JP2020197449A - Sensor - Google Patents

Sensor Download PDF

Info

Publication number
JP2020197449A
JP2020197449A JP2019103740A JP2019103740A JP2020197449A JP 2020197449 A JP2020197449 A JP 2020197449A JP 2019103740 A JP2019103740 A JP 2019103740A JP 2019103740 A JP2019103740 A JP 2019103740A JP 2020197449 A JP2020197449 A JP 2020197449A
Authority
JP
Japan
Prior art keywords
electric wire
electrode
holding portion
wire insertion
electrode holding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2019103740A
Other languages
Japanese (ja)
Other versions
JP7250623B2 (en
Inventor
真 笠井
Makoto Kasai
真 笠井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hioki EE Corp
Original Assignee
Hioki EE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hioki EE Corp filed Critical Hioki EE Corp
Priority to JP2019103740A priority Critical patent/JP7250623B2/en
Publication of JP2020197449A publication Critical patent/JP2020197449A/en
Application granted granted Critical
Publication of JP7250623B2 publication Critical patent/JP7250623B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

To avoid an unintended separation of an electrode holding part and an electric wire insertion part.SOLUTION: A holding part 3 is moved relatively with respect to an insertion part 4 along a tube length direction of the electric wire insertion part 4 and the electrode holding part 3, an electrode 2 is configured so as to be movable in an approach direction and a separation direction for causing the electrode 2 held by the holding part 3 to approach and separate from a coated cable X inserted into a notch 32a of the insertion part 4, and an amount to be detected about the coated cable X is configured so as to be detectable in a state of non-contact with a conductor wire through the electrode 2 undergoing capacity coupling to the conductor wire. A stopper 5 is provided, which is provided between the holding part 3 and the insertion part 4 and fixed to the insertion part 4 while enabling relative movement to a tube length direction to the holding part 3, and comes into contact with a projection part 11c of the holding part 3 to regulate relative movement of the insertion part 4 with respect to the holding part 3 in the separation direction when the insertion part 4 is relatively moved up to a position regulated in advance with respect to the holding part 3 in the separation direction.SELECTED DRAWING: Figure 7

Description

本発明は、被覆電線についての被検出量を被覆電線の導線に非接触の状態で検出可能なセンサに関するものである。 The present invention relates to a sensor capable of detecting an amount to be detected for a covered electric wire in a state of being non-contact with a lead wire of the coated electric wire.

この種のセンサとして、出願人は、被覆電線に供給されている電圧を被覆電線の芯線(導線)に対して非接触の状態で検出可能な電圧センサを下記の先行出願において開示している。 As a sensor of this type, the applicant discloses a voltage sensor in the following prior application that can detect the voltage supplied to the coated electric wire in a non-contact state with respect to the core wire (lead wire) of the coated electric wire.

この電圧センサは、電圧の検出時に被覆電線の絶縁被覆を介して芯線と容量結合させられる電極を有する電極部と、電極部を挿入可能な円筒状に形成されて電極部と一体化されたねじ部(以下、電極部における電極以外の構成要素およびねじ部で構成された要素を「電極保持部」ともいう)と、電極保持部を嵌入可能な円筒状に形成されると共に被覆電線を挿入可能な挿入部(以下、「切欠き」ともいう)が設けられた支持部(以下、「電線挿入部」ともいう)と、電極保持部に対する電線挿入部の相対的な回動を規制するロックナットとを備えている。この場合、この電圧センサでは、電極保持部の外周面に雄ネジが形成されると共に、電線挿入部の内周面に電極保持部の雄ネジを螺合可能な雌ネジが形成されている。 This voltage sensor has an electrode portion having an electrode that is capacitively coupled to the core wire via an insulating coating of a coated electric wire when a voltage is detected, and a screw formed in a cylindrical shape into which the electrode portion can be inserted and integrated with the electrode portion. A part (hereinafter, a component other than the electrode and an element composed of a threaded part in the electrode part is also referred to as an "electrode holding part") and an electrode holding part are formed in a cylindrical shape into which the electrode holding part can be inserted, and a coated electric wire can be inserted. A lock nut that regulates the relative rotation of the support portion (hereinafter, also referred to as "wire insertion portion") provided with the insertion portion (hereinafter, also referred to as "notch") and the wire insertion portion with respect to the electrode holding portion. And have. In this case, in this voltage sensor, a male screw is formed on the outer peripheral surface of the electrode holding portion, and a female screw capable of screwing the male screw of the electrode holding portion is formed on the inner peripheral surface of the electric wire insertion portion.

この電圧センサを使用した電圧の検出に際しては、被覆電線に電圧センサを装着する。具体的には、電線挿入部の切欠きに被覆電線を挿入した後に、雄ネジにロックナットを螺合させた電極保持部を電線挿入部の基端部側から電線挿入部内にねじ込む。この際には、電線挿入部に対する電極保持部の回動(ねじ込み)に伴い、電極保持部によって保持されている電極が電極保持部と共に電線挿入部の先端部側に向けて移動させられる。これにより、電線挿入部(切欠き)に挿入されている被覆電線の絶縁被覆に電極の先端面が当接させられる。また、雌ネジに対して雄ネジがさらにねじ込まれて電極保持部が電線挿入部の先端部側に向かってさらに移動させられたときには、被覆電線(絶縁被覆)に対して電極の先端面が押し付けられる。これにより、電線挿入部における切欠きの縁部と電極の先端面との間に被覆電線が挟み込まれた状態となる。 When detecting a voltage using this voltage sensor, a voltage sensor is attached to the covered electric wire. Specifically, after inserting the covered electric wire into the notch of the electric wire insertion portion, the electrode holding portion in which the lock nut is screwed into the male screw is screwed into the electric wire insertion portion from the base end side of the electric wire insertion portion. At this time, as the electrode holding portion rotates (screws) with respect to the electric wire inserting portion, the electrode held by the electrode holding portion is moved together with the electrode holding portion toward the tip end side of the electric wire inserting portion. As a result, the tip surface of the electrode is brought into contact with the insulating coating of the coated electric wire inserted in the electric wire insertion portion (notch). Further, when the male screw is further screwed into the female screw and the electrode holding portion is further moved toward the tip end side of the wire insertion portion, the tip surface of the electrode is pressed against the coated wire (insulation coating). Be done. As a result, the covered electric wire is sandwiched between the edge of the notch in the electric wire insertion portion and the tip surface of the electrode.

次いで、電極保持部(雄ネジ)に対してロックナットを回動させて電線挿入部の基端部にロックナットを押し付けることにより、電線挿入部に対する電極保持部の相対的な回動(緩み)を規制する。以上により、被覆電線への電圧センサの装着が完了する。続いて、電圧センサの基端部に配設されているコネクタに接続ケーブルを接続することによって電圧センサを測定装置に接続する。この後、測定装置の操作部を操作して測定処理を実行させることにより、電圧センサを介して被覆電線の電圧が検出されて電圧値が測定される。 Next, by rotating the lock nut with respect to the electrode holding portion (male screw) and pressing the lock nut against the base end portion of the wire insertion portion, the relative rotation (looseness) of the electrode holding portion with respect to the wire insertion portion is performed. To regulate. This completes the mounting of the voltage sensor on the covered wire. Subsequently, the voltage sensor is connected to the measuring device by connecting the connection cable to the connector provided at the base end portion of the voltage sensor. After that, by operating the operation unit of the measuring device to execute the measurement process, the voltage of the covered electric wire is detected through the voltage sensor and the voltage value is measured.

一方、電圧の検出が完了したときには、被覆電線から電圧センサを取り外す。具体的には、まず、電圧センサから接続ケーブルを取り外す。次いで、電極保持部(雄ネジ)に対して装着時とは逆向きにロックナットを回動させて電線挿入部の基端部からロックナットを離間させることにより、電線挿入部に対する電極保持部の回動規制を解除する。続いて、電線挿入部に対して装着時とは逆向きに電極保持部を回動させる。この際には、電線挿入部に対する電極保持部の回動に伴い、電極保持部によって保持されている電極が電極保持部と共に電線挿入部の基端部側に向けて移動させられ、電線挿入部に挿入させられている被覆電線から電極の先端面が離間した状態となる。この後、電線挿入部の切欠きから被覆電線を離脱させることにより、取外し作業が完了する。 On the other hand, when the voltage detection is completed, the voltage sensor is removed from the covered wire. Specifically, first, the connection cable is removed from the voltage sensor. Next, by rotating the lock nut with respect to the electrode holding portion (male screw) in the direction opposite to that at the time of mounting to separate the lock nut from the base end portion of the electric wire insertion portion, the electrode holding portion with respect to the electric wire insertion portion Release the rotation regulation. Subsequently, the electrode holding portion is rotated with respect to the electric wire insertion portion in the direction opposite to that at the time of mounting. At this time, as the electrode holding portion rotates with respect to the electric wire inserting portion, the electrode held by the electrode holding portion is moved together with the electrode holding portion toward the base end portion side of the electric wire inserting portion, and the electric wire inserting portion The tip surface of the electrode is separated from the covered electric wire inserted in. After that, the removal work is completed by separating the covered electric wire from the notch of the electric wire insertion portion.

特開2018−204963号公報(第7−16頁、第1−14図)JP-A-2018-204963 (pages 7-16, 1-14)

ところが、出願人が開示している電圧センサには、以下のような改善すべき課題が存在する。具体的には、出願人が開示している電圧センサでは、電線挿入部に対して電極保持部をねじ込むことによって被覆電線に対して電極を押し付けると共に、電線挿入部に対して電極保持部を逆向きに回動させることによって被覆電線から電極を離間させる構成が採用されている。この場合、この電圧センサでは、電線挿入部に設けられた雌ネジと電極保持部に設けられた雄ネジとの螺合によって電線挿入部と電極保持部とが一体化した状態が維持される構成が採用されている。 However, the voltage sensor disclosed by the applicant has the following problems to be improved. Specifically, in the voltage sensor disclosed by the applicant, the electrode is pressed against the covered electric wire by screwing the electrode holding portion into the electric wire insertion portion, and the electrode holding portion is reversed against the electric wire insertion portion. A configuration is adopted in which the electrode is separated from the covered electric wire by rotating it in a direction. In this case, in this voltage sensor, the wire insertion portion and the electrode holding portion are maintained in an integrated state by screwing the female screw provided in the electric wire insertion portion and the male screw provided in the electrode holding portion. Has been adopted.

したがって、この電圧センサでは、電線挿入部に対して電極保持部をねじ込んだ時とは逆向きに回動させて電線挿入部の雌ネジに対する電極保持部の雄ネジの螺合を解除することで電線挿入部と電極保持部とが分離した状態となる。この場合、電線挿入部に対して電極保持部をどの程度回動させたときに雌ネジに対する雄ネジの螺合が解除されるかを正確に把握するのは困難となっている。したがって、例えば被覆電線に対する着脱作業時に電線挿入部に対して電極保持部を回動させ過ぎて電線挿入部と電極保持部とが作業者の意に反して分離したときに、電線挿入部、または電極保持部を落下させてしまうおそれがある。このため、この点を改善するのが好ましい。 Therefore, in this voltage sensor, the male screw of the electrode holding portion is unscrewed with respect to the female screw of the electric wire insertion portion by rotating the electrode holding portion in the direction opposite to that when the electrode holding portion is screwed into the electric wire insertion portion. The wire insertion part and the electrode holding part are separated from each other. In this case, it is difficult to accurately grasp how much the electrode holding portion is rotated with respect to the electric wire insertion portion to release the male screw from the female screw. Therefore, for example, when the electrode holding portion is rotated too much with respect to the electric wire insertion portion during the attachment / detachment work to the covered electric wire and the electric wire insertion portion and the electrode holding portion are separated against the intention of the operator, the electric wire insertion portion or The electrode holding portion may be dropped. Therefore, it is preferable to improve this point.

本発明は、かかる改善すべき課題に鑑みてなされたものであり、電極保持部および電線挿入部の意図しない分離を回避し得るセンサを提供することを主目的とする。 The present invention has been made in view of the problem to be improved, and an object of the present invention is to provide a sensor capable of avoiding an unintended separation of an electrode holding portion and an electric wire insertion portion.

上記目的を達成すべく請求項1記載のセンサは、筒状に形成された電極保持部と、前記電極保持部に挿入された状態で当該電極保持部によって保持されると共に被覆電線の導線に対して当該被覆電線の絶縁被覆を介して近接させられて当該導線と容量結合させられる電極と、前記電極を保持した状態の前記電極保持部を挿入可能な筒状に形成されると共に周壁の一部が切り欠かれた切欠きに前記被覆電線を挿入可能に構成された電線挿入部とを備え、前記電線挿入部に対する前記電極保持部の相対的な移動によって当該電線挿入部および当該電極保持部の筒長方向に沿って当該電線挿入部に対して当該電極保持部が相対的に移動させられて、当該電線挿入部に挿入された前記被覆電線に対して当該電極保持部によって保持された前記電極を接近させる接近方向、および当該被覆電線から当該電極を離間させる離間方向に当該電極を移動可能に構成されると共に、前記導線に対して容量結合させられた前記電極を介して前記被覆電線についての被検出量を当該導線に対して非接触の状態で検出可能に構成されたセンサであって、前記電極保持部および前記電線挿入部の間に配設されて当該電極保持部に対する前記筒長方向への相対的な移動が可能な状態で当該電線挿入部に固定されると共に、当該電極保持部に対して当該電線挿入部が予め規定された位置まで前記離間方向へ相対的に移動させられたときに当該電極保持部の周面に設けられている移動規制用凸部に当接して当該電極保持部に対する当該電線挿入部の当該離間方向への相対的な移動を規制する移動規制用部材を備えている。 In order to achieve the above object, the sensor according to claim 1 is held by the electrode holding portion formed in a tubular shape and the electrode holding portion in a state of being inserted into the electrode holding portion, and with respect to the lead wire of the coated electric wire. An electrode that is brought close to the coated wire via an insulating coating and is capacitively coupled to the lead wire, and an electrode holding portion that holds the electrode are formed into a tubular shape that can be inserted and a part of the peripheral wall. The notch is provided with an electric wire insertion portion configured so that the coated electric wire can be inserted into the notch, and the electric wire insertion portion and the electrode holding portion are provided by the relative movement of the electrode holding portion with respect to the electric wire insertion portion. The electrode holding portion is moved relative to the electric wire insertion portion along the cylinder length direction, and the electrode held by the electrode holding portion with respect to the coated electric wire inserted into the electric wire insertion portion. The electrode is configured to be movable in the approaching direction in which the electrode is approached and in the separation direction in which the electrode is separated from the coated wire, and the coated wire is provided through the electrode capacitively coupled to the lead wire. A sensor configured to be able to detect the amount to be detected in a state of non-contact with the lead wire, and is arranged between the electrode holding portion and the wire insertion portion in the cylinder length direction with respect to the electrode holding portion. The wire insertion portion was fixed to the wire insertion portion so as to be relatively movable to the electrode holding portion, and the wire insertion portion was moved relative to the electrode holding portion to a predetermined position in the separation direction. Sometimes, a movement restricting member that comes into contact with a movement restricting convex portion provided on the peripheral surface of the electrode holding portion and regulates the relative movement of the electric wire insertion portion with respect to the electrode holding portion in the separation direction is provided. I have.

請求項2記載のセンサは、請求項1記載のセンサにおいて、前記移動規制用部材は、環状に形成されると共に前記電線挿入部内に圧入されて当該電線挿入部に固定されている。 The sensor according to claim 2 is the sensor according to claim 1, wherein the movement restricting member is formed in an annular shape and is press-fitted into the electric wire insertion portion and fixed to the electric wire insertion portion.

請求項3記載のセンサは、請求項2記載のセンサにおいて、前記電極保持部は、前記移動規制用凸部が1つだけ設けられ、前記移動規制用部材は、C字状に形成されると共に、当該移動規制用部材の周方向における一端部と他端部との間の隙間における当該周方向の長さが、前記電線挿入部に圧入されていない状態において前記電極保持部の周方向に沿った前記移動規制用凸部の長さ以上となり、かつ当該電線挿入部に圧入された状態において当該電極保持部の周方向に沿った当該移動規制用凸部の長さを下回るように弾性変形可能に構成されている。 The sensor according to claim 3 is the sensor according to claim 2, wherein the electrode holding portion is provided with only one convex portion for movement regulation, and the movement regulation member is formed in a C shape. , The length of the circumferential direction in the gap between one end and the other end of the movement restricting member in the circumferential direction is along the circumferential direction of the electrode holding portion in a state where the wire insertion portion is not press-fitted. It is elastically deformable so as to be longer than the length of the convex portion for movement regulation and less than the length of the convex portion for movement regulation along the circumferential direction of the electrode holding portion in a state of being press-fitted into the electric wire insertion portion. It is configured in.

請求項4記載のセンサは、請求項1から3のいずれかに記載のセンサにおいて、前記電線挿入部は、前記筒長方向の一端部が前記電極保持部および前記移動規制用部材を挿入可能に開口され、かつ当該筒長方向の他端部が閉塞されると共に、当該電線挿入部の内面において前記電極保持部によって保持された前記電極の先端面と対向させられる対向面が当該電線挿入部の筒径方向において前記切欠きにおける前記他端部の側の内縁部の一部と一直線状に連続するように形成された電線接触部が設けられている。 The sensor according to claim 4 is the sensor according to any one of claims 1 to 3, wherein one end of the electric wire insertion portion can insert the electrode holding portion and the movement restricting member at one end in the cylinder length direction. The other end of the wire insertion portion is opened and the other end in the cylinder length direction is closed, and the facing surface of the wire insertion portion that faces the tip surface of the electrode held by the electrode holding portion is the inner surface of the wire insertion portion. An electric wire contact portion formed so as to be continuous with a part of the inner edge portion on the other end side of the notch in the tubular radial direction is provided.

請求項5記載のセンサは、請求項4記載のセンサにおいて、前記電線挿入部は、前記切欠きにおける前記他端部の側の当該電線挿入部の周方向に沿った開口幅が前記一端部から前記他端部に向かうほど狭くなるように当該切欠きにおける当該他端部の側が円弧状に形成されると共に、当該切欠きの前記内縁部における前記他端部の側の頂部に前記電線接触部が設けられている。 The sensor according to claim 5 is the sensor according to claim 4, wherein the electric wire insertion portion has an opening width along the circumferential direction of the electric wire insertion portion on the other end side of the notch from the one end portion. The side of the other end of the notch is formed in an arc shape so as to become narrower toward the other end, and the electric wire contact portion is formed on the top of the inner edge of the notch on the other end side. Is provided.

請求項1記載のセンサでは、電極保持部および電線挿入部の間に配設されて電極保持部に対する筒長方向への相対的な移動が可能な状態で電線挿入部に固定されると共に、電極保持部に対して電線挿入部が予め規定された位置まで離間方向へ相対的に移動させられたときに電極保持部の周面に設けられている移動規制用凸部に当接して電極保持部に対する電線挿入部の離間方向への相対的な移動を規制する移動規制用部材を備えている。 In the sensor according to claim 1, the sensor is arranged between the electrode holding portion and the electric wire inserting portion, and is fixed to the electric wire inserting portion in a state where it can move relative to the electrode holding portion in the cylinder length direction, and also has an electrode. When the wire insertion portion is moved relative to the holding portion in the distance direction to a predetermined position, the electrode holding portion comes into contact with the movement-regulating convex portion provided on the peripheral surface of the electrode holding portion. It is provided with a movement regulating member that regulates the relative movement of the electric wire insertion portion with respect to the wire in the separation direction.

