JP2009238465A - Connector with shield wire - Google Patents

Connector with shield wire Download PDF

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JP2009238465A
JP2009238465A JP2008080785A JP2008080785A JP2009238465A JP 2009238465 A JP2009238465 A JP 2009238465A JP 2008080785 A JP2008080785 A JP 2008080785A JP 2008080785 A JP2008080785 A JP 2008080785A JP 2009238465 A JP2009238465 A JP 2009238465A
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core wire
insulating member
terminal
connector
shielded
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Shusuke Kanda
秀典 神田
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Yazaki Corp
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Yazaki Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector with a shield wire which is miniaturized and is easy to assemble and of which the component management does not become complicated. <P>SOLUTION: In the connector with the shield wire 1, a slit 23 is formed along an insertion direction of a core wire conduction terminal 10 at one end part on reverse side in insertion direction of the core wire conduction terminal 10 on the peripheral wall 21 of an insulation member 20. Thereby, when the core wire conduction terminal 10 is pressed in the housing hole 22 of the insulation member 20, the peripheral wall 21 of the insulation member 20 is expanded in vertical direction to the insertion direction of the core wire conduction terminal 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、シールド電線（同軸ケーブル）の端末部に電気的に接続されるシールド電線付きコネクタ（例えば、アンテナプラグコネクタ）に関するものである。   The present invention relates to a connector with a shielded wire (for example, an antenna plug connector) that is electrically connected to a terminal portion of a shielded wire (coaxial cable).

高周波信号を伝送する場合、高周波対応のシールド電線およびシールド電線付きコネクタが用いられる。そのようなコネクタ付きのシールド電線は、自動車等の車両で車載機器間の高周波信号の伝送にも用いられる。車載用のシールド電線付きコネクタには小型化の要求が強まっている。   When transmitting a high-frequency signal, a shielded wire and a connector with a shielded wire for high frequency are used. Such a shielded electric wire with a connector is also used for transmission of a high-frequency signal between in-vehicle devices in a vehicle such as an automobile. There is an increasing demand for miniaturization of connectors with shielded wires for in-vehicle use.

シールド電線は、一般的に、芯線の外側に絶縁体を介してシールド導体（編組等）を配し、シールド導体の外周をシースで被覆した構造をなしている。他方、シールド電線付きコネクタは、芯線に接続される芯線導通端子と、芯線導通端子を収容する筒状の絶縁部材と、絶縁部材を収容すると共に、シールド導体が接続される筒状のシールド端子と、を備えた構造をなしている。   In general, a shielded electric wire has a structure in which a shield conductor (braided or the like) is disposed on the outside of a core wire via an insulator, and the outer periphery of the shield conductor is covered with a sheath. On the other hand, the connector with a shielded wire includes a core wire conducting terminal connected to the core wire, a cylindrical insulating member that houses the core wire conducting terminal, a cylindrical shield terminal that contains the insulating member and is connected to the shield conductor , Has a structure with.

芯線導通端子を絶縁部材に装着する方式として、（１）絶縁部材の内部に形成したランスによって芯線導通端子を係止するタイプ、（２）絶縁部材の内部に芯線導通端子を圧入するタイプ、（３）絶縁部材を半割構造とし、半割体で芯線導通端子を挟みながら、絶縁部材をシールド端子に挿入することで、絶縁部材の開きを防止して、芯線導通端子を係止するタイプのものが知られている。   As a method of attaching the core wire conducting terminal to the insulating member, (1) a type in which the core wire conducting terminal is locked by a lance formed inside the insulating member, (2) a type in which the core wire conducting terminal is press-fitted inside the insulating member, ( 3) A type in which the insulating member has a half structure, and the insulating member is inserted into the shield terminal while the core wire conducting terminal is sandwiched between the halves to prevent the insulating member from being opened and the core wire conducting terminal is locked. Things are known.

まず、上記（１）のランスタイプのものであって、特許文献１に記載されたシールド電線付きコネクタの構造を説明する。図４は、従来のランスタイプのシールド電線付きコネクタの分解斜視図であり、図５は、シールド電線に装着された状態の、従来のランスタイプのシールド電線付きコネクタの縦断面図である。シールド電線Ｗは、芯線Ｗａと、芯線Ｗａの外側を包囲する絶縁体（誘電体）Ｗｂと、絶縁体Ｗｂの外側を覆うシールド導体（編組等）Ｗｃと、シールド導体Ｗｃの外周を被覆するシースＷｄとを備えた構造をなしている。一方、このシールド電線Ｗの端末に接続されるシールド電線付きコネクタ１００は、芯線Ｗａに接続される芯線導通端子１１０と、この芯線導通端子１１０を収容する筒状の絶縁部材１２０と、絶縁部材１２０を収容すると共に、シールド導体Ｗｃが接続される筒状のシールド端子１３０とを備えている。絶縁部材１２０の内部には可撓性を有したランス１２１が設けられており、このランス１２１が、絶縁部材１２０内に挿入された芯線導通端子１１０の段部１１１に係合することにより、芯線導通端子１１０が抜け止め固定されている。   First, the structure of the connector with a shielded wire described in Patent Document 1 which is the lance type of the above (1) will be described. FIG. 4 is an exploded perspective view of a conventional lance type shielded cable connector, and FIG. 5 is a longitudinal sectional view of the conventional lance type shielded cable connector attached to the shielded cable. The shielded electric wire W includes a core wire Wa, an insulator (dielectric) Wb that surrounds the outside of the core wire Wa, a shield conductor (such as a braid) Wc that covers the outside of the insulator Wb, and a sheath that covers the outer periphery of the shield conductor Wc. The structure is provided with Wd. On the other hand, a connector 100 with a shielded wire connected to the end of the shielded wire W includes a core wire conduction terminal 110 connected to the core wire Wa, a cylindrical insulation member 120 that accommodates the core wire conduction terminal 110, and an insulation member 120. And a cylindrical shield terminal 130 to which the shield conductor Wc is connected. A flexible lance 121 is provided inside the insulating member 120, and the lance 121 engages with a step portion 111 of the core wire conduction terminal 110 inserted into the insulating member 120, whereby a core wire is provided. The conduction terminal 110 is fixed to prevent it from coming off.

