser beam, the welded material between the lid 1 and the case 2 will accumulate in part a and flow toward the space 5 via the inclined surface 4. It was found through experiments that the welded material gradually flows down the inclined surface 4, solidifies in the space 5 between the protrusion IA and the inside of the case, and does not fall. Therefore, the inside of the case is not contaminated with melted material. Further, it is even better if the protrusion IA is inclined toward the inner surface of the case.

〔発明の効果〕〔Effect of the invention〕

本発明によればギャップをもつ二重円筒構造物の溶接継
手でも溶湯に溶接ができるので継手部のギャップを埋め
た溶接継手を形成でき、強度の高い溶接継手が容易に得
られる。
According to the present invention, even a welded joint of a double cylindrical structure having a gap can be welded to molten metal, so a welded joint can be formed that fills the gap in the joint, and a welded joint with high strength can be easily obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例のマグネットケースの断面図
、第2図は本発明の溶接継手二重構造容器の断面図、第
3図は第2図の継手部拡大断面図、第4図は従来の継手
形状を示す二重構造容器の断面図である。 躬3図 も4図
Fig. 1 is a sectional view of a magnet case according to an embodiment of the present invention, Fig. 2 is a sectional view of a welded joint double structure container of the present invention, Fig. 3 is an enlarged sectional view of the joint part of Fig. 2, and Fig. 4 The figure is a sectional view of a double-walled container showing a conventional joint shape. 3 and 4 figures

Claims (1)

【特許請求の範囲】 1、二重構造円筒物の蓋と筒のレーザ溶接において、 円筒に乗せてレーザ溶接する前記段蓋の構造が前記蓋の
下部に突出た円筒状の突起部で前記蓋を前記円筒の内側
に挿入でき、前記突起部の外周に円筒の厚さと同じつば
を形成して、前記つば部の表面からレーザ溶接と可能と
したことを特徴とするレーザ溶接継手構造。2、特許請
求の範囲第1項において、接合する前記円筒の内側に傾
斜させたテーパ部と前記蓋にも対をなすテーパを設け、
両テーパを介して前記蓋と前記円筒の密着を増したこと
を特徴とするレーザ溶接継手構造。
[Claims] 1. In the laser welding of the lid and tube of a double-structured cylindrical object, the structure of the stepped lid, which is placed on the cylinder and laser welded, has a cylindrical protrusion protruding from the bottom of the lid. A laser welded joint structure, characterized in that the projection can be inserted into the inside of the cylinder, a flange having the same thickness as the cylinder is formed on the outer periphery of the protrusion, and laser welding can be performed from the surface of the flange. 2. In claim 1, a tapered portion inclined inwardly of the cylinder to be joined and the lid are also provided with a pair of tapers,
A laser welded joint structure characterized in that the close contact between the lid and the cylinder is increased through both tapers.
JP61074234A 1986-04-02 1986-04-02 Laser welded joint structure Pending JPS62234684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61074234A JPS62234684A (en) 1986-04-02 1986-04-02 Laser welded joint structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61074234A JPS62234684A (en) 1986-04-02 1986-04-02 Laser welded joint structure

Publications (1)

Publication Number Publication Date
JPS62234684A true JPS62234684A (en) 1987-10-14

Family

ID=13541270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61074234A Pending JPS62234684A (en) 1986-04-02 1986-04-02 Laser welded joint structure

Country Status (1)

Country Link
JP (1) JPS62234684A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012171692A1 (en) * 2011-06-17 2012-12-20 Robert Bosch Gmbh Housing arrangement and method for producing a sealed welded connection of a housing component to an add-on part
JP2013091085A (en) * 2011-10-26 2013-05-16 Gs Yuasa Corp Welding method of metal container, metal container, energy storage element, and energy storage module
JP2015188901A (en) * 2014-03-27 2015-11-02 プライムアースEvエナジー株式会社 Laser welding equipment, laser welding method, and battery case
JP2016103490A (en) * 2016-01-27 2016-06-02 日立オートモティブシステムズ株式会社 Square secondary battery
EP3675208A4 (en) * 2017-12-20 2020-12-09 LG Chem, Ltd. Battery module and battery pack including same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012171692A1 (en) * 2011-06-17 2012-12-20 Robert Bosch Gmbh Housing arrangement and method for producing a sealed welded connection of a housing component to an add-on part
JP2013091085A (en) * 2011-10-26 2013-05-16 Gs Yuasa Corp Welding method of metal container, metal container, energy storage element, and energy storage module
JP2015188901A (en) * 2014-03-27 2015-11-02 プライムアースEvエナジー株式会社 Laser welding equipment, laser welding method, and battery case
JP2016103490A (en) * 2016-01-27 2016-06-02 日立オートモティブシステムズ株式会社 Square secondary battery
EP3675208A4 (en) * 2017-12-20 2020-12-09 LG Chem, Ltd. Battery module and battery pack including same
US11677115B2 (en) 2017-12-20 2023-06-13 Lg Energy Solution, Ltd. Battery module and battery pack including same

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