したがって、請求項1記載のセンサによれば、電線挿入部に固定されている移動規制用部材に移動規制用凸部が当接したときに、電極保持部に対する電線挿入部のさらなる移動が規制されるため、電線挿入部に電極保持部が挿入された状態を維持させて、電極保持部および電線挿入部の意図しない分離を好適に回避することができる。これにより、電極保持部および電線挿入部の分離に起因するいずれかの落下を確実に回避することができる。 Therefore, according to the sensor according to claim 1, further movement of the electric wire insertion portion with respect to the electrode holding portion is restricted when the movement restricting convex portion abuts on the movement restricting member fixed to the electric wire insertion portion. Therefore, the state in which the electrode holding portion is inserted into the electric wire insertion portion can be maintained, and unintended separation of the electrode holding portion and the electric wire inserting portion can be preferably avoided. As a result, it is possible to reliably avoid any of the drops caused by the separation of the electrode holding portion and the electric wire insertion portion.

請求項2記載のセンサによれば、移動規制用部材を環状に形成すると共に電線挿入部内に圧入して電線挿入部に固定したことにより、接着やネジ止めなどの固定方法で固定する構成とは異なり、電線挿入部に対して移動規制用部材を容易に固定することができるため、その製造コストを十分に低減することができる。 According to the sensor according to claim 2, the movement restricting member is formed in an annular shape and is press-fitted into the electric wire insertion portion to be fixed to the electric wire insertion portion, so that the sensor is fixed by a fixing method such as adhesion or screwing. Unlike this, since the movement restricting member can be easily fixed to the electric wire insertion portion, the manufacturing cost thereof can be sufficiently reduced.

請求項3記載のセンサでは、電極保持部が、移動規制用凸部が1つだけ設けられ、移動規制用部材が、C字状に形成されると共に、移動規制用部材の周方向における一端部と他端部との間の隙間における周方向の長さが、電線挿入部に圧入されていない状態において電極保持部の周方向に沿った移動規制用凸部の長さ以上となり、かつ電線挿入部に圧入された状態において電極保持部の周方向に沿った移動規制用凸部の長さを下回るように弾性変形可能に構成されている。 In the sensor according to claim 3, the electrode holding portion is provided with only one convex portion for movement regulation, the movement regulation member is formed in a C shape, and one end portion of the movement regulation member in the circumferential direction. The length in the circumferential direction in the gap between the electrode holding portion and the other end portion is equal to or longer than the length of the convex portion for movement regulation along the circumferential direction of the electrode holding portion when the electrode holding portion is not press-fitted, and the electric wire is inserted. It is configured to be elastically deformable so as to be shorter than the length of the convex portion for movement regulation along the circumferential direction of the electrode holding portion in a state of being press-fitted into the portion.

したがって、請求項3記載のセンサによれば、組立てに際して、移動規制用部材の周方向における一端部および他端部の間の隙間を移動規制用凸部が通過するように電極保持部に対して移動規制用部材を相対的に移動させて移動規制用部材を電極保持部における移動規制用凸部よりも基端部側に位置させ、その後に、移動規制用凸部に対して電極保持部の筒長方向に移動規制用部材の隙間が存在しない状態となるように移動規制用部材を回動させた状態で、電線挿入部に電極保持部を挿入して移動規制用部材を電線挿入部内に固定することで、移動規制用部材を確実かつ容易に電線挿入部内に固定することができると共に、電極保持部に対して電線挿入部を離間方向へ相対的に移動させた際に移動規制用凸部を移動規制用部材に対して確実に当接させて電極保持部および電線挿入部の意図しない分離を確実に回避することができる。 Therefore, according to the sensor according to claim 3, when assembling, the electrode holding portion is provided with the movement restricting convex portion passing through the gap between one end portion and the other end portion in the circumferential direction of the movement regulating member. The movement restricting member is relatively moved so that the movement restricting member is positioned closer to the base end portion than the movement restricting convex portion in the electrode holding portion, and then the electrode holding portion is placed with respect to the movement restricting convex portion. With the movement control member rotated so that there is no gap in the movement control member in the cylinder length direction, the electrode holding part is inserted into the wire insertion part and the movement control member is placed inside the wire insertion part. By fixing, the movement restricting member can be securely and easily fixed in the electric wire insertion portion, and when the electric wire insertion portion is relatively moved in the separation direction with respect to the electrode holding portion, the movement restricting convex It is possible to surely bring the portion into contact with the movement restricting member to reliably avoid unintended separation of the electrode holding portion and the electric wire insertion portion.

請求項4記載のセンサでは、電線挿入部が、筒長方向の一端部が電極保持部および移動規制用部材を挿入可能に開口され、かつ筒長方向の他端部が閉塞されると共に、電線挿入部の内面において電極保持部によって保持された電極の先端面と対向させられる対向面が電線挿入部の筒径方向において切欠きにおける他端部の側の内縁部の一部と一直線状に連続するように形成されて電線接触部が設けられている。 In the sensor according to claim 4, one end of the electric wire insertion portion in the cylinder length direction is opened so that an electrode holding portion and a movement restricting member can be inserted, and the other end portion in the cylinder length direction is closed and the electric wire is closed. On the inner surface of the insertion portion, the facing surface facing the tip surface of the electrode held by the electrode holding portion is continuous with a part of the inner edge portion on the other end side of the notch in the tubular radial direction of the wire insertion portion in a straight line. It is formed so as to provide an electric wire contact portion.

したがって、請求項4記載のセンサによれば、電線挿入部における切欠きの内縁部および対向面と、電極における先端部の先端面との間に挟み込まれた被覆電線において、弾性復帰が困難な程度に絶縁被覆が変形したり、断線(導線の接断)が生じたりする事態を招くことなく、電線挿入部と電極との間に被覆電線が挟み込まれた状態とすることができるため、被覆電線を傷付けることなく確実に保持する(被覆電線に対してセンサを確実に装着する)ことができる。 Therefore, according to the sensor according to claim 4, it is difficult to recover the elasticity of the covered electric wire sandwiched between the inner edge portion and the facing surface of the notch in the electric wire insertion portion and the tip end surface of the tip portion of the electrode. Since the covered electric wire can be sandwiched between the electric wire insertion portion and the electrode without causing the insulation coating to be deformed or the wire to be broken (connecting the lead wire). Can be securely held without damaging (the sensor is securely attached to the covered wire).

請求項5記載のセンサによれば、切欠きにおける他端部の側の電線挿入部の周方向に沿った開口幅が一端部から他端部に向かうほど狭くなるように切欠きにおける他端部の側を円弧状に形成すると共に、切欠きの内縁部における他端部の側の頂部に電線接触部を設けて電線挿入部を構成したことにより、切欠き内に挿入した被覆電線を確実に電線接触部に対して接触させた状態とすることができる。 According to the sensor according to claim 5, the other end portion of the notch so that the opening width along the circumferential direction of the wire insertion portion on the other end side of the notch becomes narrower from one end to the other end. The side of the wire is formed in an arc shape, and the wire contact portion is provided at the top of the inner edge of the notch on the other end side to form the wire insertion portion, so that the covered wire inserted in the notch can be reliably inserted. It can be in contact with the electric wire contact portion.

電圧センサ1の外観斜視図である。It is an external perspective view of the voltage sensor 1. 電圧センサ1の他の外観斜視図である。It is another external perspective view of the voltage sensor 1. 電圧センサ1の分解斜視図である。It is an exploded perspective view of the voltage sensor 1. 電圧センサ1の他の分解斜視図である。It is another exploded perspective view of the voltage sensor 1. 電圧センサ1の先端部側の断面図である。It is sectional drawing of the tip side of the voltage sensor 1. 電線挿入部4における先端部側の外観斜視図である。It is an external perspective view of the tip side of the electric wire insertion part 4. 電線挿入部4の切欠き32a内に被覆電線Xを挿入した状態の電圧センサ1の断面図である。It is sectional drawing of the voltage sensor 1 in the state which the covered electric wire X is inserted in the notch 32a of the electric wire insertion part 4. 図7に示す状態から電線挿入部4に対して電極保持部3を矢印B1の向きに移動させた状態の断面図である。It is sectional drawing of the state which moved the electrode holding part 3 with respect to the electric wire insertion part 4 in the direction of arrow B1 from the state shown in FIG. 被覆電線Xに対して電極2が押し付けられ、かつ係合部E3,E4が係合させられた状態について説明するための断面図である。It is sectional drawing for demonstrating the state in which the electrode 2 is pressed against the coated electric wire X, and the engaging portions E3 and E4 are engaged. 図9に示す状態から電線挿入部4に対して電極保持部3の筒状部13を矢印B1の向きにさらに移動させた状態の断面図である。9 is a cross-sectional view of a state in which the tubular portion 13 of the electrode holding portion 3 is further moved in the direction of the arrow B1 with respect to the electric wire inserting portion 4 from the state shown in FIG. 筒状部13に対して操作用ノブ21を矢印B2の向きに移動させた状態の断面図である。FIG. 5 is a cross-sectional view of a state in which the operation knob 21 is moved in the direction of arrow B2 with respect to the tubular portion 13. 他の実施の形態に係る電圧センサ1Aの断面図である。It is sectional drawing of the voltage sensor 1A which concerns on other embodiment. 他の実施の形態に係る電圧センサ1Aの電極保持部3A(電極2)、電線挿入部4Aおよびストッパ5を分離させた状態の断面図である。It is sectional drawing of the state which separated the electrode holding part 3A (electrode 2), the electric wire insertion part 4A, and the stopper 5 of the voltage sensor 1A which concerns on another embodiment. 他の実施の形態に係る電圧センサ1Aの他の断面図である。It is another cross-sectional view of the voltage sensor 1A which concerns on another embodiment.

以下、センサの実施の形態について、添付図面を参照して説明する。 Hereinafter, embodiments of the sensor will be described with reference to the accompanying drawings.

図1,2に示す電圧センサ1は、「センサ」の一例であって、導線(芯線)が絶縁被覆で覆われて絶縁された被覆電線X(「被覆電線」の一例:図7参照)に供給されている電圧(「被覆電線についての被検出量」の一例)を被覆電線Xの導線に対して非接触の状態で検出可能に構成されている。この電圧センサ1は、図1〜4に示すように、電極2、電極保持部3、電線挿入部4およびストッパ5を備え、検出対象の被覆電線Xに装着可能に(被覆電線Xを挿入可能に)構成されると共に、図示しない測定装置に信号ケーブル6を介して接続可能に構成されている。 The voltage sensor 1 shown in FIGS. 1 and 2 is an example of a “sensor”, and is a coated electric wire X in which a conducting wire (core wire) is covered with an insulating coating and insulated (an example of a “coated electric wire”: see FIG. 7). It is configured so that the supplied voltage (an example of "detected amount for the covered electric wire") can be detected in a non-contact state with respect to the conducting wire of the coated electric wire X. As shown in FIGS. 1 to 4, the voltage sensor 1 includes an electrode 2, an electrode holding portion 3, an electric wire insertion portion 4, and a stopper 5, and can be mounted on the coated electric wire X to be detected (the coated electric wire X can be inserted). It is configured so that it can be connected to a measuring device (not shown) via a signal cable 6.

電極2は、「電極」の一例であって、図7に示すように、導電性を有する金属材料で柱状(本例では円柱状)に形成され、後述するように電線挿入部4に挿入された被覆電線Xに先端部2a(先端面S2:図5参照)が押し付けられた状態で、被覆電線Xの絶縁被覆を介して被覆電線Xの導線と容量結合させられる。この電極2は、図5に示すように、電極保持部3における後述の保持部本体11から先端部2a(先端面S2)が露出するように保持部本体11に挿通させられて保持部本体11と一体化されると共に、図7に示すように、保持部本体11内において信号ケーブル6が基端部2bに接続されている。 The electrode 2 is an example of an “electrode”, and as shown in FIG. 7, the electrode 2 is formed of a conductive metal material into a columnar shape (cylindrical shape in this example), and is inserted into the electric wire insertion portion 4 as described later. In a state where the tip portion 2a (tip surface S2: see FIG. 5) is pressed against the coated electric wire X, it is capacitively coupled to the conducting wire of the coated electric wire X via the insulating coating of the coated electric wire X. As shown in FIG. 5, the electrode 2 is inserted through the holding portion main body 11 so that the tip portion 2a (tip surface S2) is exposed from the holding portion main body 11 described later in the electrode holding portion 3, and the holding portion main body 11 is inserted. As shown in FIG. 7, the signal cable 6 is connected to the base end portion 2b in the holding portion main body 11.

電極保持部3は、「電極保持部」の一例であって、全体として筒状(本例では、円筒状)に形成されている。この電極保持部3は、図3〜5,7に示すように、保持部本体11、絶縁体12a,12b(図7参照)、筒状部13、コイルスプリング14、操作用ノブ21およびコイルスプリング22を備えている。保持部本体11は、一例として、導電性を有する金属材料で電極2を挿通可能な筒状(円筒状)に形成されている。この保持部本体11には、後述するようにコイルスプリング14の一端部が当接させられる凸部11aが長手方向の中央部に形成されると共に、保持部本体11に対する筒状部13の移動を制限するためのストッパ15(スナップリング)を嵌入可能な溝部11b(図7等参照)が長手方向の後端部に形成されている。 The electrode holding portion 3 is an example of the “electrode holding portion”, and is formed in a tubular shape (in this example, a cylindrical shape) as a whole. As shown in FIGS. 3 to 5 and 7, the electrode holding portion 3 includes a holding portion main body 11, insulators 12a and 12b (see FIG. 7), a tubular portion 13, a coil spring 14, an operation knob 21, and a coil spring. 22 is provided. As an example, the holding portion main body 11 is made of a conductive metal material and is formed in a cylindrical shape (cylindrical shape) through which the electrode 2 can be inserted. As will be described later, the holding portion main body 11 is formed with a convex portion 11a to which one end of the coil spring 14 is brought into contact with the holding portion main body 11 at the central portion in the longitudinal direction, and the tubular portion 13 is moved with respect to the holding portion main body 11. A groove portion 11b (see FIG. 7 and the like) into which a stopper 15 (snap ring) for limiting is fitted is formed at the rear end portion in the longitudinal direction.

また、保持部本体11には、後述するように電線挿入部4に設けられたスリット32c(図3,5,7等参照)への係合が可能な凸部11cが設けられている。これにより、本例の保持部本体11は、電線挿入部4に対する筒長方向への相対的な移動が許容された状態で電線挿入部4に対する相対的な回動が規制される。また、本例の電圧センサ1(保持部本体11)では、上記の凸部11cが「移動規制用凸部」として機能し、後述するように電線挿入部4に固定されたストッパ5に当接させられることで電線挿入部4に対する保持部本体11(電極保持部3)の移動が規制される構成が採用されている。この場合、本例の電極保持部3(保持部本体11)では、「移動規制用凸部」としての機能を有する凸部11cが1つだけ設けられている。また、図1〜4,7に示すように、保持部本体11の後端部には、信号ケーブル6の屈曲を防止するためのブッシュ6aが取り付けられている。 Further, the holding portion main body 11 is provided with a convex portion 11c capable of engaging with a slit 32c (see FIGS. 3, 5, 7 and the like) provided in the electric wire insertion portion 4 as described later. As a result, the holding portion main body 11 of this example is restricted from rotating relative to the electric wire inserting portion 4 in a state where relative movement in the cylinder length direction with respect to the electric wire inserting portion 4 is allowed. Further, in the voltage sensor 1 (holding portion main body 11) of this example, the convex portion 11c functions as a "convex portion for movement regulation" and comes into contact with a stopper 5 fixed to the electric wire insertion portion 4 as described later. A configuration is adopted in which the movement of the holding portion main body 11 (electrode holding portion 3) with respect to the electric wire inserting portion 4 is restricted by being forced to move. In this case, the electrode holding portion 3 (holding portion main body 11) of this example is provided with only one convex portion 11c having a function as a “convex portion for movement regulation”. Further, as shown in FIGS. 1 to 4 and 7, a bush 6a for preventing bending of the signal cable 6 is attached to the rear end portion of the holding portion main body 11.

絶縁体12a,12bは、電極2および保持部本体11を相互に絶縁しつつ保持部本体11に対して電極2を保持可能に筒状(円筒状)に形成されている。この場合、本例の電圧センサ1では、図7に示すように、絶縁体12a,12bによって保持部本体11内に電極2を保持することで、電極2、保持部本体11および絶縁体12a,12bが一体化された状態となっている。 The insulators 12a and 12b are formed in a tubular shape (cylindrical shape) so that the electrode 2 and the holding portion main body 11 can be held with respect to the holding portion main body 11 while insulating each other. In this case, in the voltage sensor 1 of this example, as shown in FIG. 7, by holding the electrode 2 in the holding portion main body 11 by the insulators 12a and 12b, the electrode 2, the holding portion main body 11 and the insulator 12a, 12b is in an integrated state.

筒状部13は、図3,4に示すように、保持部本体11を挿通可能な筒状(円筒状)に形成されると共に、図7に示すように、保持部本体11に対する筒長方向への相対的な移動、および保持部本体11に対する相対的な回動が許容された状態で保持部本体11に装着されている。この筒状部13には、図3,4,7に示すように、電線挿入部4の内周面に形成されている後述の雌ネジ32bに螺合可能な雄ネジ13aが外周面に形成されると共に、図3,4に示すように、後述のコイルスプリング22の一端部が当接させられるストッパ23(スナップリング)を嵌入可能な溝部13bが形成されている。 As shown in FIGS. 3 and 4, the tubular portion 13 is formed in a cylindrical shape (cylindrical shape) through which the holding portion main body 11 can be inserted, and as shown in FIG. 7, the tubular portion 13 is in the tubular length direction with respect to the holding portion main body 11. It is attached to the holding portion main body 11 in a state in which relative movement to and relative rotation with respect to the holding portion main body 11 are permitted. As shown in FIGS. 3, 4, and 7, the tubular portion 13 is formed on the outer peripheral surface with a male screw 13a that can be screwed into the female screw 32b described later, which is formed on the inner peripheral surface of the electric wire insertion portion 4. At the same time, as shown in FIGS. 3 and 4, a groove portion 13b into which a stopper 23 (snap ring) to which one end of the coil spring 22 described later is brought into contact is formed is formed.

