JPH0999374A - Spot welding equipment - Google Patents
Spot welding equipmentInfo
- Publication number
- JPH0999374A JPH0999374A JP7259599A JP25959995A JPH0999374A JP H0999374 A JPH0999374 A JP H0999374A JP 7259599 A JP7259599 A JP 7259599A JP 25959995 A JP25959995 A JP 25959995A JP H0999374 A JPH0999374 A JP H0999374A
- Authority
- JP
- Japan
- Prior art keywords
- welded
- spot
- plates
- external force
- pair
- 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
Links
Landscapes
- Body Structure For Vehicles (AREA)
- Resistance Welding (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、一対の被溶接板の
それぞれの端縁部分を互いに重ね合わせてスポット溶接
したスポット溶接構造に関する。更に詳しくは、スポッ
ト溶接箇所の疲労強度を向上させるスポット溶接構造に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spot welding structure in which respective edge portions of a pair of plates to be welded are superposed on each other and spot welded. More specifically, the present invention relates to a spot welding structure that improves the fatigue strength of spot welding points.
【０００２】[0002]
【従来の技術】従来、一対の被溶接板のそれぞれの端縁
部分を互いに重ね合わせて溶接する方法についてスポッ
ト溶接による方法が知られている。スポット溶接は抵抗
溶接の一種であって、図５に示すように、被溶接板１
１，１２を対向する電極１３ａ，１３ｂによって加圧
し、大電流の短時間通電による抵抗発熱を利用して接合
するものである。このような原理により溶接されるため
に、スポット溶接は溶接速度が速く生産性が良く、溶接
パラメータが制御しやすく自動化に適する特徴を有す
る。またスポット溶接は溶接棒のような消耗資材を必要
とせず低コストであり、接合部の板合わせに高加工精度
を必要とせず、溶接変形が少なく品質が安定している等
の優れた特徴も有している。一方、スポット溶接は被溶
接材料を電極による加圧及び大電流の短時間通電による
抵抗発熱により接合するため、そのスポット溶接箇所
（ナゲット）の大きさには限界がありスポット溶接する
箇所の接合強度に応じてスポット溶接箇所を複数箇所設
け、その数を増加又は減少させて要求に応じた接合強度
を満足させている。2. Description of the Related Art Conventionally, a spot welding method has been known as a method of overlapping and welding the respective edge portions of a pair of plates to be welded. Spot welding is a type of resistance welding, and as shown in FIG.
The electrodes 1 and 12 are pressed against each other by the opposing electrodes 13a and 13b, and joined by utilizing the resistance heat generated by a large current for a short time. Since welding is performed according to such a principle, spot welding has features of high welding speed, high productivity, easy control of welding parameters, and suitable for automation. In addition, spot welding does not require consumable materials such as welding rods, is low cost, does not require high processing accuracy for plate matching at the joint, has few welding deformations, and has excellent characteristics such as stable quality. Have On the other hand, in spot welding, the materials to be welded are joined by resistance heating due to pressure applied by the electrode and short-time application of a large current, so there is a limit to the size of the spot welding spot (nugget) and the joint strength at the spot weld spot. According to the above, a plurality of spot welding points are provided and the number thereof is increased or decreased to satisfy the required joint strength.
