JP4176936B2 - Terminal block - Google Patents

Description

【０００１】
【発明の属する技術分野】
この発明は、照明器具等に用いる電源端子台等の端子台に関するものである。
【０００２】
【従来の技術】
従来例（例えば実開平２−８７３８０号）の電源端子台を図８から図９に示す。５０、５０′は端子、５１は収納凹部５２を有するボディ、５３はそのうちの一対の収納凹部５２間を仕切る絶縁壁、５４はボディ５１に被さるカバーである。
【０００３】
端子５０は速結端子部５５と、圧接および速結用端子部５６からなり、速結端子部５５は電線を受ける側片５７と、電線に食い込む鎖錠片５８と、電線を押圧する押圧片５９を有する。
【０００４】
カバー５４に速結端子部５５および端子５０′用に電線挿入孔６０および解錠穴６１を形成し、圧接および速結用端子部５６用に圧接用電線挿通溝６２および電線挿通孔６３を形成し、ボディ５１に電線挿通孔６３と整合する電線挿入孔６４を形成している。
【０００５】
速結端子部５５では、電線を側片５７と鎖錠片５８との間に挿入すると、鎖錠片５８が電線を側片５７に押付けながら抜止め係止し、押圧片５９が電線を側片５７に押圧接触する。
【０００６】
【発明が解決しようとする課題】
しかし、絶縁壁５３では端子５０の異極間の沿面距離を十分に確保できない。
【０００７】
そこで、ボディ５１の異極の端子５０間に形成している絶縁壁５３の両面に縦に複数の絶縁リブ６５を収納凹部５２の開口側に位置した鎖錠片５８よりも高く形成し、鎖錠片５８および押圧片５９に当接させて沿面距離を長くすることが考えられた。
【０００８】
しかしながら、電線挿入孔６０や解錠穴６１より水滴が浸入した場合に異極間の沿面距離が十分でなく、まだ短くてトラッキング現象が生じやすくなる。
【０００９】
したがって、この発明の目的は、沿面距離をより一層長くし異極間における耐トラッキング性能を向上することができる端子台を提供することである。
【００１０】
【課題を解決するための手段】
請求項１記載の端子台は、電線を受ける側片を有しこの側片に前記電線を押付けて抜止め係止する鎖錠片を有し前記鎖錠片に係止された前記電線の先端側を前記側片に押圧する押圧片を有する一対の速結端子と、この一対の速結端子を前記電線の挿入方向に収納させる収納凹部を絶縁壁を介して並設したボディと、このボディに取付けられて前記速結端子を被覆するものであって前記鎖錠片と前記側片との間に対向する電線挿入孔を有するカバーとを備え、前記絶縁壁の前記電線の挿入方向の上端が前記鎖錠片よりも高く、前記絶縁壁の両面に前記電線の挿入方向に延びて上端が前記鎖錠片よりも低く前記押圧片よりも高い位置にある絶縁リブを設け、前記絶縁リブが前記押圧片の側縁に当接し、かつ前記鎖錠片の側縁に当接しないで前記鎖錠片と絶縁壁との間にスペースを形成するものである。
【００１１】
請求項１記載の端子台によれば、水滴の浸入しやすいカバーの電線挿入孔に近い異極端子間に絶縁壁と鎖錠片を離間させるスペースを設けたので、沿面距離をより一層長くでき異極間における耐トラッキング性が向上する。電線鎖錠片と絶縁リブの間にスペースを設けたため、絶縁リブが電線挿入時の鎖錠片の動作を阻害せず、電線の挿入性が安定する。またボディが樹脂の場合絶縁リブの削れ等も生じない。また端子の組立挿入時にスペースを挿入ガイドとして利用することができるので組立性が向上する。
【００１２】
請求項２記載の端子台は、請求項１において、前記絶縁壁の両面の絶縁リブは非対称に形成されているものである。
【００１３】
