JP2011210592A - Terminal fitting - Google Patents

Terminal fitting Download PDF

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JP2011210592A
JP2011210592A JP2010078111A JP2010078111A JP2011210592A JP 2011210592 A JP2011210592 A JP 2011210592A JP 2010078111 A JP2010078111 A JP 2010078111A JP 2010078111 A JP2010078111 A JP 2010078111A JP 2011210592 A JP2011210592 A JP 2011210592A
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barrel
electric wire
bottom wall
insulating
terminal
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JP5505033B2 (en
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Akihito Serizawa
昭仁 芹澤
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Abstract

PROBLEM TO BE SOLVED: To improve retaining force of an electric wire in addition to stress relaxing to a core.SOLUTION: A rear barrel 50 arranged on an outer side terminal 30 of a shield terminal 20 has a shape in which a pair of barrel pieces 52L, 52R are raised from both right and left side edges of a bottom wall 51. Both of the barrel pieces 52L, 52R overlap their protrusion ends and are caulked as if holding an insulating outer cover 14 of the shield electric wire 10 mounted on the bottom wall 51 from both right and left sides. Protrusions 60 respectively having shear surfaces 61 along a direction perpendicular to an axial direction of the shield electric wire 10 on a front edge and shear surfaces 62 along the axial direction on opposite side edges are formed by cutting and raising in positions on both sides across a center in a width direction of the bottom wall 51 of the rear barrel 50.

Description

本発明は、電線を圧着するバレルを備えた端子金具に関する。   The present invention relates to a terminal fitting including a barrel for crimping an electric wire.

シールド電線の端末に接続されるシールド端子として、特許文献1に記載されたものが知られている。このものは、相手の端子と接続される内側端子と、この内側端子を誘電体を介在させた状態で収容した外側端子とを備えており、内側端子がシールド電線の芯線の端末に圧着され、外側端子に設けられた前後のバレルのうち前側のバレルが編組線の端末に、後側のバレルが絶縁外皮の端末にそれぞれかしめ圧着された構造である。
ここでこの種のシールド端子では、シールド電線に引張力が作用した場合の抜けを有効に阻止できるように、シールド電線との間の固着力を大きく取ることが重要な課題の一つであり、当該従来技術のものでは、外側端子における絶縁外皮に対する保持力を高めるようにしている。
The thing described in patent documents 1 is known as a shield terminal connected to the end of a shielded electric wire. This is provided with an inner terminal connected to the other terminal and an outer terminal accommodated with the inner terminal interposed with a dielectric, and the inner terminal is crimped to the end of the core wire of the shielded electric wire, Of the front and rear barrels provided on the outer terminal, the front barrel is crimped to the end of the braided wire, and the rear barrel is crimped to the end of the insulating sheath.
Here, in this type of shield terminal, one of the important issues is to obtain a large fixing force between the shielded wire and the shielded wire so that it can effectively be prevented from coming off when a tensile force is applied to the shielded wire. In the prior art, the holding force of the outer terminal with respect to the insulating skin is increased.

絶縁外皮1を保持する部分では、図8に示すように、インシュレーションバレルである後側のバレル3が、底壁4の左右両側縁から一対のバレル片5が立ち上がり形成された形状となっていて、両バレル片5はそれぞれの突出端を重ね合わせつつ絶縁外皮1の外周を左右両側から抱き込むようにしてかしめられる。ここで、同バレル3の底壁4の中央部には突起6が前方を向いて切り起こし形成されていて、上記したかしめ圧着に伴い突起6が絶縁外皮1に食い込いこんで後方への引っ張りに対する引っ掛かりとなり、もって電線の抜け防止すなわち保持力の向上を図っている。   As shown in FIG. 8, the rear barrel 3, which is an insulation barrel, has a shape in which a pair of barrel pieces 5 rise from the left and right side edges of the bottom wall 4 in the portion that holds the insulating skin 1. Thus, both barrel pieces 5 are caulked so as to embrace the outer periphery of the insulating skin 1 from both the left and right sides while overlapping the protruding ends. Here, a projection 6 is formed by cutting and raising at the center of the bottom wall 4 of the barrel 3 so that the projection 6 bites into the insulating outer skin 1 and pulls backward by the caulking and crimping described above. Therefore, the wire is prevented from coming off, that is, the holding force is improved.

特開2006−79922号公報JP 2006-79922 A

一方バレル3自身による保持力を高めるには、高圧縮でかしめを行うことになるが、その場合芯線2の破断に繋がるおそれがある。特に上記のように底壁4の中央部に突起6が形成されていると、図8の矢線aに示すように、上下両側からの圧縮力がより一層高まって芯線2が破断する可能性が高くなるため、さらなる改良が切望されていた。
本発明は上記のような事情に基づいて完成されたものであって、その目的は、芯線への応力緩和を図った上で電線の抜け止め力を向上させるところにある。
On the other hand, in order to increase the holding force by the barrel 3 itself, caulking is performed with high compression. In this case, the core wire 2 may be broken. In particular, when the protrusion 6 is formed at the center portion of the bottom wall 4 as described above, the compressive force from both the upper and lower sides may further increase and the core wire 2 may break as shown by the arrow line a in FIG. Therefore, further improvement was eagerly desired.
The present invention has been completed based on the above circumstances, and an object of the present invention is to improve the retaining force of the electric wire while reducing the stress on the core wire.

本発明は、底壁の側縁からバレル片が立ち上がり形成されてなるバレルを備え、前記底壁に載置された電線の絶縁被覆に対し前記バレル片を巻き付けるようにかしめることで前記電線を圧着するようにした端子金具において、前記バレルの前記底壁における幅方向の中心を挟んだ両側の位置には、前記電線の軸線方向と直交する方向に沿ったせん断面を前縁に、前記軸線方向に沿ったせん断面を対向する側縁にそれぞれ有する突起が切り起こしにより形成されているところに特徴を有する。   The present invention includes a barrel formed by rising a barrel piece from a side edge of the bottom wall, and caulking the barrel piece around the insulation coating of the electric wire placed on the bottom wall so as to wind the wire. In the terminal fitting that is to be crimped, at the positions on both sides of the bottom wall of the barrel across the center in the width direction, with the shear plane along the direction perpendicular to the axial direction of the wire as the leading edge, the axis line It has a feature in that protrusions each having a shearing surface along the direction on opposite side edges are formed by cutting and raising.