【０００３】[0003]
【発明が解決しようとする課題】しかし、複数のスポッ
ト溶接箇所により接合強度を満足させた場合に、接合後
における部材の外力による振動衝撃等が均一に複数の接
合箇所に加わらない場合がある。即ち、接合された部材
の形状又は使用箇所により、ある特定のスポット溶接箇
所にのみ外力による応力が集中し、その応力が集中した
スポット溶接箇所が破損することがある。このように複
数のスポット溶接箇所の内の一部が破損した場合には、
他のスポット溶接箇所に順次応力が集中して結果的にス
ポット溶接箇所の疲労強度が低下して接合箇所全体が破
損する恐れがある。この点を解消するために、被溶接板
の板厚を増加させ、スポット溶接箇所を更に増加させる
ことや、スポット溶接による接合をボルト等の他の接合
方法に変更することも考えられる。しかし、これらの方
法では製品の質量が増加し、また製作工数の増加に伴い
製品の単価を押上げる不具合がある。本発明の目的は、
スポット溶接箇所への応力集中を防止してスポット溶接
箇所の疲労強度を向上させるスポット溶接構造を提供す
ることにある。However, when the joint strength is satisfied by a plurality of spot welding points, there are cases where the vibration and the like due to the external force of the members after the joining are not uniformly applied to the plurality of joint points. That is, depending on the shape of the joined members or the use location, the stress due to the external force concentrates only on a specific spot welding location, and the spot welding location on which the stress concentrates may be damaged. If some of the spot welds are damaged in this way,
The stress is sequentially concentrated on other spot welded spots, and as a result, the fatigue strength of the spot welded spots may be reduced and the entire welded spot may be damaged. In order to eliminate this point, it is conceivable to increase the plate thickness of the plate to be welded to further increase the spot welding spots, or to change the joining by spot welding to another joining method such as a bolt. However, these methods have a problem that the mass of the product is increased and the unit price of the product is increased due to the increase of manufacturing man-hours. The purpose of the present invention is
It is an object of the present invention to provide a spot welding structure that prevents stress concentration on a spot welding portion and improves fatigue strength of the spot welding portion.
【０００４】[0004]
【課題を解決するための手段】請求項１に係る発明は、
図１、図６及び図８に示すように、一対の被溶接板１
１，１２，２１，２２，３１，３２をそれぞれの端縁部
分１１ａ，１２ａ，２１ａ，２２ａ，３１ａ，３２ａを
互いに重ね合わせた状態で端縁部分１１ａ，１２ａ，２
１ａ，２２ａ，３１ａ，３２ａをスポット溶接１４した
スポット溶接構造の改良である。その特徴ある構成は、
一対の被溶接板１１，１２，２１，２２，３１，３２の
いずれか一方１２，２１，３１又は双方のスポット溶融
箇所１４の近傍に断面が略半円状に膨んだ外力吸収用膨
出部１２ｂ，２１ｂ，３１ｂが形成されたところにあ
る。The invention according to claim 1 is
As shown in FIGS. 1, 6 and 8, a pair of welded plates 1
1, 12, 21, 22, 31, 32 are edge portions 11a, 12a, 2 in a state where respective edge portions 11a, 12a, 21a, 22a, 31a, 32a are superposed on each other.
This is an improvement of the spot welding structure in which spot welding 1a, 22a, 31a, 32a is performed. Its characteristic configuration is
A bulge for absorbing an external force whose cross section bulges in a substantially semi-circular shape in the vicinity of one of the pair of welded plates 11, 12, 21, 22, 31, 32, 12, 21, 31 or both spot melting points 14. It is where the parts 12b, 21b, 31b are formed.
【０００５】外力吸収用膨出部１２ｂ，２１ｂ，３１ｂ
は断面が略半円状に膨み、かつ外力により生じる振動や
衝撃力を吸収又は軽減可能であればその形成位置はどの
ような位置に形成してもよい。但し、その形成位置はス
ポット溶接箇所１４の近傍であって、外力による振動や
衝撃力が伝搬する方向に対し、その伝搬を遮るようにそ
の方向に対して垂直方向に被溶接板１１，１２，２１，
２２，３１，３２に設けることが好ましい。また、外力
吸収用膨出部１２ｂ，２１ｂ，３１ｂは全てのスポット
溶接箇所に設けることを必要とせず、スポット溶接され
る箇所の動作又は形状により特に外力による応力が集中
するスポット溶接箇所にのみ設けることによりそのスポ
ット溶接箇所の破損を防止することができる。External force absorbing bulges 12b, 21b, 31b
The section may be formed at any position as long as it has a substantially semicircular cross section and can absorb or reduce vibration or impact force generated by an external force. However, the formation position is in the vicinity of the spot welded portion 14, and in the direction in which vibration or impact force due to an external force propagates, the plates to be welded 11, 12, 21,
It is preferable to provide them in 22, 31, 32. Further, the external force absorbing bulges 12b, 21b, 31b do not need to be provided at all spot welding points, but are provided only at spot welding points where stress due to external force is concentrated due to the operation or shape of the spot welded points. As a result, it is possible to prevent the spot welded portion from being damaged.