これにより、本例の電圧センサ1では、後述するように、電線挿入部4に対する筒状部13の相対的な回動によって電線挿入部4および電極保持部3(保持部本体11および筒状部13等)の筒長方向に沿って筒状部13が相対的に移動させられて、筒状部13と共に保持部本体11および電極2が電線挿入部4に対して移動させられ、電線挿入部4に挿入された被覆電線Xに対して電極2を接近させる接近方向、および被覆電線Xから電極2を離間させる離間方向に電極2を移動させることが可能となっている。 As a result, in the voltage sensor 1 of this example, as will be described later, the electric wire insertion portion 4 and the electrode holding portion 3 (holding portion main body 11 and the tubular portion) are caused by the relative rotation of the tubular portion 13 with respect to the electric wire inserting portion 4. The tubular portion 13 is relatively moved along the tubular length direction of (13, etc.), and the holding portion main body 11 and the electrode 2 are moved together with the tubular portion 13 with respect to the electric wire insertion portion 4. It is possible to move the electrode 2 in the approaching direction in which the electrode 2 is brought closer to the coated electric wire X inserted in 4 and in the separating direction in which the electrode 2 is separated from the coated electric wire X.

また、本例の電圧センサ1における筒状部13は、図7等に示すように、上記の雄ネジ13aが形成されている部位の外径が電線挿入部4において雌ネジ32bが形成されている部位の内径と同程度となるように(雌ネジ32bに対して雄ネジ13aを螺合可能となるように)形成されると共に、その他の部位の外径が雄ネジ13aの形成部位の外径よりも小径となるように形成されている。これにより、本例の筒状部13では、外周面における雄ネジ13aの形成部位とその他の部位との間に段部が生じており、後述するように、この外周面の段部に操作用ノブ21の凸部21aが当接して筒状部13に対する操作用ノブ21の筒長方向に沿った移動が制限される。 Further, as shown in FIG. 7 and the like, the tubular portion 13 of the voltage sensor 1 of this example has a female screw 32b formed in the electric wire insertion portion 4 having an outer diameter of a portion where the male screw 13a is formed. It is formed so as to be about the same as the inner diameter of the existing part (so that the male screw 13a can be screwed into the female screw 32b), and the outer diameter of the other part is outside the part where the male screw 13a is formed. It is formed so that the diameter is smaller than the diameter. As a result, in the tubular portion 13 of this example, a step portion is generated between the formation portion of the male screw 13a on the outer peripheral surface and other portions, and as will be described later, the step portion on the outer peripheral surface is used for operation. The convex portion 21a of the knob 21 abuts and the movement of the operating knob 21 with respect to the tubular portion 13 along the tubular length direction is restricted.

さらに、図3,4に示すように、筒状部13の外周面における上記の雄ネジ13aの形成部位以外の部位には、この筒状部13に対する操作用ノブ21の相対的な回動を規制可能に平面部13c,13cが設けられている。また、本例の筒状部13では、図7に示すように、上記の雄ネジ13aの形成部位以外の部位の内径が保持部本体11の外径と同程度(僅かに大径)となるように形成されると共に、雄ネジ13aの形成部位の内径が保持部本体11の外径よりも大径でコイルスプリング14を挿入可能な内径となるように形成されている。これにより、本例の筒状部13では、内周面における雄ネジ13aの形成部位とその他の部位との間にも段部が生じており、後述するように、この内周面の段部にコイルスプリング14の一端部が当接させられる。 Further, as shown in FIGS. 3 and 4, the operation knob 21 is relatively rotated with respect to the tubular portion 13 at a portion other than the above-mentioned male screw 13a forming portion on the outer peripheral surface of the tubular portion 13. Plane portions 13c and 13c are provided so as to be regulateable. Further, in the tubular portion 13 of this example, as shown in FIG. 7, the inner diameter of a portion other than the above-mentioned male screw 13a forming portion is about the same as the outer diameter of the holding portion main body 11 (slightly larger diameter). The inner diameter of the portion where the male screw 13a is formed is larger than the outer diameter of the holding portion main body 11 and is formed so as to be an inner diameter into which the coil spring 14 can be inserted. As a result, in the tubular portion 13 of this example, a stepped portion is also formed between the formation portion of the male screw 13a on the inner peripheral surface and other portions, and as will be described later, the stepped portion of the inner peripheral surface. One end of the coil spring 14 is brought into contact with the coil spring 14.

コイルスプリング14は、図7に示すように、一端部が保持部本体11の凸部11aに当接すると共に他端部が保持部本体11に装着された筒状部13における内周面の段部に当接するように保持部本体11と筒状部13との間に配設され、その弾性復元力(伸長方向への付勢力)によって筒状部13に対して保持部本体11を矢印B1の向きに付勢する。 As shown in FIG. 7, the coil spring 14 has one end abutting on the convex portion 11a of the holding portion main body 11 and the other end portion of the inner peripheral surface of the tubular portion 13 mounted on the holding portion main body 11. The holding portion main body 11 is arranged between the holding portion main body 11 and the tubular portion 13 so as to be in contact with the tubular portion 13, and the holding portion main body 11 is attached to the tubular portion 13 by the elastic restoring force (urging force in the extension direction) of the arrow B1. Tension in the direction.

操作用ノブ21は、図3,4に示すように、筒状部13を挿通可能な筒状(円筒状)に形成されると共に、筒状部13に対する筒長方向への相対的な移動が許容され、かつ筒状部13に対する相対的な回動が規制された状態で筒状部13に装着されている。この操作用ノブ21は、後述するように被覆電線Xに対して電圧センサ1を装着するとき、および被覆電線Xから電圧センサ1を取り外すときには、電線挿入部4や保持部本体11に対して筒状部13を相対的に回動させるための操作用部材として機能すると共に、被覆電線Xに対して電圧センサ1を装着した状態においては、電線挿入部4や保持部本体11に対して筒状部13が相対的に回動するのを規制するための回動規制部材として機能する。 As shown in FIGS. 3 and 4, the operation knob 21 is formed in a cylindrical shape (cylindrical shape) through which the tubular portion 13 can be inserted, and the movement of the operation knob 21 relative to the tubular portion 13 in the tubular length direction is possible. It is attached to the tubular portion 13 in a state where it is allowed and the relative rotation with respect to the tubular portion 13 is restricted. As will be described later, the operation knob 21 is a cylinder with respect to the electric wire insertion portion 4 and the holding portion main body 11 when the voltage sensor 1 is attached to the coated electric wire X and when the voltage sensor 1 is removed from the coated electric wire X. It functions as an operating member for relatively rotating the shape portion 13, and when the voltage sensor 1 is attached to the covered electric wire X, it has a tubular shape with respect to the electric wire insertion portion 4 and the holding portion main body 11. It functions as a rotation restricting member for restricting the relative rotation of the portion 13.

具体的には、図3,4,7に示すように、操作用ノブ21は、筒状部13における外周面の段部に当接可能な内径の凸部21aが内周面に形成されると共に、この凸部21aの形成部位における内側形状(開口形状)が、筒状部13における雄ネジ13aの形成部位以外の部位の外形と同形の非正円形に形成されて、これにより、筒状部13に対する相対的な回動が規制されている。また、図3,7に示すように、操作用ノブ21において電線挿入部4に当接させられる当接部F3(先端部側の端面)には、後述するように電線挿入部4において操作用ノブ21に当接させられる当接部F4(後端部側の端面)に設けられた係合部E4に係合可能な係合部E3が設けられている。 Specifically, as shown in FIGS. 3, 4, and 7, in the operation knob 21, a convex portion 21a having an inner diameter capable of contacting a step portion on the outer peripheral surface of the tubular portion 13 is formed on the inner peripheral surface. At the same time, the inner shape (opening shape) at the forming portion of the convex portion 21a is formed into a non-circular shape having the same shape as the outer shape of the portion other than the forming portion of the male screw 13a in the tubular portion 13, thereby forming a tubular shape. The relative rotation with respect to the portion 13 is regulated. Further, as shown in FIGS. 3 and 7, the contact portion F3 (end surface on the tip end side) brought into contact with the electric wire insertion portion 4 in the operation knob 21 is used for operation in the electric wire insertion portion 4 as described later. An engaging portion E3 that can be engaged with the engaging portion E4 provided on the contact portion F4 (end surface on the rear end side side) that is brought into contact with the knob 21 is provided.

コイルスプリング22は、図7に示すように、一端部が筒状部13に装着された操作用ノブ21の凸部21aに当接すると共に他端部が筒状部13の溝部13bに嵌入されたストッパ23に当接するように筒状部13と操作用ノブ21との間に配設され、その弾性復元力(伸長方向への付勢力)によって筒状部13に対して操作用ノブ21を矢印B1の向きに付勢する。 As shown in FIG. 7, one end of the coil spring 22 comes into contact with the convex portion 21a of the operation knob 21 mounted on the tubular portion 13, and the other end thereof is fitted into the groove portion 13b of the tubular portion 13. The operation knob 21 is arranged between the tubular portion 13 and the operation knob 21 so as to come into contact with the stopper 23, and the operation knob 21 is arrowed with respect to the tubular portion 13 by the elastic restoring force (urging force in the extension direction). Bounce in the direction of B1.

電線挿入部4は、「電線挿入部」の一例であって、図3,4,7に示すように、一例として、ステンレス鋼で筒状(本例では円筒状)に形成されている。この電線挿入部4は、「周壁」を構成する筒状部31の基端部が開口されて(「筒長方向の一端部が開口され」との構成の一例)電極保持部3を嵌入可能に構成されると共に、筒状部31の先端部が閉塞されている(「筒長方向の他端部が閉塞され」との構成の一例)。 The electric wire insertion portion 4 is an example of the “electric wire insertion portion”, and as shown in FIGS. 3, 4 and 7, the electric wire insertion portion 4 is formed of stainless steel in a tubular shape (cylindrical shape in this example) as an example. The electric wire insertion portion 4 can be fitted with the electrode holding portion 3 in which the base end portion of the tubular portion 31 constituting the "peripheral wall" is opened (an example of a configuration in which "one end portion in the tubular length direction is opened"). The tip of the tubular portion 31 is closed (an example of the configuration in which the other end in the tubular length direction is closed).

また、電線挿入部4は、図3〜7に示すように、筒状部31の一部が切り欠かれて形成された側面視L字状の切欠き32a(「切欠き」の一例)が設けられて、この切欠き32aに被覆電線Xを挿入可能に構成されている。この場合、本例の電圧センサ1における電線挿入部4では、図5に示すように、切欠き32aにおける先端部側(「電線挿入部の他端部の側」:同図における左側)の電線挿入部4の周方向に沿った開口幅(同図における上下方向の開口幅)が基端部から先端部に向かうほど狭くなるように(「電線挿入部の一端部から他端部に向かうほど狭くなるように」との構成の一例)切欠き32aにおける先端部側が円弧状に形成されている。 Further, as shown in FIGS. 3 to 7, the electric wire insertion portion 4 has a side view L-shaped notch 32a (an example of the “notch”) formed by notching a part of the tubular portion 31. It is provided so that the coated electric wire X can be inserted into the notch 32a. In this case, in the electric wire insertion portion 4 in the voltage sensor 1 of this example, as shown in FIG. 5, the electric wire on the tip end side (“the other end side of the electric wire insertion portion”: the left side in the figure) in the notch 32a. The opening width along the circumferential direction of the insertion portion 4 (the opening width in the vertical direction in the figure) becomes narrower from the base end portion toward the tip end portion (“from one end portion to the other end portion of the wire insertion portion”. Example of the configuration of "to be narrower") The tip end side of the notch 32a is formed in an arc shape.

また、本例の電線挿入部4では、図5,6に示すように、電線挿入部4の内面において電極保持部3によって保持された電極2の先端面S2と対向させられる対向面S4が電線挿入部4の筒径方向において切欠き32aにおける先端部側の内縁部の一部と一直線状に連続するように形成されて(本例では、側面視において対向面S4が切欠き32aの内縁部と正接するように形成されて)、切欠き32aに挿入された被覆電線Xが電線挿入部4に対して径方向に沿って一直線状に接する電線接触部Pxが設けられている。この場合、この電線挿入部4では、切欠き32aの内縁部における先端部側の頂部Ppに電線接触部Pxが設けられている。 Further, in the electric wire insertion portion 4 of this example, as shown in FIGS. 5 and 6, the facing surface S4 facing the tip surface S2 of the electrode 2 held by the electrode holding portion 3 on the inner surface of the electric wire inserting portion 4 is an electric wire. It is formed so as to be continuous with a part of the inner edge portion on the tip end side of the notch 32a in the tubular radial direction of the insertion portion 4 (in this example, the facing surface S4 is the inner edge portion of the notch 32a in the side view. A wire contact portion Px is provided in which the covered electric wire X inserted into the notch 32a is in direct contact with the wire insertion portion 4 along the radial direction. In this case, in the electric wire insertion portion 4, the electric wire contact portion Px is provided at the top portion Pp on the tip end side of the inner edge portion of the notch 32a.

さらに、電線挿入部4における筒状部31は、その内周面に雌ネジ32bが形成されて電極保持部3(筒状部13)の雄ネジ13aを螺合させることができるように構成されている。この場合、本例の電圧センサ1では、電極保持部3における筒状部13の雄ネジ13a、および電線挿入部4(筒状部31)の雌ネジ32bが正ネジで構成されている。また、筒状部31には、前述のように保持部本体11に設けられた凸部11cが係合可能なスリット32cが設けられている。さらに、図4,7に示すように、電線挿入部4(筒状部31)において電極保持部3が当接させられる当接部F4(後端部側の端面)には、前述のように電極保持部3において電線挿入部4に当接させられる当接部F3に設けられた係合部E3に係合可能な係合部E4が設けられている。 Further, the tubular portion 31 of the electric wire insertion portion 4 is configured such that a female screw 32b is formed on the inner peripheral surface thereof and the male screw 13a of the electrode holding portion 3 (cylindrical portion 13) can be screwed. ing. In this case, in the voltage sensor 1 of this example, the male screw 13a of the tubular portion 13 in the electrode holding portion 3 and the female screw 32b of the electric wire insertion portion 4 (cylindrical portion 31) are composed of positive screws. Further, the tubular portion 31 is provided with a slit 32c to which the convex portion 11c provided on the holding portion main body 11 can be engaged as described above. Further, as shown in FIGS. 4 and 7, the contact portion F4 (end surface on the rear end portion side) to which the electrode holding portion 3 is brought into contact with the electric wire insertion portion 4 (cylindrical portion 31) is as described above. The electrode holding portion 3 is provided with an engaging portion E4 that can be engaged with the engaging portion E3 provided in the contact portion F3 that is brought into contact with the electric wire inserting portion 4.

この場合、図3,4,7に示すように、電線挿入部4の係合部E4は、電線挿入部4の周方向に沿って当接部F4に等間隔で形成された複数の凸部を備えて構成されている。また、電極保持部3における操作用ノブ21の係合部E3は、電線挿入部4の周方向において隣接する凸部の間の凹部にそれぞれ係合可能に筒状部13の周方向に沿って当接部F3に等間隔で形成された複数の凸部を備え、周方向において隣接する各凸部の間の各凹部に電線挿入部4における係合部E4の各凸部がそれぞれ係合可能に構成されている。これにより、本例の電圧センサ1では、係合部E3,E4が互いに係合させられることで電線挿入部4に対する操作用ノブ21の相対的な回動が規制されると共に、係合部E3,E4の係合が解除されることで電線挿入部4に対する操作用ノブ21の相対的な回動が許容される。 In this case, as shown in FIGS. 3, 4, and 7, the engaging portion E4 of the electric wire inserting portion 4 has a plurality of convex portions formed at equal intervals on the abutting portion F4 along the circumferential direction of the electric wire inserting portion 4. It is configured with. Further, the engaging portion E3 of the operation knob 21 in the electrode holding portion 3 can be engaged with the concave portions between the adjacent convex portions in the circumferential direction of the electric wire inserting portion 4 along the circumferential direction of the tubular portion 13. The contact portion F3 is provided with a plurality of convex portions formed at equal intervals, and each convex portion of the engaging portion E4 in the electric wire insertion portion 4 can be engaged with each concave portion between the adjacent convex portions in the circumferential direction. It is configured in. As a result, in the voltage sensor 1 of this example, the engaging portions E3 and E4 are engaged with each other to regulate the relative rotation of the operation knob 21 with respect to the electric wire inserting portion 4, and the engaging portion E3 , E4 is disengaged to allow the operation knob 21 to rotate relative to the wire insertion portion 4.

さらに、本例の電圧センサ1では、前述したように、電線挿入部4(筒状部31)の雌ネジ32bに筒状部13の雄ネジ13aが螺合させられると共に、コイルスプリング22の弾性復元力(伸長方向への付勢力)によって筒状部13に対して操作用ノブ21が「接近方向(矢印B1の向き)」で付勢されている。 Further, in the voltage sensor 1 of this example, as described above, the male screw 13a of the tubular portion 13 is screwed into the female screw 32b of the electric wire insertion portion 4 (cylindrical portion 31), and the elasticity of the coil spring 22 is increased. The operation knob 21 is urged to the tubular portion 13 in the "approaching direction (direction of arrow B1)" by the restoring force (the urging force in the extension direction).

また、本例の電圧センサ1では、前述したように、筒状部13の外周面における雄ネジ13aの形成部位とその他の部位との間に段部が生じており、この外周面の段部に操作用ノブ21の凸部21aが当接して筒状部13に対する操作用ノブ21の矢印B1の向きへの移動が制限されている。これにより、本例の電圧センサ1では、図7に示すように、電線挿入部4に挿入された被覆電線Xの絶縁被覆に対して電極保持部3によって保持された電極2が接しない「非接触位置」に保持部本体11が位置しているときに、保持部本体11に対する筒状部13の「接近方向(矢印B1の向き)」への移動が規制されて当接部F4から当接部F3を離間させた状態が維持される。 Further, in the voltage sensor 1 of this example, as described above, a step portion is formed between the portion where the male screw 13a is formed on the outer peripheral surface of the tubular portion 13 and the other portion, and the step portion on the outer peripheral surface is formed. The convex portion 21a of the operating knob 21 abuts on the tubular portion 13 to restrict the movement of the operating knob 21 in the direction of the arrow B1 with respect to the tubular portion 13. As a result, in the voltage sensor 1 of this example, as shown in FIG. 7, the electrode 2 held by the electrode holding portion 3 does not come into contact with the insulating coating of the coated electric wire X inserted into the electric wire inserting portion 4. When the holding portion main body 11 is located at the "contact position", the movement of the tubular portion 13 with respect to the holding portion main body 11 in the "approaching direction (direction of arrow B1)" is restricted, and the holding portion F4 contacts the holding portion main body 11. The state in which the portions F3 are separated is maintained.