バレル片が絶縁被覆に巻き付くようにしてバレルがかしめられると、それに伴って底壁に設けられた一対の突起が絶縁被覆に食い込み、両突起における電線の軸線方向と直交する方向のせん断面が、後方への引っ張りに対する引っ掛かりとなり、また、かしめ動作に伴って両突起の間隔が狭まってそれぞれの電線の軸線方向に沿ったせん断面の間に絶縁被覆の外周部が挟まれる。これにより、電線の抜け止め力が向上する。また、両突起の形成位置が、芯線を挟んでかしめ力が作用する位置とは正反対となる位置からは側方にずれているから、芯線に作用する圧縮力すなわち応力が緩和され、同芯線が破断することを未然に防止できる。   When the barrel is caulked so that the barrel piece wraps around the insulation coating, a pair of projections provided on the bottom wall bite into the insulation coating, and the shear surface in the direction perpendicular to the axial direction of the electric wire in both projections. In addition, it becomes a catch against the rearward pulling, and the interval between the two protrusions is narrowed with the caulking operation, and the outer peripheral portion of the insulating coating is sandwiched between the shear surfaces along the axial direction of each electric wire. Thereby, the retaining force of the electric wire is improved. In addition, the formation position of both protrusions is shifted laterally from the position opposite to the position where the caulking force acts across the core wire, so that the compressive force, that is, the stress acting on the core wire is relaxed, and the concentric wire is Breaking can be prevented in advance.

また、以下のような構成としてもよい。
(1)前記バレルは、前記底壁の左右両側縁から一対のバレル片が立ち上がり形成された形状であって、両バレル片がそれぞれの突出端を重ね合わせつつ前記絶縁被覆の外周を左右両側から抱き込むようにしてかしめられるようになっており、前記底壁の左右の側縁付近に前記突起が対称形状をなして形成されている。両バレル片はいわゆる径方向にオーバラップしてかしめられ、両突起は各バレル片の根元付近において絶縁被覆に食い込むようになる。電線の軸線を挟んだ左右両側においてバランスの取れた抜け止め力を得ることができる。
The following configuration may also be used.
(1) The barrel has a shape in which a pair of barrel pieces rises from the left and right side edges of the bottom wall, and both barrel pieces overlap the projecting ends of the outer periphery of the insulating coating from the left and right sides. The projection is formed in a symmetrical shape near the left and right side edges of the bottom wall. Both barrel pieces are caulked in a so-called radial direction, and both protrusions bite into the insulation coating near the base of each barrel piece. A balanced retaining force can be obtained on both the left and right sides of the wire axis.

(2)いずれか一方のバレル片の突出端側の内面には、当該突出端を内方に屈曲しやすくするべく溝が形成されている。両バレル片が圧着機によりいわゆるオーバラップしてかしめられる場合に、一方のバレル片の突出端が先に内方に屈曲して他方のバレル片の内側に潜り込むようになり、もってオーバラップ形式のかしめ圧着がスムーズに行われる。
(3)前記電線が、芯線、絶縁内皮、シールド層及び絶縁外皮を内側から同心に配したシールド電線であって、前記バレルが前記絶縁外皮にかしめられる。シールド電線に有効に適用できる。
(2) A groove is formed on the inner surface of one of the barrel pieces on the protruding end side so that the protruding end is easily bent inward. When both barrel pieces are so-called overlapped and crimped by a crimping machine, the protruding end of one barrel piece bends inward first and enters into the inside of the other barrel piece. Caulking and crimping is performed smoothly.
(3) The electric wire is a shielded electric wire in which a core wire, an insulating inner skin, a shield layer, and an insulating outer skin are arranged concentrically from the inside, and the barrel is caulked to the insulating outer skin. It can be effectively applied to shielded wires.

本発明によれば、芯線への応力緩和を図った上で電線の抜け止め力を向上させることができる。   ADVANTAGE OF THE INVENTION According to this invention, after easing the stress to a core wire, the electric wire retaining force can be improved.

本発明の実施形態1に係る外側端子の製造態様を示す平面図The top view which shows the manufacture aspect of the outer side terminal which concerns on Embodiment 1 of this invention. 外側端子の後バレルの拡大平面図Enlarged plan view of the rear barrel of the outer terminal 図2のIII−III線断面図Sectional view taken along line III-III in FIG. シールド電線の端末にシールド端子が接続された状態の断面図Sectional view with shield terminal connected to the end of shielded wire 絶縁外皮に後バレルがかしめられた状態の断面図Sectional view of the state where the rear barrel is caulked against the insulating skin シールド端子がコネクタハウジングに収容された状態の断面図Sectional view of shield terminal housed in connector housing 実施形態2に係る外側端子の後バレルの拡大平面図The enlarged plan view of the rear barrel of the outer terminal according to the second embodiment 従来例の絶縁外皮にバレルがかしめられた状態の断面図Sectional drawing of barrel with caulked to insulation shell of conventional example

