JP2018041571A

JP2018041571A - Waterproof terminal

Info

Publication number: JP2018041571A
Application number: JP2016173292A
Authority: JP
Inventors: 康之工藤; Yasuyuki Kudo
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2016-09-06
Filing date: 2016-09-06
Publication date: 2018-03-15

Abstract

PROBLEM TO BE SOLVED: To provide a technique for restraining up-sizing of a waterproof terminal.SOLUTION: A waterproof terminal 110 includes a terminal fitting 120, and a waterproof plug 150, and has an electric wire 190 fixed thereto. A crimp part 122 includes a core wire barrel 125 on the contact part 121 side, and a rear barrel 127 adjacent to the rear side of the core wire barrel 125. The rear barrel 127 is separated into a coat caulking piece 128 and a waterproof plug caulking piece 129 by means of a slit 127b. The coat caulking piece 128 caulks the coat 191 of the electric wire 190. A waterproof plug caulking piece 129 caulks the caulking cylinder 160 of the waterproof plug 150.SELECTED DRAWING: Figure 1

Description

本発明は、防水端子に関し、例えば、防水栓と端子金具とを備える防水端子に関する。 The present invention relates to a waterproof terminal, for example, a waterproof terminal including a waterproof plug and a terminal fitting.

防水コネクタとして、被覆電線の端部に防水栓と端子（「端子金具」ともいう）とが取り付けられた防水端子が、コネクタハウジングに取り付けられる構造が知られている（例えば特許文献１参照）。特許文献１に開示の技術では、被覆電線と防水栓と端子金具との取付構造において、端子に、導体バレルと中間バレルと防水栓バレルとを一体に設け、被覆電線が挿通された防水栓を加締めて電気接続を行うとともに固定保持させている。この際、導体バレルは被覆電線の中間導体を、中間バレルは被覆電線の被覆を、防水栓バレルは防水栓をそれぞれ加締めている。 As a waterproof connector, a structure in which a waterproof terminal having a waterproof plug and a terminal (also referred to as a “terminal fitting”) attached to an end portion of a covered electric wire is attached to a connector housing is known (see, for example, Patent Document 1). In the technique disclosed in Patent Document 1, in a mounting structure of a covered electric wire, a waterproof plug, and a terminal fitting, a conductor barrel, an intermediate barrel, and a waterproof plug barrel are integrally provided on a terminal, and the waterproof plug into which the covered electric wire is inserted is provided. It is crimped to make electrical connections and to hold them fixed. At this time, the conductor barrel is caulked with the intermediate conductor of the covered electric wire, the intermediate barrel is caulked with the covered electric wire, and the waterproof plug barrel is caulked with the waterproof plug.

特開２００７−２５０５３０号公報JP 2007-250530 A

ところで、特許文献１に開示の技術では、防水栓バレルとは別に中間バレルを設ける構造となっているが、この構造は、被覆電線に引っ張り力が作用した際、導体バレルに加締められている中間導体に加わる引っ張り力を緩和し、中間導体が衝撃破断することを抑制するためである。しかし、中間バレルと防水栓バレルは端子の軸方向で前後に離間して設けられており、端子自体が大型化してしまうという課題があった。 By the way, in the technique disclosed in Patent Document 1, an intermediate barrel is provided separately from the waterproof plug barrel, but this structure is crimped to the conductor barrel when a tensile force acts on the covered electric wire. This is because the tensile force applied to the intermediate conductor is alleviated and the intermediate conductor is prevented from being impact broken. However, the intermediate barrel and the waterproof plug barrel are provided apart from each other in the axial direction of the terminal, and there is a problem that the terminal itself becomes large.

本発明の目的は、このような状況に鑑みてなされたものであり、上記課題を解決する技術を提供することにある。 The object of the present invention is made in view of such a situation, and is to provide a technique for solving the above-described problems.

