JPH0538542Y2 - - Google Patents
Info
- Publication number
- JPH0538542Y2 JPH0538542Y2 JP7914586U JP7914586U JPH0538542Y2 JP H0538542 Y2 JPH0538542 Y2 JP H0538542Y2 JP 7914586 U JP7914586 U JP 7914586U JP 7914586 U JP7914586 U JP 7914586U JP H0538542 Y2 JPH0538542 Y2 JP H0538542Y2
- Authority
- JP
- Japan
- Prior art keywords
- lead wire
- cross
- welded
- terminal
- sectional shape
- 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.)
- Expired - Lifetime
Links
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 48
- 238000005452 bending Methods 0.000 description 14
- 238000003466 welding Methods 0.000 description 12
- 230000007423 decrease Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
【考案の詳細な説明】
〔技術分野〕
この考案は、リード線の接続部に関し、詳しく
は、各種電気器具などで配線に用いられるリード
線を、溶着により端子板などに電気的かつ機械的
に接続するための接続部の構造に関する。[Detailed description of the invention] [Technical field] This invention relates to the connection of lead wires, and more specifically, the invention relates to the connection of lead wires, and more specifically, it electrically and mechanically connects lead wires used for wiring in various electrical appliances to terminal boards etc. by welding them. This invention relates to the structure of a connecting part for connection.
照明器具などの電気器具の器具内配線では、リ
ード線を超音波溶着その他の溶着手段で、端子な
どに接続していることがある。
In the internal wiring of electrical appliances such as lighting equipment, lead wires are sometimes connected to terminals by ultrasonic welding or other welding means.
このようにして溶着されたリード線の接続部の
１例を、第３図および第４図に示している。これ
らの図にみるように、端子１の平坦面に、溶着に
よつて接続されたリード線２の溶着部２ａは、概
略偏平な板状をなしている。図の具体例では、さ
らに、中央に山伏の突部２ｂが連なり、所定間隔
をおいて、その山伏の突部２ｂから両側へ突部２
ｃが出ている。なお、リード線２自体は、断面円
形の銅線などからなるので、リード線２を溶着す
る際には、断面が円形のリード線２を、偏平に押
し潰すように加圧し、前記溶着部２ａの断面形状
に変形させて、溶着部２ａの下面を端子１の平坦
面にぴつたりと密着させて溶着している。 An example of a lead wire connection portion welded in this manner is shown in FIGS. 3 and 4. As shown in these figures, the welded portion 2a of the lead wire 2 connected to the flat surface of the terminal 1 by welding has a generally flat plate shape. In the specific example shown in the figure, the protrusion 2b of the Yamabushi is further connected in the center, and the protrusions 2 are extended from the protrusion 2b of the Yamabushi to both sides at a predetermined interval.
C is out. Note that the lead wire 2 itself is made of a copper wire or the like with a circular cross section, so when welding the lead wire 2, pressure is applied so as to flatten the lead wire 2 with a circular cross section, and the welded portion 2a is The lower surface of the welded portion 2a is tightly adhered to the flat surface of the terminal 1 and welded to the flat surface of the terminal 1.
このように、溶着部２ａを偏平な形状にしてお
くのは、接続部における溶着部２ａと端子１との
接合面積を大きくして、接合面における電気的お
よび機械的な接続性能を高めようとしているので
ある。 In this way, the reason why the welded part 2a is made into a flat shape is to increase the joint area between the welded part 2a and the terminal 1 at the connection part, and to improve the electrical and mechanical connection performance at the joint surface. There is.
