JP2000133355A - Female terminal metal piece - Google Patents
Female terminal metal pieceInfo
- Publication number
- JP2000133355A JP2000133355A JP10310326A JP31032698A JP2000133355A JP 2000133355 A JP2000133355 A JP 2000133355A JP 10310326 A JP10310326 A JP 10310326A JP 31032698 A JP31032698 A JP 31032698A JP 2000133355 A JP2000133355 A JP 2000133355A
- Authority
- JP
- Japan
- Prior art keywords
- tab
- projection
- folded portion
- protrusion
- bottom wall
- 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
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、雌端子金具に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female terminal fitting.
【０００２】[0002]
【従来の技術】雌端子金具は、雄端子金具のタブを受け
入れる角筒部内に弾性接触片を形成し、この弾性接触片
と角筒部の内壁との間でタブを弾性的に挟圧することに
より所定の接触圧で両端子金具が接続されるようになっ
ている。この種の雌端子金具における弾性接触片の形態
として、図７に示すようなものが考えられる。この弾性
接触片ａは、角筒部ｂの底壁ｃを基端ｄとして斜め上前
方へ延出してその先端を弧状に折り返すとともに、その
折り返し部ｅから斜め下後方へ脚部ｆを延出させ、その
脚部ｆの先端を底壁ｃに当接させ、さらに、折り返し部
ｅの上面における頂上位置ｇに突起ｈを形成したもので
ある。2. Description of the Related Art In a female terminal fitting, an elastic contact piece is formed in a rectangular tube portion for receiving a tab of a male terminal fitting, and the tab is elastically pressed between the elastic contact piece and the inner wall of the rectangular tube portion. Thus, both terminal fittings are connected at a predetermined contact pressure. As a form of the elastic contact piece in this type of female terminal fitting, the form shown in FIG. 7 can be considered. The elastic contact piece a extends obliquely upward and forward with the bottom wall c of the rectangular tube portion b as a base end d, and its tip is folded back in an arc shape, and the leg f extends diagonally downward and backward from the folded portion e. Then, the tip of the leg f is brought into contact with the bottom wall c, and a projection h is formed at a top position g on the upper surface of the folded portion e.
【０００３】角筒部ｂに挿入されたタブｔが突起ｈと角
筒部ｂの天井面ｊとの間に差し込まれると、弾性接触片
ａが、その底壁ｃ上の基端ｄ及び脚部ｆの先端ｋとを２
つの支点として下方へ弾性撓みし、その弾性復元力によ
りタブｔとの間で所定の接触圧が確保される。また、突
起ｈをタブｔに接触させるようにしたので、タブｔとの
接触面積は極小となり、その結果、弾性接触片ａの撓み
応力が小さくても必要な圧力が確保される。When the tab t inserted into the rectangular tube portion b is inserted between the projection h and the ceiling surface j of the rectangular tube portion b, the elastic contact piece a becomes the base end d on the bottom wall c and the leg. The tip k of the part f is 2
As a fulcrum, it is elastically bent downward, and a predetermined contact pressure with the tab t is secured by the elastic restoring force. Further, since the projection h is brought into contact with the tab t, the contact area with the tab t is minimized. As a result, a necessary pressure is secured even if the bending stress of the elastic contact piece a is small.
【０００４】[0004]
【発明が解決しようとする課題】上記のような雌端子金
具では、脚部ｆの長さが短くなるほど折り返し部ｅの撓
み量（応力）が大きくなり、タブｔと突起ｈとの接触圧
も増大することになる。したがって、コンパクト化のた
めに雌端子金具の全長を短く設計する際に脚部ｆの長さ
も短くしなければならない場合（例えば図７に示すよう
に脚部ｆの後方近傍に抜止めのためのランス係止孔ｍが
開口されていて脚部ｆを後方へ延長できない場合）に
は、適正値を越えた過剰な接触圧となる虞がある。接触
圧が過剰になると、タブｔの挿入時の摩擦抵抗が大きく
なって作業性の低下を来すとともに、折り返し部ｅが応
力の高まりによって疲労し易くなる。また、上記とは逆
にタブｔと突起ｈの接触圧を高めたい場合には、脚部ｆ
を短くすることが考えられるが、脚部ｆを短くすると、
脚部ｆの底壁ｃに対する傾斜角度がきつくなって弾性接
触片ａの撓みに伴って脚部ｆの先端ｋが底壁ｃ上で摺接
する動作が阻害され、その結果、弾性接触片ａの撓み動
作が円滑に行われなくなる虞がある。また、脚部ｆの傾
斜角度を小さくすると、折り返し部ｅの高さが低くなっ
て撓み代を十分確保できなくなる虞がある。したがっ
て、接触圧を高めるに際して、弾性接触片ａの全体の形
状を変更しなくて済む手段が望まれる。In the above-mentioned female terminal fitting, the bending amount (stress) of the folded portion e increases as the length of the leg portion f decreases, and the contact pressure between the tab t and the projection h also decreases. Will increase. Therefore, when designing the overall length of the female terminal fitting to be short for compactness, the length of the leg f must also be shortened (for example, as shown in FIG. If the lance locking hole m is open and the leg f cannot be extended rearward), there is a possibility that an excessive contact pressure exceeding an appropriate value may occur. When the contact pressure becomes excessive, the frictional resistance when the tab t is inserted becomes large and the workability is reduced, and the folded portion e is easily fatigued due to an increase in stress. On the contrary, when it is desired to increase the contact pressure between the tab t and the protrusion h, the leg f
Can be shortened, but when the leg f is shortened,
The inclination angle of the leg portion f with respect to the bottom wall c is so steep that the tip k of the leg portion f slides on the bottom wall c with the bending of the elastic contact piece a, and as a result, the elastic contact piece a The bending operation may not be performed smoothly. Further, when the inclination angle of the leg portion f is reduced, the height of the folded portion e is reduced, and there is a possibility that a sufficient bending allowance cannot be secured. Therefore, when increasing the contact pressure, a means that does not need to change the entire shape of the elastic contact piece a is desired.