本発明は、相手方端子と嵌合し電気的に接続する電気接続部と電線が圧着される圧着部とを一体に設けた端子金具と、前記電線に装着される防水栓と、を備える防水端子であって、前記圧着部は、前記電気接続部の側に設けられ、前記電線の芯線を加締める芯線バレルと、前記芯線バレルに前記電気接続部と反対側に隣接して設けられ、前記電線の被覆を加締める後方バレルと、を備え、前記防水栓は、コネクタハウジングに配置されたときに防水機能を発揮するシール部を有する筒状部と、前記筒状部の両端を貫通し、前記電線が挿通される挿通孔と、前記筒状部の前記電気接続部の側の一端に突出する突出部と、を備え、前記後方バレルは、前記電線を加締める際に、前記被覆を有する前記電線と前記突出部とを加締める。
また、前記防水栓の前記突出部は、前記筒状部より小径であって前記筒状部の前記電気接続部の側の一端に円筒形状で突出し、前記挿通孔の一端が前記突出部に形成されてもよい。
また、前記後方バレルは、スリットを介して被覆加締め片と防水栓加締め片とを備え、前記被覆加締め片は前記挿通孔から出た前記電線の前記被覆を加締め、前記防水栓加締め片は、前記突出部を加締めてもよい。
また、前記防水栓の前記突出部は、半筒状であって、前記挿通孔から前記電気接続部の側へ出た前記電線が配置される電線配置部を備え、前記端子金具の前記後方バレルは、前記電線を加締める際に、前記電線配置部に配置された前記被覆を有する前記電線を前記突出部とともに抱え込んで加締めてもよい。
また、前記端子金具の前記後方バレルは、基部に係止孔を備え、前記防水栓の前記突出部は、前記係止孔に係合する係合突起を備えてもよい。
また、前記端子金具の前記後方バレルは、前記電線の前記被覆を食い込ませる食い込み部を備えてもよい。 The present invention relates to a waterproof terminal comprising: a terminal fitting integrally provided with an electrical connection portion that fits and electrically connects with a counterpart terminal; and a crimping portion to which an electric wire is crimped; and a waterproof plug that is attached to the electric wire. The crimp portion is provided on the electrical connection portion side, a core wire barrel for caulking the core wire of the electric wire, and provided on the core wire barrel adjacent to the opposite side of the electric connection portion. A rear barrel for caulking the coating of, and the waterproof plug has a cylindrical portion having a seal portion that exhibits a waterproof function when disposed in a connector housing, and penetrates both ends of the cylindrical portion, An insertion hole through which an electric wire is inserted, and a protruding portion protruding to one end of the cylindrical portion on the side of the electrical connection portion, and the rear barrel includes the coating when the electric wire is caulked. The electric wire and the protruding portion are crimped.
Further, the protruding portion of the waterproof plug is smaller in diameter than the cylindrical portion and protrudes in a cylindrical shape at one end of the cylindrical portion on the side of the electrical connection portion, and one end of the insertion hole is formed in the protruding portion. May be.
Further, the rear barrel includes a covering crimping piece and a waterproof plug crimping piece through a slit, and the covering crimping piece crimps the coating of the wire coming out of the insertion hole, and The fastening piece may crimp the projecting portion.
In addition, the protrusion of the waterproof plug has a semi-cylindrical shape, and includes an electric wire arrangement portion in which the electric wire protruding from the insertion hole toward the electric connection portion is arranged, and the rear barrel of the terminal fitting When caulking the electric wire, the electric wire having the coating disposed in the electric wire placement portion may be held together with the protruding portion and caulked.
The rear barrel of the terminal fitting may include a locking hole in a base portion, and the protruding portion of the waterproof plug may include an engaging protrusion that engages with the locking hole.
Moreover, the said back barrel of the said terminal metal fitting may be provided with the biting part which bites into the said coating | cover of the said electric wire.

本発明によれば、防水端子の大型化を抑制することができる。 According to the present invention, an increase in the size of the waterproof terminal can be suppressed.

第１の実施形態に係る、防水端子を示す図である。It is a figure which shows the waterproof terminal based on 1st Embodiment. 第１の実施形態に係る、端子金具の展開図である。It is an expanded view of the terminal metal fitting based on 1st Embodiment. 第１の実施形態に係る、防水栓の側面図である。It is a side view of a waterproofing stopper concerning a 1st embodiment. 第１の実施形態に係る、防水栓の正面図である。It is a front view of a waterproofing stopper concerning a 1st embodiment. 第２の実施形態に係る、防水端子を示す図である。It is a figure which shows the waterproof terminal based on 2nd Embodiment. 第２の実施形態に係る、端子金具の展開図である。It is an expanded view of the terminal metal fitting based on 2nd Embodiment. 第２の実施形態に係る、防水栓の側面図である。It is a side view of a waterproofing stopper concerning a 2nd embodiment. 第２の実施形態に係る、防水栓の正面図である。It is a front view of a waterproofing stopper concerning a 2nd embodiment.