次に、上記（２）の圧入タイプのものについて説明する。図６は、従来の圧入タイプのシールド電線付きコネクタの要部の縦断面図である。この絶縁部材２２０の筒状の周壁２２１の内部には、芯線導通端子２１０によって挿通される収容孔２２２が設けられ、収容孔２２２の軸線方向中間部の内周には、収容孔２２２の入口の内径Ａよりも大きな内径を有する環状溝２２４が形成されている。また、芯線導通端子２１０は、該芯線導通端子２１０の挿通方向順側に接続相手側のシールド電線の芯線に接続される電気接続部２１１を有すると共に、該芯線導通端子２１０の挿通方向逆側にシールド電線の芯線に接続される芯線接続部２１３を有するものである。電気接続部２１１と芯線接続部２１３の間の部分の外周には、収容孔２２２の入口の内径Ａよりも径が大きく且つ絶縁部材２２０の環状溝２２４の内周に嵌まる外径Ｂを有した係止凸部２１２が設けられている。   Next, the press-fitting type (2) will be described. FIG. 6 is a longitudinal sectional view of a main part of a conventional press-fit type connector with shielded electric wire. Inside the cylindrical peripheral wall 221 of the insulating member 220, a receiving hole 222 inserted by the core wire conduction terminal 210 is provided, and an inlet of the receiving hole 222 is provided on the inner periphery of the intermediate portion in the axial direction of the receiving hole 222. An annular groove 224 having an inner diameter larger than the inner diameter A is formed. The core wire conduction terminal 210 has an electrical connection portion 211 connected to the core wire of the shielded wire on the connection partner side on the forward side of the insertion direction of the core wire conduction terminal 210, and on the opposite side of the insertion direction of the core wire conduction terminal 210. It has the core wire connection part 213 connected to the core wire of a shield electric wire. The outer periphery of the portion between the electrical connection portion 211 and the core wire connection portion 213 has an outer diameter B that is larger than the inner diameter A of the inlet of the accommodation hole 222 and fits into the inner periphery of the annular groove 224 of the insulating member 220. The locking projection 212 is provided.

このタイプの場合は、芯線導通端子２１０の係止凸部２１２を、絶縁部材２２０の収容孔２２２の入口の小径部分（内径Ａの部分）を通して、環状溝２２４まで圧入することにより、芯線導通端子２１０を係止するようにしている。   In the case of this type, the core wire conductive terminal 210 is press-fitted into the annular groove 224 through the small diameter portion (portion of the inner diameter A) of the inlet of the accommodation hole 222 of the insulating member 220 by inserting the locking convex portion 212 of the core wire conductive terminal 210. 210 is locked.

次に、上記（３）の半割タイプのものについて説明する。図７は、従来の半割タイプのシールド電線付きコネクタの要部の縦断面図である。この絶縁部材２５０は、その直径を含む面で周壁が半割りされた２つの半割体２５０ａ、２５０ｂによって構成される。各半割体２５０ａ、２５０ｂは、該半割体２５０ａ、２５０ｂを一体に組み立てた場合の筒状の周壁２５１の内部には、芯線導通端子２１０を収容する収容孔２５２が設けられ、収容孔２５２の軸線方向中間部の内周に、収容孔２５２の入口の内径よりも大きな内径を有する環状溝２５４が形成されている。この２つの半割体２５０ａ、２５０ｂの間に、前記圧入タイプの場合と同様の芯線導通端子２１０を挟み、半割体２５１を閉じたまま、それをシールド端子の中に挿入することで、半割体２５１が開かないように規制し、それにより、芯線導通端子２１０を抜けないように固定するようにしている。
特開２００６−２４４９９号公報 Next, the half type (3) will be described. FIG. 7 is a vertical cross-sectional view of a main part of a conventional half-type connector with shielded electric wire. The insulating member 250 is composed of two halves 250a and 250b in which the peripheral wall is divided in half by the surface including the diameter. Each half-split body 250a, 250b is provided with a housing hole 252 for housing the core wire conduction terminal 210 inside the cylindrical peripheral wall 251 when the half-split bodies 250a, 250b are assembled together. An annular groove 254 having an inner diameter larger than the inner diameter of the inlet of the accommodation hole 252 is formed on the inner periphery of the intermediate portion in the axial direction. Between the two halves 250a and 250b, a core wire conduction terminal 210 similar to that of the press-fitting type is sandwiched, and the half 251 is closed and inserted into the shield terminal. The split body 251 is restricted so as not to open, and thereby the core wire conduction terminal 210 is fixed so as not to come off.
JP 2006-24499 A

従来のシールド電線付きコネクタには、上記のようなタイプのものがあるが、それぞれに次のような課題がある。   Conventional connectors with shielded wires include the types described above, but each has the following problems.

まず、ランスタイプのシールド電線付きコネクタは、絶縁部材１２０の内部にランス１２１を設ける必要があるため、絶縁部材１２０が大径化し、シールド電線付きコネクタの小型化の障害となる。   First, since the lance type connector with shielded wire needs to be provided with the lance 121 inside the insulating member 120, the insulating member 120 has a large diameter, which is an obstacle to miniaturization of the connector with shielded wire.

また、圧入タイプのシールド電線付きコネクタは、絶縁部材２２０の収容孔２２２の入口の内径Ａと芯線導通端子２１０の係止凸部２１２の外径Ｂの差が大きいほど、強固な係止力が得られるようになるが、径差を大きくするほど、芯線導通端子２１０を圧入するのために要する挿入力が大きくなり、組み付けが難しくなる。   In addition, the press-fit type connector with shielded electric wire has a stronger locking force as the difference between the inner diameter A of the inlet of the accommodation hole 222 of the insulating member 220 and the outer diameter B of the locking convex portion 212 of the core wire conduction terminal 210 increases. As the diameter difference increases, the insertion force required for press-fitting the core wire conduction terminal 210 increases, and the assembly becomes difficult.