ストッパ5は、「移動規制用部材」の一例であって、図3,4に示すように、ステンレス鋼、リン青銅およびベリリウム銅などのばね用鋼材で全体としてC字状(「環状」の一例)に形成されて、図7に示すように、筒状部31内に圧入されて電線挿入部4に固定されている。このストッパ5は、電極保持部3および電線挿入部4の間に配設されて電極保持部3に対する筒長方向への相対的な移動が可能な状態で電線挿入部4に固定されると共に、電極保持部3に対して電線挿入部4が「予め規定された位置」まで「離間方向(矢印B1の向き)」へ移動させられたときに電極保持部3における保持部本体11の周面に設けられている前述の凸部11cに当接して電極保持部3に対する電線挿入部4の「離間方向(矢印B1の向き)」へ移動を規制可能に構成されている。 The stopper 5 is an example of a “movement control member”, and as shown in FIGS. 3 and 4, is a spring steel material such as stainless steel, phosphor bronze, and beryllium copper, and has a C shape as a whole (an example of “annular”). ), And as shown in FIG. 7, it is press-fitted into the tubular portion 31 and fixed to the electric wire insertion portion 4. The stopper 5 is arranged between the electrode holding portion 3 and the electric wire inserting portion 4 and is fixed to the electric wire inserting portion 4 in a state where the stopper 5 can move relative to the electrode holding portion 3 in the cylinder length direction. When the electric wire insertion portion 4 is moved in the "separation direction (direction of arrow B1)" to the "predetermined position" with respect to the electrode holding portion 3, the peripheral surface of the holding portion main body 11 in the electrode holding portion 3 It is configured so that it can be restricted from moving in the "separation direction (direction of arrow B1)" of the electric wire insertion portion 4 with respect to the electrode holding portion 3 in contact with the above-mentioned convex portion 11c provided.

具体的には、本例の電圧センサ1におけるストッパ5は、電線挿入部4に圧入されていない状態における外径が電線挿入部4における筒状部31の内径よりも僅かに大きく、かつ、電線挿入部4に圧入された状態(圧入によって縮径された状態)における内径が電極保持部3における保持部本体11の外径よりも僅かに大きくなるような大きさに形成されている。また、ストッパ5は、ストッパ5の周方向における一端部と他端部との間の隙間における周方向の長さが、電線挿入部4に圧入されていない状態において電極保持部3の保持部本体11における周方向に沿った凸部11cの長さ以上となり、かつ電線挿入部4に圧入された状態において保持部本体11における周方向に沿った凸部11cの長さを下回るように弾性変形可能に構成されている。 Specifically, the stopper 5 in the voltage sensor 1 of this example has an outer diameter slightly larger than the inner diameter of the tubular portion 31 in the electric wire insertion portion 4 in a state where it is not press-fitted into the electric wire insertion portion 4, and the electric wire. The inner diameter in the state of being press-fitted into the insertion portion 4 (the state of being reduced in diameter by press-fitting) is formed to be slightly larger than the outer diameter of the holding portion main body 11 in the electrode holding portion 3. Further, the stopper 5 has a holding portion main body of the electrode holding portion 3 in a state where the length in the circumferential direction in the gap between one end portion and the other end portion in the circumferential direction of the stopper 5 is not press-fitted into the electric wire insertion portion 4. Elastically deformable so as to be longer than the length of the convex portion 11c along the circumferential direction in 11 and less than the length of the convex portion 11c along the circumferential direction in the holding portion main body 11 in a state of being press-fitted into the electric wire insertion portion 4. It is configured in.

この電圧センサ1の組立てに際しては、まず、電極2および絶縁体12a,12bを保持部本体11内に挿入してこれらを一体化させると共に、電極2の基端部2bに信号ケーブル6の芯線を半田付けして電極2に信号ケーブル6を固定する。また、筒状部13の基端部側から操作用ノブ21およびコイルスプリング22を装着した後に、筒状部13の溝部13bにストッパ23を嵌入して操作用ノブ21およびコイルスプリング22の筒状部13からの離脱を規制する。次いで、保持部本体11の基端部側からコイルスプリング14および筒状部13をこの順で装着した後に、保持部本体11の溝部11bにストッパ15を嵌入してコイルスプリング14および筒状部13の保持部本体11からの離脱を規制する。 When assembling the voltage sensor 1, first, the electrode 2 and the insulators 12a and 12b are inserted into the holding portion main body 11 to integrate them, and the core wire of the signal cable 6 is attached to the base end portion 2b of the electrode 2. The signal cable 6 is fixed to the electrode 2 by soldering. Further, after mounting the operation knob 21 and the coil spring 22 from the base end side of the tubular portion 13, the stopper 23 is fitted into the groove portion 13b of the tubular portion 13 to form the tubular portion 21 and the coil spring 22. Regulate withdrawal from Part 13. Next, the coil spring 14 and the tubular portion 13 are mounted in this order from the base end side of the holding portion main body 11, and then the stopper 15 is fitted into the groove portion 11b of the holding portion main body 11 to fit the coil spring 14 and the tubular portion 13. The detachment from the holding portion main body 11 is restricted.

続いて、信号ケーブル6を挿通させたブッシュ6aを保持部本体11の基端部に固定すると共に、保持部本体11に対してストッパ5を装着する。この場合、保持部本体11に対するストッパ5の装着時には、まず、保持部本体11の先端部にストッパ5を取り付け、次いで、ストッパ5の周方向における一端部および他端部の間の隙間を凸部11cが通過するように保持部本体11に対してストッパ5を相対的に移動させることにより、凸部11a,11cの間にストッパ5を位置させる。続いて、保持部本体11に対してストッパ5を180度回動させ、凸部11cに対して保持部本体11の筒長方向にストッパ5の隙間が存在しない状態とする。 Subsequently, the bush 6a through which the signal cable 6 is inserted is fixed to the base end portion of the holding portion main body 11, and the stopper 5 is attached to the holding portion main body 11. In this case, when the stopper 5 is attached to the holding portion main body 11, the stopper 5 is first attached to the tip end portion of the holding portion main body 11, and then the gap between one end portion and the other end portion in the circumferential direction of the stopper 5 is convex. By moving the stopper 5 relative to the holding portion main body 11 so that the 11c passes, the stopper 5 is positioned between the convex portions 11a and 11c. Subsequently, the stopper 5 is rotated 180 degrees with respect to the holding portion main body 11 so that there is no gap between the stopper 5 in the cylinder length direction of the holding portion main body 11 with respect to the convex portion 11c.

次いで、電線挿入部4における基端部側の開口部から保持部本体11の先端部を挿入し、電線挿入部4に対して保持部本体11を各図の矢印B1の向きで押し込む。この際に、保持部本体11の凸部11a,11cの間に位置させられているストッパ5が電線挿入部4における筒状部31の基端部に接した状態から電線挿入部4に対して保持部本体11をさらに押し込んだときには、ストッパ5が縮径方向で弾性変形して筒状部31内に進入させられる。 Next, the tip of the holding portion main body 11 is inserted from the opening on the base end side of the electric wire inserting portion 4, and the holding portion main body 11 is pushed into the electric wire inserting portion 4 in the direction of the arrow B1 in each drawing. At this time, the stopper 5 located between the convex portions 11a and 11c of the holding portion main body 11 is in contact with the base end portion of the tubular portion 31 of the electric wire inserting portion 4 with respect to the electric wire inserting portion 4. When the holding portion main body 11 is further pushed in, the stopper 5 is elastically deformed in the radial direction and is allowed to enter the tubular portion 31.

また、電線挿入部4に対して保持部本体11をさらに押し込んで電線挿入部4におけるスリット32cの後端に凸部11cが位置したときには、電線挿入部4に対して保持部本体11を相対的に回動させることによって凸部11cがスリット32c内に進入可能な状態とする。さらに、凸部11cをスリット32c内に進入させた状態から電線挿入部4に対して保持部本体11をさらに押し込むことにより、電線挿入部4の後端部に筒状部13の先端部が当接したときには、電線挿入部4に対して操作用ノブ21を矢印A1の向きに回動させることで電線挿入部4に対して筒状部13を回動させ、雌ネジ32bに対して筒状部13の雄ネジ13aを螺合させる。この際に、保持部本体11の先端部に装着されているストッパ5は、保持部本体11の凸部11aに押されるようにして筒状部13内を先端部に向けて移動させられる。 Further, when the holding portion main body 11 is further pushed against the electric wire inserting portion 4 and the convex portion 11c is located at the rear end of the slit 32c in the electric wire inserting portion 4, the holding portion main body 11 is relative to the electric wire inserting portion 4. By rotating the convex portion 11c to the slit 32c, the convex portion 11c can enter the slit 32c. Further, by further pushing the holding portion main body 11 against the electric wire inserting portion 4 from the state where the convex portion 11c is inserted into the slit 32c, the tip end portion of the tubular portion 13 hits the rear end portion of the electric wire inserting portion 4. When in contact with the wire insertion portion 4, the operation knob 21 is rotated in the direction of the arrow A1 to rotate the tubular portion 13 with respect to the wire insertion portion 4, and the tubular portion 13 with respect to the female screw 32b. The male screw 13a of the portion 13 is screwed. At this time, the stopper 5 attached to the tip of the holding portion main body 11 is moved toward the tip portion in the tubular portion 13 so as to be pushed by the convex portion 11a of the holding portion main body 11.

次いで、一例として、電線挿入部4に対して操作用ノブ21を矢印A1の向きで回動させることにより、操作用ノブ21と共に筒状部13を電線挿入部4に対して矢印A1の向きに回動させる。これにより、雌ネジ32bに対して雄ネジ13aが螺合させられている筒状部13が電線挿入部4に対して矢印B1の向きに移動させられると共に、筒状部13が装着されている保持部本体11が筒状部13と共に電線挿入部4に対して矢印B1の向きに移動させられる。この結果、保持部本体11と一体化されている電極2や保持部本体11に装着されているストッパ5が電線挿入部4に対して矢印B1の向きに移動させられる。 Next, as an example, by rotating the operation knob 21 with respect to the electric wire insertion portion 4 in the direction of arrow A1, the tubular portion 13 together with the operation knob 21 is oriented in the direction of arrow A1 with respect to the electric wire insertion portion 4. Rotate. As a result, the tubular portion 13 in which the male screw 13a is screwed with respect to the female screw 32b is moved in the direction of the arrow B1 with respect to the electric wire insertion portion 4, and the tubular portion 13 is mounted. The holding portion main body 11 is moved together with the tubular portion 13 in the direction of the arrow B1 with respect to the electric wire inserting portion 4. As a result, the electrode 2 integrated with the holding portion main body 11 and the stopper 5 mounted on the holding portion main body 11 are moved in the direction of the arrow B1 with respect to the electric wire inserting portion 4.

なお、上記のような電線挿入部4に対する操作用ノブ21の回動操作時には、後述するように、電極保持部3(操作用ノブ21)の当接部F3(係合部E3における各凸部の突端)が電線挿入部4の当接部F4(係合部E4における各凸部の突端)に接した状態以降、コイルスプリング22の弾性変形によって筒状部13に対して操作用ノブ21がスライドさせられて、係合部E3,E4の係合および係合解除が繰り返されるが、この動作については後に詳細に説明する。 When the operation knob 21 is rotated with respect to the electric wire insertion portion 4 as described above, the contact portion F3 (each convex portion in the engaging portion E3) of the electrode holding portion 3 (operation knob 21) is described later. After the state in which the tip) is in contact with the contact portion F4 (the tip of each convex portion in the engaging portion E4) of the electric wire insertion portion 4, the operation knob 21 is attached to the tubular portion 13 due to the elastic deformation of the coil spring 22. The engaging portions E3 and E4 are repeatedly engaged and disengaged by being slid, and this operation will be described in detail later.

また、電線挿入部4に対する操作用ノブ21の矢印A1の向きへの回動によって、電極保持部3が電線挿入部4の最も奥側(最も先端部側)まで移動させられたとき(本例の電圧センサ1では、電極保持部3によって保持された電極2の先端面S2が電線挿入部4の対向面S4に接する位置まで移動させられたとき)には、電線挿入部4に対する保持部本体11の移動に伴い、凸部11aに押されるようにして筒状部13内を先端部に向けて移動させられたストッパ5が、電線挿入部4内の固定位置(図7〜11におけるストッパ5の位置)に位置させられる(電線挿入部4内にストッパ5を圧入した状態の一例)。これにより、ストッパ5の弾性復帰力によって電線挿入部4の内側にストッパ5が固定された状態となる。以上により、電圧センサ1の組立てが完了する。 Further, when the electrode holding portion 3 is moved to the innermost side (the most advanced portion side) of the electric wire insertion portion 4 by the rotation of the operation knob 21 with respect to the electric wire insertion portion 4 in the direction of the arrow A1 (this example). In the voltage sensor 1 of the above, when the tip surface S2 of the electrode 2 held by the electrode holding portion 3 is moved to a position where it comes into contact with the facing surface S4 of the electric wire inserting portion 4), the holding portion main body with respect to the electric wire inserting portion 4 Along with the movement of 11, the stopper 5 moved in the tubular portion 13 toward the tip portion by being pushed by the convex portion 11a is at a fixed position in the electric wire insertion portion 4 (stopper 5 in FIGS. 7 to 11). (An example of a state in which the stopper 5 is press-fitted into the electric wire insertion portion 4). As a result, the stopper 5 is fixed inside the electric wire insertion portion 4 by the elastic recovery force of the stopper 5. As described above, the assembly of the voltage sensor 1 is completed.

一方、この電圧センサ1を使用して被覆電線Xの導線に印加されている電圧を検出して電圧値を測定する際には、電圧センサ1を被覆電線Xに装着する。この際に、図1,2に示すように、被覆電線Xに対して非装着状態の電圧センサ1において電極2の先端部や保持部本体11における先端部側が電線挿入部4における切欠き32aの形成部位に位置した状態(保持部本体11の周面を切欠き32aから視認できる状態)となっているときには、電極2や保持部本体11の先端部を電線挿入部4の筒状部31内に収容する。具体的には、一例として、電線挿入部4に対して操作用ノブ21を矢印A2の向きで回動させる。なお、電極2や保持部本体11の先端部が電線挿入部4の切欠き32aに位置した状態においては、電線挿入部4の係合部E4に電極保持部3(操作用ノブ21)の係合部E3が係合させられて電線挿入部4に対する操作用ノブ21の回動が規制されるため、この係合部E3,E4の係合を解除する操作が必要となるが、この解除操作については、後に詳細に説明する。 On the other hand, when the voltage sensor 1 is used to detect the voltage applied to the conducting wire of the coated electric wire X and measure the voltage value, the voltage sensor 1 is attached to the coated electric wire X. At this time, as shown in FIGS. 1 and 2, in the voltage sensor 1 not attached to the covered electric wire X, the tip end portion of the electrode 2 and the tip end portion side of the holding portion main body 11 are notches 32a in the electric wire insertion portion 4. When it is located at the forming site (the peripheral surface of the holding portion main body 11 can be visually recognized from the notch 32a), the tip of the electrode 2 and the holding portion main body 11 is placed in the tubular portion 31 of the electric wire insertion portion 4. To be housed in. Specifically, as an example, the operation knob 21 is rotated with respect to the electric wire insertion portion 4 in the direction of arrow A2. When the electrode 2 and the tip of the holding portion main body 11 are located in the notch 32a of the electric wire inserting portion 4, the electrode holding portion 3 (operation knob 21) is engaged with the engaging portion E4 of the electric wire inserting portion 4. Since the joint portion E3 is engaged and the rotation of the operation knob 21 with respect to the electric wire insertion portion 4 is restricted, it is necessary to disengage the engaging portions E3 and E4. Will be described in detail later.

また、上記のように操作用ノブ21が矢印A2の向きに回動させられたときには、筒状部13が操作用ノブ21と共に電線挿入部4に対して矢印A2の向きに回動させられる。これにより、雌ネジ32bに対して雄ネジ13aが螺合させられている筒状部13が電線挿入部4に対して矢印B2の向きに移動させられると共に、筒状部13が装着されている保持部本体11が筒状部13と共に電線挿入部4に対して矢印B2の向きに移動させられる結果、保持部本体11と一体化されている電極2が電線挿入部4に対して矢印B2の向きに移動させられる。この結果、図7に示すように、電極2および保持部本体11の先端部が電線挿入部4の筒状部31内に収容された状態(保持部本体11の周面を視認できない状態)となる。 Further, when the operation knob 21 is rotated in the direction of the arrow A2 as described above, the tubular portion 13 is rotated together with the operation knob 21 in the direction of the arrow A2 with respect to the electric wire insertion portion 4. As a result, the tubular portion 13 in which the male screw 13a is screwed with respect to the female screw 32b is moved in the direction of the arrow B2 with respect to the electric wire insertion portion 4, and the tubular portion 13 is mounted. As a result of the holding portion main body 11 being moved together with the tubular portion 13 in the direction of the arrow B2 with respect to the electric wire insertion portion 4, the electrode 2 integrated with the holding portion main body 11 is indicated by the arrow B2 with respect to the electric wire inserting portion 4. Can be moved in the direction. As a result, as shown in FIG. 7, the electrode 2 and the tip of the holding portion main body 11 are housed in the tubular portion 31 of the electric wire inserting portion 4 (the peripheral surface of the holding portion main body 11 cannot be visually recognized). Become.

この場合、本例の電圧センサ1では、上記のように電極2および保持部本体11の先端部が電線挿入部4の筒状部31内に収容された状態において、電線挿入部4内に固定されているストッパ5の端面に保持部本体11の凸部11cが当接した状態となるように構成されている。これにより、この電圧センサ1では、ストッパ5が固定されている電線挿入部4に対する保持部本体11の矢印B2の向きへのさらなる移動が規制されるため、電線挿入部4に対して保持部本体11をどの程度移動させたかを把握していなくても、保持部本体11に装着された筒状部13の雄ネジ13aと電線挿入部4の内面に形成された雌ネジ32bとが螺合した状態、すなわち、電極保持部3(保持部本体11および筒状部13等)と電線挿入部4とが一体化した状態が維持される。したがって、この電圧センサ1では、電極保持部3および電線挿入部4の意図しない分離に起因するいずれかの落下が好適に回避される。 In this case, in the voltage sensor 1 of this example, the electrode 2 and the tip of the holding portion main body 11 are fixed in the electric wire insertion portion 4 in a state of being housed in the tubular portion 31 of the electric wire insertion portion 4 as described above. It is configured so that the convex portion 11c of the holding portion main body 11 is in contact with the end surface of the stopper 5. As a result, in this voltage sensor 1, further movement of the holding portion main body 11 in the direction of the arrow B2 with respect to the electric wire inserting portion 4 to which the stopper 5 is fixed is restricted, so that the holding portion main body with respect to the electric wire inserting portion 4 is restricted. Even if it is not known how much the 11 is moved, the male screw 13a of the tubular portion 13 mounted on the holding portion main body 11 and the female screw 32b formed on the inner surface of the electric wire insertion portion 4 are screwed together. The state, that is, the state in which the electrode holding portion 3 (holding portion main body 11 and tubular portion 13 and the like) and the electric wire inserting portion 4 are integrated is maintained. Therefore, in the voltage sensor 1, any drop due to unintended separation of the electrode holding portion 3 and the electric wire inserting portion 4 is preferably avoided.