【０００５】また、上記とは別に次のような問題もあ
る。それは、突起ｈは折り返し部ｅの頂上位置ｇに配置
され、且つ折り返し部ｅよりも曲率半径の小さい弧状に
盛り上がっていることから、挿入されるタブｔに対する
突起ｈの対向面の傾斜角度が急角度になる場合がある。
このような場合に、タブｔの挿入方向が正規の向きに対
して斜めになっていると、タブｔの先端が突起ｈに突き
当たって引っ掛かりを生じさせる虞がある。[0005] In addition to the above, there is also the following problem. Since the protrusion h is arranged at the top position g of the folded portion e and rises in an arc shape having a smaller radius of curvature than the folded portion e, the inclination angle of the facing surface of the protrusion h with respect to the inserted tab t is sharp. May be an angle.
In such a case, if the insertion direction of the tab t is oblique with respect to the normal direction, the tip of the tab t may hit the projection h and cause a catch.
【０００６】本願発明は上記事情に鑑みて創案され、そ
の目的の１つは弾性接触片の全体的な形状設定に制約が
あってもタブとの接触圧を増減変更できるようにするこ
とであり、これとは別に、タブ挿入時にタブが突起に突
き当たるのを回避することも目的としている。The present invention has been made in view of the above circumstances, and one of its objects is to enable the contact pressure with the tab to be increased or decreased even if the overall shape of the elastic contact piece is restricted. Apart from this, another object is to prevent the tab from hitting the projection when the tab is inserted.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、雄端
子金具のタブを前方から迎え入れる筒部と、この筒部の
底壁を基端として斜め前上方に延出してその延出端を下
方へ弧状に折り返すとともに、この折り返し部から戻り
方向に延出した脚部の先端を前記底壁に当接させ、且つ
前記折り返し部の上面に前記タブと接触可能な突起を形
成してなる弾性接触片とを備えてなり、前記筒部に挿入
された前記タブが前記突起に対して摺接しつつ押さえ付
けることで、前記弾性接触片が、その底壁上の前記基点
及び前記脚部の前記底壁への当接部を２支点として弾性
撓みするようにした雌端子金具であって、前記タブの挿
抜方向において前記突起が前記折り返し部の最上点から
外れた位置にある構成とした。According to a first aspect of the present invention, there is provided a tubular portion for receiving a tab of a male terminal fitting from the front, and extending obliquely upward and forward with a bottom wall of the tubular portion as a base end. Are bent downward in an arc shape, and the ends of the legs extending in the return direction from the folded portion are brought into contact with the bottom wall, and a projection is formed on the upper surface of the folded portion so as to be able to contact the tab. An elastic contact piece, and the tab inserted into the cylindrical portion is pressed down while slidingly contacting the projection, so that the elastic contact piece forms the base point and the leg on the bottom wall thereof. The female terminal fitting is configured to be elastically bent with the contact portion to the bottom wall as two fulcrums, wherein the projection is located at a position deviated from the uppermost point of the folded portion in the insertion / removal direction of the tab.
【０００８】請求項２の発明は、請求項１の発明におい
て、前記突起が前記折り返し部の最上点から後方へずれ
た位置にあり、且つその突起の前記タブとの対向面が前
記折り返し部の弧状外面に対して接線状に連続している
構成とした。According to a second aspect of the present invention, in the first aspect of the present invention, the protrusion is located at a position displaced rearward from an uppermost point of the folded portion, and a surface of the protrusion facing the tab is formed of the folded portion. It is configured to be tangentially continuous with the arcuate outer surface.