また、半割タイプのシールド電線付きコネクタは、絶縁部材２５０が二部品化するため、組み付けが面倒になる上、部品点数が増えることで管理が煩雑になる。   In addition, since the insulating member 250 is divided into two parts, the half-split type connector with shielded electric wires is troublesome to assemble, and the number of parts increases, and management becomes complicated.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、小型化が可能で、組み付けが容易であり、しかも部品管理が煩雑になることのないシールド電線付きコネクタを提供することにある。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a connector with a shielded electric wire that can be reduced in size, can be easily assembled, and does not complicate component management. It is in.

前述した目的を達成するために、本発明に係るシールド電線付きコネクタは、下記（１）〜（６）を特徴としている。
（１） 内部導体である芯線と、前記芯線の外周面を包囲しながら該芯線の長手方向に延長される内部被覆と、前記内部被覆の外周面を包囲しながら前記長手方向に延長されるシールド部材と、前記シールド部材の外周面を包囲しながら前記長手方向に延長される外部被覆と、を備え、前記長手方向の一端部において、前記芯線、前記内部被覆、及び前記シールド部材それぞれの一端部が露出されたシールド電線と、
前記シールド電線の一端部に取り付けられた端子本体と、
を備えたシールド電線付きコネクタであって、
前記端子本体は、
前記シールド電線の一端部で前記芯線に電気的に接続された、相手方端子に前記芯線を電気的に接続するための導電性金属製の芯線導通端子と、
前記芯線に電気的に接続された状態の前記芯線導通端子によって貫通される収容孔を有する絶縁部材と、
前記芯線導通端子を包囲しながら前記絶縁部材を介して前記芯線導通端子を支持する円筒部が一端部に設けられ、且つ前記シールド電線の一端部で前記シールド部材に電気的に接続されるシールド部材接続部が他端部に設けられた、導電性金属製のシールド端子と、
を有し、
前記絶縁部材の周壁における前記芯線導通端子の挿通方向逆側の一端部に、前記芯線導通端子の挿通方向に沿ったスリットが形成されることによって、前記芯線導通端子を該絶縁部材の前記収容孔内に圧入するときに、該スリットによって該絶縁部材の周壁が前記芯線導通端子の挿通方向に対して垂直な方向に拡がる、
こと。
（２） 上記（１）の構成のシールド電線付きコネクタにおいて、
前記絶縁部材の前記収容孔の内周には、前記芯線導通端子の挿通方向逆側の該絶縁部材の一端部における該収容孔の内径よりも大きな内径を有する環状溝が形成され、
前記芯線導通端子の外周には、前記絶縁部材への挿通方向順側の該芯線導通端子の外径よりも大きく、且つ前記芯線導通端子を該絶縁部材の前記収容孔内に圧入するときに前記環状溝に嵌合される外径を有する係止凸部が設けられる、
こと。
（３） 上記（１）または（２）の構成のシールド電線付きコネクタにおいて、
前記スリットは、前記絶縁部材の周壁における、前記芯線導通端子の挿通方向逆側の一端部から、該一端部と前記芯線導通端子の挿通方向順側の他端部との間の任意の箇所までの範囲に形成されていること。
（４） 上記（３）の構成のシールド電線付きコネクタにおいて、
前記スリットが、前記前記絶縁部材の周壁の周方向に離間して複数形成されていること。
（５） 上記（３）の構成のシールド電線付きコネクタにおいて、
前記スリットの前記任意の箇所には、前記芯線導通端子の挿通方向に対して垂直な方向の幅が該スリットよりも大きなくり抜き孔が形成されていること。
（６） 上記（１）または（２）の構成のシールド電線付きコネクタにおいて、
一つの前記スリットが、前記絶縁部材の周壁における、前記芯線導通端子の挿通方向逆側の一端部から前記芯線導通端子の挿通方向順側の他端部にかけて形成されており、該スリットにより前記絶縁部材の前記周壁は周方向に切り離されていること。 In order to achieve the above-described object, the connector with shielded wire according to the present invention is characterized by the following (1) to (6).
(1) A core wire that is an internal conductor, an inner sheath that extends in the longitudinal direction of the core wire while surrounding the outer peripheral surface of the core wire, and a shield that extends in the longitudinal direction while surrounding the outer peripheral surface of the inner sheath A member and an outer coating extending in the longitudinal direction while surrounding an outer peripheral surface of the shield member, and at one end in the longitudinal direction, one end of each of the core wire, the inner coating, and the shield member The exposed shielded wire,
A terminal body attached to one end of the shielded wire;
A shielded wire connector with
The terminal body is
A conductive metal core wire conducting terminal for electrically connecting the core wire to a counterpart terminal, electrically connected to the core wire at one end of the shielded wire;
An insulating member having an accommodation hole that is penetrated by the core wire conduction terminal in a state of being electrically connected to the core wire;
A shield member which is provided at one end with a cylindrical portion supporting the core wire conduction terminal through the insulating member while surrounding the core wire conduction terminal, and is electrically connected to the shield member at one end of the shielded electric wire A shield terminal made of conductive metal provided with a connecting portion at the other end; and
Have
A slit along the insertion direction of the core wire conduction terminal is formed at one end of the peripheral wall of the insulation member on the opposite side to the insertion direction of the core wire conduction terminal, so that the core wire conduction terminal is inserted into the accommodation hole of the insulation member. When press-fitting into, the peripheral wall of the insulating member is expanded by the slit in a direction perpendicular to the insertion direction of the core wire conduction terminal.
thing.
(2) In the connector with a shielded wire configured as described in (1) above,
An annular groove having an inner diameter larger than the inner diameter of the accommodation hole at one end of the insulation member on the opposite side of the insertion direction of the core wire conduction terminal is formed on the inner periphery of the accommodation hole of the insulation member,
The outer circumference of the core wire conducting terminal is larger than the outer diameter of the core wire conducting terminal on the forward side in the insertion direction to the insulating member, and when the core wire conducting terminal is press-fitted into the accommodation hole of the insulating member, A locking projection having an outer diameter fitted in the annular groove is provided,
thing.
(3) In the connector with a shielded electric wire having the above configuration (1) or (2),
The slit extends from one end of the peripheral wall of the insulating member on the side opposite to the insertion direction of the core wire conduction terminal to an arbitrary position between the one end and the other end on the forward direction of the core wire conduction terminal. It is formed in the range of.
(4) In the connector with a shielded wire configured as described in (3) above,
A plurality of the slits are formed apart from each other in the circumferential direction of the peripheral wall of the insulating member.
(5) In the connector with a shielded wire having the configuration of (3) above,
A hollow having a width in a direction perpendicular to the insertion direction of the core wire conducting terminal larger than that of the slit is formed at the arbitrary portion of the slit.
(6) In the connector with a shielded electric wire having the configuration (1) or (2) above,
One slit is formed from one end of the peripheral wall of the insulating member on the opposite side of the insertion direction of the core wire conduction terminal to the other end on the forward side of the insertion direction of the core wire conduction terminal. The peripheral wall of the member is separated in the circumferential direction.