次いで、電線挿入部4の切欠き32aに被覆電線Xを挿入した後に、被覆電線Xの絶縁被覆に電極2を当接させて電極2を被覆電線Xの導線と容量結合させる。具体的には、一例として、電線挿入部4に挿入されている被覆電線Xの捩れを回避するために、電線挿入部4に対して操作用ノブ21を矢印A1の向きで回動させる。この際には、前述したように、筒状部13の外周面に設けられた段部に操作用ノブ21の凸部21aが当接させられて電極保持部3(操作用ノブ21)の当接部F3が電線挿入部4の当接部F4から離間した状態(すなわち、係合部E4に対する係合部E3の係合が解除された状態)となっているため、電線挿入部4に対して操作用ノブ21をスムースに回動させることが可能となっている。 Next, after inserting the coated electric wire X into the notch 32a of the electric wire inserting portion 4, the electrode 2 is brought into contact with the insulating coating of the coated electric wire X to capacitively couple the electrode 2 with the conducting wire of the coated electric wire X. Specifically, as an example, in order to avoid twisting of the covered electric wire X inserted in the electric wire insertion portion 4, the operation knob 21 is rotated with respect to the electric wire insertion portion 4 in the direction of the arrow A1. At this time, as described above, the convex portion 21a of the operation knob 21 is brought into contact with the step portion provided on the outer peripheral surface of the tubular portion 13 to hit the electrode holding portion 3 (operation knob 21). Since the contact portion F3 is separated from the contact portion F4 of the wire insertion portion 4 (that is, the engagement portion E3 with the engagement portion E4 is disengaged), the contact portion F3 is separated from the wire insertion portion 4. The operation knob 21 can be smoothly rotated.

また、上記のように操作用ノブ21が矢印A1の向きに回動させられたときには、筒状部13が操作用ノブ21と共に電線挿入部4に対して矢印A1の向きに回動させられる。この際には、図8に示すように、雌ネジ32bに対して雄ネジ13aが螺合させられている筒状部13が電線挿入部4に対して矢印B1の向きに移動させられると共に、筒状部13が装着されている保持部本体11が筒状部13と共に電線挿入部4に対して矢印B1の向きに移動させられる結果、保持部本体11と一体化されている電極2が電線挿入部4に対して矢印B1の向きに移動させられる。これにより、電極保持部3(操作用ノブ21)の当接部F3(係合部E3における各凸部の突端)が電線挿入部4の当接部F4(係合部E4における各凸部の突端)に接した状態となる。 Further, when the operation knob 21 is rotated in the direction of the arrow A1 as described above, the tubular portion 13 is rotated together with the operation knob 21 in the direction of the arrow A1 with respect to the electric wire insertion portion 4. At this time, as shown in FIG. 8, the tubular portion 13 in which the male screw 13a is screwed with respect to the female screw 32b is moved in the direction of the arrow B1 with respect to the electric wire insertion portion 4. As a result of the holding portion main body 11 to which the tubular portion 13 is mounted being moved together with the tubular portion 13 in the direction of the arrow B1 with respect to the electric wire insertion portion 4, the electrode 2 integrated with the holding portion main body 11 is an electric wire. It is moved in the direction of the arrow B1 with respect to the insertion portion 4. As a result, the contact portion F3 (the tip of each convex portion in the engaging portion E3) of the electrode holding portion 3 (operation knob 21) becomes the contact portion F4 (the convex portion in the engaging portion E4) of the electric wire insertion portion 4. It will be in contact with the tip).

また、電線挿入部4に対して操作用ノブ21を矢印A1の向きにさらに回動させたときには、電線挿入部4に対する筒状部13の矢印B1の向きへの移動に伴い、電線挿入部4の係合部E4に対する電極保持部3(操作用ノブ21)の係合部E3の係合の度合い(すなわち、係合部E4の凹部に対する係合部E3の凸部の進入の度合い)、および係合部E3に対する係合部E4の係合の度合い(すなわち、係合部E3の凹部に対する係合部E4の凸部の進入の度合い)が徐々に大きくなる。 Further, when the operation knob 21 is further rotated in the direction of the arrow A1 with respect to the electric wire insertion portion 4, the electric wire insertion portion 4 is moved along with the movement of the tubular portion 13 with respect to the electric wire insertion portion 4 in the direction of the arrow B1. The degree of engagement of the engaging portion E3 of the electrode holding portion 3 (operating knob 21) with the engaging portion E4 (that is, the degree of entry of the convex portion of the engaging portion E3 into the concave portion of the engaging portion E4), and The degree of engagement of the engaging portion E4 with the engaging portion E3 (that is, the degree of entry of the convex portion of the engaging portion E4 into the concave portion of the engaging portion E3) gradually increases.

この場合、係合部E4の凹部に係合部E3の凸部が進入し、かつ係合部E3の凹部に係合部E4の凸部が進入した状態で電線挿入部4に対して操作用ノブ21を回動させるためには、各凸部の進入量に応じて、電線挿入部4に対して操作用ノブ21を矢印B2の向きにコイルスプリング22の付勢力に抗して移動させる必要がある。このため、係合部E3,E4の係合の度合いが強くなるのに応じて、電線挿入部4に対して操作用ノブ21を回動させるのに要する力が徐々に大きくなる(操作抵抗が徐々に大きくなる)。 In this case, the convex portion of the engaging portion E3 has entered the concave portion of the engaging portion E4, and the convex portion of the engaging portion E4 has entered the concave portion of the engaging portion E3. In order to rotate the knob 21, it is necessary to move the operation knob 21 with respect to the electric wire insertion portion 4 in the direction of arrow B2 against the urging force of the coil spring 22 according to the approach amount of each convex portion. There is. Therefore, as the degree of engagement of the engaging portions E3 and E4 increases, the force required to rotate the operating knob 21 with respect to the electric wire inserting portion 4 gradually increases (the operating resistance increases). Gradually grow).

しかしながら、本例の電圧センサ1では、係合部E3,E4が係合している状態において電線挿入部4に対して操作用ノブ21を矢印A1の向きに回動させるのに要する力よりも矢印A2の向きに回動させるのに要する力が大きくなるように(言い換えれば、矢印A2の向きに回動させるのに要する力よりも矢印A1の向きに回動させるのに要する力が小さくなるように)係合部E3,E4の各凸部および各凹部がそれぞれ形成されている。したがって、それほど大きな操作力を加えることなく、電線挿入部4に対して操作用ノブ21を矢印A1の向きに回動させることが可能となっている。 However, in the voltage sensor 1 of this example, the force required to rotate the operation knob 21 with respect to the electric wire insertion portion 4 in the direction of the arrow A1 in the state where the engaging portions E3 and E4 are engaged is larger than the force required. The force required to rotate in the direction of arrow A2 is larger (in other words, the force required to rotate in the direction of arrow A1 is smaller than the force required to rotate in the direction of arrow A2). As described above, each convex portion and each concave portion of the engaging portions E3 and E4 are formed. Therefore, it is possible to rotate the operation knob 21 in the direction of the arrow A1 with respect to the electric wire insertion portion 4 without applying a large operating force.

また、上記のような電線挿入部4に対する操作用ノブ21の矢印A1の向きへの回動に伴って筒状部13が電線挿入部4に対して矢印B1の向きへさらに移動させられることにより、電極2が保持部本体11および筒状部13と共に矢印B1の向きに移動させられて、図9に示すように、電極2が被覆電線Xの絶縁被覆に接した状態となる。次いで、図10に示すように、電線挿入部4に対して操作用ノブ21を矢印A1の向きにさらに回動させることで電線挿入部4に対して電極2を矢印B1の向きにさらに移動させて、被覆電線Xに対して電極2の先端部2aを十分な押付け力で押し付けた状態とする。 Further, as the operation knob 21 rotates in the direction of the arrow A1 with respect to the electric wire insertion portion 4 as described above, the tubular portion 13 is further moved in the direction of the arrow B1 with respect to the electric wire insertion portion 4. The electrode 2 is moved in the direction of the arrow B1 together with the holding portion main body 11 and the tubular portion 13, so that the electrode 2 is in contact with the insulating coating of the coated electric wire X as shown in FIG. Next, as shown in FIG. 10, the operation knob 21 is further rotated in the direction of arrow A1 with respect to the electric wire insertion portion 4, so that the electrode 2 is further moved in the direction of arrow B1 with respect to the electric wire insertion portion 4. Then, the tip portion 2a of the electrode 2 is pressed against the covered electric wire X with a sufficient pressing force.

この場合、図9に示すように被覆電線Xの絶縁被覆に電極2が接した状態から、操作用ノブ21の矢印A2の向きへの回動に伴って筒状部13が矢印B1の向きに移動させられたときには、被覆電線Xに対する電極2の矢印B1の向きへの押付け力の増加に伴い、筒状部13に対して保持部本体11を矢印B1の向きに付勢しているコイルスプリング14が徐々に縮長させられる。この結果、電極2と一体化されている保持部本体11が筒状部13に対して矢印B2の向きへ相対的に後退させられる結果、被覆電線Xに対して電極2が過剰に大きな力で押し付けられた状態となるのが好適に回避される。 In this case, as shown in FIG. 9, from the state where the electrode 2 is in contact with the insulating coating of the coated electric wire X, the tubular portion 13 moves in the direction of the arrow B1 as the operation knob 21 rotates in the direction of the arrow A2. When moved, the coil spring urges the holding portion main body 11 against the tubular portion 13 in the direction of arrow B1 as the pressing force of the electrode 2 against the coated electric wire X increases in the direction of arrow B1. 14 is gradually shortened. As a result, the holding portion main body 11 integrated with the electrode 2 is retracted relative to the tubular portion 13 in the direction of the arrow B2, and as a result, the electrode 2 exerts an excessively large force with respect to the coated electric wire X. It is preferably avoided to be in a pressed state.

また、本例の電圧センサ1では、前述したように、電線挿入部4の内面における対向面S4が電線挿入部4の筒径方向において切欠き32aにおける先端部側の内縁部の一部と一直線状に連続するように形成されて電線接触部Pxが電線挿入部4に設けられている。これにより、電線挿入部4における切欠き32aの内縁部および対向面S4と、電極2における先端部2aの先端面S2との間に挟み込まれた被覆電線Xにおいて、弾性復帰が困難な程度に絶縁被覆が変形したり、断線(導線の接断)が生じたりする事態を招くことなく、電線挿入部4と電極2との間に被覆電線Xが挟み込まれた状態とすることができる。以上により、被覆電線Xの導線に対して電極2が好適状態で容量結合され、被覆電線Xに対する電圧センサ1の装着が完了する。 Further, in the voltage sensor 1 of this example, as described above, the facing surface S4 on the inner surface of the electric wire insertion portion 4 is aligned with a part of the inner edge portion on the tip end side of the notch 32a in the tubular radial direction of the electric wire insertion portion 4. The electric wire contact portion Px is provided in the electric wire insertion portion 4 so as to be continuous in a shape. As a result, the coated electric wire X sandwiched between the inner edge portion and the facing surface S4 of the notch 32a in the electric wire insertion portion 4 and the tip end surface S2 of the tip end portion 2a in the electrode 2 is insulated to such an extent that elastic recovery is difficult. The covered electric wire X can be sandwiched between the electric wire insertion portion 4 and the electrode 2 without causing a situation in which the coating is deformed or the wire is broken (connecting or disconnecting the conducting wire). As described above, the electrode 2 is capacitively coupled to the lead wire of the coated electric wire X in a suitable state, and the mounting of the voltage sensor 1 on the coated electric wire X is completed.

この場合、電圧センサ1への装着が完了したときには、係合部E4の各凹部に係合部E3の各凸部が十分に進入し、かつ係合部E3の各凹部に係合部E4の各凸部が十分に進入した状態で係合部E3,E4が係合した状態となり、電線挿入部4に対する操作用ノブ21の回動が規制された状態となる。これにより、電線挿入部4に対する操作用ノブ21の回動に伴って電線挿入部4に対して電極2、保持部本体11および筒状部13が矢印B2の向きで移動する事態、すなわち、被覆電線Xに対する電極2の押付け力が低下する事態が好適に回避される。続いて、信号ケーブル6を測定装置に接続することで測定装置に電圧センサ1を接続した後に、測定装置の図示しない操作部を操作することにより、測定処理を開始させる。なお、この種のセンサを使用した電圧の測定方法については当業者間において公知のため、詳細な説明を省略する。 In this case, when the mounting on the voltage sensor 1 is completed, each convex portion of the engaging portion E3 sufficiently enters each concave portion of the engaging portion E4, and the engaging portion E4 enters each concave portion of the engaging portion E3. The engaging portions E3 and E4 are engaged with each convex portion sufficiently inserted, and the rotation of the operation knob 21 with respect to the electric wire inserting portion 4 is restricted. As a result, the electrode 2, the holding portion main body 11 and the tubular portion 13 move in the direction of the arrow B2 with respect to the electric wire inserting portion 4 as the operation knob 21 rotates with respect to the electric wire inserting portion 4, that is, the coating. The situation in which the pressing force of the electrode 2 against the electric wire X is reduced is preferably avoided. Subsequently, after connecting the voltage sensor 1 to the measuring device by connecting the signal cable 6 to the measuring device, the measurement process is started by operating an operation unit (not shown) of the measuring device. Since a method for measuring voltage using this type of sensor is known among those skilled in the art, detailed description thereof will be omitted.

一方、被覆電線Xについての測定処理を再び実行する必要がなくなったときには、被覆電線Xから電圧センサ1を取り外す。この際には、図11に示すように、電線挿入部4に螺合させられている筒状部13に対してコイルスプリング22の付勢力に抗して操作用ノブ21を矢印B2の向きに移動させる(前述した「解除操作」の例)。これにより、係合部E3,E4の係合が解除されて、操作用ノブ21および筒状部13の電線挿入部4に対する回動規制が解除される。 On the other hand, when it is no longer necessary to execute the measurement process for the covered electric wire X again, the voltage sensor 1 is removed from the coated electric wire X. At this time, as shown in FIG. 11, the operation knob 21 is oriented in the direction of arrow B2 against the urging force of the coil spring 22 with respect to the tubular portion 13 screwed into the electric wire insertion portion 4. Move (example of "release operation" described above). As a result, the engagement portions E3 and E4 are disengaged, and the rotation restriction of the operation knob 21 and the tubular portion 13 with respect to the electric wire insertion portion 4 is released.

次いで、操作用ノブ21を矢印B2の向きに移動させた状態(コイルスプリング22を押し縮めた状態)を維持しつつ、電線挿入部4に対して操作用ノブ21を矢印A2の向きに回動させる。この際には、筒状部13が操作用ノブ21と共に電線挿入部4に対して矢印A2の向きに回動させられる。これにより、雌ネジ32bに対して雄ネジ13aが螺合させられている筒状部13が電線挿入部4に対して矢印B2の向きに移動させられると共に、筒状部13が装着されている保持部本体11が筒状部13と共に電線挿入部4に対して矢印B2の向きに移動させられる結果、保持部本体11と一体化されている電極2が電線挿入部4に対して矢印B2の向きに移動させられる。 Next, while maintaining the state in which the operation knob 21 is moved in the direction of arrow B2 (the state in which the coil spring 22 is compressed), the operation knob 21 is rotated in the direction of arrow A2 with respect to the electric wire insertion portion 4. Let me. At this time, the tubular portion 13 is rotated together with the operation knob 21 in the direction of the arrow A2 with respect to the electric wire insertion portion 4. As a result, the tubular portion 13 in which the male screw 13a is screwed with respect to the female screw 32b is moved in the direction of the arrow B2 with respect to the electric wire insertion portion 4, and the tubular portion 13 is mounted. As a result of the holding portion main body 11 being moved together with the tubular portion 13 in the direction of the arrow B2 with respect to the electric wire insertion portion 4, the electrode 2 integrated with the holding portion main body 11 is indicated by the arrow B2 with respect to the electric wire inserting portion 4. Can be moved in the direction.

引き続き、電線挿入部4に対して操作用ノブ21を矢印A2の向きへ十分に回動させることにより、図8に示すように、電極2が被覆電線X(絶縁被覆)から離間させられる。また、電線挿入部4に対して操作用ノブ21を矢印A2の向きへさらに回動させることにより、図7に示すように、電極2および保持部本体11の先端部が電線挿入部4の筒状部31内に収容された状態となり、かつ凸部11cが電線挿入部4内のストッパ5に当接して電線挿入部4に対する保持部本体11のさらなる移動が規制され、電極保持部3および電線挿入部4の分離が規制される。このような状態において、切欠き32a内の被覆電線Xを電線挿入部4の外に位置させるようにして、被覆電線Xおよび/または電圧センサ1を移動させる。以上により、被覆電線Xからの電圧センサ1の取り外しが完了する。 Subsequently, by sufficiently rotating the operation knob 21 with respect to the electric wire insertion portion 4 in the direction of the arrow A2, the electrode 2 is separated from the coated electric wire X (insulation coating) as shown in FIG. Further, by further rotating the operation knob 21 with respect to the electric wire insertion portion 4 in the direction of the arrow A2, as shown in FIG. 7, the tips of the electrode 2 and the holding portion main body 11 are formed into the cylinder of the electric wire insertion portion 4. It is in a state of being housed in the shaped portion 31, and the convex portion 11c abuts on the stopper 5 in the electric wire inserting portion 4 to restrict further movement of the holding portion main body 11 with respect to the electric wire inserting portion 4, and the electrode holding portion 3 and the electric wire are restricted. Separation of the insertion portion 4 is restricted. In such a state, the covered electric wire X and / or the voltage sensor 1 is moved so that the covered electric wire X in the notch 32a is located outside the electric wire insertion portion 4. As described above, the removal of the voltage sensor 1 from the covered electric wire X is completed.

このように、この電圧センサ1では、電極保持部3および電線挿入部4の間に配設されて電極保持部3に対する「筒長方向」への相対的な移動が可能な状態で電線挿入部4に固定されると共に、電極保持部3に対して電線挿入部4が予め規定された位置まで「離間方向」へ相対的に移動させられたときに電極保持部3の周面に設けられている凸部11cに当接して電極保持部3に対する電線挿入部4の「離間方向」への相対的な移動を規制するストッパ5を備えている。 As described above, in the voltage sensor 1, the electric wire insertion portion is arranged between the electrode holding portion 3 and the electric wire inserting portion 4 and can move relative to the electrode holding portion 3 in the “cylinder length direction”. It is fixed to 4 and is provided on the peripheral surface of the electrode holding portion 3 when the electric wire inserting portion 4 is relatively moved to a predetermined position with respect to the electrode holding portion 3 in the “separation direction”. A stopper 5 is provided that abuts on the convex portion 11c and regulates the relative movement of the electric wire insertion portion 4 with respect to the electrode holding portion 3 in the “separation direction”.

したがって、この電圧センサ1によれば、電線挿入部4に固定されているストッパ5に凸部11cが当接したときに、電極保持部3に対する電線挿入部4のさらなる移動が規制されるため、電線挿入部4に電極保持部3が挿入された状態を維持させて、電極保持部3および電線挿入部4の意図しない分離を好適に回避することができる。これにより、電極保持部3および電線挿入部4の分離に起因するいずれかの落下を確実に回避することができる。 Therefore, according to the voltage sensor 1, when the convex portion 11c comes into contact with the stopper 5 fixed to the electric wire inserting portion 4, further movement of the electric wire inserting portion 4 with respect to the electrode holding portion 3 is restricted. It is possible to maintain the state in which the electrode holding portion 3 is inserted into the electric wire inserting portion 4 and preferably avoid unintended separation of the electrode holding portion 3 and the electric wire inserting portion 4. As a result, it is possible to reliably avoid any of the drops caused by the separation of the electrode holding portion 3 and the electric wire inserting portion 4.