以下、発明を実施するための形態（以下、「実施形態」という）を、図面を参照しつつ説明する。以下の実施形態において、図中、便宜的にＸ１方向を前方向、Ｘ２方向を後方向、Ｙ１方向を右方向、Ｙ２方向を左方向、Ｚ１方向を上方向、Ｚ２を下方向として説明する。 Hereinafter, modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described with reference to the drawings. In the following embodiments, for convenience, the X1 direction will be referred to as the forward direction, the X2 direction as the backward direction, the Y1 direction as the right direction, the Y2 direction as the left direction, the Z1 direction as the upward direction, and the Z2 as the downward direction.

＜第１の実施形態＞
図１は本実施形態に係る防水端子１１０の側面図である。図２は端子金具１２０の展開図である。図３は防水栓１５０の側面図である。図４は防水栓１５０の正面図である。 <First Embodiment>
FIG. 1 is a side view of a waterproof terminal 110 according to the present embodiment. FIG. 2 is a development view of the terminal fitting 120. FIG. 3 is a side view of the waterproof plug 150. FIG. 4 is a front view of the waterproof plug 150.

図１に示すように、電線付き防水端子１１０は、雌型の端子金具１２０と、防水栓１５０とを備える。図示では、防水端子１１０には電線１９０が取り付けられている。 As shown in FIG. 1, the waterproof terminal 110 with electric wire includes a female terminal fitting 120 and a waterproof plug 150. In the drawing, an electric wire 190 is attached to the waterproof terminal 110.

電線１９０は、単素線または複素線からなる芯線１９２と、芯線１９２の周囲を覆う被覆１９１とを備える。被覆１９１は、例えばポリプロリレンや塩化ビニル等の絶縁性樹脂により成形されている。被覆１９１の電線末端部分で局所的に除去され、その部分で芯線１９２が露出する。芯線１９２の露出部分とその近傍の被覆１９１が端子金具１２０に加締められ固定される。 The electric wire 190 includes a core wire 192 made of a single element wire or a complex wire, and a coating 191 that covers the periphery of the core wire 192. The coating 191 is formed of an insulating resin such as polypropylene or vinyl chloride. It is locally removed at the end portion of the electric wire of the coating 191 and the core wire 192 is exposed at that portion. The exposed portion of the core wire 192 and the covering 191 in the vicinity thereof are crimped and fixed to the terminal fitting 120.

防水栓１５０は、略円筒形状を呈しており、例えばシリコン系ゴムのような柔軟性の高い材料で形成されている。具体的には、防水栓１５０は、図３及び図４に示すように、円筒状の円筒部１５１と、円筒部１５１の前面１５２に同芯状で円筒部１５１より小径に設けられた筒状に突出する加締め筒部１６０（突出部）とを備える。 The waterproof plug 150 has a substantially cylindrical shape, and is formed of a highly flexible material such as silicon rubber. Specifically, as shown in FIGS. 3 and 4, the waterproof plug 150 has a cylindrical shape that is concentric with the cylindrical portion 151 and the front surface 152 of the cylindrical portion 151 and is smaller in diameter than the cylindrical portion 151. And a caulking tube portion 160 (protruding portion).

円筒部１５１の外周面の前方側には、外径が変化する凹凸状のシール部１５４が形成されている。シール部１５４の凸形状は、シール部１５４の後方部分の外周面より外径が大きく形成されている。 On the front side of the outer peripheral surface of the cylindrical portion 151, an uneven seal portion 154 whose outer diameter changes is formed. The convex shape of the seal portion 154 has an outer diameter larger than the outer peripheral surface of the rear portion of the seal portion 154.

防水栓１５０には、軸中心部分において、加締め筒部１６０の前面１６２と円筒部１５１の後面１５３とを貫通する所定径の挿通孔１５５が設けられている。挿通孔１５５には、電線１９０が挿通される。 The waterproof plug 150 is provided with an insertion hole 155 having a predetermined diameter that penetrates the front surface 162 of the crimping tube portion 160 and the rear surface 153 of the cylindrical portion 151 at the axial center portion. The electric wire 190 is inserted through the insertion hole 155.

端子金具１２０は、導電性金属板を打ち抜き曲げ加工により形成される。端子金具１２０は、相手方端子と嵌合し電気的に接続する接触部１２１と、その後方に設けられた圧着部１２２とを一体に備える。また、接触部１２１の前端部分には、接触部１２１の内部に折り返し配置されるバネ部１２４が設けられている。なお、本実施形態では、接触部１２１としてボックス状に形成される雌型を例示しているが、これに限る趣旨ではなく、雄型であってもよい。 The terminal fitting 120 is formed by punching and bending a conductive metal plate. The terminal fitting 120 is integrally provided with a contact portion 121 that is fitted and electrically connected to a counterpart terminal, and a crimping portion 122 provided at the rear thereof. Further, a spring portion 124 that is folded back inside the contact portion 121 is provided at the front end portion of the contact portion 121. In this embodiment, a female mold formed in a box shape is illustrated as the contact portion 121. However, the present invention is not limited to this and may be a male mold.