【０００６】請求項２に係る発明は、図１に示すよう
に、請求項１に係る発明において、外力吸収用膨出部１
２ｂが一対の被溶接板１１，１２のいずれか一方１２又
は双方の重ね合わせた部分以外の端縁部分１１ａに沿っ
て形成されたものである。請求項３に係る発明は、図６
に示すように、請求項１記載の発明において、外力吸収
用膨出部２１ａが一対の被溶接板２１，２２のいずれか
一方２１又は双方の重ね合わせた部分にスポット溶接箇
所１４，１４を囲むように形成されたものである。これ
によりスポット溶接箇所の目印とすることもできる。請
求項４に係る発明は、図８に示すように、請求項３に係
る発明において、外力吸収用膨出部３１ｂが一対の被溶
接板３１，３２のいずれか一方３１又は双方の端縁部分
３１ａに臨むものである。外力吸収用膨出部１２ｂ，２
１ｂ，３１ｂは、被溶接部材１１，１２，２１，２２，
３１，３２に加わる外力を膨出部１２ｂ，２１ｂ，３１
ｂが吸収又は軽減させ、外力吸収用膨出部１２ｂ，２１
ｂ，３１ｂが近傍に設けられたスポット溶接箇所１４に
応力集中が起こることを防止する。As shown in FIG. 1, the invention according to claim 2 is the same as the invention according to claim 1, in which a bulging portion 1 for absorbing an external force is provided.
2b is formed along one of the pair of plates 11 and 12 to be welded 12 or along the edge portion 11a other than the overlapped portions of both. The invention according to claim 3 is shown in FIG.
As shown in FIG. 1, in the invention according to claim 1, the external force absorbing bulging portion 21 a surrounds the spot welding points 14 and 14 at either one of the pair of plates 21 and 22 to be welded or at the overlapping portion thereof. It is formed as follows. As a result, it can be used as a mark for spot welding spots. As shown in FIG. 8, the invention according to claim 4 is the invention according to claim 3, wherein the external force absorbing bulging portion 31b is either one of the pair of welded plates 31, 32 or both edge portions thereof. 31a. External force absorbing bulges 12b, 2
1b and 31b are members to be welded 11, 12, 21, 22, and 22.
External force applied to 31, 32 is applied to the bulging portions 12b, 21b, 31.
b is absorbed or reduced, and external force absorbing bulges 12b and 21
It prevents the stress concentration from occurring in the spot welded portion 14 where b and 31b are provided in the vicinity.
【０００７】[0007]
【発明の実施の形態】次に本発明の実施の形態を図面に
基づいて詳しく説明する。図１及び図２に示すように、
スポット溶接される一対の被溶接板１１，１２はそれぞ
れの端縁部分１１ａ，１２ａを互いに重ね合わせた状態
でその端縁部分１１ａ，１２ａがスポット溶接される。
スポット溶接は図５に示すように、互いに重ね合わせた
端縁部分１１ａ，１２ａを対向する電極１３ａ，１３ｂ
によって加圧してその電極１３ａ，１３ｂの間に溶接ト
ランス１３ｃにより大電流を短時間通電することにより
行う。電極１３ａ，１３ｂにより加圧された端縁部分１
１ａ，１２ａの接触面には大電流の通電に伴う抵抗によ
る発熱が生じ、接触面の一部は発熱により互いに溶融し
て通電後硬化して碁石状のスポット溶接箇所（ナゲッ
ト）１４を生じる。このスポット溶接箇所１４をこの例
では５箇所等間隔にかつ直線状に設けることにより一対
の被溶接板１１，１２の端縁部分１１ａ，１２ａは互い
に接合される。Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIGS. 1 and 2,
The pair of plates to be welded 11 and 12 to be spot-welded are spot-welded at their end portions 11a and 12a in a state where the respective end-edge portions 11a and 12a are superposed on each other.
In spot welding, as shown in FIG. 5, electrodes 13a and 13b facing each other with their overlapping edge portions 11a and 12a are formed.