ところが、このような偏平形状の溶着部２ａで
は、リード線２を端子１から引き剥がす方向に曲
げるような外力が加わると、リード線２のうち、
溶着部２ａと溶着されていない側との境界部分
で、偏平形状の上下面に、大きな曲げ応力が生じ
る。しかも、この境界部分では、溶着部２ａの偏
平な断面形状と、溶着されていない側の円形の断
面形状との間に急激な断面形状の変化があるの
で、応力集中が起こり易い。そのため、リード線
２に外力が加わつて、曲げ応力が繰り返し発生す
ると、前記リード線２の境界部分で破断し易くな
るのである。 However, in such a flat welded part 2a, when an external force is applied to bend the lead wire 2 in a direction to peel it off from the terminal 1, some of the lead wire 2
A large bending stress is generated on the upper and lower surfaces of the flat shape at the boundary between the welded portion 2a and the non-welded side. Furthermore, at this boundary, there is a sudden change in cross-sectional shape between the flat cross-sectional shape of the welded portion 2a and the circular cross-sectional shape on the non-welded side, so stress concentration is likely to occur. Therefore, if an external force is applied to the lead wire 2 and bending stress is repeatedly generated, the lead wire 2 is likely to break at the boundary portion.
その結果、溶着部２ａと端子１の接合強度が充
分に高く、溶着部２ａが端子１から剥がれること
はなかつたとしても、リード線２が容易に破断し
てしまうので、リード線２の接続強度が弱くなる
のである。 As a result, even if the bonding strength between the welded part 2a and the terminal 1 is sufficiently high and the welded part 2a does not peel off from the terminal 1, the lead wire 2 will easily break, so the connection strength of the lead wire 2 will be becomes weaker.
リード線２に加わる外力のうち、偏平な溶着部
２ａの厚み方向にリード線２を曲げる方向の力
が、前記境界部分の上下面に最も大きな曲げ応力
を発生させ、リード線の接続強度に与える影響が
大きい。 Among the external forces applied to the lead wire 2, the force in the direction of bending the lead wire 2 in the thickness direction of the flat welded portion 2a generates the largest bending stress on the upper and lower surfaces of the boundary portion, which affects the connection strength of the lead wire. A large impact.
一般に、構造材の曲げに対する強さは、断面２
次モーメントの大きさに関係する。すなわち、同
じ材質であれば、曲げ方向における断面２次モー
メントが大きいほど、曲げに対して強いことにな
る。同じ断面積でも、その形状によつて、断面２
次モーメントの大きさは異なる。そして、何れの
方向に対しても同じ断面２次モーメントを有し、
何れの方向に対しても均等に曲げに強い断面形状
は、円形である。したがつて、円形断面のリード
線２自体は、曲げに対して充分な強度を有してい
ると言える。 Generally, the bending strength of structural materials is
It is related to the magnitude of the next moment. That is, if the material is the same, the larger the moment of inertia of area in the bending direction is, the stronger it is against bending. Even if the cross-sectional area is the same, the cross-section 2
The magnitude of the next moment is different. and has the same moment of inertia in any direction,
The cross-sectional shape, which is equally resistant to bending in any direction, is circular. Therefore, it can be said that the lead wire 2 itself having a circular cross section has sufficient strength against bending.
しかし、前記したような偏平形状の溶着部２ａ
では、曲げ外力が最も加わり易い厚み方向の断面
２次モーメントが小さい。この溶着部２ａと溶着
していない側との境界部分では、溶着部２ａとほ
ぼ同じ断面２次モーメントを有しており、しか
も、この境界部分に最も応力が集中するので、外
力によるリード線２の破断が起こり易く、リード
線の接続強度が弱くなつていたのである。 However, as described above, the flat welded portion 2a
In this case, the moment of inertia in the thickness direction to which external bending force is most likely to be applied is small. The boundary between the welded part 2a and the non-welded side has almost the same moment of inertia as the welded part 2a, and the stress is most concentrated in this boundary, so the lead wire 2 breakage was likely to occur, and the connection strength of the lead wires was weakened.
この考案は、以上のことに鑑みて、接続強度に
優れたリード線の接続部を提供することを目的と
する。
In view of the above, the object of this invention is to provide a lead wire connection portion with excellent connection strength.
