JP3190274U - Vehicle power socket - Google Patents

Abstract

【課題】車両用電気機器のプラグを容易かつスムーズに挿入できると共に、車両の振動による抜けや電気的接触不良を確実に防止可能な車両用電源ソケットを提供する。【解決手段】車両用電気機器のプラグ３が差し込まれるプラグ差込孔10を有すると共に、プラグ３に電気的に接続して車両用電気機器に車両電源の電力を供給するための車両用電源ソケットであって、プラグ３が差し込まれる開口部１ａの外周壁部の外周面に雄ネジ部11を有すると共に開口端縁１ｂからプラグ差込孔10の軸心方向Ｎに沿った縮径用の切欠部12を有するソケット本体１と、ソケット本体１の雄ネジ部11に螺着して開口部１ａを縮径させるためのテーパ状の雌ネジ部21を有する筒状のナット部材２と、を備えたものである。【選択図】図２PROBLEM TO BE SOLVED: To provide a power socket for a vehicle which can easily and smoothly insert a plug of an electric device for a vehicle and can surely prevent disconnection due to vibration of the vehicle and poor electrical contact. SOLUTION: The vehicle power socket has a plug insertion hole 10 into which a plug 3 of the vehicle electric device is inserted, and is electrically connected to the plug 3 to supply the power of the vehicle power source to the vehicle electric device. A notch for reducing the diameter along the axial direction N of the plug insertion hole 10 from the opening end edge 1b while having a male screw portion 11 on the outer peripheral surface of the outer peripheral wall portion of the opening 1a into which the plug 3 is inserted. A socket main body 1 having a portion 12 and a tubular nut member 2 having a tapered female screw portion 21 for screwing to the male screw portion 11 of the socket main body 1 to reduce the diameter of the opening 1a are provided. It is a thing. [Selection diagram] Fig. 2

Description

本考案は、車両用電源ソケットに関する。   The present invention relates to a vehicle power socket.

従来、自動車や大型スクーター等の車両に、ポータブルナビゲーション装置や、ドライブレコーダー装置、レーザー探知機等の車両用電気機器を設ける際、車両用電気機器のプラグを車両用電源ソケットに、差し込んで、車両電源（バッテリー）から電力を得ていた（例えば、特許文献１参照）。   Conventionally, when a vehicle navigation device, a drive recorder device, a laser detector or the like is installed in a vehicle such as an automobile or a large scooter, the vehicle electrical device plug is inserted into the vehicle power socket, and the vehicle Electric power was obtained from a power source (battery) (see, for example, Patent Document 1).

特開平９−２２７５７号公報Japanese Patent Laid-Open No. 9-22757

しかし、車両の振動によって、車両用電源ソケットから車両用電気機器のプラグが抜けてしまうといった問題があった。   However, there has been a problem that the plug of the electric device for the vehicle is disconnected from the power socket for the vehicle due to the vibration of the vehicle.

そこで、本考案は、車両用電気機器のプラグを容易かつスムーズに挿入できると共に、車両の振動による抜けを確実に防止可能な車両用電源ソケットの提供を目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle power socket that can easily and smoothly insert a plug of an electric device for a vehicle and can reliably prevent the plug from being pulled out due to vibration of the vehicle.

上記目的を達成するために、本考案の車両用電源ソケットは、車両用電気機器のプラグが差し込まれるプラグ差込孔を有すると共に、該プラグに電気的に接続して上記車両用電気機器に車両電源の電力を供給するための車両用電源ソケットに於て、上記プラグが差し込まれる開口部の外周壁部の外周面に雄ネジ部を有すると共に開口端縁から上記プラグ差込孔の軸心方向に沿った縮径用の切欠部を有するソケット本体と、上記ソケット本体の上記雄ネジ部に螺着して上記開口部を縮径させるためのテーパ状の雌ネジ部を有する筒状のナット部材と、を備えたものである。   In order to achieve the above object, a power socket for a vehicle according to the present invention has a plug insertion hole into which a plug of a vehicle electrical device is inserted, and is electrically connected to the plug and connected to the vehicle electrical device. In a power socket for a vehicle for supplying power from a power source, an external thread portion is provided on an outer peripheral surface of an outer peripheral wall portion of the opening portion into which the plug is inserted, and an axial direction of the plug insertion hole extends from an opening edge. A cylindrical nut member having a socket body having a cutout portion for reducing the diameter along the socket, and a tapered female screw portion for screwing into the male screw portion of the socket body to reduce the diameter of the opening And.