<実施形態1>
本発明の実施形態1を図1ないし図6によって説明する。この実施形態では、シールド電線10の端末に接続されるシールド端子20を例示している。
シールド電線10は、図4に示すように、軸心側から順に、芯線11、絶縁内皮12、編組線13(シールド層)、絶縁外皮14を同心に備えた公知構造のものであり、端末では、これらが順次に露出された状態に形成されている。
シールド端子20は雌側であって、同じく図4に示すように、シールド電線10の芯線11に接続される内側端子21の回りに、絶縁材からなる誘電体25を介して、外側端子30が配された構造である。外側端子30には、シールド電線10における編組線13と絶縁外皮14の端末がそれぞれ接続されている。
<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the shield terminal 20 connected to the terminal of the shielded electric wire 10 is illustrated.
As shown in FIG. 4, the shielded electric wire 10 has a known structure including a core wire 11, an insulating endothelium 12, a braided wire 13 (shield layer), and an insulating outer sheath 14 in order from the axial center side. These are formed so as to be sequentially exposed.
As shown in FIG. 4, the shield terminal 20 is a female side, and the outer terminal 30 is provided around the inner terminal 21 connected to the core wire 11 of the shielded electric wire 10 via a dielectric 25 made of an insulating material. It is an arranged structure. The outer terminal 30 is connected to the braided wire 13 and the end of the insulating sheath 14 in the shielded electric wire 10.

外側端子30は、図1に示すように、導電性に優れた金属板からなるフープ材をプレス成形して所定の切断、曲げ加工及び叩き出し加工等を施すことによって製造され、全体としては角筒形をなす本体部31の後方に、前後2個のバレル40,50が設けられた構造である。
本体部31は、誘電体25の回りに間隔を開けて嵌着されるようになっており、図4に示すように、底板の前縁側に、コネクタハウジング70のキャビティ71に設けられたランス72に係止する一次係止突部32が、天井板の後縁に、リテーナ73に係止する二次係止突部33がそれぞれ形成されている。
As shown in FIG. 1, the outer terminal 30 is manufactured by press-forming a hoop material made of a metal plate having excellent conductivity and performing predetermined cutting, bending processing, knocking processing, and the like. This is a structure in which two barrels 40 and 50 are provided at the rear of the cylindrical main body 31.
The main body 31 is fitted around the dielectric 25 with a space therebetween, and as shown in FIG. 4, a lance 72 provided in the cavity 71 of the connector housing 70 on the front edge side of the bottom plate. A primary locking projection 32 that locks to the retainer 73 is formed on the rear edge of the ceiling plate, and a secondary locking projection 33 that locks to the retainer 73 is formed.

前側のバレル40(以下、前バレル40)は、シールド電線10における露出した編組線13の端末にかしめ圧着されるものである。前バレル40は、円弧形に形成された底壁41の左右両側縁から、相対的に幅広でかつ背の低い左右一対のバレル片42L,42Rが立ち上がり形成された形状であって、両バレル片42L,42Rがそれぞれの突出端を重ね合わせつつ編組線13の外周を左右両側から抱き込むようにして、すなわち径方向にオーバラップしてかしめられる。   The front barrel 40 (hereinafter, front barrel 40) is crimped and crimped to the exposed end of the braided wire 13 in the shielded electric wire 10. The front barrel 40 has a shape in which a pair of left and right barrel pieces 42L and 42R that are relatively wide and short are raised from left and right side edges of a bottom wall 41 formed in an arc shape. The pieces 42L and 42R are caulked so as to embrace the outer periphery of the braided wire 13 from the left and right sides while overlapping the protruding ends, that is, in the radial direction.

この実施形態では、正面視右側のバレル片42R(以下、右バレル片42R)が左側のバレル片42L(以下、左バレル片42L)の内側に重なる設定となっており、そのため両バレル片42L,42Rがかしめられる際に右バレル片42Rの突出端が先に内方に屈曲して左バレル片42Lの内側に潜り込むことができるように、右バレル片42Rの突出端部の裏面には、屈曲を促す溝43が全幅に亘って形成されている。また、編組線13の外周面に接触する領域であるところの、右バレル片42Rの突出端部から底壁41を通って左バレル片42Lのほぼ中央高さ位置に至る領域には、ローレット目44(綾目)が形成されている。
さらに、底壁41の中央部と、右バレル片42Rの中央高さ部とには、それぞれシールド電線10の軸線方向と直交する方向に細長い長孔45が開口されている。
In this embodiment, the right side barrel piece 42R (hereinafter, right barrel piece 42R) is set so as to overlap the inside of the left side barrel piece 42L (hereinafter, left barrel piece 42L). The rear end of the protruding end of the right barrel piece 42R is bent so that the protruding end of the right barrel piece 42R can be bent inward first and can enter inside the left barrel piece 42L when the 42R is caulked. A groove 43 is formed across the entire width. Further, in the region that is in contact with the outer peripheral surface of the braided wire 13, the region extending from the protruding end of the right barrel piece 42R through the bottom wall 41 to the substantially central height position of the left barrel piece 42L is knurled. 44 (Ayame) is formed.
Further, elongated holes 45 are opened in the center portion of the bottom wall 41 and the center height portion of the right barrel piece 42R in the direction orthogonal to the axial direction of the shielded electric wire 10.

後側のバレル50(以下、後バレル50)は、シールド電線10における絶縁外皮14の端末にかしめ圧着されるものである。後バレル50は、図3にも示すように、同じく円弧形に形成された底壁51の左右両側縁から、前バレル40のバレル片42L,42Rと比べて幅狭でかつ背の高い左右一対のバレル片52L,52Rが立ち上がり形成された形状であって、両バレル片52L,52Rがそれぞれの突出端を重ね合わせつつ絶縁外皮14の外周を左右両側から抱き込むようにして、径方向にオーバラップしてかしめられるようになっている。   The rear barrel 50 (hereinafter referred to as the rear barrel 50) is caulked and crimped to the end of the insulating sheath 14 of the shielded electric wire 10. As shown in FIG. 3, the rear barrel 50 is narrower and taller than the barrel pieces 42 </ b> L and 42 </ b> R of the front barrel 40 from the left and right side edges of the bottom wall 51 that is also formed in an arc shape. A pair of barrel pieces 52L and 52R are formed in a rising shape, and both barrel pieces 52L and 52R overlap in the radial direction so as to embrace the outer periphery of the insulating outer skin 14 from both the left and right sides while overlapping their protruding ends. It can be caulked.