上記（１）の構成のシールド電線付きコネクタによれば、芯線導通端子を絶縁部材に挿入する際に、絶縁部材の周壁が絶縁部材の軸線方向とは垂直な方向へ拡がることで、絶縁部材の収容孔を容易に広げることができるので、小さい挿入力で、絶縁部材内に芯線導通端子を挿入することができる。このように、スリットが開くことにより、絶縁部材内への芯線導通端子の挿入力を小さく抑えることができるので、絶縁部材と芯線導通端子を、強固な係止力が得られるように寸法設定しても、組み付けしやすくなる。また、絶縁部材に、芯線導通端子を係止するランスを設ける必要がないので、絶縁部材の小径化が可能であり、それにより、シールド電線付きコネクタの小径化に貢献することができる。また、絶縁部材は半割する必要がなく、１個の部品として構成することができるので、組み付けや部品管理が容易にできる。また、絶縁部材に芯線導通端子を挿入した後に、その絶縁部材をシールド端子の内部に挿入することになるので、シールド端子によって、絶縁部材の拡径を押さえることができ、芯線導通端子の確実な抜け防止を図ることができる。
上記（２）の構成のシールド電線付きコネクタによれば、絶縁部材の収容孔の内周に形成した環状溝に、芯線導通端子の外周に形成した係止凸部が嵌まることにより、確実に芯線導通端子を絶縁部材に係止することができる。
上記（３）の構成のシールド電線付きコネクタによれば、各スリットが、絶縁部材の軸線方向の一端から他端の手前までの範囲に形成されているので、絶縁部材の一体性を保ちながら、芯線導通端子の圧入の際に絶縁部材を拡径しやすくすることができる。
上記（４）の構成のシールド電線付きコネクタによれば、スリットが絶縁部材の周壁に複数設けられているので、芯線導通端子の圧入の際に絶縁部材をより拡径しやすくすることができる。
上記（５）の構成のシールド電線付きコネクタによれば、スリットによって分け隔てられた絶縁部材が結合している箇所に、スリットよりも幅の大きな孔が設けられているので、芯線導通端子の圧入の際に絶縁部材をより拡径しやすくすることができる。
上記（６）の構成のシールド電線付きコネクタによれば、１本のスリットを絶縁部材の軸線方向の一端から他端まで形成してあるので、芯線導通端子の圧入の際に絶縁部材をより拡径しやすくすることができる。 According to the connector with a shielded wire having the configuration of (1) above, when the core wire conducting terminal is inserted into the insulating member, the peripheral wall of the insulating member expands in a direction perpendicular to the axial direction of the insulating member. Since the accommodation hole can be easily widened, the core wire conduction terminal can be inserted into the insulating member with a small insertion force. As described above, since the insertion force of the core wire conducting terminal into the insulating member can be suppressed by opening the slit, the insulating member and the core wire conducting terminal are dimensioned so as to obtain a strong locking force. Even easier to assemble. Moreover, since it is not necessary to provide the insulating member with a lance for locking the core wire conducting terminal, it is possible to reduce the diameter of the insulating member, thereby contributing to the reduction of the diameter of the connector with the shielded wire. In addition, the insulating member does not need to be divided in half, and can be configured as one component, so that assembly and component management can be facilitated. Moreover, since the insulation member is inserted into the inside of the shield terminal after the core wire conduction terminal is inserted into the insulation member, the diameter of the insulation member can be suppressed by the shield terminal, and the core wire conduction terminal can be reliably connected. It is possible to prevent disconnection.
According to the connector with a shielded wire having the configuration of (2) above, the engagement protrusion formed on the outer periphery of the core wire conduction terminal fits securely into the annular groove formed on the inner periphery of the accommodation hole of the insulating member. The core wire conduction terminal can be locked to the insulating member.
According to the connector with a shielded wire having the configuration of (3) above, each slit is formed in a range from one end in the axial direction of the insulating member to the front of the other end, while maintaining the integrity of the insulating member, The diameter of the insulating member can be easily increased when the core wire conducting terminal is press-fitted.
According to the connector with a shielded electric wire having the configuration (4), since a plurality of slits are provided on the peripheral wall of the insulating member, the diameter of the insulating member can be more easily increased when the core wire conducting terminal is press-fitted.
According to the connector with a shielded wire having the configuration of (5) above, since the hole having a width wider than the slit is provided at the place where the insulating members separated by the slit are joined, the core wire conduction terminal is press-fitted. In this case, the diameter of the insulating member can be easily increased.
According to the connector with a shielded wire having the configuration of (6) above, since one slit is formed from one end to the other end in the axial direction of the insulating member, the insulating member is further expanded when the core wire conducting terminal is press-fitted. The diameter can be made easy.

本発明によれば、スリットの作用により、小さな挿入力で芯線導通端子を絶縁部材に圧入することができるようになり、絶縁部材と芯線導通端子を、強固な係止力が得られるように寸法設定しても、組み付けしやすくなる。また、絶縁部材に、芯線導通端子を係止するランスを設ける必要がないので、絶縁部材の小径化が可能であり、それにより、シールド電線付きコネクタの小径化に貢献することができる。また、絶縁部材は半割する必要がなく、１個の部品として構成することができるので、組み付けや部品管理が容易にできる。   According to the present invention, due to the action of the slit, the core wire conducting terminal can be press-fitted into the insulating member with a small insertion force, and the insulating member and the core wire conducting terminal are dimensioned so as to obtain a strong locking force. Even if set, it becomes easy to assemble. Moreover, since it is not necessary to provide the insulating member with a lance for locking the core wire conducting terminal, it is possible to reduce the diameter of the insulating member, thereby contributing to the reduction of the diameter of the connector with the shielded wire. In addition, the insulating member does not need to be divided in half, and can be configured as one component, so that assembly and component management can be facilitated.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための最良の形態を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。   The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

以下、本発明に係る好適な実施形態を図面に基づいて詳細に説明する。図１は、本発明に係る実施形態のシールド電線付きコネクタの分解斜視図であり、図２は、シールド電線に装着された状態の、本発明に係る実施形態のシールド電線付きコネクタの要部の縦断面図である。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of a connector with a shielded electric wire according to an embodiment of the present invention, and FIG. 2 is a diagram of a main part of the connector with a shielded electric wire according to an embodiment of the present invention in a state of being attached to the shielded electric wire. It is a longitudinal cross-sectional view.