圧着部１２２は、接触部１２１側の芯線バレル１２５（「導体バレル」とも言う。）と、芯線バレル１２５の後方側に隣接する後方バレル１２７とを備える。芯線バレル１２５と後方バレル１２７とは、図２の展開状態で、それぞれ端子軸方向（図中ではＸ１−Ｘ２方向）に延びる基部１２５ａ、１２７ａから外方向、より具体的には左右方向（図中ではＹ１−Ｙ２方向）に延びる略左右対称の形状を呈している。 The crimping part 122 includes a core wire barrel 125 (also referred to as a “conductor barrel”) on the contact part 121 side, and a rear barrel 127 adjacent to the rear side of the core wire barrel 125. The core wire barrel 125 and the rear barrel 127 are in the deployed state of FIG. 2, respectively, outward from the base portions 125a, 127a extending in the terminal axis direction (X1-X2 direction in the drawing), more specifically in the left-right direction (in the drawing). In this case, the shape is substantially symmetrical with respect to the Y1-Y2 direction.

芯線バレル１２５は、図１に示すように、電線１９０が取り付けられる際に、電線末端部分で局所的に露出している芯線１９２を抱え込むように曲げ加工される。 As shown in FIG. 1, the core barrel 125 is bent so as to hold the core wire 192 locally exposed at the end portion of the electric wire when the electric wire 190 is attached.

後方バレル１２７は、外方向に延出した端部から中心側（すなわち基部１２７ａ側）に向かって、所定長のスリット１２７ｂが形成されている。すなわち、スリット１２７ｂによって、後方バレル１２７の延出端部近傍の領域は、前方側の被覆加締め片１２８と、後ろ側の防水栓加締め片１２９に分離される。図示では、被覆加締め片１２８と防水栓加締め片１２９は前後方向に同幅に示しているが、これに限る趣旨ではなく、異なる幅となってもよい。 The rear barrel 127 is formed with a slit 127b having a predetermined length from an end portion extending outward to the center side (that is, the base portion 127a side). That is, the slit 127b separates the region in the vicinity of the extended end portion of the rear barrel 127 into the front cover crimping piece 128 and the rear waterproof plug crimping piece 129. In the drawing, the covering crimping piece 128 and the waterproof plug crimping piece 129 are shown to have the same width in the front-rear direction, but the present invention is not limited to this and may have different widths.

図１に示すように、被覆加締め片１２８は、電線１９０の被覆１９１を加締める。また、防水栓加締め片１２９は、防水栓１５０の加締め筒部１６０を加締める。 As shown in FIG. 1, the coating crimping piece 128 crimps the coating 191 of the electric wire 190. Further, the waterproof plug crimping piece 129 crimps the crimping tube portion 160 of the waterproof plug 150.

被覆加締め片１２８を用いて被覆１９１を加締めることによって、電線引張時の芯線１９２に加わる応力をより効果的に緩和でき、芯線１９２の破断を防止できる。また、防水栓加締め片１２９と被覆加締め片１２８とがスリット１２７ｂを介してのみ隣接しているため、端子金具１２０の小型化が容易になる。
＜第２の実施形態＞
図５は本実施形態に係る防水端子２１０の側面図である。図６は端子金具２２０の展開図である。図７は防水栓２５０の側面図である。図８は防水栓２５０の正面図である。以下では、第１の実施形態と異なる点を主に説明し、同様の構成については適宜説明を省略する。 By crimping the coating 191 using the coating crimping piece 128, the stress applied to the core wire 192 during the wire pulling can be more effectively relaxed, and the core wire 192 can be prevented from being broken. Further, since the waterproof plug crimping piece 129 and the covering crimping piece 128 are adjacent to each other only through the slit 127b, the terminal fitting 120 can be easily downsized.
<Second Embodiment>
FIG. 5 is a side view of the waterproof terminal 210 according to the present embodiment. FIG. 6 is a development view of the terminal fitting 220. FIG. 7 is a side view of the waterproof plug 250. FIG. 8 is a front view of the waterproof plug 250. Hereinafter, differences from the first embodiment will be mainly described, and description of similar configurations will be omitted as appropriate.