また、この電圧センサ1によれば、ストッパ5を環状に形成すると共に電線挿入部4内に圧入して電線挿入部4に固定したことにより、接着やネジ止めなどの固定方法で固定する構成とは異なり、電線挿入部4に対してストッパ5を容易に固定することができるため、その製造コストを十分に低減することができる。 Further, according to the voltage sensor 1, the stopper 5 is formed in an annular shape and is press-fitted into the electric wire insertion portion 4 and fixed to the electric wire insertion portion 4, so that the stopper 5 is fixed by a fixing method such as adhesion or screwing. However, since the stopper 5 can be easily fixed to the electric wire insertion portion 4, the manufacturing cost thereof can be sufficiently reduced.

さらに、この電圧センサ1では、電極保持部3が、「移動規制用凸部」としての機能を有する凸部(本例では、凸部11c)が1つだけ設けられ、ストッパ5が、C字状に形成されると共に、ストッパ5の周方向における一端部と他端部との間の隙間における周方向の長さが、電線挿入部4に圧入されていない状態において電極保持部3(保持部本体11)の周方向に沿った凸部11cの長さ以上となり、かつ電線挿入部4に圧入された状態において電極保持部3(保持部本体11)の周方向に沿った凸部11cの長さを下回るように弾性変形可能に構成されている。 Further, in the voltage sensor 1, the electrode holding portion 3 is provided with only one convex portion (convex portion 11c in this example) having a function as a “convex portion for movement regulation”, and the stopper 5 has a C-shape. The electrode holding portion 3 (holding portion) is formed in a shape and the length in the circumferential direction in the gap between one end portion and the other end portion in the circumferential direction of the stopper 5 is not press-fitted into the electric wire insertion portion 4. The length of the convex portion 11c along the circumferential direction of the main body 11) is longer than the length of the convex portion 11c along the circumferential direction of the electrode holding portion 3 (holding portion main body 11) in a state of being press-fitted into the electric wire insertion portion 4. It is configured to be elastically deformable so as to be less than the above.

したがって、この電圧センサ1によれば、組立てに際して、ストッパ5の周方向における一端部および他端部の間の隙間を凸部11cが通過するように保持部本体11に対してストッパ5を相対的に移動させてストッパ5を電極保持部3(保持部本体11)における凸部11cよりも基端部側に位置させ、その後に、凸部11cに対して電極保持部3(保持部本体11)の筒長方向にストッパ5の隙間が存在しない状態となるようにストッパ5を回動させた状態で、電線挿入部4に電極保持部3を挿入してストッパ5を電線挿入部4内に固定することで、ストッパ5を確実かつ容易に電線挿入部4内に固定することができると共に、電極保持部3に対して電線挿入部4を「離間方向」へ相対的に移動させた際に凸部11cをストッパ5に対して確実に当接させて電極保持部3および電線挿入部4の意図しない分離を確実に回避することができる。 Therefore, according to this voltage sensor 1, when assembling, the stopper 5 is relative to the holding portion main body 11 so that the convex portion 11c passes through the gap between the one end portion and the other end portion in the circumferential direction of the stopper 5. To position the stopper 5 on the base end side of the electrode holding portion 3 (holding portion main body 11) with respect to the convex portion 11c, and then the electrode holding portion 3 (holding portion main body 11) with respect to the convex portion 11c. With the stopper 5 rotated so that there is no gap in the stopper 5 in the cylinder length direction, the electrode holding portion 3 is inserted into the wire insertion portion 4 and the stopper 5 is fixed in the wire insertion portion 4. By doing so, the stopper 5 can be securely and easily fixed in the electric wire insertion portion 4, and is convex when the electric wire insertion portion 4 is relatively moved in the "separation direction" with respect to the electrode holding portion 3. The portion 11c can be reliably brought into contact with the stopper 5 to reliably avoid unintended separation of the electrode holding portion 3 and the wire insertion portion 4.

また、この電圧センサ1では、電線挿入部4が、「筒長方向」の一端部が電極保持部3およびストッパ5を挿入可能に開口され、かつ「筒長方向」の他端部が閉塞されると共に、電線挿入部4の内面において電極保持部3によって保持された電極の先端面S2と対向させられる対向面S4が電線挿入部4の筒径方向において切欠きにおける他端部の側の内縁部の一部と一直線状に連続するように形成されて電線接触部Pxが設けられている。 Further, in the voltage sensor 1, one end of the electric wire insertion portion 4 in the "cylinder length direction" is opened so that the electrode holding portion 3 and the stopper 5 can be inserted, and the other end portion in the "cylinder length direction" is closed. At the same time, the facing surface S4 facing the tip surface S2 of the electrode held by the electrode holding portion 3 on the inner surface of the electric wire inserting portion 4 is the inner edge on the other end side of the notch in the tubular radial direction of the electric wire inserting portion 4. The electric wire contact portion Px is provided so as to be continuous with a part of the portion in a straight line.

したがって、この電圧センサ1によれば、電線挿入部4における切欠き32aの内縁部および対向面S4と、電極2における先端部2aの先端面S2との間に挟み込まれた被覆電線Xにおいて、弾性復帰が困難な程度に絶縁被覆が変形したり、断線(導線の接断)が生じたりする事態を招くことなく、電線挿入部4と電極2との間に被覆電線Xが挟み込まれた状態とすることができるため、被覆電線Xを傷付けることなく確実に保持する(被覆電線Xに対して電圧センサ1を確実に装着する)ことができる。 Therefore, according to the voltage sensor 1, the covered electric wire X sandwiched between the inner edge portion and the facing surface S4 of the notch 32a in the electric wire insertion portion 4 and the tip end surface S2 of the tip end portion 2a in the electrode 2 is elastic. A state in which the covered electric wire X is sandwiched between the electric wire insertion portion 4 and the electrode 2 without causing a situation in which the insulating coating is deformed to the extent that it is difficult to recover or the wire is broken (connecting the lead wire). Therefore, the covered electric wire X can be reliably held without being damaged (the voltage sensor 1 can be reliably attached to the coated electric wire X).

さらに、この電圧センサ1によれば、切欠きにおける他端部の側の電線挿入部4の「周方向」に沿った開口幅が一端部から他端部に向かうほど狭くなるように切欠きにおける他端部の側を円弧状に形成すると共に、切欠きの内縁部における他端部の側の頂部Ppに電線接触部Pxを設けて電線挿入部4を構成したことにより、切欠き32a内に挿入した被覆電線Xを確実に電線接触部Pxに対して接触させた状態とすることができる。 Further, according to the voltage sensor 1, the notch is provided so that the opening width of the wire insertion portion 4 on the other end side of the notch along the "circumferential direction" becomes narrower from one end to the other end. The other end side is formed in an arc shape, and the electric wire contact portion Px is provided on the top portion Pp of the other end portion side of the inner edge portion of the notch to form the electric wire insertion portion 4, thereby forming the electric wire insertion portion 4 in the notch 32a. It is possible to ensure that the inserted covered electric wire X is in contact with the electric wire contact portion Px.

なお、「センサ」の構成は、上記の電圧センサ1の構成の例に限定されない。例えば、電線挿入部4に対して電極保持部3を「接近方向」および「離間方向」に移動させる際に、電線挿入部4に対する操作用ノブ21の回動操作を行う構成の電圧センサ1を例に挙げて説明したが、このような構成に代えて、「電線挿入部」に対して「電極保持部」を「接近方向」および「離間方向」に相対的にスライドさせる操作によって「被覆電線」に対する装着や取り外しを行うことが可能な構成を採用することもできる。 The configuration of the "sensor" is not limited to the above-mentioned example of the configuration of the voltage sensor 1. For example, a voltage sensor 1 having a configuration in which an operation knob 21 is rotated with respect to the electric wire insertion portion 4 when the electrode holding portion 3 is moved with respect to the electric wire insertion portion 4 in the “approaching direction” and the “separating direction”. As described by giving an example, instead of such a configuration, the "covered electric wire" is operated by sliding the "electrode holding portion" relative to the "electric wire insertion portion" in the "approaching direction" and the "separating direction". It is also possible to adopt a configuration that can be attached to and detached from.

具体的には、図12〜14に示す電圧センサ1Aは、「センサ」の他の一例であって、前述の電圧センサ1における電極保持部3および電線挿入部4に代えて、「電極保持部」の他の一例である電極保持部3A、および「電線挿入部」の他の一例である「電線挿入部4A」を備えて構成されている。なお、この電圧センサ1Aにおいて電圧センサ1の各構成要素と同様の構成要素については、同一の符号を付して重複する説明を省略する。 Specifically, the voltage sensor 1A shown in FIGS. 12 to 14 is another example of the “sensor”, and instead of the electrode holding portion 3 and the electric wire inserting portion 4 in the voltage sensor 1 described above, the “electrode holding portion” is used. The electrode holding portion 3A, which is another example of the above, and the “electric wire insertion portion 4A”, which is another example of the “electric wire insertion portion”, are provided. In the voltage sensor 1A, the same components as the components of the voltage sensor 1 are designated by the same reference numerals, and duplicate description will be omitted.

電極保持部3Aは、一例として、保持部本体51および絶縁体12a,12bを備えている。保持部本体51は、電極2を挿入可能な筒状に形成されると共に、先端部側の外径が電線挿入部4Aにおける先端部側の内径より僅かに小径で、かつ基端部側の外径が電線挿入部4Aにおける基端部側の内径より僅かに小径の筒状(一例として円筒状)に形成されて、筒長方向の中央部に段部51aが設けられている。また、保持部本体51には、前述の電圧センサ1における電極保持部3の保持部本体11と同様に「移動規制用凸部」としての凸部11cが先端部側の周面に形成されている。さらに、保持部本体51には、後述するように電線挿入部4Aに形成されている凸部61aが係合可能な溝部51bが基端部側の周面に形成されている。 As an example, the electrode holding portion 3A includes a holding portion main body 51 and insulators 12a and 12b. The holding portion main body 51 is formed in a cylindrical shape into which the electrode 2 can be inserted, and the outer diameter on the tip end side is slightly smaller than the inner diameter on the tip end side in the wire insertion portion 4A, and the outer diameter on the base end side is outside. The diameter is formed in a tubular shape (cylindrical shape as an example) slightly smaller than the inner diameter on the base end side of the electric wire insertion portion 4A, and a step portion 51a is provided at the central portion in the tubular length direction. Further, the holding portion main body 51 is formed with a convex portion 11c as a "convex portion for movement regulation" on the peripheral surface on the tip end side, similarly to the holding portion main body 11 of the electrode holding portion 3 in the voltage sensor 1 described above. There is. Further, the holding portion main body 51 is formed with a groove portion 51b on the peripheral surface on the base end portion side to which the convex portion 61a formed in the electric wire insertion portion 4A can be engaged, as will be described later.

電線挿入部4Aは、電極保持部3Aの保持部本体51を挿入可能な筒状(本例では円筒状)に形成されている。この電線挿入部4Aは、「周壁」を構成する筒状部61の基端部が開口されて(「筒長方向の一端部が開口され」との構成の他の一例)電極保持部3Aを嵌入可能に構成されると共に、筒状部61の先端部が閉塞されている(「筒長方向の他端部が閉塞され」との構成の他の一例)。また、筒状部61の先端部側には、切欠き32aやスリット32cが設けられている。さらに、筒状部61の基端部側における内周面には、電極保持部3Aの保持部本体51に形成された溝部51bに係合可能な凸部61aが設けられている。また、電線挿入部4Aの筒状部61には、ストッパ5が圧入されて固定されている。 The electric wire insertion portion 4A is formed in a tubular shape (cylindrical shape in this example) into which the holding portion main body 51 of the electrode holding portion 3A can be inserted. The electric wire insertion portion 4A has an electrode holding portion 3A in which the base end portion of the tubular portion 61 constituting the “peripheral wall” is opened (another example of the configuration in which “one end portion in the tubular length direction is opened”). It is configured so that it can be fitted, and the tip end portion of the tubular portion 61 is closed (another example of the configuration in which the other end portion in the tubular length direction is closed). Further, a notch 32a and a slit 32c are provided on the tip end side of the tubular portion 61. Further, a convex portion 61a that can be engaged with the groove portion 51b formed in the holding portion main body 51 of the electrode holding portion 3A is provided on the inner peripheral surface of the tubular portion 61 on the proximal end side. Further, a stopper 5 is press-fitted and fixed to the tubular portion 61 of the electric wire insertion portion 4A.

この電圧センサ1Aの組立てに際しては、まず、電極2および絶縁体12a,12bを保持部本体51内に挿入してこれらを一体化させる。次いで、電極2の基端部2bに信号ケーブル6の芯線を半田付けして電極2に信号ケーブル6を固定すると共に、信号ケーブル6を挿通させたブッシュ6aを保持部本体51の基端部に固定する。 When assembling the voltage sensor 1A, first, the electrodes 2 and the insulators 12a and 12b are inserted into the holding portion main body 51 to integrate them. Next, the core wire of the signal cable 6 is soldered to the base end portion 2b of the electrode 2, the signal cable 6 is fixed to the electrode 2, and the bush 6a through which the signal cable 6 is inserted is attached to the base end portion of the holding portion main body 51. Fix it.

続いて、電線挿入部4Aに対する電極保持部3Aの取り付け、および電線挿入部4A内へのストッパ5の固定を行う。具体的には、まず、保持部本体51の先端部にストッパ5を取り付け、次いで、ストッパ5の周方向における一端部および他端部の間の隙間を凸部11cが通過するように保持部本体51に対してストッパ5を相対的に移動させることにより、凸部11aおよび段部51aの間にストッパ5を位置させる。続いて、保持部本体51に対してストッパ5を180度回動させ、凸部11cに対して保持部本体11の筒長方向にストッパ5の隙間が存在しない状態とする。 Subsequently, the electrode holding portion 3A is attached to the electric wire inserting portion 4A, and the stopper 5 is fixed in the electric wire inserting portion 4A. Specifically, first, the stopper 5 is attached to the tip of the holding portion main body 51, and then the holding portion main body is such that the convex portion 11c passes through the gap between one end portion and the other end portion in the circumferential direction of the stopper 5. By moving the stopper 5 relative to the 51, the stopper 5 is positioned between the convex portion 11a and the step portion 51a. Subsequently, the stopper 5 is rotated 180 degrees with respect to the holding portion main body 51 so that there is no gap between the stopper 5 in the cylinder length direction of the holding portion main body 11 with respect to the convex portion 11c.

次いで、電線挿入部4Aにおける基端部側の開口部から保持部本体51の先端部を挿入し、電線挿入部4Aに対して電極保持部3A(保持部本体51)を各図の矢印B1の向きで押し込む。この際に、保持部本体51の凸部11aおよび段部51aの間に位置させられているストッパ5が電線挿入部4Aにおける筒状部61の基端部に接した状態から電線挿入部4Aに対して電極保持部3A(保持部本体51)をさらに押し込んだときには、ストッパ5が縮径方向で弾性変形して筒状部61に進入させられる。また、筒状部61内に進入させられたストッパ5は、電線挿入部4Aに対して電極保持部3A(保持部本体51)がさらに押し込まれた際に、段部51aに押されるようにして筒状部61内を先端部側に向けて移動させられる。 Next, the tip of the holding portion main body 51 is inserted from the opening on the base end side of the electric wire inserting portion 4A, and the electrode holding portion 3A (holding portion main body 51) is inserted into the electric wire inserting portion 4A with the arrow B1 in each figure. Push in in the direction. At this time, the stopper 5 located between the convex portion 11a and the step portion 51a of the holding portion main body 51 is in contact with the base end portion of the tubular portion 61 of the electric wire insertion portion 4A to the electric wire insertion portion 4A. On the other hand, when the electrode holding portion 3A (holding portion main body 51) is further pushed in, the stopper 5 is elastically deformed in the radial direction and is made to enter the tubular portion 61. Further, the stopper 5 inserted into the tubular portion 61 is pushed by the step portion 51a when the electrode holding portion 3A (holding portion main body 51) is further pushed against the electric wire insertion portion 4A. The inside of the tubular portion 61 can be moved toward the tip end side.

続いて、電線挿入部4Aに対して電極保持部3A(保持部本体51)をさらに押し込むことで、電線挿入部4Aにおけるスリット32cの後端に凸部11cが位置したときには、電線挿入部4Aに対して保持部本体51を相対的に回動させて凸部11cがスリット32c内に進入可能な状態とする。 Subsequently, by further pushing the electrode holding portion 3A (holding portion main body 51) into the electric wire inserting portion 4A, when the convex portion 11c is located at the rear end of the slit 32c in the electric wire inserting portion 4A, the convex portion 11c is inserted into the electric wire inserting portion 4A. On the other hand, the holding portion main body 51 is relatively rotated so that the convex portion 11c can enter the slit 32c.

また、凸部11cをスリット32c内に進入させた状態から、電線挿入部4Aに対して電極保持部3Aをさらに押し込んだときには、図14に示すように、保持部本体51の溝部51bに筒状部61の凸部61aが係合した状態となる。この場合、組立て作業時のこの時点では、電線挿入部4Aの切欠き32aに被覆電線Xが挿入されていないが、本例の電圧センサ1Aでは、同図に示すように、電圧の検出対象の被覆電線Xを電極2の先端面S2と電線挿入部4Aの対向面S4との間に挟み込んだ状態(被覆電線Xに電圧センサ1Aを装着した状態)において溝部51bに凸部61aが係合した状態となるように、保持部本体51における溝部51bの形成位置、および筒状部61における凸部61aの形成位置が規定されている。 Further, when the electrode holding portion 3A is further pushed into the electric wire inserting portion 4A from the state where the convex portion 11c is inserted into the slit 32c, as shown in FIG. 14, the groove portion 51b of the holding portion main body 51 has a tubular shape. The convex portion 61a of the portion 61 is in an engaged state. In this case, the covered electric wire X is not inserted into the notch 32a of the electric wire insertion portion 4A at this time during the assembly work, but in the voltage sensor 1A of this example, as shown in the figure, the voltage is detected. The convex portion 61a was engaged with the groove 51b in a state where the coated electric wire X was sandwiched between the tip surface S2 of the electrode 2 and the facing surface S4 of the electric wire insertion portion 4A (the state where the voltage sensor 1A was attached to the coated electric wire X). The formation position of the groove portion 51b in the holding portion main body 51 and the formation position of the convex portion 61a in the tubular portion 61 are defined so as to be in a state.

次いで、組立て作業時のこの時点では、一例として、電線挿入部4の対向面S4に電極2の先端面S2が面的に接した状態となるまで電線挿入部4Aに対して電極保持部3(保持部本体51)をさらに押し込む。この際には、段部51aによって押されたストッパ5が電線挿入部4Aの筒状部61内における固定位置(図12,14におけるストッパ5の位置)に位置させられる(電線挿入部4A内にストッパ5を圧入した状態の一例)。これにより、ストッパ5の弾性復帰力によって電線挿入部4Aの内側にストッパ5が固定された状態となり、電圧センサ1Aの組立てが完了する。 Next, at this point in the assembly work, as an example, the electrode holding portion 3 (with respect to the wire inserting portion 4A until the tip surface S2 of the electrode 2 is in surface contact with the facing surface S4 of the wire inserting portion 4 Further push the holding portion main body 51). At this time, the stopper 5 pushed by the step portion 51a is positioned at a fixed position (the position of the stopper 5 in FIGS. 12 and 14) in the tubular portion 61 of the electric wire insertion portion 4A (in the electric wire insertion portion 4A). An example of a state in which the stopper 5 is press-fitted). As a result, the stopper 5 is fixed inside the electric wire insertion portion 4A by the elastic return force of the stopper 5, and the assembly of the voltage sensor 1A is completed.