【０００９】[0009]
【発明の作用及び効果】［請求項１の発明］例えば雌端
子金具の全長を短くしてコンパクト化を図ろうとするの
に伴って脚部の長さを短くしなければならない場合に
は、突起を折り返し部の最上点から前方へずれた位置に
設定する。すると、タブの挿入に伴う折り返し部の上下
方向の変位量は、突起が折り返し部の最上点に位置する
場合に比べて小さくなる。これは、折り返し部の弾性復
元力が小さくなることを意味する。したがって、脚部の
長さが短くなっても、突起とタブとの接触圧が過大にな
ることを防止することができる。また、脚部の長さをそ
のままにして突起の位置を前方へずらせば、接触圧を低
減することができる。逆に、タブとの接触圧を高めたい
場合には、突起の位置を折り返し部の最上点よりも後方
へずれた位置に設定すれば、折り返し部の弾性復元力が
大きくなり、接触圧を増大させることができる。このと
き、脚部を短くする必要がないので、脚部の短尺化に起
因して脚部の傾斜角度を大きくしたり折り返し部の位置
を低くせずに済む。即ち、弾性接触片の全体形状を変更
しなくても、接触圧を増減調節することができる。[Invention of claim 1] For example, when the length of the leg portion needs to be shortened in order to shorten the total length of the female terminal fitting so as to achieve compactness, a projection is required. Is set to a position shifted forward from the uppermost point of the folded portion. Then, the amount of vertical displacement of the folded portion due to the insertion of the tab is smaller than when the projection is located at the highest point of the folded portion. This means that the elastic restoring force of the folded portion becomes smaller. Therefore, even if the length of the leg is shortened, it is possible to prevent the contact pressure between the projection and the tab from becoming excessive. If the position of the projection is shifted forward while keeping the length of the leg, the contact pressure can be reduced. Conversely, if you want to increase the contact pressure with the tab, set the position of the protrusion to a position shifted backward from the uppermost point of the folded part, the elastic restoring force of the folded part increases, and the contact pressure increases Can be done. At this time, since it is not necessary to shorten the leg, it is not necessary to increase the inclination angle of the leg or lower the position of the folded portion due to the shortening of the leg. That is, the contact pressure can be increased or decreased without changing the overall shape of the elastic contact piece.
【００１０】また、上記とは別に、タブの挿入方向が正
規方向に対して斜めになっていてタブの先端が突起に突
き当たる虞がある場合には、突起を折り返し部の最上点
から後方へずれた位置に設定する。すると、突起は、折
り返し部の後下がりの傾斜面上から斜め上後方に突き出
すことになるため、挿入されるタブに対する突起の対向
面の傾斜角度は小さくなり、これにより、タブが突起に
突き当たって引っ掛かりを生じさせることが防止され
る。[0010] Alternatively, if the insertion direction of the tab is oblique to the normal direction and the tip of the tab may hit the projection, the projection is shifted rearward from the uppermost point of the folded portion. To the position you set. Then, since the projections project obliquely upward and rearward from the downwardly inclined surface of the folded back portion, the inclination angle of the opposite surface of the projections with respect to the inserted tab becomes small, whereby the tabs hit the projections. The occurrence of snagging is prevented.
【００１１】［請求項２の発明］突起のタブとの対向面
が折り返し部の弧状外面に対して接線状に連なっている
ので、突起が折り返し部の弧状外面から独立して盛り上
がっているものと比較すると、タブとの対向面の傾斜角
度は小さくなる。したがって、タブの突起に対する突き
当たりを確実に防止することができる。[Invention of claim 2] Since the surface of the projection facing the tab is tangentially connected to the arcuate outer surface of the folded portion, the projection is raised independently of the arcuate outer surface of the folded portion. In comparison, the inclination angle of the surface facing the tab becomes smaller. Therefore, it is possible to reliably prevent the tab from hitting the projection.
【００１２】[0012]
【発明の実施の形態】［実施形態１］以下、本発明を具
体化した実施形態１を図１乃至図４を参照して説明す
る。[First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS.
【００１３】本実施形態の雌端子金具１０は、雄端子金
具のタブＴを前方から迎え入れる角筒部１１と、この角
筒部１１内に設けた弾性接触片１２とからなる。弾性接
触片１２は、角筒部１１の底壁１３を基端１４として斜
め前上方に延出してその延出端を下方へ弧状に折り返す
とともに、この折り返し部１５から戻り方向に延出した
脚部１６の先端１７を底壁１３に当接させたものであ
る。また、折り返し部１５の上面には、折り返し部１５
よりも曲率半径の小さい略球面状をなし、タブＴと接触
可能な突起１８が叩き出しにより形成されている。The female terminal fitting 10 of this embodiment comprises a square tube portion 11 for receiving the tab T of the male terminal member from the front, and an elastic contact piece 12 provided in the square tube portion 11. The elastic contact piece 12 extends obliquely forward and upward with the bottom wall 13 of the rectangular tube portion 11 as a base end 14 and folds the extended end downward in an arc shape, and a leg extending from the folded portion 15 in the return direction. The tip 17 of the part 16 is in contact with the bottom wall 13. Also, on the upper surface of the folded portion 15, a folded portion 15 is provided.