この考案は、上記の目的を達成するために、リ
ード線が偏平に変形させられて溶着されたリード
線の接続部であつて、前記リード線の溶着部の断
面形状が、両側から中央にかけて徐々に厚みを増
すようになつていることを特徴とするリード線の
接続部を要旨とする。
In order to achieve the above-mentioned object, this invention provides a lead wire connection portion in which the lead wire is flattened and welded, and the cross-sectional shape of the welded portion of the lead wire gradually changes from both sides to the center. The gist of this invention is a lead wire connection portion characterized by an increased thickness.
以下に、この考案を、その実施例をあらわす図
面を参照しながら詳しく説明する。 This invention will be described in detail below with reference to drawings showing embodiments thereof.
第１図は、この考案の１実施例をあらわしてい
る。第２図は、その断面をあらわしている。両図
にみるように、超音波溶着などの方法により端子
１などに溶着されたリード線２は、その溶着部２
ａの断面形状が、偏平な五角形（家型）をなして
おり、溶着部２ａの両側から中央にかけて徐々に
厚みを増している。また、溶着部２ａの左右に傾
斜した上面には、中央から両側にかけて山伏の突
部２ｄが、左右交互に一定間隔毎に設けられてい
る。 FIG. 1 shows one embodiment of this invention. FIG. 2 shows its cross section. As shown in both figures, the lead wire 2 welded to the terminal 1 etc. by a method such as ultrasonic welding has a welded part 2.
The cross-sectional shape of a is a flat pentagon (house-shaped), and the thickness gradually increases from both sides of the welded part 2a to the center. Further, on the left and right inclined upper surface of the welded part 2a, mountain-shaped protrusions 2d are provided at regular intervals from the center to both sides, alternating left and right.
リード線２は、溶着部２ａから離れた部分で
は、円形断面をなしており、この円形断面部分か
ら前記した溶着部２ａへと断面形状が変化してい
る。特に、リード線２が端子１から離れる個所、
すなわち溶着部２ａと溶着されていない側との境
界部分からリード線２の本体側にかけて、断面形
状が、偏平な五角形から背の高い三角形を経て円
形へとスムーズに変化している。断面形状が、五
角形から三角形に変化する個所、すなわち、前記
境界部分に隣接するリード線２の根元部分（第１
図中、矢印Ｃで指す部分）には傾斜がつけられて
おり、断面形状の変化による応力集中が生じ難い
ようになつている。 The lead wire 2 has a circular cross-section at a portion away from the welded portion 2a, and the cross-sectional shape changes from this circular cross-sectional portion to the welded portion 2a described above. In particular, where the lead wire 2 separates from the terminal 1,
That is, from the boundary between the welded portion 2a and the non-welded side to the main body side of the lead wire 2, the cross-sectional shape changes smoothly from a flat pentagon to a tall triangle to a circle. The part where the cross-sectional shape changes from pentagon to triangle, that is, the root part (first part) of lead wire 2 adjacent to the boundary part.
The portion (pointed by arrow C in the figure) is sloped to prevent stress concentration from occurring due to changes in cross-sectional shape.
前記した溶着部２ａの断面形状は、溶着部２ａ
と端子１との接触面積を充分に確保しつつ、溶着
部２ａの厚み方向における断面２次モーメントが
出来るだけ大きくなるように設定されている。 The cross-sectional shape of the welded portion 2a described above is the same as that of the welded portion 2a.
The second moment of area in the thickness direction of the welded portion 2a is set to be as large as possible while ensuring a sufficient contact area between the welded portion 2a and the terminal 1.