後バレル50では、上記した前バレル40とは逆に、正面から見た左側のバレル片52L(以下、左バレル片52L)が右側のバレル片52R(以下、右バレル片52R)の内側に重なる設定となっており、そのため両バレル片52L,52Rがかしめられる際に左バレル片52Lの突出端が先に内方に屈曲して右バレル片52Rの内側に潜り込むことができるように、左バレル片52Lの突出端部の裏面に、屈曲を促す溝53が全幅に亘って形成されている。また、絶縁外皮14の外周面に接触する領域であるところの、左バレル片52Lの突出端部から底壁51を通って右バレル片52Rの突出端部寄りの位置に至る領域には、ローレット目54(綾目)が形成されている。
ただし、底壁51における左右両側縁部の所定領域、例えば底壁51の全幅の略1/3ずつの幅領域には、ローレット目が形成されておらず、突起60の形成領域55となっている。
In the rear barrel 50, contrary to the front barrel 40 described above, the left barrel piece 52L (hereinafter, left barrel piece 52L) viewed from the front overlaps the inside of the right barrel piece 52R (hereinafter, right barrel piece 52R). Therefore, when both barrel pieces 52L and 52R are caulked, the protruding end of the left barrel piece 52L is bent inward first and can enter the inside of the right barrel piece 52R. On the back surface of the protruding end portion of the piece 52L, a groove 53 that facilitates bending is formed over the entire width. Further, in a region that is in contact with the outer peripheral surface of the insulating outer shell 14, a region extending from the protruding end portion of the left barrel piece 52L through the bottom wall 51 to a position near the protruding end portion of the right barrel piece 52R is knurled. Eyes 54 (twill) are formed.
However, knurled eyes are not formed in a predetermined region of the left and right side edge portions of the bottom wall 51, for example, a width region of approximately 1/3 of the entire width of the bottom wall 51, and becomes a formation region 55 of the protrusion 60. Yes.

さて、上記した各形成領域55には、シールド電線10、特に絶縁外皮14の後方への抜けを規制することに機能する突起60が形成されている。各突起60は、図2,3に示すように、底壁51の幅方向の中心から左右同寸法離間した位置において、切り起こしにより内面側に突出するように形成されている。各突起60はより詳細には、シールド電線10の軸線方向と直交する方向に沿ったせん断面61を前縁に、軸線方向に沿ったせん断面62を対向する側縁にそれぞれ有する平面三角形をなす対称形状に形成されている。   Now, in each of the formation regions 55 described above, a projection 60 is formed that functions to restrict the shield wire 10, particularly the insulation sheath 14 from being pulled backward. As shown in FIGS. 2 and 3, each protrusion 60 is formed so as to protrude to the inner surface side by cutting and raising at a position spaced from the center in the width direction of the bottom wall 51 by the same size. More specifically, each protrusion 60 forms a plane triangle having a shear surface 61 along the direction orthogonal to the axial direction of the shielded electric wire 10 as a front edge and a shear surface 62 along the axial direction at the opposite side edge. It is formed symmetrically.

シールド電線10の端末にシールド端子20を接続する工程は、以下のようである。シールド電線10の端末処理として、絶縁外皮14を皮剥きして編組線13を露出させるとともに、絶縁内皮12を皮剥きして芯線11を露出させる。この露出された芯線11の端末に対して、内側端子21が圧着されて接続される。
一方、外側端子30の本体部31内には誘電体25が予め収容され、この誘電体25内に、上記した芯線11の端末に接続された内側端子21が抜け止めされて装着される。これに伴い、シールド電線10における編組線13の端末が前バレル40の底壁41に、また絶縁外皮14の端末が後バレル50の底壁51にそれぞれ載置された状態となる。
The process of connecting the shield terminal 20 to the end of the shielded electric wire 10 is as follows. As the terminal treatment of the shielded electric wire 10, the insulating outer skin 14 is peeled to expose the braided wire 13, and the insulating inner skin 12 is peeled to expose the core wire 11. The inner terminal 21 is crimped and connected to the exposed end of the core wire 11.
On the other hand, the dielectric 25 is accommodated in advance in the main body 31 of the outer terminal 30, and the inner terminal 21 connected to the terminal of the core wire 11 is prevented from being attached to the dielectric 25. Accordingly, the end of the braided wire 13 in the shielded electric wire 10 is placed on the bottom wall 41 of the front barrel 40, and the end of the insulating sheath 14 is placed on the bottom wall 51 of the rear barrel 50.

このようにシールド電線10の端末にシールド端子20が組み付けられたら、外側端子30の前後のバレル40,50を圧着するべく圧着機に掛けられる。圧着機には、アンビルと同アンビルの上方で上下動するクリンパとが設けられており、前バレル40と後バレル50とは、対応するアンビルとクリンパとの間で挟圧されてかしめられる。   When the shield terminal 20 is assembled to the end of the shielded electric wire 10 in this manner, the barrels 40 and 50 before and after the outer terminal 30 are hung on a crimping machine. The crimping machine is provided with an anvil and a crimper that moves up and down above the anvil, and the front barrel 40 and the rear barrel 50 are clamped between the corresponding anvil and crimper.