It has a substantially spherical shape with a smaller radius of curvature than that of the first embodiment, and a projection 18 that can contact the tab T is formed by punching.
【００１４】角筒部１１にタブＴが挿入されると、その
タブＴは角筒部１１の天井面１９に摺接するとともに突
起１８の上面に係合してこれを押し下げる。これによ
り、弾性接触片１２は、その底壁１３上の基端１４及び
脚部１６の底壁１３への当接部１７を２つの支点とし
て、底壁１３に接近するように全体として下方へ変位す
るとともに、折り返し部１５がその弧の曲率半径を小さ
くするように弾性撓みするようになっている。そして、
この折り返し部１５の弾性復元力により、タブＴと突起
１８との間では所定の接触圧が確保される。また、タブ
Ｔは、弾性接触片１２と面接触されるのではなく、突起
１８を介して点接触するようになっているので、突起１
８とタブＴとの接触面積は極小となり、弾性接触片１２
の撓み応力が小さくても必要な圧力が確保される。ま
た、この点接触の形態は、タブＴの挿抜に際して摺動抵
抗を低減することにも寄与している。When the tab T is inserted into the rectangular tube portion 11, the tab T slides on the ceiling surface 19 of the rectangular tube portion 11 and engages with the upper surface of the projection 18 to push it down. As a result, the elastic contact piece 12 moves downward as a whole so as to approach the bottom wall 13 with the base end 14 on the bottom wall 13 and the contact portion 17 of the leg 16 with the bottom wall 13 serving as two fulcrums. At the same time, the folded portion 15 is elastically bent so as to reduce the radius of curvature of the arc. And
Due to the elastic restoring force of the folded portion 15, a predetermined contact pressure is secured between the tab T and the projection 18. Further, since the tab T is not in surface contact with the elastic contact piece 12 but in point contact via the projection 18, the tab 1
8 and the tab T are minimized, and the elastic contact piece 12
The required pressure is ensured even if the bending stress of is small. In addition, this point contact form also contributes to reducing the sliding resistance when inserting and removing the tab T.
【００１５】また、底壁１３には、脚部１６の後方近傍
位置に開口するように係止孔２０が形成されている。こ
の係止孔２０には、図示しないハウジングの抜止片Ｎが
係止され、もって雌端子金具１０のハウジングからの抜
止めが図られるようになっている。さて、本実施形態で
は、タブＴが当接する突起１８の位置は、タブＴの挿抜
方向において折り返し部１５の最上点１５Ａ（最も高い
位置）から前方へずれた位置に設定されている。即ち、
突起１８は、折り返し部１５における前下がりの弧状面
１５Ｂから斜め上前方へ球面状に盛り上がった形態とさ
れている。また、突起１８の折り返し部１５の弧状外面
１５Ｂからの盛り上がり寸法については、タブＴが角筒
部１１から抜き取られた状態と挿入された状態のいずれ
においても、突起１８の最上点の高さが折り返し部１５
の最上点の高さよりも高くなるように設定されている。A locking hole 20 is formed in the bottom wall 13 so as to open at a position near the rear of the leg 16. The retaining piece N of the housing (not shown) is retained in the retaining hole 20 so that the female terminal fitting 10 is prevented from being removed from the housing. In the present embodiment, the position of the projection 18 with which the tab T abuts is set to a position displaced forward from the uppermost point 15A (highest position) of the folded portion 15 in the tab T insertion / removal direction. That is,
The protrusion 18 is formed in a form that is spherically swelled obliquely upward and forward from an arcuate surface 15 </ b> B descending forward in the folded portion 15. Regarding the size of the protrusion 18 protruding from the arc-shaped outer surface 15B of the folded portion 15, the height of the uppermost point of the protrusion 18 is set in both the state where the tab T is pulled out from the rectangular tube portion 11 and the state where the tab T is inserted. Folding part 15
Is set to be higher than the height of the uppermost point of.