断面２次モーメントとは、断面を無数の微小面
積dAに分け、１つの軸（たとえばｘ軸）からの
距離をｙとするとき、微小面積と距離の２乗との
積を断面全部について加え合わせたものをいい、
Ｉ＝Σy2・dA
（Ｉは断面２次モーメント）
であらわされる。同じ材質の材料であれば、断面
２次モーメントが大きい形状のものの方が、より
曲げにくいこと、すなわち、曲げに強いことが判
つている。また、同じ断面積であつても、断面形
状によつて、断面２次モーメントの大きさは変わ
る。 The second moment of area is the sum of the product of the infinitesimal area and the square of the distance for the entire cross section, when the cross section is divided into countless minute areas dA, and the distance from one axis (for example, the x-axis) is y. It is expressed as I=Σy 2・dA (I is the second moment of area). It has been found that, if the materials are the same, those with a larger moment of inertia are more difficult to bend, that is, more resistant to bending. Further, even if the cross-sectional area is the same, the magnitude of the second moment of area changes depending on the cross-sectional shape.
前記第２図で、一点鎖線で示す軸に関する断面
２次モーメントは、リード線２に、端子１の表面
と平行な方向に外力を加えて曲げようとした場合
の、曲げに対する強さを示す。この方向について
は、前記したように、溶着部２ａと端子１の接触
面積を増やすために偏平な断面形状を採用してい
れば、断面２次モーメントも大きくなり、曲げに
対して強くなる。この点では、断面形状が単なる
矩形状のものであつても、第２図の実施例であつ
ても、それほど大きな違いはない。 In FIG. 2, the moment of inertia about the axis indicated by the dashed line indicates the strength against bending when an external force is applied to the lead wire 2 in a direction parallel to the surface of the terminal 1 to bend it. In this direction, as described above, if a flat cross-sectional shape is adopted to increase the contact area between the welded portion 2a and the terminal 1, the second moment of area will also be increased, and the terminal will be strong against bending. In this respect, there is not much difference whether the cross-sectional shape is a simple rectangle or the embodiment shown in FIG.
ところが、前記一点鎖線で示す軸とは直交する
方向、すなわち、端子１の表面と平行な軸に関し
ては、偏平な矩形状断面の溶着部２ａでは、前記
断面２次モーメントは小さく、曲げに対して非常
に弱くなるのである。 However, in the direction perpendicular to the axis indicated by the dashed line, that is, the axis parallel to the surface of the terminal 1, in the welded part 2a having a flat rectangular cross section, the moment of inertia of the area is small, and it is difficult to bend. It becomes very weak.
これに対し、第２図の実施例では、溶着部２ａ
の両側から中央にかけて厚みが分厚くなつてお
り、この厚みのある部分の存在によつて、断面２
次モーメントが大きくなる。その結果、リード線
の接続強度が向上する。 On the other hand, in the embodiment shown in FIG.
The thickness becomes thicker from both sides to the center, and due to the existence of this thick part, the cross section 2
The second moment becomes larger. As a result, the connection strength of the lead wires is improved.
しかも、溶着部２ａと端子１の接合面積は、充
分に確保されているので、溶着部２ａと端子１の
接合強度を低下させることなく、曲げに対する強
度を向上させることができる。 Furthermore, since the bonding area between the welded portion 2a and the terminal 1 is sufficiently secured, the strength against bending can be improved without reducing the bonding strength between the welded portion 2a and the terminal 1.
これは、リード線２の断面積は一定であるか
ら、矩形断面の溶着部２ａで断面２次モーメント
を大きくしようとして、矩形の高さを増やすと、
矩形の幅が狭くなり、溶着部２ａと端子１の接合
面積が少なくなつて、接合強度が低下し、結局、
リード線の接続強度が低下する。 This is because the cross-sectional area of the lead wire 2 is constant, so if you try to increase the moment of inertia of the welded part 2a with a rectangular cross section and increase the height of the rectangle,
The width of the rectangle becomes narrower, the bonding area between the welded part 2a and the terminal 1 decreases, and the bonding strength decreases.
The lead wire connection strength decreases.