本考案によれば、車両用電気機器のプラグを、容易かつスムーズに差込可能としながらも、車両の振動によるプラグの抜けを確実に防止できる。また、振動によってプラグが抜け方向へ移動して電気的接触不良が発生するのを防止できる。部品点数の少ない簡素な構造で容易に製造できる。抜け止め操作及び抜け止め解除操作を容易かつ迅速に行うことができる。   ADVANTAGE OF THE INVENTION According to this invention, while the plug of the electric equipment for vehicles can be inserted easily and smoothly, the disconnection of the plug by the vibration of the vehicle can be surely prevented. Moreover, it is possible to prevent the plug from moving in the pulling direction due to vibration and causing poor electrical contact. It can be easily manufactured with a simple structure with a small number of parts. The retaining operation and the retaining release operation can be performed easily and quickly.

本考案の実施形態を示す分解側面図である。It is a disassembled side view which shows embodiment of this invention. 待機状態の要部断面側面図である。It is a principal part cross-sectional side view of a standby state. 差込完了状態の要部断面図である。It is principal part sectional drawing of an insertion completion state. プラグ抜け止め状態の要部断面側面図である。It is a principal part cross-section side view of a plug removal prevention state. プラグ抜け止め状態の要部断面図である。It is principal part sectional drawing of a plug removal prevention state.

以下、図示の実施形態に基づき本考案を詳説する。
自動車や大型スクーター等の車両に、ポータブルナビゲーション装置や、ドライブレコーダー装置、レーザー探知機等の車両用電気機器を設ける際に、車両用電気機器に車両電源（バテリー）の電力を供給するための車両用電源ソケットであって、図１乃至図３に示すように、車両用電気機器のプラグ３が抜き差し可能なプラグ差込孔10を有すると共に開口部１ａの外周壁部の外周面に雄ネジ部11を有する有底円筒状のソケット本体１と、ソケット本体１の雄ネジ部11に螺着可能な雌ネジ部21を有する筒状のナット部材２と、を備えている。 Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
Vehicle for supplying electric power from a vehicle power source (battery) to an electric device for a vehicle when a vehicle such as a portable navigation device, a drive recorder device, or a laser detector is provided in an automobile or a vehicle such as a large scooter. As shown in FIGS. 1 to 3, the power socket for the vehicle has a plug insertion hole 10 into which the plug 3 of the vehicle electrical device can be inserted and removed, and a male screw portion on the outer peripheral surface of the outer peripheral wall portion of the opening 1a. And a cylindrical nut member 2 having a female screw portion 21 that can be screwed to the male screw portion 11 of the socket main body 1.

ソケット本体１は、雄ネジ部11が形成されている外周壁部の開口端縁１ｂからプラグ差込孔10の軸心方向Ｎに沿って切り欠いた複数の縮径用の切欠部12を有している。切欠部12は、プラグ差込孔10の軸心Ｌ廻りに等間隔に４つ（９０度毎に）設けている。４つの切欠部12によって、開口部１ａの外周壁部を、開口端縁１ｂ側が揺動可能な横断面円弧状の４つの弾性舌片壁部13に分割形成している。雄ネジ部11は、自由状態でストレートネジとなるように形成している。なお、図３と図５は、軸心Ｌ方向からみて（正面視）１２０度で折れ曲がった切断面の切り口を示している。   The socket body 1 has a plurality of notch portions 12 for reducing the diameter, which are notched along the axial direction N of the plug insertion hole 10 from the opening edge 1b of the outer peripheral wall portion where the male screw portion 11 is formed. doing. Four notches 12 are provided at equal intervals around the axis L of the plug insertion hole 10 (every 90 degrees). The four notches 12 divide the outer peripheral wall portion of the opening 1a into four elastic tongue wall portions 13 each having an arcuate cross section that can swing on the opening edge 1b side. The male screw portion 11 is formed to be a straight screw in a free state. 3 and 5 show a cut surface of the cut surface that is bent at 120 degrees when viewed from the direction of the axis L (front view).