シールド電線Ｗは、内部導体である芯線Ｗａと、芯線Ｗａの外周面を包囲しながら該芯線Ｗａの長手方向に延長される絶縁体（誘電体。内部被覆と称することもある。）Ｗｂと、絶縁体Ｗｂの外周面を包囲しながら長手方向に延長されるシールド導体（編組等。シールド部材と称することもある。）Ｗｃと、シールド導体Ｗｃの外周面を包囲しながら長手方向に延長されるシースＷｄ（外部被覆と称することもある。）と、を備えている。シールド電線Ｗは、長手方向の一端部において、芯線Ｗａ、絶縁体Ｗｂ、及びシールド導体Ｗｃの一端部が露出されている。   The shielded electric wire W includes a core wire Wa that is an internal conductor, and an insulator (dielectric material, sometimes referred to as an internal coating) Wb that extends in the longitudinal direction of the core wire Wa while surrounding the outer peripheral surface of the core wire Wa. A shield conductor (such as a braid or the like; sometimes referred to as a shield member) Wc that extends in the longitudinal direction while surrounding the outer peripheral surface of the insulator Wb and a longitudinal direction that surrounds the outer peripheral surface of the shield conductor Wc. A sheath Wd (sometimes referred to as an outer coating). The shield wire W has one end portion of the core wire Wa, the insulator Wb, and the shield conductor Wc exposed at one end portion in the longitudinal direction.

本実施形態のシールド電線付きコネクタは、シールド電線Ｗ用のコネクタであって、芯線Ｗａに接続される芯線導通端子１０と、芯線Ｗａに電気的に接続された芯線導通端子１０を収容孔２２に収容する絶縁部材２０と、絶縁部材２０を収容すると共に、シールド導体Ｗｃが接続される筒状のシールド端子３０とを備えたものである。   The connector with a shielded wire according to the present embodiment is a connector for a shielded wire W, and includes a core wire conduction terminal 10 connected to the core wire Wa and a core wire conduction terminal 10 electrically connected to the core wire Wa in the accommodation hole 22. The insulation member 20 to be accommodated and the cylindrical shield terminal 30 to which the insulation conductor 20 is accommodated and to which the shield conductor Wc is connected are provided.

芯線導通端子１０は、絶縁部材２０への挿通方向順側に、接続相手側のシールド電線の芯線に電気的に接続される電気接続部１１を有し、他方、絶縁部材２０への挿通方向逆側に、シールド電線Ｗの芯線Ｗａに電気的に接続される芯線接続部１３を有する。さらに、芯線動通端子１０は、電気接続部１１と芯線接続部１３の間の部分の外周に、前記絶縁部材への挿通方向順側の一端部１１ａの外径よりも大きい係止凸部１２が設けられている。   The core wire conduction terminal 10 has an electrical connection portion 11 that is electrically connected to the core wire of the shielded electric wire on the connection partner side on the forward side in the insertion direction to the insulating member 20, while the insertion direction reverse to the insulating member 20 is reversed. It has the core wire connection part 13 electrically connected to the core wire Wa of the shield electric wire W in the side. Further, the core wire communication terminal 10 is provided on the outer periphery of the portion between the electrical connection portion 11 and the core wire connection portion 13 with a locking projection 12 larger than the outer diameter of the one end portion 11a on the forward side in the insertion direction to the insulating member. Is provided.

絶縁部材２０の円筒状の周壁２１には、芯線導通端子１０を絶縁部材２０の収容孔２２内に圧入するときに、芯線導通端子１０の挿通方向とは垂直な方向へ絶縁部材２０が拡がることを助けるスリット２３が、芯線導通端子１０の挿通方向逆側の一端部に、絶縁部材２０の軸線方向に沿って形成されている。スリット２３は、周壁２１の周方向に１８０°離間して２本設けられている（つまり、２つのスリット２３が、収容孔２２を挟んで対向するように設けられている。）。各スリット２３は、芯線導通端子１０の挿通方向逆側の一端部２３ａから、芯線導通端子１０の挿通方向逆側の一端部２３ａと挿通方向順側の他端部２３ｃとの間の任意の箇所に位置する中央部２３ｂまでの範囲に形成されている。   When the core wire conducting terminal 10 is press-fitted into the accommodating hole 22 of the insulating member 20 in the cylindrical peripheral wall 21 of the insulating member 20, the insulating member 20 expands in a direction perpendicular to the insertion direction of the core wire conducting terminal 10. A slit 23 is formed at one end on the opposite side of the insertion direction of the core wire conducting terminal 10 along the axial direction of the insulating member 20. Two slits 23 are provided 180 degrees apart from each other in the circumferential direction of the peripheral wall 21 (that is, the two slits 23 are provided so as to face each other with the accommodation hole 22 in between). Each slit 23 is an arbitrary portion between one end portion 23a on the opposite side of the insertion direction of the core wire conduction terminal 10 and one end portion 23a on the opposite side of the insertion direction of the core wire conduction terminal 10 and the other end portion 23c on the forward side of the insertion direction. It is formed in the range to the center part 23b located in the.