図５に示すように、防水端子２１０は、雌型の端子金具２２０と、防水栓２５０とを備える。図示では、防水端子２１０には電線２９０が取り付けられている。 As shown in FIG. 5, the waterproof terminal 210 includes a female terminal fitting 220 and a waterproof plug 250. In the drawing, an electric wire 290 is attached to the waterproof terminal 210.

電線２９０は、芯線２９２と、芯線２９２の周囲を覆う被覆２９１とを備える。被覆２９１の電線末端部分で局所的に除去され、露出した芯線２９２とその近傍の被覆２９１が端子金具２２０に加締められ固定される。 The electric wire 290 includes a core wire 292 and a coating 291 that covers the periphery of the core wire 292. The core wire 292 that is locally removed at the end portion of the electric wire of the covering 291 and the covering 291 in the vicinity thereof are crimped and fixed to the terminal fitting 220.

防水栓２５０は、略円筒形状を呈しており、例えばシリコン系ゴムのような柔軟性の高い材料で形成されている。具体的には、防水栓２５０は、図７及び図８に示すように、円筒状の円筒部２５１と、円筒部２５１の一方の端部（すなわち前面２５２）に設けられた加締め半筒部２６０（突出部）とを備える。 The waterproof plug 250 has a substantially cylindrical shape, and is formed of a highly flexible material such as silicon rubber. Specifically, as shown in FIGS. 7 and 8, the waterproof plug 250 includes a cylindrical cylindrical portion 251 and a caulking half-cylindrical portion provided at one end portion (that is, the front surface 252) of the cylindrical portion 251. 260 (protrusion).

円筒部２５１の外周面の前方側には、外径が変化する凹凸状のシール部２５４が形成されている。シール部２５４の凸形状は、シール部２５４の後方部分の外周面より外径が大きく形成されている。 On the front side of the outer peripheral surface of the cylindrical portion 251, an uneven seal portion 254 whose outer diameter changes is formed. The convex shape of the seal portion 254 is formed to have a larger outer diameter than the outer peripheral surface of the rear portion of the seal portion 254.

円筒部２５１には、軸中心部分において、前面２５２と後面２５３とを前後に貫通する所定径の挿通孔２５５が設けられている。挿通孔２５５には、電線２９０が挿通される。 The cylindrical portion 251 is provided with an insertion hole 255 having a predetermined diameter that penetrates the front surface 252 and the rear surface 253 in the front-rear direction at the axial center portion. The electric wire 290 is inserted through the insertion hole 255.

加締め半筒部２６０は、円筒部２５１の前面２５２から同芯状に延出する所定径（ただし、円筒部２５１より小径である。）の円筒形状の半分を取り除いた形状、図中では上半分を取り除き下半分が半円の外周面２６１となっている。 The caulking half-cylinder portion 260 has a shape obtained by removing a half of a cylindrical shape having a predetermined diameter (which is smaller than the cylindrical portion 251) extending concentrically from the front surface 252 of the cylindrical portion 251, and is the Half is removed and the lower half is a semicircular outer peripheral surface 261.

加締め半筒部２６０の上面２６２には、挿通孔２５５から連続する断面半円の溝部２５５ａが形成されている。すなわち、溝部２５５ａは、挿通孔２５５を半分にした半円形状で前後方向に延びている。端子金具２２０、防水栓２５０及び電線２９０を圧着固定する際に、この溝部２５５ａには、挿通孔２５５に挿通された電線２９０の電線末端部分近傍の被覆２９１が配置される。すなわち、溝部２５５ａは、被覆２９１が取り除かれていない状態の電線２９０が配置される電線配置部として機能する。 On the upper surface 262 of the caulking half tube portion 260, a groove portion 255a having a semicircular cross section continuous from the insertion hole 255 is formed. That is, the groove portion 255a has a semicircular shape in which the insertion hole 255 is halved and extends in the front-rear direction. When the terminal fitting 220, the waterproof plug 250, and the electric wire 290 are pressure-bonded and fixed, a coating 291 in the vicinity of the end portion of the electric wire 290 inserted through the insertion hole 255 is disposed in the groove portion 255a. That is, the groove part 255a functions as an electric wire arrangement | positioning part by which the electric wire 290 of the state from which the coating | cover 291 is not removed is arrange | positioned.

加締め半筒部２６０の外周面２６１の先端部分の最下端に下方向に所定長だけ突出する係合突起２６５が形成されている。係合突起２６５は、後述する端子金具２２０の係止孔２３０に嵌め込まれる。 An engagement protrusion 265 that protrudes downward by a predetermined length is formed at the lowermost end of the distal end portion of the outer peripheral surface 261 of the caulking half tube portion 260. The engaging protrusion 265 is fitted into a locking hole 230 of the terminal fitting 220 described later.