また、ソケット本体１は、図示省略するが、プラグ差込孔10の内周面にマイナス（車両アース）側と電気的に接続される金属製のソケット陰極端子部材を設けている。また、プラグ差込孔10の底部（奥部）に車両電源のプラス側と電気的に接続される金属製のソケット陽極端子部材を設けている。
また、ソケット本体１は、絶縁性樹脂製の有底円筒状のケース部材を有し、ケース部材に、プラグ差込孔10と雄ネジ部11と切欠部12を形成し、ケース部材の内部に、ソケット陰極端子部材とソケット陽極端子部材と電気配線部材を設けている。また、マイナス（車両アース）側と電気的接続するための陰極（アース）接続電気コードと、車両電源プラス側と電気的に接続するための陽極接続電気コードと、を備えている。 Although not shown, the socket body 1 is provided with a metal socket cathode terminal member electrically connected to the negative (vehicle ground) side on the inner peripheral surface of the plug insertion hole 10. Further, a metal socket anode terminal member that is electrically connected to the positive side of the vehicle power supply is provided at the bottom (back) of the plug insertion hole 10.
The socket body 1 has a bottomed cylindrical case member made of an insulating resin. The case member is formed with a plug insertion hole 10, a male screw portion 11, and a notch portion 12, and is formed inside the case member. The socket cathode terminal member, the socket anode terminal member, and the electric wiring member are provided. Also, a cathode (ground) connection electric cord for electrical connection with the negative (vehicle ground) side and an anode connection electric cord for electrical connection with the vehicle power supply positive side are provided.

ナット部材２は、絶縁性樹脂製の円筒形状であって、内周面側に、ソケット本体１の雄ネジ部11に螺着可能なテーパ状の雌ネジ部21を有している。
雌ネジ部21は、螺着開始側から螺着終了側に向かって縮径するテーパネジに形成している。 The nut member 2 has a cylindrical shape made of an insulating resin, and has a tapered female screw portion 21 that can be screwed to the male screw portion 11 of the socket body 1 on the inner peripheral surface side.
The female screw portion 21 is formed as a taper screw having a diameter reduced from the screwing start side to the screwing end side.

ここで、プラグ３は、ソケット本体１のプラグ差込孔10に挿入される絶縁性樹脂製の中空状の差込軸部30と、車両用電気機器のプラス側と電気的に接続され差込軸部30の先端面30ａから（差込軸部30の軸心方向に）突出する導電性金属製のプラグ陽極端子31と、車両用電気機器のマイナス側と電気的に接続され差込軸部30の外周面30ｂからラジアル外方に突出する導電性金属製のプラグ陰極端子32と、を有している。
プラグ陽極端子31は、差込軸部30の軸心方向に移動自在（差込軸部30に対して出没自在）であって、突出方向に弾発付勢されている。また、プラグ陰極端子32は、差込軸部30に対してラジアル方向に移動自在（出没自在）であって、ラジアル外方へ弾発付勢されている。 Here, the plug 3 is electrically connected and inserted into a hollow insertion shaft portion 30 made of an insulating resin to be inserted into the plug insertion hole 10 of the socket body 1 and the plus side of the vehicle electrical device. Plug anode terminal 31 made of conductive metal protruding from the tip surface 30a of the shaft portion 30 (in the axial center direction of the insertion shaft portion 30), and the insertion shaft portion electrically connected to the negative side of the vehicle electrical device And a plug cathode terminal 32 made of a conductive metal projecting radially outward from an outer peripheral surface 30b of 30.
The plug anode terminal 31 is movable in the axial direction of the insertion shaft portion 30 (can be moved in and out with respect to the insertion shaft portion 30), and is elastically biased in the protruding direction. Further, the plug cathode terminal 32 is movable in the radial direction with respect to the plug-in shaft portion 30 (can be moved in and out), and is elastically biased outward in the radial direction.