しかし、前記した実施例の構造では、溶着部２
ａと端子１の接合面積を減らすことなく、断面２
次モーメントを大きくすることができるのであ
る。 However, in the structure of the embodiment described above, the welded portion 2
cross section 2 without reducing the bonding area between a and terminal 1.
This allows the second moment to be increased.
また、溶着部２ａの断面形状が、前記した家型
五角形のように、両側から中央にかけて徐々に厚
みが増している形状であれば、溶着部２ａの断面
形状から、リード線２の溶着されていない側の円
形断面部分への断面形状の変化が滑らかに行わ
れ、応力集中が生じ難い。 Furthermore, if the cross-sectional shape of the welded portion 2a is a shape that gradually increases in thickness from both sides to the center, like the above-mentioned house-shaped pentagon, the cross-sectional shape of the welded portion 2a indicates that the lead wire 2 is not welded. The cross-sectional shape changes smoothly to the circular cross-sectional portion on the non-containing side, and stress concentration is unlikely to occur.
すなわち、例えば、偏平な矩形断面の溶着部か
ら、リード線の円形断面へと、短い距離で滑らか
に断面形状を変化させるのは、極めて難しく、断
面が急激に変化する個所で、応力集中が発生し
て、その部分で強度が低下する可能性がある。ま
た、第３図に示した従来技術のような凸形の断面
であれば、このような複雑な出入りのある断面形
状と円形の断面形状の間には、どうしても、極端
な断面変化が生じ、応力集中が起きて、強度が低
下してしまうのである。 In other words, it is extremely difficult to smoothly change the cross-sectional shape over a short distance from a welded part with a flat rectangular cross-section to a circular cross-section of the lead wire, and stress concentration occurs where the cross-section changes suddenly. Therefore, the strength may decrease in that area. Furthermore, if the cross section is a convex shape like the conventional technique shown in FIG. This causes stress concentration and reduces strength.
これに対し、溶着部２ａの断面形状が、前記し
た家型五角形のように中央が高く両側へと低くな
る形状であれば、この五角形の高さが増えるよう
に断面形状を変化させれば、比較的スムーズに円
形断面へと変化させることができ、大きな段差や
極端な断面変化が生じないのである。 On the other hand, if the cross-sectional shape of the welded part 2a is high in the center and becomes lower toward both sides like the above-mentioned house-shaped pentagon, if the cross-sectional shape is changed so that the height of this pentagon increases, It is possible to change the cross section to a circular one relatively smoothly, and there are no large steps or extreme cross-sectional changes.
さらに、溶着部２ａの断面形状が、中央が高く
両側へと低くなる形状であれば、溶着工程で、断
面円形のリード線２を押圧して変形させるのが容
易で、端子１への溶着強度も高くなる。 Furthermore, if the cross-sectional shape of the welding part 2a is high in the center and decreasing toward both sides, it is easy to press and deform the lead wire 2, which has a circular cross section, in the welding process, and the welding strength to the terminal 1 is increased. It also becomes more expensive.
これは、リード線２を押圧変形させるときの荷
重は、溶着部２ａの左右の傾斜面と直交する方
向、すなわち、リード線２に対して左右から斜め
下向きに中央に向けて加わるので、荷重が外側に
分散されず、中央に向けて集中的に作用する。そ
の結果、荷重が効率的に作用してリード線２の変
形がスムーズに行われる。荷重が効率的に作用す
れば、溶着部２ａを端子１に圧接する力も強くな
り、溶着部２ａと端子１の溶着強度が高まる。 This is because the load when pressing and deforming the lead wire 2 is applied in a direction perpendicular to the left and right inclined surfaces of the welded part 2a, that is, from the left and right to the lead wire 2 diagonally downward toward the center. It is not dispersed to the outside, but acts concentratedly towards the center. As a result, the load acts efficiently and the lead wire 2 is deformed smoothly. If the load acts efficiently, the force that presses the welded portion 2a against the terminal 1 becomes stronger, and the welding strength between the welded portion 2a and the terminal 1 increases.