絶縁部材２０の収容孔２２の内周における軸線方向中間部には、収容孔２２の入口の内径Ａよりも大きな内径を有する環状溝２４が形成されている。芯線導通端子１０の係止凸部１２は、収容孔２２の入口の内径Ａよりも径が大きく、且つ芯線導通端子１０を絶縁部材２０の収容孔２２内に圧入するときに絶縁部材２０の環状溝２４の内周に嵌合される形状である。   An annular groove 24 having an inner diameter larger than the inner diameter A of the inlet of the accommodation hole 22 is formed at the intermediate portion in the axial direction on the inner periphery of the accommodation hole 22 of the insulating member 20. The locking convex portion 12 of the core wire conduction terminal 10 has a diameter larger than the inner diameter A of the inlet of the accommodation hole 22, and when the core wire conduction terminal 10 is press-fitted into the accommodation hole 22 of the insulation member 20, The shape is fitted to the inner periphery of the groove 24.

シールド端子３０は、導電性金属製によって形成される。シールド端子３０は、一端部に、絶縁部材を嵌合し、芯線導通端子１０を包囲しながら絶縁部材２０を介して芯線導通端子１０を支持する円筒部３１が設けられ、他端部に、シールド電線Ｗのシールド部材Ｗｃに電気的に接続されるシールド部材接続部３２が他端部に設けられる。図１に示すシールド端子３０のシールド部材接続部３２は、シールド電線Ｗの一端部でシールド部材Ｗｃを加締めることによって、シールド部材Ｗｃに電気的に接続される。   The shield terminal 30 is made of a conductive metal. The shield terminal 30 is provided with a cylindrical portion 31 that fits an insulating member at one end and supports the core wire conducting terminal 10 via the insulating member 20 while surrounding the core wire conducting terminal 10, and a shield at the other end. A shield member connection portion 32 that is electrically connected to the shield member Wc of the electric wire W is provided at the other end. The shield member connection portion 32 of the shield terminal 30 shown in FIG. 1 is electrically connected to the shield member Wc by crimping the shield member Wc at one end of the shielded electric wire W.

絶縁部材２０が、このように構成されていることにより、芯線導通端子１０を絶縁部材２０の収容孔２２内に挿入する際に、絶縁部材２０の周壁２１が絶縁部材２０の軸線方向とは垂直な方向へ拡がることで、絶縁部材２０の収容孔２２の内径を容易に拡げることができる。従って、小さい挿入力で、絶縁部材２０内に芯線導通端子１０を挿入することができ、絶縁部材２０と芯線導通端子１０を強固な係止力が得られるように寸法設定しても、組み付けしやすくなる。   Since the insulating member 20 is configured as described above, the peripheral wall 21 of the insulating member 20 is perpendicular to the axial direction of the insulating member 20 when the core wire conduction terminal 10 is inserted into the accommodation hole 22 of the insulating member 20. By expanding in such a direction, the inner diameter of the accommodation hole 22 of the insulating member 20 can be easily expanded. Accordingly, the core wire conducting terminal 10 can be inserted into the insulating member 20 with a small insertion force, and the insulating member 20 and the core wire conducting terminal 10 are assembled even if the dimensions are set so as to obtain a strong locking force. It becomes easy.

また、絶縁部材２０に、芯線導通端子１０を係止するランスを設ける必要がないので、絶縁部材２０の小径化が可能であり、それにより、シールド電線付きコネクタの小径化に貢献することができる。また、絶縁部材２０は半割する必要がなく、１個の部品として構成することができるので、組み付けや部品管理が容易にできる。さらに、絶縁部材２０に芯線導通端子１０を挿入した後に、その絶縁部材２０をシールド端子の内部に挿入することになるので、シールド端子によって、絶縁部材２０の拡径を押さえることができ、芯線導通端子１０の確実な抜け防止を図ることができる。   Moreover, since it is not necessary to provide the lance which latches the core wire conduction | electrical_connection terminal 10 in the insulating member 20, the diameter of the insulating member 20 is possible, and it can contribute to the diameter reduction of a connector with a shield wire by it. . Further, the insulating member 20 does not need to be divided in half, and can be configured as a single component, so that assembly and component management can be facilitated. Further, since the insulating member 20 is inserted into the shield terminal after the core wire conducting terminal 10 is inserted into the insulating member 20, the shield terminal can suppress the diameter expansion of the insulating member 20, and the core wire conducting. The terminal 10 can be reliably prevented from coming off.

また、本実施形態では、絶縁部材２０の収容孔２２の内周に形成した環状溝２４に、芯線導通端子１０の外周に形成した係止凸部１２が嵌まることにより、確実に芯線導通端子１０を絶縁部材２０に係止することができる。また、スリット２３が絶縁部材２０の周壁２１に２本設けられ、各スリット２３が、絶縁部材２０の軸線方向の一端から他端の手前までの範囲に形成されているので、絶縁部材２０の一体性を保ちながら、芯線導通端子１０の圧入の際に絶縁部材２０を拡径しやすくすることができる。   Moreover, in this embodiment, the engagement convex part 12 formed in the outer periphery of the core wire conduction | electrical_connection terminal 10 fits in the annular groove 24 formed in the inner periphery of the accommodation hole 22 of the insulating member 20, and a core wire conduction | electrical_connection terminal is ensured. 10 can be locked to the insulating member 20. In addition, two slits 23 are provided on the peripheral wall 21 of the insulating member 20, and each slit 23 is formed in a range from one end in the axial direction of the insulating member 20 to the front of the other end. The insulating member 20 can be easily expanded in diameter when the core wire conducting terminal 10 is press-fitted while maintaining the properties.

続いて、本発明に係る実施形態のシールド電線付きコネクタの変形例について説明する。図３は、本発明に係る実施形態のシールド電線付きコネクタにおける絶縁部材の斜視図であり、図３（ａ）〜（ｄ）はそれぞれ、スリットの形状の異なる絶縁部材の斜視図である。   Then, the modification of the connector with a shield wire of embodiment which concerns on this invention is demonstrated. FIG. 3 is a perspective view of an insulating member in the connector with shielded wire according to the embodiment of the present invention, and FIGS. 3A to 3D are perspective views of insulating members having different slit shapes.