そして、図２及び図３に示すように、ソケット本体１にナット部材２が螺合し、かつ、ソケット本体１の開口端面よりもナット部材２の小径側端面（螺着終了側端面）が突出して所定離間寸法Ｓだけ離間している待機状態（抜き差し可能状態と呼ぶ場合もある）で、ソケット本体１の開口部１ａの開口端縁部内径寸法Ｄが、プラグ３の（プラグ陰極端子32よりも挿入方向基端側の）差込軸部直径寸法ｄよりも大きくなるように、ソケット本体１の雄ネジ部11と開口部１ａ、及び、ナット部材２の雌ネジ部21の径寸法を構成している。   As shown in FIGS. 2 and 3, the nut member 2 is screwed into the socket body 1, and the small-diameter side end face (screwing end side end face) of the nut member 2 protrudes from the opening end face of the socket body 1. In the stand-by state (which may be referred to as “insertable / removable state”) separated by a predetermined separation dimension S, the inner diameter dimension D of the opening edge of the opening 1a of the socket body 1 is larger than the plug 3 (from the plug cathode terminal 32). The diameter dimension of the male thread part 11 and the opening part 1a of the socket body 1 and the female thread part 21 of the nut member 2 is configured to be larger than the diameter dimension d of the insertion shaft part (on the proximal side in the insertion direction). doing.

図２に於て、待機状態から、プラグ３を挿入せずにナット部材２を螺進させると、図示省略するが、ナット部材２のテーパネジ作用によって（雄ネジ部11に雌ネジ部21の小径部位が対応して）、開口部１ａの外周壁部が縮径方向（ラジアル内方）の力を受け、開口部１ａの開口端縁１ｂ側が縮径して（言い換えると、弾性舌片壁部13が弾性変形して、弾性舌片壁部13の先端側が、ラジアル内方へ揺動して）、開口端縁部内径寸法Ｄが、差込軸部直径寸法ｄよりも小さくなるように構成している。   In FIG. 2, when the nut member 2 is screwed from the standby state without inserting the plug 3, although not shown, due to the taper screw action of the nut member 2 (the male screw portion 11 has a small diameter of the female screw portion 21. Corresponding to the region), the outer peripheral wall portion of the opening portion 1a receives a force in the diameter reducing direction (radially inward), and the opening edge 1b side of the opening portion 1a is reduced in diameter (in other words, the elastic tongue piece wall portion) 13 is elastically deformed, and the tip end side of the elastic tongue piece wall portion 13 swings radially inward), so that the opening edge portion inner diameter dimension D is smaller than the insertion shaft section diameter dimension d. doing.

つまり、図３に示すように、待機状態のソケット本体１にプラグ３を差し込んだ後に、図４に示すように、ナット部材２を螺進させると、図５に示すように、開口部１ａの開口端縁部内周面１ｅがプラグ３の差込軸部30の（プラグ陰極端子32よりも挿入方向基端側の）外周面30ｂに圧接するように構成している。   That is, as shown in FIG. 3, after inserting the plug 3 into the socket body 1 in the standby state, as shown in FIG. 4, when the nut member 2 is screwed, as shown in FIG. The opening edge inner peripheral surface 1e is configured to be in pressure contact with the outer peripheral surface 30b of the plug shaft 30 of the plug 3 (on the base end side in the insertion direction with respect to the plug cathode terminal 32).

次に、上述した本考案の車両用電源ソケットの作用について説明する。
図２の待機状態から、図３に示すように、ソケット本体１のプラグ差込孔10に、プラグ３の差込軸部30を、プラグ陽極端子31が図示省略のソケット陽極端子部材に接触するまで差し込む（差込完了状態にする）。ソケット本体１の開口端縁部内径寸法Ｄが、差込軸部直径寸法ｄよりも大きく、容易かつスムーズに差し込まれる。
そして、プラグ差込孔10内で、プラグ陽極端子31が図示省略のプラス端子部材に接触すると共に、プラグ陰極端子32が図示省略のソケット陰極端子部材に接触することで、車両用電気機器が車両用電源に電気的に接続され、電力が供給可能となる。 Next, the operation of the above-described vehicle power socket of the present invention will be described.
From the standby state of FIG. 2, as shown in FIG. 3, the plug shaft portion 30 of the plug 3 is brought into contact with the plug insertion hole 10 of the socket body 1, and the plug anode terminal 31 is in contact with a socket anode terminal member not shown. Until the plug is inserted. The inner diameter dimension D of the opening edge of the socket body 1 is larger than the diameter dimension d of the insertion shaft part, and can be inserted easily and smoothly.
Then, in the plug insertion hole 10, the plug anode terminal 31 comes into contact with a positive terminal member (not shown) and the plug cathode terminal 32 comes into contact with a socket cathode terminal member (not shown). It is electrically connected to the power source for power supply and can supply power.