前バレル40は、左右のバレル片42L,42Rがオーバラップ形式で編組線13の外周を左右両側から抱き込むようにしてかしめられる。ここで、クリンパの下降動作の初期においてバレル片42L,42Rの突出端に当たった際に、正面視の右バレル片42Rの突出端が溝43の部分から内方に屈曲するため、同右バレル片42Rが左バレル片42Lの内側に潜り込むようにしてオーバラップしつつかしめられる。その結果、前バレル40の内面に形成されたローレット目44が編組線13の外周の全周に亘って押し付けられるとともに、上下2箇所において、長孔45が編組線13の外周に食い込むことによって、編組線13の端末は抜け止め力が強化された状態で圧着固定される。
なお、下面側の長孔45は外部に開口しているから、同長孔45を通して目視することにより編組線13が正規にかしめられているか否かが確認できる。
The front barrel 40 is caulked in such a manner that the left and right barrel pieces 42L and 42R embrace the outer circumference of the braided wire 13 from both the left and right sides in an overlapping manner. Here, since the protruding end of the right barrel piece 42R in front view bends inward from the groove 43 when it hits the protruding end of the barrel pieces 42L and 42R in the initial stage of the lowering operation of the crimper, the right barrel piece 42R is caulked while overlapping so as to sink into the inside of the left barrel piece 42L. As a result, the knurled eyes 44 formed on the inner surface of the front barrel 40 are pressed over the entire outer circumference of the braided wire 13 and the long holes 45 bite into the outer circumference of the braided wire 13 at two locations above and below. The ends of the braided wire 13 are crimped and fixed in a state where the retaining force is enhanced.
In addition, since the long hole 45 on the lower surface side opens to the outside, it can be confirmed by visually observing through the long hole 45 whether or not the braided wire 13 is properly caulked.

後バレル50については、左右のバレル片52L,52Rがオーバラップ形式で絶縁外皮14の外周を左右両側から抱き込むようにしてかしめられる。後バレル50では、正面視の左バレル片52Lの突出端が溝53の部分から先に内方に屈曲するため、上記の前バレル40とは逆に、図5に示すように、左バレル片52Lが右バレル片52Rの内側に潜り込むようにしてオーバラップしつつかしめられる。それに伴い、後バレル50の内面に形成されたローレット目54が絶縁外皮14の外周のほぼ全周に亘って押し付けられる。   Regarding the rear barrel 50, the left and right barrel pieces 52L and 52R are caulked in an overlapping manner so as to embrace the outer periphery of the insulating skin 14 from both the left and right sides. In the rear barrel 50, the protruding end of the left barrel piece 52L when viewed from the front is bent inward first from the groove 53 portion. Therefore, as shown in FIG. 52L is caulked while being overlapped so as to sink inside the right barrel piece 52R. Accordingly, the knurled eyes 54 formed on the inner surface of the rear barrel 50 are pressed over substantially the entire outer periphery of the insulating outer skin 14.

それに加え、底壁51の左右両側縁寄りの位置に設けられた一対の突起60が、絶縁外皮14の外周部のうち、下面から側面側に回り込んだ2箇所において食い込み、両突起60の前縁のせん断面61が、後方への引っ張りに対する引っ掛かりとなり、また、かしめ動作に伴い両突起60の間隔が狭まってそれぞれの対向した側縁のせん断面62の間に絶縁外皮14の外周部が挟まれる。これにより、絶縁外皮14の端末は、抜け止め力が大幅に強化された状態で圧着固定される。   In addition, the pair of protrusions 60 provided at positions near the left and right side edges of the bottom wall 51 bite in two places around the outer peripheral portion of the insulating outer skin 14 from the lower surface to the side surface, and in front of both protrusions 60. The edge shear surface 61 becomes a catch against the rearward pulling, and the distance between the two protrusions 60 is narrowed by the caulking operation, and the outer peripheral portion of the insulating outer skin 14 is sandwiched between the shear surfaces 62 of the opposite side edges. It is. Thereby, the terminal of the insulating outer skin 14 is crimped and fixed in a state where the retaining force is greatly enhanced.

ここで、後バレル50がかしめられる際には、図5の矢線Aに示すように、シールド電線10の軸線を挟んだ上下両側から圧縮力を受けるのであるが、両突起60の形成位置は、芯線11の真下からは側方にずれているから、突起60が芯線11の真下にある場合と比べると、芯線11に作用する圧縮力すなわち応力が緩和され、同芯線11が破断することが回避される。   Here, when the rear barrel 50 is caulked, as shown by the arrow A in FIG. 5, it receives a compressive force from both the upper and lower sides across the axis of the shielded electric wire 10. Since the projection 60 is shifted laterally from directly below the core wire 11, the compressive force, that is, stress acting on the core wire 11 is relaxed and the concentric wire 11 may be broken as compared with the case where the protrusion 60 is directly below the core wire 11. Avoided.

上記のようにシールド電線10の端末にシールド端子20が接続されたら、同シールド端子20は、図4に示す姿勢から上下反転された姿勢を取って、図6に示すように、コネクタハウジング70のキャビティ71内に後方から挿入され、正規位置まで押し込まれたところで、キャビティ71内に設けられたランス72が、外側端子30に設けられた一次係止突部32に弾性的に一次係止し、またリテーナ73が本係止位置に押し込まれて二次係止突部33に二次係止することにより、シールド端子20は抜け方向に二重に係止された状態でキャビティ71内に収容される。   When the shield terminal 20 is connected to the end of the shielded electric wire 10 as described above, the shield terminal 20 takes a posture inverted upside down from the posture shown in FIG. 4, and as shown in FIG. When the lance 72 is inserted into the cavity 71 from the rear and pushed into the normal position, the lance 72 provided in the cavity 71 is elastically primary-locked to the primary locking protrusion 32 provided on the outer terminal 30, Further, when the retainer 73 is pushed into the main locking position and is secondarily locked to the secondary locking protrusion 33, the shield terminal 20 is accommodated in the cavity 71 in a state of being double locked in the pulling direction. The