It is performed by applying a large current for a short time between the electrodes 13a and 13b by the welding transformer 13c. Edge portion 1 pressed by electrodes 13a and 13b
Heat is generated on the contact surfaces of 1a and 12a due to resistance associated with the energization of a large current, and part of the contact surfaces is melted by the heat generation and hardened after energization to form a spot-shaped spot welding portion (nugget) 14. In this example, the spot welding points 14 are linearly provided at five equal intervals so that the edge portions 11a and 12a of the pair of plates 11 and 12 to be welded are joined to each other.
【０００８】図１及び図２に戻って、一対の被溶接板１
１，１２の内の一方の板１２のスポット溶融箇所１４の
近傍に断面が略半円状に膨んだ外力吸収用膨出部１２ｂ
が形成される。この例における外力吸収用膨出部１２ｂ
は一対の被溶接板１１，１２の一方の板１２に設けら
れ、他方の被溶接板１１の端縁部分１１ａに沿って形成
される。この例では他方の被溶接板１１の端縁部分１１
ａが直線状であることから、一方の被溶接板１２に設け
られる膨出部１２ｂはその幅方向の一方から他方まで連
続した直線状に設けられ、この膨出部１２ｂは被溶接板
１２を成形する際のプレス加工において一体的に形成さ
れる。Returning to FIGS. 1 and 2, the pair of welded plates 1 is welded.
An external force absorbing bulging portion 12b having a substantially semicircular cross section in the vicinity of the spot melting point 14 on one of the plates 1 and 12
Is formed. External force absorbing bulge 12b in this example
Is provided on one plate 12 of the pair of welded plates 11 and 12, and is formed along the edge portion 11a of the other welded plate 11. In this example, the edge portion 11 of the other welded plate 11
Since a is linear, the bulging portion 12b provided on one of the welded plates 12 is provided in a continuous linear manner from one side to the other in the width direction thereof. It is integrally formed in the press working at the time of molding.
【０００９】このように構成されたスポット溶接構造で
は、被溶接板１２に加わる外力を膨出部１２ｂが吸収又
は軽減させる。例えば図３に示すように、外力により一
方の被溶接板１２に板の延長方向に直交する方向の振動
が生じ、その振動が被溶接板１２を伝搬してスポット溶
接箇所１４に向うばあい、その振動はスポット溶接箇所
１４に到達する以前に膨出部１２ｂに伝搬し、その振動
は図の二点鎖線で示すように、膨出部１２ｂの変形によ
り吸収される。また、一方の被溶接部材１２に加わる外
力により図４の実線矢印で示すような被溶接板１２の延
長方向に圧縮又は引張り方向の振動又は衝撃が生じたば
あい、その振動又は衝撃は被溶接板１２を伝搬してスポ
ット溶接箇所１４に向い、スポット溶接箇所１４に到達
する以前に膨出部１２ｂに伝搬し、その振動又は衝撃は
図４の二点鎖線で示すように、膨出部１２ｂの変形によ
り軽減される。In the spot welding structure thus constructed, the bulging portion 12b absorbs or reduces the external force applied to the plate 12 to be welded. For example, as shown in FIG. 3, when an external force causes a vibration in a direction orthogonal to the extension direction of the plate 12 to be welded, and the vibration propagates through the plate 12 to be welded and goes to the spot welding spot 14, The vibration propagates to the bulging portion 12b before reaching the spot welded portion 14, and the vibration is absorbed by the deformation of the bulging portion 12b as shown by the chain double-dashed line in the figure. When vibration or impact in the compression or tension direction occurs in the extension direction of the plate 12 to be welded as shown by the solid line arrow in FIG. 4 due to the external force applied to one member 12 to be welded, the vibration or impact is not generated. Propagating through the plate 12 toward the spot welded portion 14, propagates to the bulging portion 12b before reaching the spot welded portion 14, and the vibration or impact thereof is as shown by the two-dot chain line in FIG. It is reduced by the deformation of.