【００１６】上記のように突起１８を折り返し部１５の
最上点１５Ａよりも前方へずれた位置に配置している本
実施形態の雌端子金具１０は、折り返し部１５の最上位
置１５Ａに突起１１８を配置したもの（図３に鎖線で示
す）と比較すると、次のような点で相違する。即ち、図
４に示すように、双方の突起１８，１１８の高さを同一
であり、タブＴが角筒部１１に挿入されたときに両突起
１８，１１８の高さが共に寸法Ｘだけ低くなると想定し
た場合、突起１１８が最上点１５Ａに位置するもの（図
４の右側に示す）ではその突起１１８の変位量Ｘとほぼ
同じ寸法Ｙだけ折り返し部１５が下降するとともに弧を
小さくするように弾性撓みする。これに対し、図４の左
側に示す本実施形態のものでは、突起１８の位置が折り
返し部１５の最上点１５Ａから前方へずれているので、
折り返し部１５の下降量は、突起１１８が最上点１５Ａ
に位置するものに比べて小さくなる。この下降量が小さ
いということは、折り返し部１５の弾性撓み量即ち弾性
復元力が小さいということを意味し、これにより、突起
１８とタブＴとの接触圧も小さくなるのである。As described above, the female terminal fitting 10 of the present embodiment in which the projection 18 is disposed at a position shifted forward from the uppermost point 15A of the folded portion 15 has the projection 118 at the uppermost position 15A of the folded portion 15. When compared with the arrangement (indicated by the dashed line in FIG. 3), the following points are different. That is, as shown in FIG. 4, the heights of both projections 18 and 118 are the same, and when the tab T is inserted into the rectangular tube portion 11, the heights of both projections 18 and 118 are both lower by the dimension X. Assuming that the projection 118 is located at the uppermost point 15A (shown on the right side of FIG. 4), the folded portion 15 is lowered by a dimension Y substantially equal to the displacement X of the projection 118 and the arc is reduced. Elastically bends. On the other hand, in the case of the present embodiment shown on the left side of FIG. 4, the position of the projection 18 is shifted forward from the uppermost point 15A of the folded portion 15, so that
The lowering amount of the folded portion 15 is such that the protrusion 118 is at the highest point 15A.
Is smaller than the one located at. The small amount of the downward movement means that the elastic bending amount of the folded portion 15, that is, the elastic restoring force is small, so that the contact pressure between the projection 18 and the tab T is also small.
【００１７】本実施形態のように折り返し部１５から延
びる脚部１６を底壁１３に当接させてここを支点の１つ
として弾性接触片１２が弾性撓みするようなタイプの雌
端子金具では、脚部１６の長さが短くなるほど折り返し
部１５の撓み量（応力）が大きくなり、タブＴと突起１
８との接触圧も増大することになるが、このような雌端
子金具１０において、脚部１６の長さを短くしなければ
ならないという事情がある場合（例えば、係止孔２０か
ら角筒部１１の前端までの寸法を詰めて雌端子金具１０
全体のコンパクト化を図ろうとするような場合）でも、
本実施形態のように突起１８の位置を折り返し部１５の
最上点１５Ａよりも前方にずらせば、脚部１６の短縮に
起因する接触圧の増大分を相殺し、適正な接触圧を確保
することが可能である。In the female terminal fitting of the type in which the leg portion 16 extending from the folded portion 15 abuts against the bottom wall 13 and the elastic contact piece 12 is elastically bent using the leg portion 16 as one of the fulcrums as in the present embodiment, As the length of the leg portion 16 becomes shorter, the amount of bending (stress) of the folded portion 15 becomes larger, and the tab T and the projection 1
The contact pressure with the female terminal 8 also increases. However, in such a female terminal fitting 10, when there is a situation that the length of the leg 16 needs to be shortened (for example, from the locking hole 20 to the square cylindrical portion). 11 to the front end of the female terminal fitting 10
If you want to make the whole more compact)
If the position of the projection 18 is shifted forward from the uppermost point 15A of the folded portion 15 as in the present embodiment, an increase in the contact pressure due to the shortening of the leg 16 is offset, and an appropriate contact pressure is ensured. Is possible.
【００１８】［実施形態２］次に、本発明を具体化した
実施形態２を図５及び図６を参照して説明する。本実施
形態２の雌端子金具３０は、雄端子金具のタブＴを前方
から迎え入れる角筒部３１と、この角筒部３１内に設け
た弾性接触片３２とからなる。弾性接触片３２は、角筒
部３１の底壁３３を基端３４として斜め前上方に延出し
てその延出端を下方へ弧状に折り返すとともに、この折
り返し部３５から戻り方向に延出した脚部３６の先端３
７を底壁３３に当接させたものである。また、折り返し
部３５の上面には、折り返し部３５よりも曲率半径の小
さい略球面状をなし、タブＴと接触可能な突起３８が形
成されている。Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. The female terminal fitting 30 according to the second embodiment includes a square tube portion 31 that receives the tab T of the male terminal member from the front, and an elastic contact piece 32 provided in the square tube portion 31. The elastic contact piece 32 extends obliquely forward and upward with the bottom wall 33 of the rectangular tube portion 31 as a base end 34, and its extended end is bent downward in an arc shape, and the leg extended from the folded portion 35 in the return direction. Tip 3 of part 36
7 is in contact with the bottom wall 33. Further, on the upper surface of the folded portion 35, a projection 38 which has a substantially spherical shape with a smaller radius of curvature than that of the folded portion 35 and which can contact the tab T is formed.