一方、この電圧センサ1Aを使用した電圧の検出に際しては被覆電線Xに電圧センサ1Aを装着する。この際に、被覆電線Xに対して非装着状態の電圧センサ1Aにおいて電極2の先端部や保持部本体51における先端部側が電線挿入部4Aにおける切欠き32aの形成部位に位置した状態(保持部本体51の周面を切欠き32aから視認できる状態)となっているときには、電極2や保持部本体51の先端部を電線挿入部4Aの筒状部61内に収容する。具体的には、一例として、各図に示す矢印B2の向きで電線挿入部4Aに対して電極保持部3Aを移動させることにより、保持部本体51と一体化されている電極2を電線挿入部4Aに対して矢印B2の向きに移動させる。これにより、図12に示すように、電極2および保持部本体51の先端部が電線挿入部4Aの筒状部61内に収容された状態(保持部本体51の周面を視認できない状態)となる。 On the other hand, when detecting the voltage using the voltage sensor 1A, the voltage sensor 1A is attached to the coated electric wire X. At this time, in the voltage sensor 1A not attached to the covered electric wire X, the tip end portion of the electrode 2 and the tip end portion side of the holding portion main body 51 are located at the formation portion of the notch 32a in the electric wire insertion portion 4A (holding portion). When the peripheral surface of the main body 51 is visible from the notch 32a), the electrode 2 and the tip of the holding portion main body 51 are housed in the tubular portion 61 of the electric wire insertion portion 4A. Specifically, as an example, by moving the electrode holding portion 3A with respect to the electric wire inserting portion 4A in the direction of the arrow B2 shown in each figure, the electrode 2 integrated with the holding portion main body 51 is inserted into the electric wire inserting portion. Move in the direction of arrow B2 with respect to 4A. As a result, as shown in FIG. 12, the electrode 2 and the tip of the holding portion main body 51 are housed in the tubular portion 61 of the electric wire insertion portion 4A (the peripheral surface of the holding portion main body 51 cannot be visually recognized). Become.

この場合、本例の電圧センサ1Aでは、電極2および保持部本体51の先端部が電線挿入部4Aの筒状部61内に収容された状態において、電線挿入部4A内に固定されているストッパ5の端面に保持部本体51の凸部11cが当接した状態となるように構成されている。これにより、この電圧センサ1Aでは、ストッパ5が固定されている電線挿入部4Aに対する保持部本体51の矢印B2の向きへのさらなる移動が規制されるため、電線挿入部4Aに対して保持部本体51をどの程度移動させたかを把握していなくても、保持部本体51が電線挿入部4の筒状部61に挿入された状態、すなわち、電極保持部3A(保持部本体51)と電線挿入部4A(筒状部61)とが一体化した状態が維持される。したがって、この電圧センサ1Aでは、電極保持部3Aおよび電線挿入部4Aの意図しない分離に起因するいずれかの落下が好適に回避される。 In this case, in the voltage sensor 1A of this example, the stopper is fixed in the wire insertion portion 4A in a state where the electrode 2 and the tip of the holding portion main body 51 are housed in the tubular portion 61 of the wire insertion portion 4A. It is configured so that the convex portion 11c of the holding portion main body 51 is in contact with the end surface of 5. As a result, in this voltage sensor 1A, further movement of the holding portion main body 51 in the direction of the arrow B2 with respect to the electric wire inserting portion 4A to which the stopper 5 is fixed is restricted, so that the holding portion main body is restricted with respect to the electric wire inserting portion 4A. Even if it is not known how much the 51 has been moved, the holding portion main body 51 is inserted into the tubular portion 61 of the electric wire inserting portion 4, that is, the electrode holding portion 3A (holding portion main body 51) and the electric wire are inserted. The state of being integrated with the portion 4A (cylindrical portion 61) is maintained. Therefore, in this voltage sensor 1A, any drop due to unintended separation of the electrode holding portion 3A and the electric wire inserting portion 4A is preferably avoided.

次いで、電線挿入部4Aの切欠き32aに被覆電線Xを挿入した後に、被覆電線Xの絶縁被覆に電極2を当接させて電極2を被覆電線Xの導線と容量結合させる。具体的には、一例として、切欠き32aに被覆電線Xが挿入された状態の電線挿入部4Aに対して矢印B1の向きで電極保持部3Aを移動させることにより、保持部本体51と一体化されている電極2を電線挿入部4Aに対して矢印B1の向きに移動させる。この際に、図14に示すように、被覆電線Xの絶縁被覆が電線挿入部4の対向面S4および電極2の先端面S2の間に挟まれて被覆電線Xに対して対向面S4および先端面S2が十分な押付け力で押し付けられた状態となるまで電線挿入部4Aに対して電極保持部3Aを移動させたときには、電線挿入部4における筒状部61の内周面に形成された凸部61aが電極保持部3における保持部本体51の外周面に形成された溝部51bに係合させられる。これにより、筒状部61に対する保持部本体51の筒長方法に沿った移動、すなわち、電極保持部3Aによって保持された電極2の電線挿入部4Aに対する筒長方法に沿った移動が規制された状態となる。 Next, after inserting the coated electric wire X into the notch 32a of the electric wire insertion portion 4A, the electrode 2 is brought into contact with the insulating coating of the coated electric wire X to capacitively couple the electrode 2 with the conducting wire of the coated electric wire X. Specifically, as an example, the electrode holding portion 3A is moved in the direction of the arrow B1 with respect to the electric wire inserting portion 4A in which the coated electric wire X is inserted into the notch 32a, thereby being integrated with the holding portion main body 51. The electrode 2 is moved with respect to the electric wire insertion portion 4A in the direction of the arrow B1. At this time, as shown in FIG. 14, the insulating coating of the covered electric wire X is sandwiched between the facing surface S4 of the electric wire insertion portion 4 and the tip surface S2 of the electrode 2, and the facing surface S4 and the tip with respect to the coated electric wire X. When the electrode holding portion 3A is moved with respect to the electric wire inserting portion 4A until the surface S2 is pressed with a sufficient pressing force, the convex shape formed on the inner peripheral surface of the tubular portion 61 of the electric wire inserting portion 4. The portion 61a is engaged with the groove portion 51b formed on the outer peripheral surface of the holding portion main body 51 in the electrode holding portion 3. As a result, the movement of the holding portion main body 51 with respect to the tubular portion 61 along the tubular length method, that is, the movement of the electrode 2 held by the electrode holding portion 3A with respect to the electric wire insertion portion 4A is restricted. It becomes a state.

また、本例の電圧センサ1Aでは、前述した電圧センサ1と同様にして、電線挿入部4Aの内面における対向面S4が電線挿入部4Aの筒径方向において切欠き32aにおける先端部側の内縁部の一部と一直線状に連続するように形成され、切欠き32aに挿入された被覆電線Xが電線挿入部4Aに対して径方向に沿って一直線状に接する電線接触部Pxが電線挿入部4Aに設けられている。これにより、電線挿入部4Aにおける切欠き32aの内縁部および対向面S4と、電極2における先端部2aの先端面S2との間に挟み込まれた被覆電線Xにおいて、弾性復帰が困難な程度に絶縁被覆が変形したり、断線(導線の接断)が生じたりする事態を招くことなく、電線挿入部4Aと電極2との間に被覆電線Xが挟み込まれた状態とすることができる。以上により、被覆電線Xの導線に対して電極2が好適状態で容量結合され、被覆電線Xに対する電圧センサ1Aの装着が完了する。 Further, in the voltage sensor 1A of this example, similarly to the voltage sensor 1 described above, the facing surface S4 on the inner surface of the electric wire insertion portion 4A is the inner edge portion of the notch 32a on the tip end side in the tubular radial direction of the electric wire insertion portion 4A. The wire contact portion Px, which is formed so as to be continuous with a part of the wire in a straight line and in which the covered electric wire X inserted in the notch 32a is in linear contact with the wire insertion portion 4A along the radial direction, is the wire insertion portion 4A. It is provided in. As a result, the coated electric wire X sandwiched between the inner edge portion and the facing surface S4 of the notch 32a in the electric wire insertion portion 4A and the tip end surface S2 of the tip end portion 2a in the electrode 2 is insulated to such an extent that elastic recovery is difficult. The covered electric wire X can be sandwiched between the electric wire insertion portion 4A and the electrode 2 without causing a situation in which the coating is deformed or the wire is broken (connecting or disconnecting the conducting wire). As described above, the electrode 2 is capacitively coupled to the lead wire of the covered electric wire X in a suitable state, and the mounting of the voltage sensor 1A on the coated electric wire X is completed.

続いて、信号ケーブル6を測定装置に接続することで測定装置に電圧センサ1Aを接続した後に、測定装置の図示しない操作部を操作することにより、測定処理を開始させる。なお、この種のセンサを使用した電圧の測定方法については当業者間において公知のため、詳細な説明を省略する。 Subsequently, after connecting the voltage sensor 1A to the measuring device by connecting the signal cable 6 to the measuring device, the measurement process is started by operating an operation unit (not shown) of the measuring device. Since a method for measuring voltage using this type of sensor is known among those skilled in the art, detailed description thereof will be omitted.

一方、被覆電線Xについての測定処理を再び実行する必要がなくなったときには、被覆電線Xから電圧センサ1Aを取り外す。具体的には、図14に示す矢印B2の向きで電線挿入部4Aに対して電極保持部3Aを移動させる。この際には、電線挿入部4A(筒状部61)の凸部61aが電極保持部3(保持部本体51)の溝部51bに係合した状態となっているため、十分な力で電線挿入部4Aに対して電極保持部3Aを移動させることで溝部51bに対する凸部61aの係合を解除する。また、電線挿入部4Aに対して電極保持部3Aを矢印B2の向きで移動させたときには、切欠き32aに挿入された被覆電線Xに対して保持部本体51と一体化されている電極2が電線挿入部4Aに対して矢印B2の向きに移動させられる結果、電極2が被覆電線X(絶縁被覆)から離間させられる。 On the other hand, when it is no longer necessary to execute the measurement process for the covered electric wire X again, the voltage sensor 1A is removed from the coated electric wire X. Specifically, the electrode holding portion 3A is moved with respect to the electric wire inserting portion 4A in the direction of the arrow B2 shown in FIG. At this time, since the convex portion 61a of the electric wire insertion portion 4A (cylindrical portion 61) is engaged with the groove portion 51b of the electrode holding portion 3 (holding portion main body 51), the electric wire is inserted with sufficient force. By moving the electrode holding portion 3A with respect to the portion 4A, the engagement of the convex portion 61a with the groove portion 51b is released. Further, when the electrode holding portion 3A is moved with respect to the electric wire inserting portion 4A in the direction of the arrow B2, the electrode 2 integrated with the holding portion main body 51 is provided with respect to the covered electric wire X inserted into the notch 32a. As a result of being moved in the direction of the arrow B2 with respect to the electric wire insertion portion 4A, the electrode 2 is separated from the coated electric wire X (insulation coating).

さらに、電線挿入部4Aに対して電極保持部3Aを矢印B2の向きへさらに移動させたときには、図12に示すように、電極2および保持部本体51の先端部が電線挿入部4Aの筒状部61内に収容された状態となり、かつ凸部11cが電線挿入部4A内のストッパ5に当接して電線挿入部4Aに対する保持部本体51のさらなる移動が規制されて電極保持部3Aおよび電線挿入部4Aの分離が規制された状態となる。このような状態において、切欠き32a内の被覆電線Xを電線挿入部4Aの外に位置させるようにして、被覆電線Xおよび/または電圧センサ1Aを移動させる。以上により、被覆電線Xからの電圧センサ1Aの取り外しが完了する。 Further, when the electrode holding portion 3A is further moved in the direction of the arrow B2 with respect to the electric wire inserting portion 4A, as shown in FIG. 12, the tip portions of the electrode 2 and the holding portion main body 51 have a tubular shape of the electric wire inserting portion 4A. It is in a state of being housed in the portion 61, and the convex portion 11c abuts on the stopper 5 in the electric wire inserting portion 4A, and further movement of the holding portion main body 51 with respect to the electric wire inserting portion 4A is restricted, and the electrode holding portion 3A and the electric wire are inserted. The separation of part 4A is regulated. In such a state, the covered electric wire X and / or the voltage sensor 1A is moved so that the covered electric wire X in the notch 32a is located outside the electric wire insertion portion 4A. With the above, the removal of the voltage sensor 1A from the covered electric wire X is completed.

このように、この電圧センサ1Aでは、電極保持部3Aおよび電線挿入部4Aの間に配設されて電極保持部3Aに対する「筒長方向」への相対的な移動が可能な状態で電線挿入部4Aに固定されると共に、電極保持部3Aに対して電線挿入部4Aが予め規定された位置まで「離間方向」へ相対的に移動させられたときに電極保持部3Aの周面に設けられている凸部11cに当接して電極保持部3Aに対する電線挿入部4Aの「離間方向」への相対的な移動を規制するストッパ5を備えている。 As described above, in the voltage sensor 1A, the electric wire insertion portion is arranged between the electrode holding portion 3A and the electric wire inserting portion 4A and can be moved relative to the electrode holding portion 3A in the "cylinder length direction". It is fixed to 4A and is provided on the peripheral surface of the electrode holding portion 3A when the electric wire inserting portion 4A is relatively moved to a predetermined position with respect to the electrode holding portion 3A in the "separation direction". A stopper 5 is provided that abuts on the convex portion 11c and regulates the relative movement of the electric wire insertion portion 4A with respect to the electrode holding portion 3A in the “separation direction”.

したがって、この電圧センサ1Aによれば、電線挿入部4Aに固定されているストッパ5に凸部11cが当接したときに、電極保持部3Aに対する電線挿入部4Aのさらなる移動が規制されるため、電線挿入部4Aに電極保持部3Aが挿入された状態を維持させて、電極保持部3Aおよび電線挿入部4Aの意図しない分離を好適に回避することができる。これにより、電極保持部3Aおよび電線挿入部4Aの分離に起因するいずれかの落下を確実に回避することができる。 Therefore, according to this voltage sensor 1A, when the convex portion 11c comes into contact with the stopper 5 fixed to the electric wire insertion portion 4A, further movement of the electric wire insertion portion 4A with respect to the electrode holding portion 3A is restricted. The state in which the electrode holding portion 3A is inserted into the electric wire inserting portion 4A can be maintained, and unintended separation of the electrode holding portion 3A and the electric wire inserting portion 4A can be preferably avoided. As a result, it is possible to reliably avoid any of the drops caused by the separation of the electrode holding portion 3A and the electric wire inserting portion 4A.

また、この電圧センサ1Aによれば、ストッパ5を環状に形成すると共に電線挿入部4A内に圧入して電線挿入部4Aに固定したことにより、接着やネジ止めなどの固定方法で固定する構成とは異なり、電線挿入部4Aに対してストッパ5を容易に固定することができるため、その製造コストを十分に低減することができる。 Further, according to this voltage sensor 1A, the stopper 5 is formed in an annular shape and is press-fitted into the electric wire insertion portion 4A and fixed to the electric wire insertion portion 4A, so that the stopper 5 is fixed by a fixing method such as adhesion or screwing. However, since the stopper 5 can be easily fixed to the electric wire insertion portion 4A, the manufacturing cost thereof can be sufficiently reduced.

さらに、この電圧センサ1Aでは、電極保持部3Aが、「移動規制用凸部」としての機能を有する凸部(本例では、凸部11c)が1つだけ設けられ、ストッパ5が、C字状に形成されると共に、ストッパ5の周方向における一端部と他端部との間の隙間における周方向の長さが、電線挿入部4Aに圧入されていない状態において電極保持部3A(保持部本体51)の周方向に沿った凸部11cの長さ以上となり、かつ電線挿入部4Aに圧入された状態において電極保持部3A(保持部本体51)の周方向に沿った凸部11cの長さを下回るように弾性変形可能に構成されている。 Further, in the voltage sensor 1A, the electrode holding portion 3A is provided with only one convex portion (convex portion 11c in this example) having a function as a “convex portion for movement regulation”, and the stopper 5 is C-shaped. The electrode holding portion 3A (holding portion) is formed in a shape and the length in the circumferential direction in the gap between one end portion and the other end portion in the circumferential direction of the stopper 5 is not press-fitted into the wire insertion portion 4A. The length of the convex portion 11c along the circumferential direction of the main body 51) is longer than the length of the convex portion 11c along the circumferential direction of the electrode holding portion 3A (holding portion main body 51) in a state of being press-fitted into the electric wire insertion portion 4A. It is configured to be elastically deformable so as to be less than the above.

したがって、この電圧センサ1Aによれば、組立てに際して、ストッパ5の周方向における一端部および他端部の間の隙間を凸部11cが通過するように保持部本体51に対してストッパ5を相対的に移動させてストッパ5を電極保持部3A(保持部本体51)における凸部11cよりも基端部側に位置させ、その後に、凸部11cに対して電極保持部3A(保持部本体51)の筒長方向にストッパ5の隙間が存在しない状態となるようにストッパ5を回動させた状態で、電線挿入部4Aに電極保持部3Aを挿入することでストッパ5を電線挿入部4A内に固定することで、ストッパ5を確実かつ容易に電線挿入部4A内に固定することができると共に、電極保持部3Aに対して電線挿入部4Aを「離間方向」へ相対的に移動させた際に凸部11cをストッパ5に対して確実に当接させて電極保持部3Aおよび電線挿入部4Aの意図しない分離を確実に回避することができる。 Therefore, according to the voltage sensor 1A, the stopper 5 is relative to the holding portion main body 51 so that the convex portion 11c passes through the gap between the one end portion and the other end portion in the circumferential direction of the stopper 5 during assembly. To position the stopper 5 on the base end side of the electrode holding portion 3A (holding portion main body 51) with respect to the convex portion 11c, and then the electrode holding portion 3A (holding portion main body 51) with respect to the convex portion 11c. By inserting the electrode holding portion 3A into the wire insertion portion 4A while the stopper 5 is rotated so that there is no gap in the stopper 5 in the cylinder length direction of the wire, the stopper 5 is inserted into the wire insertion portion 4A. By fixing, the stopper 5 can be securely and easily fixed in the electric wire insertion portion 4A, and when the electric wire insertion portion 4A is relatively moved in the "separation direction" with respect to the electrode holding portion 3A. The convex portion 11c can be reliably brought into contact with the stopper 5 to reliably avoid unintended separation of the electrode holding portion 3A and the electric wire insertion portion 4A.