端子金具２２０は、接触部２２１とその後方の圧着部２２２とを一体に備える。また、接触部２２１の前端部分には、接触部２２１の内部に折り返し配置されるバネ部２２４が設けられている。 The terminal fitting 220 integrally includes a contact portion 221 and a crimping portion 222 behind the contact portion 221. In addition, a spring portion 224 that is folded back inside the contact portion 221 is provided at the front end portion of the contact portion 221.

圧着部２２２は、接触部２２１側の芯線バレル２２５と、芯線バレル２２５の後方側に隣接する後方バレル２２７とを備える。芯線バレル２２５と後方バレル２２７とは、図６の展開状態で、それぞれ基部２２５ａ、２２７ａから外方向、より具体的には左右方向（図中ではＹ１−Ｙ２方向）に延びる略左右対称の形状を呈している。 The crimping part 222 includes a core wire barrel 225 on the contact part 221 side and a rear barrel 227 adjacent to the rear side of the core wire barrel 225. The core wire barrel 225 and the rear barrel 227 have substantially left-right symmetrical shapes extending from the bases 225a and 227a in the outward direction, more specifically in the left-right direction (Y1-Y2 direction in the drawing) in the deployed state of FIG. Presents.

芯線バレル２２５は、図５に示すように、電線２９０が取り付けられる際に、電線末端部分で被覆２９１が取り除かれ局所的に露出している芯線２９２を抱え込みむよう曲げ加工される。より具体的には、電線２９０のうち溝部２５５ａから前方へ突出する部分では、被覆２９１が取り除かれ芯線２９２が露出している。この露出している芯線２９２が芯線バレル２２５と圧着される。この構成により、芯線バレル２２５と芯線２９２の露出部分とが適切に圧着される。 As shown in FIG. 5, the core barrel 225 is bent so as to hold the core wire 292 that is locally exposed by removing the coating 291 at the end portion of the wire when the wire 290 is attached. More specifically, in the portion of the electric wire 290 that protrudes forward from the groove portion 255a, the coating 291 is removed and the core wire 292 is exposed. The exposed core wire 292 is crimped to the core wire barrel 225. With this configuration, the core wire barrel 225 and the exposed portion of the core wire 292 are appropriately crimped.

後方バレル２２７は、底面に相当する基部２２７ａの所定領域の係止孔２３０と、外方向に延出した端部近傍の凹溝部２２８とを備える。係止孔２３０には、上述したように、加締め半筒部２６０の係合突起２６５が係合する。凹溝部２２８は、前後に平行に設けられた前方凹溝部２２８ａと後方凹溝部２２８ｂとを備える。 The rear barrel 227 includes a locking hole 230 in a predetermined region of the base 227a corresponding to the bottom surface, and a concave groove 228 near the end extending outward. As described above, the engagement protrusion 265 of the caulking half tube portion 260 engages with the locking hole 230. The concave groove portion 228 includes a front concave groove portion 228a and a rear concave groove portion 228b provided in parallel in the front-rear direction.

後方バレル２２７は、電線２９０が取り付けられる際に、電線２９０の被覆２９１及び防水栓２５０の加締め半筒部２６０を抱え込むように曲げ加工される。この曲げ加工によって、加締め半筒部２６０の溝部２５５ａに嵌まっている電線２９０、より具体的は被覆２９１が着いた状態の電線２９０が、加締め半筒部２６０と一緒に後方バレル２２７と圧着される。 The rear barrel 227 is bent so as to hold the covering 291 of the electric wire 290 and the crimped half tube portion 260 of the waterproof plug 250 when the electric wire 290 is attached. By this bending process, the electric wire 290 fitted in the groove portion 255a of the caulking half cylindrical portion 260, more specifically, the electric wire 290 with the covering 291 attached, together with the caulking half cylindrical portion 260 and the rear barrel 227, Crimped.

後方バレル２２７によって電線２９０が加締められた際に、凹溝部２２８（前方凹溝部２２８ａ、後方凹溝部２２８ｂ）が、被覆２９１が食い込む。なお、電線２９０が加締められたときに被覆２９１が食い込む機能の観点において、凹溝部２２８の代わりにほかの形状、例えばドット状の凹形状が設けられてもよい。この構成により、電線２９０と、加締め半筒部２６０と、後方バレル２２７とが適切に圧着される。 When the electric wire 290 is crimped by the rear barrel 227, the coating 291 bites into the concave groove portions 228 (the front concave groove portion 228a and the rear concave groove portion 228b). In addition, from the viewpoint of the function that the coating 291 bites into when the electric wire 290 is crimped, another shape such as a dot-like concave shape may be provided instead of the concave groove portion 228. With this configuration, the electric wire 290, the caulking half cylinder portion 260, and the rear barrel 227 are appropriately crimped.