【００１９】角筒部３１にタブＴが挿入されると、その
タブＴは角筒部３１の天井面３９に摺接するとともに突
起３８の上面に係合してこれを押し下げる。これによ
り、弾性接触片３２は、その底壁３３上の基端３４及び
脚部３６の底壁３３への当接部３７を２つの支点とし
て、底壁３３に接近するように全体として下方へ変位す
るとともに、折り返し部３５がその弧の曲率半径を小さ
くするように弾性撓みするようになっている。そして、
この折り返し部３５の弾性復元力により、タブＴと突起
３８との間では所定の接触圧が確保される。また、タブ
Ｔは、弾性接触片３２と面接触されるのではなく、突起
３８に対して点接触するようになっているので、突起３
８とタブＴとの接触面積は極小となり、弾性接触片３２
の撓み応力が小さくても必要な圧力が確保される。ま
た、この点接触の形態は、タブＴの挿抜に際して摺動抵
抗を低減することにも寄与している。When the tab T is inserted into the rectangular tube portion 31, the tab T slides on the ceiling surface 39 of the rectangular tube portion 31 and engages with the upper surface of the projection 38 to push it down. As a result, the elastic contact piece 32 is moved downward as a whole so as to approach the bottom wall 33 with the base end 34 on the bottom wall 33 and the contact portion 37 of the leg 36 with the bottom wall 33 serving as two fulcrums. At the same time, the folded portion 35 elastically bends so as to reduce the radius of curvature of the arc. And
A predetermined contact pressure is secured between the tab T and the projection 38 by the elastic restoring force of the folded portion 35. Further, since the tab T is not in surface contact with the elastic contact piece 32 but in point contact with the projection 38, the projection 3
8 and the tab T are minimized, and the elastic contact pieces 32
The required pressure is ensured even if the bending stress of is small. In addition, this point contact form also contributes to reducing the sliding resistance when inserting and removing the tab T.
【００２０】さて、本実施形態では、タブＴが当接する
突起３８の位置は、タブＴの挿抜方向において折り返し
部３５の最上点３５Ａ（最も高い位置）から後方へ外れ
た位置に設定されている。即ち、突起３８は、折り返し
部３５から延びる後下がりの傾斜面３５Ｂから斜め上後
方へ盛り上がった形態とされている。また、突起３８の
タブＴとの対向面３８Ａは、側方から視て、折り返し部
３５の弧状外面３５Ｃに対して接線状に連なって連続す
る形態とされている。即ち、突起３８の上端から折り返
し部３５の前面側の弧状外面３５Ｃに亘るタブＴとの対
向面３８Ａは、凹凸や段差などがなく、また、タブＴの
挿入方向に対する傾斜角度も比較的小さい角度となって
いる。In the present embodiment, the position of the projection 38 with which the tab T abuts is set at a position displaced rearward from the uppermost point 35A (highest position) of the folded portion 35 in the insertion / removal direction of the tab T. . In other words, the protrusion 38 is formed to swell obliquely upward and rearward from the rearwardly inclined surface 35B extending from the folded portion 35. Further, the surface 38A of the projection 38 facing the tab T has a form in which it is tangentially continuous with the arcuate outer surface 35C of the folded portion 35 when viewed from the side. That is, the surface 38A facing the tab T, which extends from the upper end of the projection 38 to the arc-shaped outer surface 35C on the front side of the folded portion 35, has no irregularities or steps, and has a relatively small angle of inclination with respect to the insertion direction of the tab T. It has become.
【００２１】図６に鎖線で示すように折り返し部３５の
頂上位置に配置されて折り返し部３５よりも曲率半径の
小さい弧状に盛り上がっている突起１３８の場合には、
挿入されるタブＴに対する対向面１３８Ａの傾斜角度が
急角度であり、挿入されたタブＴの先端がこの突起１３
８の対向面１３８Ａに突き当たって引っ掛かりを生じさ
せる虞がある。これに対し、本実施形態のものでは、突
起３８を折り返し部３５の最上点３５Ａよりも後方に配
置するとともに、その突起３８のタブＴとの対向面３８
Ａを折り返し部３５の前面側の弧状外面３５Ｃに対して
接線状に連続させるようにしたので、タブＴの挿入方向
に対する突起３８の対向面３８Ａの傾斜角度が小さく、
タブＴの先端が突き当たることを防止することができ
る。As shown by a chain line in FIG. 6, in the case of the projection 138 which is arranged at the top of the folded portion 35 and rises in an arc shape having a smaller radius of curvature than the folded portion 35,
The inclination angle of the facing surface 138A with respect to the inserted tab T is a steep angle, and the tip of the inserted tab T is
There is a possibility that the robot may hit the opposite surface 138 </ b> A of FIG. On the other hand, in the present embodiment, the projection 38 is disposed behind the uppermost point 35A of the folded portion 35, and the projection 38 has a surface 38 facing the tab T.