【００１０】図６及び図７に本発明の別の実施の形態を
示す。上記符号と同一符号は同一部品を表す。スポット
溶接される一対の被溶接板２１，２２はそれぞれの端縁
部分２１ａ，２２ａを互いに重ね合わせた状態でその端
縁部分２１ａ，２２ａがスポット溶接される。このスポ
ット溶接箇所１４をこの例では５箇所設けることにより
一対の被溶接板２１，２２の端縁部分２１ａ，２２ａは
互いに接合される。一対の被溶接板２１，２２の内の一
方の板２１のスポット溶融箇所１４の近傍に断面が略半
円状に膨んだ外力吸収用膨出部２１ｂが形成され、この
例における外力吸収用膨出部２１ｂは一対の被溶接板２
１，２２の一方の重ね合わせた部分２１ａにスポット溶
接箇所１４を囲むように形成される。一方の被溶接板２
１に設けられる膨出部２１ｂはそのスポット溶接箇所１
４と所定の距離を置いた円状に連続して設けられ、端縁
部分２１ａ近傍に形成される２箇所のスポット溶接箇所
に設けられる。この膨出部２１ｂは被溶接板２１を成形
する際のプレス加工において一体的に形成される。この
ように構成されたスポット溶接構造における動作は上述
した動作と同様であるので繰返しての説明を省略する。6 and 7 show another embodiment of the present invention. The same reference numerals as those used above represent the same parts. The pair of plates to be welded 21 and 22 to be spot-welded are spot-welded at their end portions 21a and 22a in a state where the respective end-edge portions 21a and 22a are overlapped with each other. By providing five spot welding points 14 in this example, the edge portions 21a and 22a of the pair of plates to be welded 21 and 22 are joined to each other. An external force absorbing bulge portion 21b having a substantially semicircular cross section is formed in the vicinity of the spot melting point 14 of one plate 21 of the pair of plates to be welded 21, 22 for absorbing external force in this example. The bulging portion 21b is a pair of welded plates 2
It is formed so as to surround the spot welded portion 14 on one of the superposed portions 21 a of the first and second parts 22. One welded plate 2
The swelling portion 21b provided on the No. 1 is the spot welding point 1
4 are provided continuously in a circular shape with a predetermined distance from each other, and are provided at two spot welding points formed near the edge portion 21a. The bulging portion 21b is integrally formed by press working when forming the plate 21 to be welded. The operation of the spot welding structure configured as described above is the same as the above-mentioned operation, and thus the repeated description will be omitted.
【００１１】図８及び図９に本発明の更に別の実施の形
態を示す。上記符号と同一符号は同一部品を表す。スポ
ット溶接される一対の被溶接板３１，３２はそれぞれの
端縁部分３１ａ，３２ａを互いに重ね合わせた状態でそ
の端縁部分３１ａ，３２ａがスポット溶接される。この
スポット溶接箇所１４をこの例では５箇所等間隔にかつ
直線状に設けることにより一対の被溶接板３１，３２の
端縁部分３１ａ，３２ａは互いに接合される。一対の被
溶接板３１，３２の内の一方の板３１のスポット溶融箇
所１４の近傍に断面が略半円状に膨んだ外力吸収用膨出
部３１ｂが形成され、この例における外力吸収用膨出部
３１ｂは外力吸収用膨出部３１ｂが一対の被溶接板３
１，３２の一方の板３１の端縁部分３１ａに臨むように
形成される。一方の被溶接板３１に設けられる膨出部１
２ｂはその縁部３１ｃから始まりスポット溶接箇所１４
を囲むように半円状に曲がり、再び縁部３１ｃに至るよ
うに連続して設けられ、端縁近傍に形成される５箇所の
スポット溶接箇所の内中央のスポット溶接箇所１４にの
み設けられる。この膨出部３１ｂは被溶接板３１を成形
する際のプレス加工において一体的に形成される。この
ように構成されたスポット溶接構造における動作は上述
した動作と同様であるので繰返しての説明を省略する。
この溶接構造によれば、被溶接板３１，３２のスポット
溶接される端縁部分３１ａ，３２ａの重ね合わせ量を小
さくすることができ、被溶接板３１，３２の小型化が可
能になる。FIGS. 8 and 9 show still another embodiment of the present invention. The same reference numerals as those used above represent the same parts. The pair of plates to be welded 31 and 32 to be spot-welded are spot-welded at their end portions 31a and 32a in a state where the respective end-edge portions 31a and 32a are superposed on each other. In this example, the spot-welded portions 14 are linearly provided at five equal intervals, so that the edge portions 31a and 32a of the pair of plates to be welded 31 and 32 are joined to each other. An external force absorbing bulge portion 31b having a substantially semicircular cross section is formed in the vicinity of the spot melting portion 14 of one of the pair of plates to be welded 31, 32 for absorbing external force in this example. The bulging portion 31b has the bulging portion 31b for absorbing an external force and has a pair of welded plates 3
The first and second plates 31 and 32 are formed so as to face the edge portion 31a of the plate 31. Bulging part 1 provided on one plate 31 to be welded
2b starts from its edge 31c and is spot welded 14
It is bent in a semi-circular shape so as to surround the edge, is continuously provided again to reach the edge portion 31c, and is provided only at the spot welding spot 14 at the center of the five spot welding spots formed near the edge. The bulging portion 31b is integrally formed by press working for forming the plate 31 to be welded. The operation of the spot welding structure configured as described above is the same as the above-mentioned operation, and thus the repeated description will be omitted.