後方バレル２２７を電線２９０の被覆２９１に直接加締めることにより、電線引張時の芯線２９２に加わる応力をより効果的に緩和でき、芯線２９２の破断を防止できる。また、係合突起２６５や凹溝部２２８の係合作用により、電線引張時の芯線２９２に加わる応力を更に緩和できる。言い換えると、係止孔２３０と係合突起２６５との係合部と、被覆２９１の凹溝部２２８への食い込み部とが、実質的に電線引張時の引張力を受けることになる。その結果、芯線バレル２２５に加締められた芯線２９２に加わる応力を緩和している。なお、電線引張の応力が大きくない場合は、係止孔２３０と係合突起２６５との係合部、又は被覆２９１の凹溝部２２８への食い込み部のいずれか一方の構造のみであってもよい。 By directly caulking the rear barrel 227 to the coating 291 of the electric wire 290, the stress applied to the core wire 292 when the electric wire is pulled can be more effectively relaxed, and the breakage of the core wire 292 can be prevented. Further, the stress applied to the core wire 292 when the electric wire is pulled can be further relaxed by the engaging action of the engaging protrusion 265 and the concave groove portion 228. In other words, the engaging portion between the locking hole 230 and the engaging protrusion 265 and the biting portion of the covering 291 into the concave groove portion 228 substantially receive the tensile force during the wire pulling. As a result, the stress applied to the core wire 292 crimped to the core wire barrel 225 is relaxed. In addition, when the stress of electric wire tension is not large, only one of the structure of the engagement portion between the locking hole 230 and the engagement protrusion 265 or the biting portion into the concave groove portion 228 of the covering 291 may be used. .

以上、本発明を実施形態をもとに説明した。この実施形態は例示であり、それらの各構成要素及びその組合せにいろいろな変形例が可能なこと、またそうした変形例も本発明の範囲にあることは当業者に理解されるところである。 The present invention has been described based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to each of those components and combinations thereof, and such modifications are also within the scope of the present invention.

例えば、第１の実施形態の後方バレル１２７に、第２の実施形態の凹溝部２２８（食い込み部）の形状が設けられてもよい。同様に、第１の実施形態の後方バレル１２７と加締め筒部１６０に、それぞれ係止孔２３０や係合突起２６５の構造・機能が備わってもよい。 For example, the rear barrel 127 of the first embodiment may be provided with the shape of the concave groove portion 228 (bite portion) of the second embodiment. Similarly, the rear barrel 127 and the caulking tube portion 160 of the first embodiment may be provided with the structures and functions of the locking holes 230 and the engaging protrusions 265, respectively.

１１０、２１０防水端子
１２０、２２０端子金具
１２１、２２１接触部
１２２、２２２圧着部
１２４、２２４バネ部
１２５、２２５芯線バレル
１２５ａ、１２７ａ、２２５ａ、２２７ａ基部
１２７、２２７後方バレル
１２７ｂスリット
１２８被覆加締め片
１２９防水栓加締め片
１５０、２５０防水栓
１５１、２５１円筒部
１５２、２５２前面
１５３、２５３後面
１５４、２５４シール部
１５５、２５５挿通孔
１６０加締め筒部
１６２前面
１９０、２９０電線
１９１、２９１被覆
１９２、２９２芯線
２２８凹溝部
２２８ａ前方凹溝部
２２８ｂ後方凹溝部
２３０係止孔
２５５ａ溝部
２６０加締め半筒部
２６１外周面
２６２上面
２６５係合突起 110, 210 Waterproof terminal 120, 220 Terminal fitting 121, 221 Contact part 122, 222 Crimp part 124, 224 Spring part 125, 225 Core wire barrel 125a, 127a, 225a, 227a Base part 127, 227 Rear barrel 127b Slit 128 Covering caulking piece 129 Waterproof stopper crimping pieces 150, 250 Waterproof stoppers 151, 251 Cylindrical parts 152, 252 Front faces 153, 253 Rear faces 154, 254 Seal parts 155, 255 Insertion holes 160 Fastening cylinder parts 162 Front face 190, 290 Electric wires 191, 291 Cover 192 , 292 Core wire 228 Groove portion 228a Front groove portion 228b Rear groove portion 230 Locking hole 255a Groove portion 260 Clamping half tube portion 261 Outer peripheral surface 262 Upper surface 265 Engagement protrusion