さらに、図３の差込完了状態から、ナット部材２を螺進させると、図４及び図５に示すように、ナット部材２のテーパネジ作用によって、開口部１ａの外周壁部が縮径方向（ラジアル内方）の力を受け、弾性舌片壁部13が弾性変形して、弾性舌片壁部13の先端側（開口端縁１ｂ側）がラジアル内方へ揺動し、切欠部12の開口端縁側切欠幅寸法が狭くなって、開口部１ａが縮径する。   Further, when the nut member 2 is screwed from the insertion completion state of FIG. 3, the outer peripheral wall portion of the opening 1 a is reduced in the diameter reducing direction (by the taper screw action of the nut member 2, as shown in FIGS. 4 and 5. The elastic tongue piece wall portion 13 is elastically deformed by receiving the force of the radial inner side, and the distal end side (opening edge 1b side) of the elastic tongue piece wall portion 13 swings radially inwardly. The opening edge side notch width dimension becomes narrow, and the opening 1a is reduced in diameter.

ソケット本体１の開口端縁部が縮径することで、開口端縁部内周面１ｅがプラグ３の差込軸部30の外周面30ｂに圧接してラジアル内方の掴持力（チャッキング力）や、圧接による摩擦力を発揮する。
掴持力（挟持力）や摩擦力によって、車両の振動によるプラグ３の抜け（脱落）或いは、プラグ陽極端子31がソケット陽極端子から離間するような電気的接触不良を防止する。 By reducing the diameter of the opening edge of the socket body 1, the inner circumferential surface 1 e of the opening edge is pressed against the outer circumferential surface 30 b of the plug shaft 30 of the plug 3, so that the radial inner gripping force (chucking force) ) And frictional force due to pressure contact.
The gripping force (clamping force) or frictional force prevents disconnection (dropping) of the plug 3 due to vibration of the vehicle or electrical contact failure such that the plug anode terminal 31 is separated from the socket anode terminal.

また、車両用電気機器の移設や修理等の理由により、図４及び図５の抜け止め状態から、プラグ３を抜く場合は（抜け止め解除操作は）、ナット部材２を螺退させると、（雄ネジ部11に雌ネジ部21の大径部位が対応し）ソケット本体１の開口部１ａの外周壁部（弾性舌片壁部13）の弾性的復元力によって、開口端縁部内径寸法Ｄが差込軸部直径寸法ｄよりも大きい寸法に復元して、手で容易に引き抜くことができる。   Further, when the plug 3 is removed from the retaining state shown in FIGS. 4 and 5 due to the relocation or repair of the electrical equipment for the vehicle (the retaining release operation), when the nut member 2 is screwed ( Due to the elastic restoring force of the outer peripheral wall part (elastic tongue piece wall part 13) of the opening part 1a of the socket body 1, the opening edge part inner diameter dimension D corresponds to the male screw part 11 and the large diameter part of the female screw part 21. Is restored to a size larger than the insertion shaft diameter diameter d, and can be easily pulled out by hand.

また、ソケット本体１からナット部材２を分離させなくても、図３に示すように、所定離間寸法Ｓをもって、ナット部材２が螺着している状態で、開口端縁部内径寸法Ｄが差込軸部直径寸法ｄよりも大きいため、プラグ３を抜き差しできる。つまり、ナット部材２を常にソケット本体１に螺着させておくことができ、ナット部材２の紛失を防止できると共に、迅速に抜け止め操作及び抜け止め解除操作を行うことができる。   Further, even if the nut member 2 is not separated from the socket body 1, as shown in FIG. 3, the opening edge portion inner diameter dimension D is different in a state where the nut member 2 is screwed with a predetermined separation dimension S. Since it is larger than the diameter d of the insertion shaft portion, the plug 3 can be inserted and removed. That is, the nut member 2 can always be screwed to the socket body 1, and the nut member 2 can be prevented from being lost, and the retaining operation and the retaining release operation can be performed quickly.

なお、本考案は設計変更可能であって、ソケット本体１のケース部材は、図示の有底円筒形状に限らず、角筒形状や、箱形状等自由である。ナット部材２は、テーパ状の雌ネジ部21を有していれば、図示の円筒形状に限らず、外形が六角形状（六角ナット型）や八角形状等の多角形状や矩形状（角ナット型）等自由である。切欠部12の数は自由であって、１つ乃至３つ、又は４つ以上でも良い。   The design of the present invention can be changed, and the case member of the socket body 1 is not limited to the bottomed cylindrical shape shown in the figure, and may be a rectangular tube shape, a box shape, or the like. The nut member 2 is not limited to the illustrated cylindrical shape as long as it has a tapered female screw portion 21, and the outer shape is a polygonal shape such as a hexagonal shape (hexagonal nut shape) or an octagonal shape, or a rectangular shape (square nut shape). ) And so on. The number of the notches 12 is arbitrary, and may be 1 to 3, or 4 or more.