このようなコネクタは、車両等の所定位置に配置されて、相手のコネクタと嵌合されるようにして用いられる。その際、シールド電線10に対して図6の矢線Bに示すように、後方への引っ張り力が作用する場合があるが、シールド電線10の絶縁外皮14の端末が、シールド端子20の外側端子30の後バレル50に対して、抜け止め力が大幅に強化された状態でかしめ圧着されているから、シールド電線10全体、あるいは絶縁外皮14単体がシールド端子20から引き抜かれることが有効に抑制される。   Such a connector is used in such a manner that it is disposed at a predetermined position of a vehicle or the like and fitted with a mating connector. At that time, as shown by an arrow B in FIG. 6, there is a case where a backward pulling force acts on the shielded electric wire 10, but the terminal of the insulating sheath 14 of the shielded electric wire 10 is connected to the outer terminal of the shield terminal 20. Since the crimping and crimping is performed with respect to the rear barrel 50 of the 30 in a state where the retaining force is greatly strengthened, it is possible to effectively suppress the entire shielded electric wire 10 or the insulating sheath 14 from being pulled out from the shield terminal 20. The

以上のように本実施形態では、シールド電線10の端末にシールド端子20を接続する部分、特に、シールド電線10の絶縁外皮14の端末を、シールド端子20の外側端子30に設けられた後バレル50をオーバラップ形式にかしめて圧着する部分の構造において、後バレル50の底壁51における幅方向の中心を挟んだ左右両側の位置に、シールド電線10の軸線方向と直交する方向に沿ったせん断面61を前縁に、同軸線方向に沿ったせん断面62を対向する側縁にそれぞれ有する一対の突起60を切り起こしにより形成した構造としている。   As described above, in the present embodiment, the portion of the shield wire 20 connected to the end of the shielded electric wire 10, particularly the end of the insulating sheath 14 of the shielded electric wire 10, the rear barrel 50 provided on the outer terminal 30 of the shield terminal 20. In the structure of the portion that is crimped by crimping in an overlapping manner, the shear plane along the direction perpendicular to the axial direction of the shielded electric wire 10 is located at the left and right sides of the bottom wall 51 of the rear barrel 50 across the center in the width direction. A pair of protrusions 60 each having a front edge 61 and a shear surface 62 along the coaxial line direction on opposite side edges are formed by cutting and raising.

そのため、後バレル50がかしめられた際には、一対の突起60が、絶縁外皮14の外周部のうち、下面から側面側に回り込んだ2箇所において食い込み、両突起60の前縁のせん断面61が後方への引っ張りに対する引っ掛かりとなり、また、両突起60の対向した側縁のせん断面62の間に絶縁外皮14の外周部が挟まれることによって、絶縁外皮14に対する抜け止め力が向上する。また、両突起60の形成位置は、芯線11の真下からは左右両側にずれているから、かしめ動作に伴う芯線11に作用する圧縮力すなわち応力が緩和され、同芯線11が破断するを未然に防止できる。結果、芯線11への応力緩和を図った上で絶縁外皮14ひいてはシールド電線10の抜け止め力を向上させることができる。
また、両突起60は、後バレル50の底壁51の幅方向の中心から左右に同寸法離間した位置において、対称形状をなして形成されているから、左右両側においてバランスの取れた抜け止め力を得ることができる。
Therefore, when the rear barrel 50 is caulked, the pair of protrusions 60 bite in two places around the outer peripheral portion of the insulating skin 14 from the lower surface to the side surface side, and the shear surfaces of the front edges of both protrusions 60 61 acts as a hook against the rearward pulling, and the outer peripheral portion of the insulating outer shell 14 is sandwiched between the shearing surfaces 62 on the opposite side edges of the two protrusions 60, whereby the retaining force against the insulating outer shell 14 is improved. In addition, since the positions where both the protrusions 60 are formed are shifted to the right and left sides from directly below the core wire 11, the compressive force, ie, stress acting on the core wire 11 due to the caulking operation is relaxed, and the concentric wire 11 is not broken. Can be prevented. As a result, the stress on the core wire 11 can be reduced, and the insulation force of the insulating sheath 14 and thus the shielded electric wire 10 can be improved.
Further, since both the protrusions 60 are formed in a symmetrical shape at the same distance from the center of the width direction of the bottom wall 51 of the rear barrel 50 in the left-right direction, a balanced retaining force is provided on both the left and right sides. Can be obtained.

なお、本実施形態では、外側端子30に設けられたオーバラップ状にかしめられる前バレル40と後バレル50とにおいて、外側に巻かれるバレル片を左右逆にしており、これにより、かしめ動作時にシールド端子20が軸線回りに回動することを阻止して、かしめ動作がよりスムーズにかつ正確に行われることを意図している。
本実施形態では、前バレル40と後バレル50とにおいて、それぞれ内側に巻かれるべきバレル片42R,52Lの突出端に先に内方へ屈曲することを促す溝43,53を設けたから、前後のバレル40,50において所望のオーバラップ形状が確実に実現でき、ひいてはかしめ動作時においてシールド端子20がローリングすることを確実に防止でき、スムーズかつ正確なかしめ圧着をすることができる。
In this embodiment, in the front barrel 40 and the rear barrel 50 that are caulked in an overlapped manner provided on the outer terminal 30, the barrel pieces wound outward are reversed left and right, so that the shield is shielded during the caulking operation. It is intended that the terminal 20 is prevented from rotating around the axis and the caulking operation is performed more smoothly and accurately.
In the present embodiment, the front barrel 40 and the rear barrel 50 are provided with the grooves 43 and 53 for urging them to be bent inward first at the projecting ends of the barrel pieces 42R and 52L to be wound inside, respectively. In the barrels 40 and 50, a desired overlapping shape can be reliably realized, and as a result, the shield terminal 20 can be reliably prevented from rolling during the caulking operation, and smooth and accurate crimping can be performed.