According to this welding structure, it is possible to reduce the overlapping amount of the edge portions 31a and 32a of the welded plates 31 and 32 to be spot-welded, and to downsize the welded plates 31 and 32.
【００１２】[0012]
【発明の効果】以上述べたように、本発明によれば、一
対の被溶接板のいずれか一方又は双方のスポット溶融箇
所の近傍に断面が略半円状に膨んだ外力吸収用膨出部を
形成したので、外力吸収用膨出部が被溶接部材に加わる
外力を吸収又は軽減させ、スポット溶接箇所に応力集中
が起こることを防止する。この結果、スポット溶接箇所
の疲労強度を向上させることができる。外力吸収用膨出
部を一対の被溶接板のいずれか一方又は双方の重ね合わ
せた部分以外の端縁部分に沿って形成すれば、特に外力
吸収用膨出部を形成するスポット溶接箇所を特定する必
要がない。また、外力吸収用膨出部を一対の被溶接板の
いずれか一方又は双方の重ね合わせた部分にスポット溶
接箇所を囲むように形成すれば、作業者がスポット溶接
する際のスポット溶接の目印にすることもできる。As described above, according to the present invention, a bulge for absorbing an external force whose cross section bulges in a substantially semicircular shape in the vicinity of the spot-melting spot of one or both of a pair of plates to be welded. Since the portion is formed, the external force absorbing bulging portion absorbs or reduces the external force applied to the member to be welded, and prevents stress concentration from occurring at the spot welding spot. As a result, the fatigue strength of the spot welded portion can be improved. If the external force absorbing bulging portion is formed along one of the pair of plates to be welded or along the edge portion other than the overlapped portions, the spot welding location forming the external force absorbing bulging portion is specified. You don't have to. Further, if the external force absorbing bulging portion is formed so as to surround the spot-welded portion in one or both of the pair of welded plates so as to surround the spot-welded portion, it serves as a mark for spot-welding when the worker performs spot welding. You can also do it.
【図１】本発明実施例のスポット溶接構造を示す斜視
図。FIG. 1 is a perspective view showing a spot welding structure according to an embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】その被溶接板に垂直な振動が加わった状態を示
す図２のＤ部拡大図。FIG. 3 is an enlarged view of a portion D in FIG. 2 showing a state where vertical vibration is applied to the plate to be welded.
【図４】その被溶接板に平行な外力が加わった状態を示
す図２のＤ部拡大図。FIG. 4 is an enlarged view of part D in FIG. 2 showing a state in which an external force parallel to the plate to be welded is applied.
【図５】スポット溶接の状態を示す概念図。FIG. 5 is a conceptual diagram showing a state of spot welding.
【図６】本発明の別の実施例のスポット溶接構造を示す
斜視図。FIG. 6 is a perspective view showing a spot welding structure according to another embodiment of the present invention.
【図７】図６のＢ−Ｂ線断面図。FIG. 7 is a sectional view taken along line BB of FIG. 6;
【図８】本発明の更に別の実施例のスポット溶接構造を
示す斜視図。FIG. 8 is a perspective view showing a spot welding structure according to still another embodiment of the present invention.