A is tangentially continuous with the arcuate outer surface 35C on the front side of the folded portion 35, so that the inclination angle of the facing surface 38A of the projection 38 with respect to the insertion direction of the tab T is small,
It is possible to prevent the tip of the tab T from abutting.
【００２２】また、突起３８を折り返し部３５の最上点
３５Ａよりも後方へずれた位置に配置している本実施形
態２の雌端子金具３０を、折り返し部３５の最上位置３
５Ａに突起１３８を配置した場合と比べると、両突起３
８，１３８が同じ高さであると想定した場合、タブＴの
挿入時における折り返し部３５の撓み量（弾性復元力）
は本実施形態２のものの方が大きくなり（詳しくは上記
実施形態１を参照）、したがって、突起３８とタブＴと
の接触圧を大きくすることができる。尚、接触圧を高め
る手段としては、突起３８の位置を最上点３５Ａに位置
させたままで脚部３６の長さを短くすることも考えられ
る。しかし、脚部３６を短くすると、脚部３６の底壁３
３に対する傾斜角度がきつくなり、弾性接触片３０の撓
みに伴って脚部３６の先端３７が底壁３３上で摺接する
動作が阻害され、その結果、弾性接触片３０の撓み動作
が円滑に行われなくなる虞がある。また、脚部３６の傾
斜角度を小さくすれば、折り返し部３５の高さが低くな
って撓み代を十分確保できなくなる虞がある。これに対
し、本実施形態２では、脚部３６の長さを短くする必要
がないので、脚部３６の短尺化に起因して上記不具合を
招くことがない。The female terminal fitting 30 of the second embodiment, in which the projection 38 is disposed at a position shifted rearward from the uppermost point 35A of the folded portion 35, is moved to the uppermost position 3 of the folded portion 35.
5A, both protrusions 3
Assuming that the heights 8, 138 are the same, the amount of bending of the folded portion 35 when the tab T is inserted (elastic restoring force)
Is larger in the second embodiment (for details, see the first embodiment), so that the contact pressure between the projection 38 and the tab T can be increased. As a means for increasing the contact pressure, it is conceivable to shorten the length of the leg 36 while keeping the position of the projection 38 at the uppermost point 35A. However, when the leg 36 is shortened, the bottom wall 3 of the leg 36
3, the operation of the distal end 37 of the leg 36 sliding on the bottom wall 33 is hindered by the bending of the elastic contact piece 30, and as a result, the bending operation of the elastic contact piece 30 proceeds smoothly. There is a possibility that it will not be done. In addition, if the inclination angle of the leg portion 36 is reduced, the height of the folded portion 35 may be reduced, and a sufficient bending margin may not be secured. On the other hand, in the second embodiment, since it is not necessary to shorten the length of the leg portion 36, the above-described problem does not occur due to the shortening of the leg portion 36.
【００２３】［他の実施形態］本発明は上記記述及び図
面によって説明した実施形態に限定されるものではな
く、例えば次のような実施態様も本発明の技術的範囲に
含まれ、さらに、下記以外にも要旨を逸脱しない範囲内
で種々変更して実施することができる。 （１）上記実施形態３では突起のタブとの対向面を折り
返し部の弧状外面に対して接線状に連続させるようにし
たが、本発明によれば、突起が折り返し部の最上点より
も後方の位置でその折り返し部の弧状外面から独立して
盛り上がる形態としてもよい。この場合でも、突起が折
り返し部の最上点に位置するものに比べると、タブとの
対向斜面の傾斜角度が小さくなるので、タブの突き当た
り防止効果は十分期待できる。[Other Embodiments] The present invention is not limited to the embodiment described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the third embodiment, the surface of the protrusion facing the tab is tangentially continuous with the arc-shaped outer surface of the folded portion. However, according to the present invention, the protrusion is located behind the uppermost point of the folded portion. The position may be raised independently of the arcuate outer surface of the folded portion. Even in this case, since the inclination angle of the slope facing the tab is smaller than that in which the protrusion is located at the uppermost point of the folded portion, the effect of preventing the tab from abutting can be sufficiently expected.
【図１】実施形態１の雌端子金具と雄端子金具のタブの
非挿入状態を示す断面図FIG. 1 is a sectional view showing a non-inserted state of tabs of a female terminal fitting and a male terminal fitting of a first embodiment.
【図２】雌端子金具にタブを挿入した状態を示す断面図FIG. 2 is a sectional view showing a state where a tab is inserted into a female terminal fitting.
【図３】突起の形態を示す部分拡大断面図FIG. 3 is a partially enlarged sectional view showing a form of a protrusion.
【図４】突起の位置による弾性接触片の撓み状態の相違
を説明するための概念図FIG. 4 is a conceptual diagram for explaining a difference in a bending state of an elastic contact piece depending on a position of a protrusion.