また、この電圧センサ1Aでは、電線挿入部4Aが、「筒長方向」の一端部が電極保持部3Aおよびストッパ5を挿入可能に開口され、かつ「筒長方向」の他端部が閉塞されると共に、電線挿入部4Aの内面において電極保持部3Aによって保持された電極の先端面S2と対向させられる対向面S4が電線挿入部4Aの筒径方向において切欠きにおける他端部の側の内縁部の一部と一直線状に連続するように形成されて電線接触部Pxが設けられている。 Further, in the voltage sensor 1A, one end of the electric wire insertion portion 4A in the "cylinder length direction" is opened so that the electrode holding portion 3A and the stopper 5 can be inserted, and the other end portion in the "cylinder length direction" is closed. At the same time, the facing surface S4 facing the tip surface S2 of the electrode held by the electrode holding portion 3A on the inner surface of the electric wire inserting portion 4A is the inner edge of the other end side of the notch in the tubular radial direction of the electric wire inserting portion 4A. The electric wire contact portion Px is provided so as to be continuous with a part of the portion in a straight line.

したがって、この電圧センサ1Aによれば、電線挿入部4Aにおける切欠き32aの内縁部および対向面S4と、電極2における先端部2aの先端面S2との間に挟み込まれた被覆電線Xにおいて、弾性復帰が困難な程度に絶縁被覆が変形したり、断線(導線の接断)が生じたりする事態を招くことなく、電線挿入部4Aと電極2との間に被覆電線Xが挟み込まれた状態とすることができるため、被覆電線Xを傷付けることなく確実に保持する(被覆電線Xに対して電圧センサ1Aを確実に装着する)ことができる。 Therefore, according to the voltage sensor 1A, the covered electric wire X sandwiched between the inner edge portion and the facing surface S4 of the notch 32a in the electric wire insertion portion 4A and the tip end surface S2 of the tip end portion 2a in the electrode 2 is elastic. A state in which the covered electric wire X is sandwiched between the electric wire insertion portion 4A and the electrode 2 without causing a situation in which the insulating coating is deformed to the extent that it is difficult to recover or the wire is broken (connecting the lead wire). Therefore, the covered electric wire X can be reliably held without being damaged (the voltage sensor 1A can be reliably attached to the coated electric wire X).

さらに、この電圧センサ1Aによれば、切欠きにおける他端部の側の電線挿入部4Aの「周方向」に沿った開口幅が一端部から他端部に向かうほど狭くなるように切欠きにおける他端部の側を円弧状に形成すると共に、切欠きの内縁部における他端部の側の頂部Ppに電線接触部Pxを設けて電線挿入部4Aを構成したことにより、切欠き32a内に挿入した被覆電線Xを確実に電線接触部Pxに対して接触させた状態とすることができる。 Further, according to the voltage sensor 1A, the opening width of the wire insertion portion 4A on the other end side of the notch along the "circumferential direction" becomes narrower from one end toward the other end. The other end side is formed in an arc shape, and the electric wire contact portion Px is provided on the top portion Pp of the other end portion side of the inner edge portion of the notch to form the electric wire insertion portion 4A, thereby forming the electric wire insertion portion 4A in the notch 32a. It is possible to ensure that the inserted covered electric wire X is in contact with the electric wire contact portion Px.

一方、電線挿入部4,4Aに固定した状態において周方向の両端間に隙間が生じるようにC字状に形成したストッパ5を備えた電圧センサ1,1Aを例に挙げて説明したが、「移動規制用部材」の形状はこれに限定されない。例えば、その内径が「電極保持部」の外径と同程度で、その外径が「電線挿入部」の内径と同程度の一対の半環状の部材によって構成した「移動規制用部材」を備えて構成することができる。また、周方向で連続する1つの環状体で構成した「移動規制用部材」を備えて構成することができる。この場合、1つの環状体で構成した「移動規制用部材」を採用する場合には、その内周部に「移動規制用凸部」の通過が可能な凹部を設けることで、前述した電圧センサ1,1Aと同様に、組立てに際して「移動規制用部材」を「電極保持部」に装着した状態で「電極保持部」と共に「電線挿入部」に挿入することで「電線挿入部」に「移動規制用部材」を固定することが可能となる。 On the other hand, the voltage sensors 1 and 1A provided with the stopper 5 formed in a C shape so as to form a gap between both ends in the circumferential direction in the state of being fixed to the electric wire insertion portions 4 and 4A have been described as an example. The shape of the "movement control member" is not limited to this. For example, it is provided with a "movement control member" composed of a pair of semi-annular members whose inner diameter is about the same as the outer diameter of the "electrode holding portion" and whose outer diameter is about the same as the inner diameter of the "electric wire insertion portion". Can be configured. Further, it can be configured by including a "movement restricting member" composed of one annular body continuous in the circumferential direction. In this case, when the "movement regulation member" composed of one annular body is adopted, the voltage sensor described above is provided by providing a concave portion through which the "movement regulation convex portion" can pass in the inner peripheral portion thereof. Similar to 1,1A, when assembling, the "movement control member" is attached to the "electrode holding part" and then inserted into the "wire insertion part" together with the "electrode holding part" to "move" to the "wire insertion part". It is possible to fix the "regulatory member".

また、電極保持部3,3Aに凸部11cを1つだけ設けた電圧センサ1,1Aを例に挙げて説明したが、「電極保持部」に周方向に沿って複数の「移動規制用凸部」を設けることもできる。このような構成を採用した場合には、前述のように、一対の半環状の部材によって構成した「移動規制用部材」を採用したり、「移動規制用凸部」の通過が可能な複数の凹部を内周部に設けた1つの環状体で構成した「移動規制用部材」を採用したりすることにより、前述した電圧センサ1,1Aと同様に、組立てに際して「移動規制用部材」を「電極保持部」に装着した状態で「電極保持部」と共に「電線挿入部」に挿入することで「電線挿入部」に「移動規制用部材」を固定することが可能となる。 Further, although the voltage sensors 1 and 1A in which only one convex portion 11c is provided on the electrode holding portions 3 and 3A have been described as an example, a plurality of "convex for movement regulation" may be provided on the "electrode holding portion" along the circumferential direction. A "part" can also be provided. When such a configuration is adopted, as described above, a "movement regulation member" composed of a pair of semi-annular members can be adopted, or a plurality of "movement regulation convex portions" can pass through. By adopting a "movement control member" composed of one annular body having a recess provided in the inner peripheral portion, the "movement control member" can be "moved control member" at the time of assembly in the same manner as the voltage sensors 1 and 1A described above. By inserting it into the "wire insertion part" together with the "electrode holding part" while it is attached to the "electrode holding part", it is possible to fix the "movement regulation member" to the "wire insertion part".

さらに、「電線挿入部」に対する「移動規制用部材」の固定方法は、電線挿入部4,4Aに対するストッパ5の固定方法のような圧入に限定されず、接着やネジ止め等の各種の固定方法で「電線挿入部」に対して「移動規制用部材」を固定することができる。また、切欠き32aの内縁部および電線挿入部4の対向面S4に電線接触部Pxを設けた電線挿入部4,4Aを備えて電圧センサ1,1Aを例に挙げて説明したが、このような「電線接触部」が存在しない「電線挿入部」を備えて構成することもできる。さらに、電線挿入部4,4Aに対する電極保持部3,3Aの回動を規制可能にスリット32cに嵌合させられる凸部11cを「移動規制用凸部」として備えた構成を例に挙げて説明したが、「移動規制用凸部」としての機能以外の機能を備えない専用の凸部を「移動規制用凸部」として「電極保持部」に設けることもできる。 Further, the method of fixing the "movement control member" to the "electric wire insertion portion" is not limited to the press-fitting method such as the fixing method of the stopper 5 to the electric wire insertion portions 4 and 4A, and various fixing methods such as adhesion and screwing. The "movement control member" can be fixed to the "electric wire insertion portion". Further, the voltage sensors 1 and 1A will be described as an example by providing the electric wire insertion portions 4 and 4A in which the electric wire contact portion Px is provided on the inner edge portion of the notch 32a and the facing surface S4 of the electric wire insertion portion 4. It can also be configured to include a "wire insertion part" that does not have a "wire contact part". Further, a configuration in which a convex portion 11c that can be fitted to the slit 32c so that the rotation of the electrode holding portions 3 and 3A with respect to the electric wire insertion portions 4 and 4A can be regulated is provided as a "convex portion for movement regulation" will be described as an example. However, a dedicated convex portion having no function other than the function as the "convex portion for movement regulation" can be provided in the "electrode holding portion" as the "convex portion for movement regulation".

加えて、被覆電線Xの電圧を「被検出量」として検出する際に使用可能な電圧センサ1,1Aの構成を例に挙げて説明したが、電圧以外の任意の電気的パラメータを「被検出量」として検出可能な「センサ」において電圧センサ1,1A等と同様の構成を採用することもできる(図示せず)。 In addition, the configuration of the voltage sensors 1 and 1A that can be used when detecting the voltage of the coated electric wire X as the "detected amount" has been described as an example, but any electrical parameter other than the voltage can be "detected". It is also possible to adopt the same configuration as the voltage sensors 1, 1A and the like in the "sensor" that can be detected as "quantity" (not shown).

1,1A 電圧センサ
2 電極
3,3A 電極保持部
4,4A 電線挿入部
5,23 ストッパ
11,51 保持部本体
11a,11c,21a,61a 凸部
11b,13b,51b 溝部
12a,12b 絶縁体
13,31,43,61 筒状部
13a 雄ネジ
13c 平面部
14,22 コイルスプリング
15 ストッパ
21 操作用ノブ
32a 切欠き
32b 雌ネジ
32c スリット
43a 操作部
51a 段部
Pp 頂部
Px 電線接触部
S2 先端面
S4 対向面
X 被覆電線
1,1A Voltage sensor 2 Electrode 3,3A Electrode holding part 4,4A Wire insertion part 5,23 Stopper 11,51 Holding part Main body 11a, 11c, 21a, 61a Convex part 11b, 13b, 51b Groove part 12a, 12b Insulator 13 , 31, 43,61 Cylindrical part 13a Male screw 13c Flat part 14,22 Coil spring 15 Stopper 21 Operation knob 32a Notch 32b Female screw 32c Slit 43a Operation part 51a Step part Pp Top part Px Wire contact part S2 Tip surface S4 Facing surface X coated wire

Claims (5)

筒状に形成された電極保持部と、
前記電極保持部に挿入された状態で当該電極保持部によって保持されると共に被覆電線の導線に対して当該被覆電線の絶縁被覆を介して近接させられて当該導線と容量結合させられる電極と、
前記電極を保持した状態の前記電極保持部を挿入可能な筒状に形成されると共に周壁の一部が切り欠かれた切欠きに前記被覆電線を挿入可能に構成された電線挿入部とを備え、
前記電線挿入部に対する前記電極保持部の相対的な移動によって当該電線挿入部および当該電極保持部の筒長方向に沿って当該電線挿入部に対して当該電極保持部が相対的に移動させられて、当該電線挿入部に挿入された前記被覆電線に対して当該電極保持部によって保持された前記電極を接近させる接近方向、および当該被覆電線から当該電極を離間させる離間方向に当該電極を移動可能に構成されると共に、前記導線に対して容量結合させられた前記電極を介して前記被覆電線についての被検出量を当該導線に対して非接触の状態で検出可能に構成されたセンサであって、
前記電極保持部および前記電線挿入部の間に配設されて当該電極保持部に対する前記筒長方向への相対的な移動が可能な状態で当該電線挿入部に固定されると共に、当該電極保持部に対して当該電線挿入部が予め規定された位置まで前記離間方向へ相対的に移動させられたときに当該電極保持部の周面に設けられている移動規制用凸部に当接して当該電極保持部に対する当該電線挿入部の当該離間方向への相対的な移動を規制する移動規制用部材を備えているセンサ。
The electrode holding part formed in a tubular shape and
An electrode that is held by the electrode holding portion in a state of being inserted into the electrode holding portion and is brought close to the conducting wire of the coated electric wire via an insulating coating of the coated electric wire to be capacitively coupled to the conducting wire.
The electrode holding portion in a state of holding the electrode is formed in a tubular shape into which the electrode holding portion can be inserted, and the wire insertion portion is provided so that the coated electric wire can be inserted into the notch in which a part of the peripheral wall is cut out. ,
Due to the relative movement of the electrode holding portion with respect to the electric wire inserting portion, the electrode holding portion is moved relative to the electric wire inserting portion along the cylinder length direction of the electric wire inserting portion and the electrode holding portion. The electrode can be moved in the approaching direction in which the electrode held by the electrode holding portion approaches the coated electric wire inserted in the electric wire insertion portion and in the separating direction in which the electrode is separated from the coated electric wire. The sensor is configured so that the detected amount of the coated electric wire can be detected in a non-contact state with respect to the conducting wire through the electrode capacitively coupled to the conducting wire.
It is disposed between the electrode holding portion and the electric wire inserting portion and is fixed to the electric wire inserting portion in a state where it can move relative to the electrode holding portion in the cylinder length direction, and the electrode holding portion. On the other hand, when the electric wire insertion portion is relatively moved in the separation direction to a predetermined position, the electrode comes into contact with a movement-regulating convex portion provided on the peripheral surface of the electrode holding portion. A sensor including a movement regulating member that regulates the relative movement of the electric wire insertion portion with respect to the holding portion in the separation direction.
前記移動規制用部材は、環状に形成されると共に前記電線挿入部内に圧入されて当該電線挿入部に固定されている請求項1記載のセンサ。 The sensor according to claim 1, wherein the movement restricting member is formed in an annular shape and is press-fitted into the electric wire insertion portion and fixed to the electric wire insertion portion. 前記電極保持部は、前記移動規制用凸部が1つだけ設けられ、
前記移動規制用部材は、C字状に形成されると共に、当該移動規制用部材の周方向における一端部と他端部との間の隙間における当該周方向の長さが、前記電線挿入部に圧入されていない状態において前記電極保持部の周方向に沿った前記移動規制用凸部の長さ以上となり、かつ当該電線挿入部に圧入された状態において当該電極保持部の周方向に沿った当該移動規制用凸部の長さを下回るように弾性変形可能に構成されている請求項2記載のセンサ。
The electrode holding portion is provided with only one convex portion for movement regulation.
The movement restricting member is formed in a C shape, and the length in the circumferential direction in the gap between one end and the other end in the circumferential direction of the movement restricting member is set in the electric wire insertion portion. In the non-press-fitted state, the length is equal to or longer than the length of the movement-regulating convex portion along the circumferential direction of the electrode holding portion, and in the state of being press-fitted into the electric wire insertion portion, the length is along the circumferential direction of the electrode holding portion. The sensor according to claim 2, which is configured to be elastically deformable so as to be shorter than the length of the movement-regulating convex portion.
前記電線挿入部は、前記筒長方向の一端部が前記電極保持部および前記移動規制用部材を挿入可能に開口され、かつ当該筒長方向の他端部が閉塞されると共に、当該電線挿入部の内面において前記電極保持部によって保持された前記電極の先端面と対向させられる対向面が当該電線挿入部の筒径方向において前記切欠きにおける前記他端部の側の内縁部の一部と一直線状に連続するように形成された電線接触部が設けられている請求項1から3のいずれかに記載のセンサ。 In the electric wire insertion portion, one end in the tubular length direction is opened so that the electrode holding portion and the movement restricting member can be inserted, and the other end in the tubular length direction is closed, and the electric wire insertion portion is closed. The facing surface held by the electrode holding portion on the inner surface of the wire and facing the tip surface of the electrode is aligned with a part of the inner edge portion on the other end side of the notch in the tubular radial direction of the electric wire insertion portion. The sensor according to any one of claims 1 to 3, which is provided with an electric wire contact portion formed so as to be continuous in a shape. 前記電線挿入部は、前記切欠きにおける前記他端部の側の当該電線挿入部の周方向に沿った開口幅が前記一端部から前記他端部に向かうほど狭くなるように当該切欠きにおける当該他端部の側が円弧状に形成されると共に、当該切欠きの前記内縁部における前記他端部の側の頂部に前記電線接触部が設けられている請求項4記載のセンサ。 The electric wire insertion portion is formed in the notch so that the opening width along the circumferential direction of the electric wire insertion portion on the other end side of the notch becomes narrower from one end portion toward the other end portion. The sensor according to claim 4, wherein the side of the other end is formed in an arc shape, and the electric wire contact portion is provided at the top of the inner edge of the notch on the other end side.
JP2019103740A 2019-06-03 2019-06-03 sensor Active JP7250623B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019103740A JP7250623B2 (en) 2019-06-03 2019-06-03 sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019103740A JP7250623B2 (en) 2019-06-03 2019-06-03 sensor

Publications (2)

Publication Number Publication Date
JP2020197449A true JP2020197449A (en) 2020-12-10
JP7250623B2 JP7250623B2 (en) 2023-04-03

Family

ID=73649115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019103740A Active JP7250623B2 (en) 2019-06-03 2019-06-03 sensor

Country Status (1)

Country Link
JP (1) JP7250623B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000292452A (en) * 1999-02-03 2000-10-20 Ando Electric Co Ltd Electro-optical probe
JP2002303638A (en) * 2001-04-05 2002-10-18 Tatsunori Sakaide Probe for measuring instruments
JP2018204963A (en) * 2017-05-30 2018-12-27 日置電機株式会社 Sensor and measurement device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000292452A (en) * 1999-02-03 2000-10-20 Ando Electric Co Ltd Electro-optical probe
JP2002303638A (en) * 2001-04-05 2002-10-18 Tatsunori Sakaide Probe for measuring instruments
JP2018204963A (en) * 2017-05-30 2018-12-27 日置電機株式会社 Sensor and measurement device

Also Published As

Publication number Publication date
JP7250623B2 (en) 2023-04-03

Similar Documents

Publication Publication Date Title
EP2688153B1 (en) Electrical connector having grounding mechanism
US11355881B2 (en) Electrical connector housing, electrical connector and electrical connector assembly
KR101894965B1 (en) Probe pin and ic socket
TW201533450A (en) Current probe
IE57259B1 (en) Electrical circuit test probe and connector
JP5008582B2 (en) Contact probe
JP2018112475A (en) Electrode unit and detection probe
DE102020201240A1 (en) Connector element and connector for high-voltage applications
JP2020197449A (en) Sensor
JP7337595B2 (en) sensor
DE202016101839U1 (en) High-voltage test pin with two identical contact pins and electrical connector with high-voltage test pin
JP6801866B2 (en) Probe pin for large current
US2883640A (en) Transformer bushing assembly
JP7353860B2 (en) sensor
WO2020162341A1 (en) Sensor
WO2020162340A1 (en) Sensor
US20210336365A1 (en) Contact probe and inspection socket provided with contact probe
JP2018206603A (en) Connection apparatus
EP3048670A1 (en) Electrical connector having grounding mechanism
JP2019105519A (en) Sensor
JPH0459754B2 (en)
KR920004939Y1 (en) Connector
JP6095180B1 (en) connector
JP6889857B2 (en) Ground terminal
JP2021063787A (en) Sensor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20220426

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230214

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230307

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230322

R150 Certificate of patent or registration of utility model

Ref document number: 7250623

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150