図３（ａ）に示す絶縁部材２０Ａには、図１及び図２を参照して説明したように、スリット２３が、周壁２１の周方向に１８０°離間して２本設けられている。この構成により、芯線導通端子１０を絶縁部材２０Ａに挿入する際に、絶縁部材２０Ａの周壁２１が絶縁部材２０Ａの軸線方向とは垂直な方向へ拡がることで、絶縁部材２０Ａの収容孔２２を容易に拡径させることができる。   As described with reference to FIGS. 1 and 2, the insulating member 20 </ b> A shown in FIG. 3A is provided with two slits 23 spaced apart by 180 ° in the circumferential direction of the peripheral wall 21. With this configuration, when the core wire conducting terminal 10 is inserted into the insulating member 20A, the peripheral wall 21 of the insulating member 20A expands in a direction perpendicular to the axial direction of the insulating member 20A, so that the accommodation hole 22 of the insulating member 20A can be easily formed. The diameter can be increased.

また、図３（ｂ）に示す絶縁部材２０Ｂには、中央部２３ｂに円形のくり抜き孔２６が設けられている。このくり抜き孔２６により、対向するスリットによって分けられる絶縁部材２０Ｂの両側をより開きやすくすることができる。   Further, in the insulating member 20B shown in FIG. 3B, a circular cutout hole 26 is provided in the central portion 23b. This cut-out hole 26 makes it easier to open both sides of the insulating member 20B separated by the opposing slits.

また、図３（ｃ）の絶縁部材２０Ｃには、一本のスリット２３が、絶縁部材２０Ｃの芯線導通端子１０の挿通方向逆側の一端部２３ａから挿通方向順側の他端２３ｃにかけて形成されている。このスリット２３によって、絶縁部材２０の収容孔２２の周壁２１を拡げやすくすることができる。この例は、小さい絶縁部材に適用する場合に好適である。   3C, a single slit 23 is formed from one end 23a on the opposite side of the insertion direction of the core wire conducting terminal 10 of the insulating member 20C to the other end 23c on the forward side in the insertion direction. ing. With the slit 23, the peripheral wall 21 of the accommodation hole 22 of the insulating member 20 can be easily expanded. This example is suitable when applied to a small insulating member.

また、図３（ｄ）の絶縁部材２０Ｄには、３本以上のスリット２３が周壁２１に形成されている。この例は、大きい絶縁部材に適用する場合に好適であり、３本以上のスリット２３を設けることにより、径が大きい絶縁部材であっても、拡径しやすくすることができる。   In addition, three or more slits 23 are formed in the peripheral wall 21 in the insulating member 20D of FIG. This example is suitable when applied to a large insulating member, and by providing three or more slits 23, it is possible to easily increase the diameter of an insulating member having a large diameter.

尚、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

本発明に係る実施形態のシールド電線付きコネクタの分解斜視図1 is an exploded perspective view of a connector with a shielded wire according to an embodiment of the present invention. シールド電線に装着された状態の、本発明に係る実施形態のシールド電線付きコネクタの要部の縦断面図The longitudinal cross-sectional view of the principal part of the connector with a shielded wire of the embodiment according to the present invention in a state of being attached to the shielded wire 本発明に係る実施形態のシールド電線付きコネクタにおける絶縁部材の斜視図。（ａ）〜（ｄ）はそれぞれ、スリットの形状の異なる絶縁部材の斜視図The perspective view of the insulation member in the connector with a shielded electric wire of the embodiment concerning the present invention. (A)-(d) is a perspective view of the insulating member from which the shape of a slit differs, respectively 従来のランスタイプのシールド電線付きコネクタの分解斜視図Exploded perspective view of a conventional lance type connector with shielded wire シールド電線に装着された状態の、従来のランスタイプのシールド電線付きコネクタの縦断面図Longitudinal section of a conventional lance-type connector with shielded wire attached to the shielded wire 従来の圧入タイプのシールド電線付きコネクタの要部の縦断面図Longitudinal sectional view of the main part of a conventional press-fit type connector with shielded wire 従来の半割タイプのシールド電線付きコネクタの要部の縦断面図Longitudinal cross-sectional view of the main part of a conventional halved type shielded cable connector

符号の説明Explanation of symbols

１ シールド電線付きコネクタ
１０ 芯線導通端子
１１ 電気接続部
１２ 係止凸部
１３ 芯線接続部
２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ 絶縁部材
２１ 周壁
２２ 収容孔
２３ スリット
２４ 環状凹部
３０ シールド端子 DESCRIPTION OF SYMBOLS 1 Connector with shield electric wire 10 Core wire conduction | electrical_connection terminal 11 Electrical connection part 12 Locking convex part 13 Core wire connection part 20A, 20B, 20C, 20D Insulation member 21 Peripheral wall 22 Accommodating hole 23 Slit 24 Annular recessed part 30 Shield terminal

Claims (6)