<実施形態2>
図7は、本発明の実施形態2を示す。後バレル50に設ける一対の突起65としては、平面方形状をなして、対向する側縁側を持ち上げるように切り起こし形成されたものであってもよい。この実施形態の突起65においても、前縁に設けられたところのシールド電線10の軸線方向と直交する方向に沿ったせん断面66が、絶縁外皮14の後方への移動の引っ掛かりとして機能し、また、対向した側縁に設けられたところの同軸線方向に沿ったせん断面67が、絶縁外皮14の外周部を挟むことに機能し、同様に、絶縁外皮14に対する抜け止め力を向上させることに有効となる。
<Embodiment 2>
FIG. 7 shows Embodiment 2 of the present invention. The pair of protrusions 65 provided on the rear barrel 50 may be formed by cutting and raising so as to lift the opposing side edge sides in a planar square shape. Also in the projection 65 of this embodiment, the shear surface 66 along the direction orthogonal to the axial direction of the shielded electric wire 10 provided at the front edge functions as a hook for the rearward movement of the insulating outer sheath 14, and In addition, the shear surface 67 along the direction of the coaxial line provided on the opposite side edge functions to sandwich the outer peripheral portion of the insulating outer skin 14, and similarly improves the retaining force against the insulating outer skin 14. It becomes effective.

上記実施形態1に示した平面三角形の突起60と、本実施形態2に示した平面方形の突起65の使い分けについての考察は以下のようである。両突起60,65について、それぞれの前縁61,66同士と対向した側縁62,67同士の長さは同じであることを前提条件としている。
三角形の突起60と方形の突起65とを切り起こした場合の曲げ剛性については、三角形の突起60の方が、3辺が切断された方形の突起65に比べて剛性が高く、そのため三角形の突起60の方が絶縁外皮14に対する食い込み量が大きいと考えられる。そのため、突起60,65の前縁のせん断面61,66が、絶縁外皮14の後方への移動の引っ掛かりとして機能する場合を考慮すると、三角形の突起60の方が有利であると考えられる。
The consideration about the proper use of the planar triangular projection 60 shown in the first embodiment and the planar square projection 65 shown in the second embodiment is as follows. It is a precondition that the lengths of the side edges 62 and 67 facing the front edges 61 and 66 of the protrusions 60 and 65 are the same.
Regarding the bending rigidity when the triangular protrusion 60 and the square protrusion 65 are cut and raised, the triangular protrusion 60 has higher rigidity than the rectangular protrusion 65 with three sides cut, and therefore the triangular protrusion 60 60 is considered to have a larger amount of biting into the insulating skin 14. Therefore, considering the case where the shearing surfaces 61 and 66 at the front edges of the protrusions 60 and 65 function as a hook for the rearward movement of the insulating outer skin 14, the triangular protrusion 60 is considered to be more advantageous.

一方、三角形の突起60と方形の突起65の絶縁外皮14に対する接触面積を見ると、後者の方が大きい。この種のバレル50を絶縁外皮14にかしめて圧着する場合には、かしめに伴う荷重が絶縁外皮14に作用すると同絶縁外皮14の肉が側方に逃げるように作用し、言い換えるとそれだけ力が逃げて保持力の不足を来すことになる。このような肉の逃げ量は、絶縁外皮14の厚さが大きい程多いと言える。
翻って、突起60,65の接触面積については、同接触面積が大きい程絶縁外皮14を押さえ込んで肉の逃げ量を抑制することができ、そのため、絶縁外皮14の肉の逃げ量を抑制して保持力を確保するには、方形の突起65の方が有利と言える。
On the other hand, when the contact area of the triangular protrusion 60 and the rectangular protrusion 65 with respect to the insulating skin 14 is viewed, the latter is larger. When this type of barrel 50 is caulked and crimped to the insulating outer shell 14, when a load accompanying caulking acts on the insulating outer shell 14, the flesh of the insulating outer shell 14 acts to escape to the side, in other words, the force is increased accordingly. Escape and run out of holding power. It can be said that the amount of such flesh escape increases as the thickness of the insulating outer shell 14 increases.
On the other hand, as for the contact area of the protrusions 60 and 65, the larger the contact area, the more the insulation outer skin 14 can be pressed down and the meat escape amount can be suppressed. In order to secure the holding force, it can be said that the square protrusion 65 is more advantageous.

上記のような考察から、絶縁外皮14の肉厚が厚くて肉の逃げ量が多いことに起因して保持力の不足が懸念されるものについては、肉の逃げ量を抑えることに有効な方形の突起65が適しており、一方、肉の逃げ量が比較的少ない絶縁外皮14の肉厚が薄いものについては、曲げ剛性が高くて食い込み量が大きくなることを生かして、絶縁外皮14の後方への移動の引っ掛かりにより有効となる三角形の突起60が適していると言える。   From the above considerations, a rectangle that is effective in suppressing the amount of escape of meat for those insufficiency of holding force due to the thick thickness of the insulating outer shell 14 and a large amount of escape of meat. On the other hand, when the thickness of the insulating skin 14 with a relatively small flesh escape amount is thin, the rear of the insulating skin 14 is utilized by taking advantage of the high bending rigidity and the amount of biting. It can be said that the triangular protrusion 60 that is effective by being caught by the movement is suitable.

<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形態も本発明の技術的範囲に含まれる。
(1)上記実施形態では、一対のバレル片をオーバラップかしめする際に内側に巻かれるバレル片を特定するべく、同バレル片の突出端の裏面に屈曲を促す溝を形成したものを例示したが、このような溝の形成は省略してもよい。
(2)後バレルの形態としては、1片のバレル片のみが設けられていてもよく、また、複数のバレル片が外側端子の軸線方向にずれて配されている形態のものであってもよい。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said embodiment, in order to identify the barrel piece wound inside when a pair of barrel pieces are caulked, a groove for promoting bending is formed on the back surface of the protruding end of the barrel piece. However, the formation of such grooves may be omitted.
(2) As a form of the rear barrel, only one barrel piece may be provided, or a plurality of barrel pieces may be arranged so as to be shifted in the axial direction of the outer terminal. Good.