以上のように、本考案の車両用電源ソケットは、車両用電気機器のプラグ３が差し込まれるプラグ差込孔10を有すると共に、プラグ３に電気的に接続して車両用電気機器に車両電源の電力を供給するための車両用電源ソケットに於て、プラグ３が差し込まれる開口部１ａの外周壁部の外周面に雄ネジ部11を有すると共に開口端縁１ｂからプラグ差込孔10の軸心方向Ｎに沿った縮径用の切欠部12を有するソケット本体１と、ソケット本体１の雄ネジ部11に螺着して開口部１ａを縮径させるためのテーパ状の雌ネジ部21を有する筒状のナット部材２と、を備えたので、車両用電気機器のプラグ３を、容易かつスムーズに差込可能としながらも、車両の振動による抜けや電気的接触不良を確実に防止できる。部品点数の少ない簡素な構造で容易に製造できる。抜け止め操作及び抜け止め解除操作を容易かつ迅速に行うことができる。   As described above, the vehicle power socket according to the present invention has the plug insertion hole 10 into which the plug 3 of the vehicle electrical device is inserted, and is electrically connected to the plug 3 to supply the vehicle power to the vehicle electrical device. In a vehicle power socket for supplying electric power, a male screw portion 11 is provided on an outer peripheral surface of an outer peripheral wall portion of an opening portion 1a into which a plug 3 is inserted, and an axial center of a plug insertion hole 10 from an opening end edge 1b. A socket main body 1 having a notch 12 for reducing the diameter along the direction N, and a tapered female screw 21 for screwing the male screw 11 of the socket main body 1 to reduce the diameter of the opening 1a. Since the tubular nut member 2 is provided, the plug 3 of the vehicle electrical device can be easily and smoothly inserted, and the disconnection due to the vibration of the vehicle and the electrical contact failure can be reliably prevented. It can be easily manufactured with a simple structure with a small number of parts. The retaining operation and the retaining release operation can be performed easily and quickly.

１ ソケット本体
１ａ 開口部
１ｂ 開口端縁
２ ナット部材
３ プラグ
10 プラグ差込孔
11 雄ネジ部
12 切欠部
21 雌ネジ部
Ｎ 軸心方向 DESCRIPTION OF SYMBOLS 1 Socket main body 1a Opening part 1b Opening edge 2 Nut member 3 Plug
10 Plug insertion hole
11 Male thread
12 Notch
21 Female thread N N Axial direction

Claims (1)

車両用電気機器のプラグ（３）が差し込まれるプラグ差込孔（10）を有すると共に、該プラグ（３）に電気的に接続して上記車両用電気機器に車両電源の電力を供給するための車両用電源ソケットに於て、
上記プラグ（３）が差し込まれる開口部（１ａ）の外周壁部の外周面に雄ネジ部（11）を有すると共に開口端縁（１ｂ）から上記プラグ差込孔（10）の軸心方向（Ｎ）に沿った縮径用の切欠部（12）を有するソケット本体（１）と、上記ソケット本体（１）の上記雄ネジ部（11）に螺着して上記開口部（１ａ）を縮径させるためのテーパ状の雌ネジ部（21）を有する筒状のナット部材（２）と、を備えたことを特徴とする車両用電源ソケット。 A plug insertion hole (10) into which the plug (3) of the vehicle electric device is inserted and electrically connected to the plug (3) to supply electric power of the vehicle power source to the vehicle electric device. In the vehicle power socket,
An external thread portion (11) is provided on the outer peripheral surface of the outer peripheral wall portion of the opening (1a) into which the plug (3) is inserted, and the axial direction of the plug insertion hole (10) from the opening edge (1b) ( N) and a socket body (1) having a notch (12) for reducing the diameter, and the male threaded portion (11) of the socket body (1) to be screwed into the opening (1a). A vehicular power socket, comprising: a cylindrical nut member (2) having a tapered female screw portion (21) for diameter.

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