【図９】図８のＣ−Ｃ線断面図。FIG. 9 is a sectional view taken along line CC of FIG. 8;
１１，１２，２１，２２，３１，３２ 被溶接板 １１ａ，１２ａ，２１ａ，２２ａ，３１ａ，３２ａ 端
縁部分 １４ スポット溶接箇所 １２ｂ，２１ｂ，３１ｂ 外力吸収用膨出部11, 12, 21, 22, 22, 31, 32 Welded plate 11a, 12a, 21a, 22a, 31a, 32a Edge portion 14 Spot welding location 12b, 21b, 31b External force absorbing bulging portion
Claims (4)
それぞれの端縁部分(11a,12a,21a,22a,31a,32a)を互い
に重ね合わせた状態で前記端縁部分(11a,12a,21a,22a,3
1a,32a)をスポット溶接(14)したスポット溶接構造にお
いて、 前記一対の被溶接板(11,12,21,22,31,32)のいずれか一
方(12,21,31)又は双方の前記スポット溶融箇所(14)の近
傍に断面が略半円状に膨んだ外力吸収用膨出部(12b,21
b,31b)が形成されたことを特徴とするスポット溶接構
造。1. A pair of welded plates (11,12,21,22,31,32) in a state in which respective edge portions (11a, 12a, 21a, 22a, 31a, 32a) are superposed on each other. Edge part (11a, 12a, 21a, 22a, 3
1a, 32a) spot welding structure (14) spot welding, one of the pair of welded plates (11, 12, 21, 22, 31, 32) (12, 21, 31,) or both of the above. An external force absorbing bulge (12b, 21) with a semi-circular cross section bulging near the spot melting point (14)
b, 31b) formed spot welding structure.
板(11,12)のいずれか一方(12)又は双方の重ね合わせた
部分以外の端縁部分(11a)に沿って形成された請求項１
記載のスポット溶接構造。2. The external force absorbing bulging portion (12b) extends along one of the pair of welded plates (11, 12) (12), or along the edge portion (11a) other than the overlapped portion of both. Claim 1 formed
Spot welded structure described.
板(21,22)のいずれか一方(21)又は双方の重ね合わせた
部分にスポット溶接箇所(14,14)を囲むように形成され
た請求項１記載のスポット溶接構造。3. The spot welding spots (14, 14) are surrounded by the external force absorbing bulging portion (21a) on one of the pair of plates (21, 22) to be welded (21) or on an overlapping portion of both. The spot welded structure according to claim 1, wherein the spot welded structure is formed.
板(31,32)のいずれか一方(31)又は双方の端縁部分(31a)
に臨む請求項３記載のスポット溶接構造。4. The external force absorbing bulging portion (31b) is one of a pair of plates (31, 32) to be welded (31) or both edge portions (31a).
The spot welded structure according to claim 3, which faces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259599A JPH0999374A (en) | 1995-10-06 | 1995-10-06 | Spot welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259599A JPH0999374A (en) | 1995-10-06 | 1995-10-06 | Spot welding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0999374A true JPH0999374A (en) | 1997-04-15 |
Family
ID=17336344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7259599A Pending JPH0999374A (en) | 1995-10-06 | 1995-10-06 | Spot welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0999374A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185834A (en) * | 2004-12-28 | 2006-07-13 | Nec Tokin Corp | Sealed battery and manufacturing method thereof |
| JP2013035499A (en) * | 2011-08-10 | 2013-02-21 | Toyota Motor Corp | Method and structure of joining vehicle body member |
| JP2014073769A (en) * | 2012-10-04 | 2014-04-24 | Toyota Motor Corp | Vehicle body structure |
| JP2019209360A (en) * | 2018-06-05 | 2019-12-12 | 日本製鉄株式会社 | Spot weld joint and method for manufacturing the same |
-
1995
- 1995-10-06 JP JP7259599A patent/JPH0999374A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185834A (en) * | 2004-12-28 | 2006-07-13 | Nec Tokin Corp | Sealed battery and manufacturing method thereof |
| JP2013035499A (en) * | 2011-08-10 | 2013-02-21 | Toyota Motor Corp | Method and structure of joining vehicle body member |
| JP2014073769A (en) * | 2012-10-04 | 2014-04-24 | Toyota Motor Corp | Vehicle body structure |
| JP2019209360A (en) * | 2018-06-05 | 2019-12-12 | 日本製鉄株式会社 | Spot weld joint and method for manufacturing the same |
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