【図５】実施形態２の雌端子金具と雄端子金具のタブと
の非挿入状態を示す断面図FIG. 5 is a cross-sectional view showing a non-inserted state of the female terminal fitting and the tab of the male terminal fitting according to the second embodiment.
【図６】突起の形態を示す部分拡大断面図FIG. 6 is a partially enlarged sectional view showing a form of a projection.
【図７】従来例の断面図FIG. 7 is a sectional view of a conventional example.
Ｔ…タブ １０…雌端子金具 １１…角筒部 １２…弾性接触片 １３…底壁 １４…基端 １５…折り返し部 １５Ａ…最上点 １６…脚部 １７…当接部 １８…突起 ３０…雌端子金具 ３１…角筒部 ３３…底壁 ３２…弾性接触片 ３４…基端 ３５…折り返し部 ３５Ａ…最上点 ３５Ｃ…弧状外面 ３６…脚部 ３７…当接部 ３８…突起 ３８Ａ…タブとの対向面 T ... tab 10 ... female terminal fitting 11 ... square tube part 12 ... elastic contact piece 13 ... bottom wall 14 ... base end 15 ... returned part 15A ... top point 16 ... leg 17 ... contact part 18 ... projection 30 ... female terminal Metal fittings 31 ... Square tube part 33 ... Bottom wall 32 ... Elastic contact piece 34 ... Base end 35 ... Folded part 35A ... Top point 35C ... Arc-shaped outer surface 36 ... Leg 37 ... Contact part 38 ... Projection 38A ... Opposite surface with tab
Claims (2)
筒部と、 この筒部の底壁を基端として斜め前上方に延出してその
延出端を下方へ弧状に折り返すとともに、この折り返し
部から戻り方向に延出した脚部の先端を前記底壁に当接
させ、且つ前記折り返し部の上面に前記タブと接触可能
な突起を形成してなる弾性接触片とを備えてなり、 前記筒部に挿入された前記タブが前記突起に対して摺接
しつつ押さえ付けることで、前記弾性接触片が、その底
壁上の前記基点及び前記脚部の前記底壁への当接部を２
支点として弾性撓みするようにした雌端子金具であっ
て、 前記タブの挿抜方向において前記突起が前記折り返し部
の最上点から外れた位置にあることを特徴とする雌端子
金具。1. A cylindrical portion for receiving a tab of a male terminal fitting from the front, extending obliquely forward and upward with a bottom wall of the cylindrical portion as a base end, and bending the extended end downward in an arc shape. An elastic contact piece formed by contacting a tip of a leg extending in a return direction from the bottom wall with the bottom wall, and forming a projection capable of contacting the tab on an upper surface of the folded portion; When the tab inserted into the projection is pressed against the projection while sliding against the projection, the resilient contact piece causes the base portion on the bottom wall and the contact portion of the leg to contact the bottom wall by two.
A female terminal fitting elastically bent as a fulcrum, wherein the projection is located at a position deviated from an uppermost point of the folded portion in a direction of insertion and removal of the tab.
後方へずれた位置にあり、且つその突起の前記タブとの
対向面が前記折り返し部の弧状外面に対して接線状に連
続していることを特徴とする請求項１記載の雌端子金
具。2. The projection is located at a position deviated rearward from an uppermost point of the folded portion, and a surface of the projection facing the tab is tangentially continuous to an arc-shaped outer surface of the folded portion. The female terminal fitting according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10310326A JP2000133355A (en) | 1998-10-30 | 1998-10-30 | Female terminal metal piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10310326A JP2000133355A (en) | 1998-10-30 | 1998-10-30 | Female terminal metal piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000133355A true JP2000133355A (en) | 2000-05-12 |
Family
ID=18003898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10310326A Pending JP2000133355A (en) | 1998-10-30 | 1998-10-30 | Female terminal metal piece |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000133355A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7101233B2 (en) | 2003-11-07 | 2006-09-05 | Sumitomo Wiring Systems, Ltd. | Female terminal fitting |
| DE10322976B4 (en) * | 2002-05-24 | 2013-01-17 | Sumitomo Wiring Systems, Ltd. | Socket contact and method of forming the same |
| CN105322336A (en) * | 2014-06-02 | 2016-02-10 | 星电株式会社 | Connector |
-
1998
- 1998-10-30 JP JP10310326A patent/JP2000133355A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10322976B4 (en) * | 2002-05-24 | 2013-01-17 | Sumitomo Wiring Systems, Ltd. | Socket contact and method of forming the same |
| US7101233B2 (en) | 2003-11-07 | 2006-09-05 | Sumitomo Wiring Systems, Ltd. | Female terminal fitting |
| CN105322336A (en) * | 2014-06-02 | 2016-02-10 | 星电株式会社 | Connector |
| CN105322336B (en) * | 2014-06-02 | 2019-06-21 | 星电株式会社 | Connector |
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