Claims

相手方端子と嵌合し電気的に接続する電気接続部と電線が圧着される圧着部とを一体に設けた端子金具と、前記電線に装着される防水栓と、を備える防水端子であって、
前記圧着部は、
前記電気接続部の側に設けられ、前記電線の芯線を加締める芯線バレルと、
前記芯線バレルに前記電気接続部と反対側に隣接して設けられ、前記電線の被覆を加締める後方バレルと、
を備え、
前記防水栓は、
コネクタハウジングに配置されたときに防水機能を発揮するシール部を有する筒状部と、
前記筒状部の両端を貫通し、前記電線が挿通される挿通孔と、
前記筒状部の前記電気接続部の側の一端に突出する突出部と、
を備え、
前記後方バレルは、前記電線を加締める際に、前記被覆を有する前記電線と前記突出部とを加締める
ことを特徴とする防水端子。 A waterproof terminal comprising: a terminal fitting integrally provided with an electrical connection portion that is electrically connected to and mated with a counterpart terminal; and a crimping portion to which a wire is crimped, and a waterproof plug that is attached to the wire,
The crimping part is
A core barrel that is provided on the side of the electrical connection portion and caulks the core of the electric wire;
A rear barrel that is provided adjacent to the core wire barrel on the opposite side of the electrical connection, and caulks the coating of the wire;
With
The waterproof plug is
A cylindrical portion having a seal portion that exhibits a waterproof function when placed in the connector housing;
An insertion hole that penetrates through both ends of the tubular portion and through which the electric wire is inserted;
A projecting portion projecting to one end of the tubular portion on the side of the electrical connection portion;
With
The said rear barrel crimps the said electric wire which has the said coating | cover, and the said protrusion part when crimping the said electric wire. The waterproof terminal characterized by the above-mentioned.

前記防水栓の前記突出部は、前記筒状部より小径であって前記筒状部の前記電気接続部の側の一端に円筒形状で突出し、前記挿通孔の一端が前記突出部に形成されていることを特徴とする請求項１に記載の防水端子。 The protruding portion of the waterproof plug has a smaller diameter than the cylindrical portion, protrudes in a cylindrical shape at one end of the cylindrical portion on the side of the electrical connection portion, and one end of the insertion hole is formed in the protruding portion. The waterproof terminal according to claim 1, wherein:

前記後方バレルは、スリットを介して被覆加締め片と防水栓加締め片とを備え、
前記被覆加締め片は前記挿通孔から出た前記電線の前記被覆を加締め、
前記防水栓加締め片は、前記突出部を加締める
ことを特徴とする請求項１または２に記載の防水端子。 The rear barrel includes a covering crimping piece and a waterproof stopper crimping piece through a slit,
The covering crimping piece is caulking the covering of the electric wire coming out of the insertion hole,
The waterproof terminal according to claim 1, wherein the waterproof plug crimping piece crimps the protruding portion.

前記防水栓の前記突出部は、半筒状であって、前記挿通孔から前記電気接続部の側へ出た前記電線が配置される電線配置部を備え、
前記端子金具の前記後方バレルは、前記電線を加締める際に、前記電線配置部に配置された前記被覆を有する前記電線を前記突出部とともに抱え込んで加締めることを特徴とする請求項１に記載の防水端子。 The protrusion of the waterproof plug has a semi-cylindrical shape, and includes an electric wire arrangement portion in which the electric wire that has come out from the insertion hole toward the electric connection portion is arranged.
The said back barrel of the said terminal metal fitting clamps the said electric wire which has the said coating | cover arrange | positioned at the said electric wire arrangement | positioning part with the said protrusion part, when caulking the said electric wire, It is characterized by the above-mentioned. Waterproof terminal.

前記端子金具の前記後方バレルは、基部に係止孔を備え、
前記防水栓の前記突出部は、前記係止孔に係合する係合突起を備えることを特徴とする請求項１から４までのいずれかに記載の防水端子。 The rear barrel of the terminal fitting is provided with a locking hole in the base,
The waterproof terminal according to any one of claims 1 to 4, wherein the protruding portion of the waterproof plug includes an engaging protrusion that engages with the locking hole.

前記端子金具の前記後方バレルは、前記電線の前記被覆を食い込ませる食い込み部を備えることを特徴とする請求項１から５までのいずれかに記載の防水端子。 The waterproof terminal according to any one of claims 1 to 5, wherein the rear barrel of the terminal fitting includes a biting portion for biting the coating of the electric wire.