内部導体である芯線と、前記芯線の外周面を包囲しながら該芯線の長手方向に延長される内部被覆と、前記内部被覆の外周面を包囲しながら前記長手方向に延長されるシールド部材と、前記シールド部材の外周面を包囲しながら前記長手方向に延長される外部被覆と、を備え、前記長手方向の一端部において、前記芯線、前記内部被覆、及び前記シールド部材それぞれの一端部が露出されたシールド電線と、
前記シールド電線の一端部に取り付けられた端子本体と、
を備えたシールド電線付きコネクタであって、
前記端子本体は、
前記シールド電線の一端部で前記芯線に電気的に接続された、相手方端子に前記芯線を電気的に接続するための導電性金属製の芯線導通端子と、
前記芯線に電気的に接続された状態の前記芯線導通端子によって貫通される収容孔を有する絶縁部材と、
前記芯線導通端子を包囲しながら前記絶縁部材を介して前記芯線導通端子を支持する円筒部が一端部に設けられ、且つ前記シールド電線の一端部で前記シールド部材に電気的に接続されるシールド部材接続部が他端部に設けられた、導電性金属製のシールド端子と、
を有し、
前記絶縁部材の周壁における前記芯線導通端子の挿通方向逆側の一端部に、前記芯線導通端子の挿通方向に沿ったスリットが形成されることによって、前記芯線導通端子を該絶縁部材の前記収容孔内に圧入するときに、該スリットによって該絶縁部材の周壁が前記芯線導通端子の挿通方向に対して垂直な方向に拡がる、
ことを特徴とするシールド電線付きコネクタ。 A core wire that is an internal conductor; an inner coating that extends in the longitudinal direction of the core wire while surrounding the outer peripheral surface of the core wire; and a shield member that extends in the longitudinal direction while surrounding the outer peripheral surface of the inner coating; An outer coating extending in the longitudinal direction while surrounding an outer peripheral surface of the shield member, and one end of each of the core wire, the inner coating, and the shield member is exposed at one end in the longitudinal direction. Shielded wire,
A terminal body attached to one end of the shielded wire;
A shielded wire connector with
The terminal body is
A conductive metal core wire conducting terminal for electrically connecting the core wire to a counterpart terminal, electrically connected to the core wire at one end of the shielded wire;
An insulating member having an accommodation hole that is penetrated by the core wire conduction terminal in a state of being electrically connected to the core wire;
A shield member which is provided at one end with a cylindrical portion supporting the core wire conduction terminal through the insulating member while surrounding the core wire conduction terminal, and is electrically connected to the shield member at one end of the shielded electric wire A shield terminal made of conductive metal provided with a connecting portion at the other end; and
Have
A slit along the insertion direction of the core wire conduction terminal is formed at one end of the peripheral wall of the insulation member on the opposite side to the insertion direction of the core wire conduction terminal, so that the core wire conduction terminal is inserted into the accommodation hole of the insulation member. When press-fitting into, the peripheral wall of the insulating member is expanded by the slit in a direction perpendicular to the insertion direction of the core wire conduction terminal.
A connector with a shielded wire, characterized by that. 前記絶縁部材の前記収容孔の内周には、前記芯線導通端子の挿通方向逆側の該絶縁部材の一端部における該収容孔の内径よりも大きな内径を有する環状溝が形成され、
前記芯線導通端子の外周には、前記絶縁部材への挿通方向順側の該芯線導通端子の外径よりも大きく、且つ前記芯線導通端子を該絶縁部材の前記収容孔内に圧入するときに前記環状溝に嵌合される外径を有する係止凸部が設けられる、
ことを特徴とする請求項１に記載のシールド電線付きコネクタ。 An annular groove having an inner diameter larger than the inner diameter of the accommodation hole at one end of the insulation member on the opposite side of the insertion direction of the core wire conduction terminal is formed on the inner periphery of the accommodation hole of the insulation member,
The outer circumference of the core wire conducting terminal is larger than the outer diameter of the core wire conducting terminal on the forward side in the insertion direction to the insulating member, and when the core wire conducting terminal is press-fitted into the accommodation hole of the insulating member, A locking projection having an outer diameter fitted in the annular groove is provided,
The connector with a shielded wire according to claim 1. 前記スリットは、前記絶縁部材の周壁における、前記芯線導通端子の挿通方向逆側の一端部から、該一端部と前記芯線導通端子の挿通方向順側の他端部との間の任意の箇所までの範囲に形成されていることを特徴とする請求項１または２に記載のシールド電線付きコネクタ。   The slit extends from one end of the peripheral wall of the insulating member on the side opposite to the insertion direction of the core wire conduction terminal to an arbitrary position between the one end and the other end on the forward direction of the core wire conduction terminal. The connector with a shielded wire according to claim 1 or 2, wherein the connector is formed in a range of. 前記スリットが、前記前記絶縁部材の周壁の周方向に離間して複数形成されていることを特徴とする請求項３に記載のシールド電線付きコネクタ。   The connector with a shielded electric wire according to claim 3, wherein a plurality of the slits are formed apart from each other in the circumferential direction of the peripheral wall of the insulating member. 前記スリットの前記任意の箇所には、前記芯線導通端子の挿通方向に対して垂直な方向の幅が該スリットよりも大きなくり抜き孔が形成されていることを特徴とする請求項３に記載のシールド電線付きコネクタ。   The shield according to claim 3, wherein a hollow having a width in a direction perpendicular to the insertion direction of the core wire conducting terminal is larger than that of the slit at the arbitrary portion of the slit. Connector with electric wire. 一つの前記スリットが、前記絶縁部材の周壁における、前記芯線導通端子の挿通方向逆側の一端部から前記芯線導通端子の挿通方向順側の他端部にかけて形成されており、該スリットにより前記絶縁部材の前記周壁は周方向に切り離されていることを特徴とする請求項１または２に記載のシールド電線付きコネクタ。   One slit is formed from one end of the peripheral wall of the insulating member on the opposite side of the insertion direction of the core wire conduction terminal to the other end on the forward side of the insertion direction of the core wire conduction terminal. The connector with a shielded electric wire according to claim 1, wherein the peripheral wall of the member is separated in a circumferential direction.
JP2008080785A 2008-03-26 2008-03-26 Connector with shield wire Abandoned JP2009238465A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011045952A1 (en) 2009-10-15 2011-04-21 シャープ株式会社 Color filter substrate and liquid crystal display device
CN104685728A (en) * 2012-10-05 2015-06-03 矢崎总业株式会社 Spacer for terminal
JP2015115112A (en) * 2013-12-09 2015-06-22 モレックス インコーポレイテドＭｏｌｅｘ Ｉｎｃｏｒｐｏｒａｔｅｄ Coaxial connector

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JPS58195983U (en) * 1982-06-15 1983-12-26 富士通株式会社 coaxial line connector
JPH0350782U (en) * 1989-09-25 1991-05-17
JP2002260792A (en) * 2001-02-28 2002-09-13 Harting Automotive Gmbh & Co Kg Plug in connector

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS58195983U (en) * 1982-06-15 1983-12-26 富士通株式会社 coaxial line connector
JPH0350782U (en) * 1989-09-25 1991-05-17
JP2002260792A (en) * 2001-02-28 2002-09-13 Harting Automotive Gmbh & Co Kg Plug in connector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011045952A1 (en) 2009-10-15 2011-04-21 シャープ株式会社 Color filter substrate and liquid crystal display device
CN104685728A (en) * 2012-10-05 2015-06-03 矢崎总业株式会社 Spacer for terminal
US9385465B2 (en) 2012-10-05 2016-07-05 Yazaki Corporation Terminal spacer
CN104685728B (en) * 2012-10-05 2016-12-21 矢崎总业株式会社 Terminal sept
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