考案者の確かめたところ、リード線の接続部
に、第２図に示したような溶着部２ａの構造を採
用したところ、単純な矩形板状の溶着部に比べ
て、リード線の接続強度が25％向上した。但し、
この考案の範囲内で、溶着部２ａの構造を種々変
更すれば、前記25％以上の接続強度の向上を果た
すことも可能である。 The inventor has confirmed that when the structure of the welded part 2a shown in Figure 2 is adopted for the lead wire connection part, the strength of the lead wire connection is increased compared to a simple rectangular plate-shaped welded part. Improved by 25%. however,
By making various changes to the structure of the welded portion 2a within the scope of this invention, it is possible to improve the connection strength by 25% or more.
この考案にかかるリード線の接続部は、照明器
具などの電気器具の器具内配線において、リード
線を端子などに接続するときに使われるが、この
ような用途に限定されるものではない。 The lead wire connection portion according to this invention is used for connecting the lead wire to a terminal in internal wiring of an electrical appliance such as a lighting fixture, but is not limited to such uses.
なお、この考案は上記の実施例に限られない。
溶着は、超音波溶着以外の方法で行つてもよい。
リード線は、絶縁物で覆われた電線の芯線、裸
線、単線、束線など種々あり、特に限定されな
い。 Note that this invention is not limited to the above embodiments.
Welding may be performed by methods other than ultrasonic welding.
There are various types of lead wires, such as core wires of electric wires covered with insulators, bare wires, single wires, and bundled wires, and there are no particular limitations on the lead wires.
この考案にかかるリード線の接続部は、以上に
みるように、溶着部の断面形状が、両側から中央
にかけて徐々に厚みを増すようになつていること
により、リード線に外力が加わつても、溶着部と
溶着されていない側との境界部分で、リード線が
破断され難くなり、その結果、リード線の接続強
度を大幅に向上させることができた。
As seen above, in the lead wire connection part according to this invention, the cross-sectional shape of the welded part gradually increases in thickness from both sides to the center, so that even if an external force is applied to the lead wire, The lead wire is less likely to break at the boundary between the welded portion and the non-welded side, and as a result, the connection strength of the lead wire can be significantly improved.
第１図はこの考案の第１実施例をあらす斜視
図、第２図はそのＡ−A′断面図、第３図は第４
図のＢ−B′断面図、第４図は従来の１例をあら
わす斜視図である。
１……端子、２……リード線、２ａ……溶着
部。
Fig. 1 is a perspective view showing the first embodiment of this invention, Fig. 2 is a sectional view taken along line A-A', and Fig. 3 is a sectional view of the fourth embodiment.
The sectional view taken along the line B-B' in the figure, and FIG. 4 are perspective views showing one example of the prior art. 1...terminal, 2...lead wire, 2a...welded part.
Claims (1)
ード線の接続部であつて、前記リード線の溶着部
の断面形状が、両側から中央にかけて徐々に厚み
を増すようになつていることを特徴とするリード
線の接続部。 A lead wire connection portion in which the lead wire is flattened and welded, characterized in that the cross-sectional shape of the welded portion of the lead wire gradually increases in thickness from both sides toward the center. Connecting part of the lead wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7914586U JPH0538542Y2 (en) | 1986-05-26 | 1986-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7914586U JPH0538542Y2 (en) | 1986-05-26 | 1986-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62191168U JPS62191168U (en) | 1987-12-04 |
| JPH0538542Y2 true JPH0538542Y2 (en) | 1993-09-29 |
Family
ID=30928731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7914586U Expired - Lifetime JPH0538542Y2 (en) | 1986-05-26 | 1986-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538542Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024028421A (en) * | 2019-08-30 | 2024-03-04 | Ｉ－Ｐｅｘ株式会社 | electrical connectors |
-
1986
- 1986-05-26 JP JP7914586U patent/JPH0538542Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62191168U (en) | 1987-12-04 |
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