(3)本発明は、雄側のシールド端子についても同様に適用することができる。
(4)本発明はまた、芯線の回りを単層の絶縁被覆で覆った通常の被覆電線の端末に接続される端子金具についても、同様に適用することが可能である。
(3) The present invention can be similarly applied to a male shield terminal.
(4) The present invention can also be similarly applied to a terminal fitting connected to a terminal of a normal covered electric wire in which the periphery of the core wire is covered with a single-layer insulating coating.

10…シールド電線(電線)
11…芯線
12…絶縁内皮
13…編組線(シールド層)
14…絶縁外皮(絶縁被覆)
20…シールド端子
30…外側端子
50…後バレル(バレル)
51…底壁
52L,52R…バレル片
53…溝
60…突起
61,62…せん断面
65…突起
66,67…せん断面
10 ... Shielded wire (wire)
11 ... Core wire 12 ... Insulating endothelium 13 ... Braided wire (shield layer)
14 ... Insulation skin (insulation coating)
20 ... Shield terminal 30 ... Outer terminal 50 ... Rear barrel (barrel)
51 ... Bottom wall 52L, 52R ... Barrel piece 53 ... Groove 60 ... Protrusion 61, 62 ... Shear surface 65 ... Protrusion 66, 67 ... Shear surface

Claims (4)

底壁の側縁からバレル片が立ち上がり形成されてなるバレルを備え、前記底壁に載置された電線の絶縁被覆に対し前記バレル片を巻き付けるようにかしめることで前記電線を圧着するようにした端子金具において、
前記バレルの前記底壁における幅方向の中心を挟んだ両側の位置には、前記電線の軸線方向と直交する方向に沿ったせん断面を前縁に、前記軸線方向に沿ったせん断面を対向する側縁にそれぞれ有する突起が切り起こしにより形成されていることを特徴とする端子金具。
A barrel is formed by rising a barrel piece from a side edge of the bottom wall, and the electric wire is crimped by caulking the barrel piece around the insulation coating of the electric wire placed on the bottom wall. In the terminal fitting
At the positions on both sides of the bottom wall of the barrel across the center in the width direction, the shear surface along the direction perpendicular to the axial direction of the electric wire is the front edge, and the shear surface along the axial direction is opposed to the barrel. A terminal fitting characterized in that protrusions respectively formed on side edges are formed by cutting and raising.
前記バレルは、前記底壁の左右両側縁から一対のバレル片が立ち上がり形成された形状であって、両バレル片がそれぞれの突出端を重ね合わせつつ前記絶縁被覆の外周を左右両側から抱き込むようにしてかしめられるようになっており、前記底壁の左右の側縁付近に前記突起が対称形状をなして形成されていることを特徴とする請求項1記載の端子金具。 The barrel has a shape in which a pair of barrel pieces rises from the left and right side edges of the bottom wall, and the barrel pieces embrace the outer periphery of the insulating coating from both the left and right sides while overlapping their protruding ends. 2. The terminal fitting according to claim 1, wherein the terminal fitting is caulked, and the protrusion is formed in a symmetrical shape near the left and right side edges of the bottom wall. いずれか一方のバレル片の突出端側の内面には、当該突出端を内方に屈曲しやすくするべく溝が形成されていることを特徴とする請求項2記載の端子金具。 The terminal fitting according to claim 2, wherein a groove is formed on an inner surface of one of the barrel pieces on the protruding end side so that the protruding end is easily bent inward. 前記電線が、芯線、絶縁内皮、シールド層及び絶縁外皮を内側から同心に配したシールド電線であって、前記バレルが前記絶縁外皮にかしめられることを特徴とする請求項1ないし請求項3のいずれか一項に記載の端子金具。 4. The electric wire according to claim 1, wherein the electric wire is a shielded electric wire having a core wire, an insulating inner skin, a shield layer, and an insulating outer shell arranged concentrically from the inside, and the barrel is caulked to the insulating outer shell. The terminal metal fitting according to item 1.
JP2010078111A 2010-03-30 2010-03-30 Terminal fitting Expired - Fee Related JP5505033B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013038836A1 (en) * 2011-09-14 2013-03-21 矢崎総業株式会社 Connecting structure of shielded electrical cable
WO2014010605A1 (en) * 2012-07-09 2014-01-16 古河電気工業株式会社 Pressure-fixing terminal, connecting structure and connector
CN105655743A (en) * 2014-12-02 2016-06-08 广濑电机株式会社 Coaxial cable connector having improved compression strength and impedance performance

Citations (3)

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JPS53163687U (en) * 1977-05-31 1978-12-21
JPH08111248A (en) * 1994-10-06 1996-04-30 Ryosei Denso Kk Connecting terminal
JP2002015783A (en) * 2000-06-29 2002-01-18 Sumitomo Wiring Syst Ltd Terminal metal fitting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53163687U (en) * 1977-05-31 1978-12-21
JPH08111248A (en) * 1994-10-06 1996-04-30 Ryosei Denso Kk Connecting terminal
JP2002015783A (en) * 2000-06-29 2002-01-18 Sumitomo Wiring Syst Ltd Terminal metal fitting

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013038836A1 (en) * 2011-09-14 2013-03-21 矢崎総業株式会社 Connecting structure of shielded electrical cable
US9077169B2 (en) 2011-09-14 2015-07-07 Yazaki Corporation Connection structure for shield wire
WO2014010605A1 (en) * 2012-07-09 2014-01-16 古河電気工業株式会社 Pressure-fixing terminal, connecting structure and connector
JP5535408B1 (en) * 2012-07-09 2014-07-02 古河電気工業株式会社 Crimp terminal, connection structure and connector
US9391376B2 (en) 2012-07-09 2016-07-12 Furukawa Electric Co., Ltd. Crimp terminal, connection structural body and connector
CN105655743A (en) * 2014-12-02 2016-06-08 广濑电机株式会社 Coaxial cable connector having improved compression strength and impedance performance
JP2016110710A (en) * 2014-12-02 2016-06-20 ヒロセ電機株式会社 Coaxial cable connector with improved crimp strength and impedance performance

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