請求項２記載の端子台によれば、請求項１と同様な効果のほか、絶縁リブが千鳥配置となるのでより一層沿面距離を長くできる。
【００１４】
請求項３記載の端子台は、請求項１または請求項２において、前記速結端子は、前記絶縁壁と平行な平板部を有し、前記側片が前記平板部の両側に半筒状に折曲され、前記鎖錠片が前記平板部の端部中央に片持支持されて前記平板部と前記絶縁壁の間に位置し前記側片に向けて傾斜して前記側片に対向し、前記押圧片が前記平板部の前記絶縁壁側に設けられているものである。
【００１５】
請求項３記載の端子台によれば、請求項１または請求項２と同様な効果がある。
【００１６】
請求項４記載の端子台は、請求項３において、前記鎖錠片は解錠片を有し、前記解錠片を操作するための解錠穴を前記カバーに有するものである。
【００１７】
請求項４記載の端子台によれば、請求項３と同様な効果がある。
【００１８】
請求項５記載の端子台は、請求項１において、前記押圧片が前記平板部にかしめ取り付けまたは一体形成されているものである。
【００１９】
請求項５記載の端子台によれば、請求項１と同様な効果がある。
【００２０】
【発明の実施の形態】
この発明の第１の実施の形態を図１から図６により説明する。すなわち、この電源端子台は、一対の速結端子１、２と、ボディ３と、カバー４とを有する。
【００２１】
一対の速結端子１、２は、電線を受ける側片５を有し、この側片５に電線を押付けて抜止め係止する鎖錠片６を有し、鎖錠片６を挿通した電線を側片５に押圧する押圧片７を有する。実施の形態では、ボディ３の絶縁壁８と平行な平板部９を有し、側片５が平板部９の両側に電線挿入方向に軸線を有する半筒状例えば半円筒状に折曲され、鎖錠片６が平板部９の端部中央に折曲により片持支持されて平板部９と絶縁壁８の間に位置するとともに側片５に向けて傾斜し先端が側片５に対向し、押圧片７が平板部９の絶縁壁８側に設けられている。鎖錠片６は解錠片１０を有する。押圧片７は平板部９にリベット等のかしめ具によりかしめ取り付けまたは一体形成されている。なお、１ａ、２ａは位置決め孔、１１は速結端子１、２に一体に設けられた別の速結部、１２はアース用速結端子、１３はアース用速結端子の下縁が接触するアース片である。
【００２２】
ボディ３は、一対の速結端子１、２を電線の挿入方向に収納させる一対の収納凹部１５を絶縁壁８を介して並設し絶縁壁８の両面に押圧片７の側縁に当接しかつ鎖錠片６と絶縁壁８との間に非接触の空間すなわちスペース３０を形成する絶縁リブ１６を例えば図１に示すように縦に直線状に両面にそれぞれ複数設けている。絶縁リブ１６は従来の絶縁リブと比較して上端が低くなっている。絶縁壁８は端子板１、２の上端よりも高く形成されている。なお、３ａは位置決め孔１ａ、２ａに嵌合する位置決め突起、１７はアース用速結端子１２の収納凹部、１８は速結部１１の電線挿入孔、１９はカバー取付爪、２０は器具取付爪である。
【００２３】
カバー４は、ボディ３に取付けられて速結端子１、２を被覆するものであって鎖錠片６と側片５との間に対向する電線挿入孔２２を有する。また解錠片１０を操作するための解錠穴２３をカバー４に有する。２４はアース用速結端子１２のための電線挿入孔、２５はその電線解錠穴、２６は電線挿入孔１８に整合する電線挿通孔、２７はカバー取付爪１９に係止する係止孔である。
【００２４】
この実施の形態によれば、水滴の浸入しやすい電線挿入孔２２側の異極端子１、２間に絶縁壁８と鎖錠片６を離間させるスペース３０を設けたので、沿面距離をより一層長くでき異極間における耐トラッキング性が向上する。また鎖錠片６と絶縁リブ１６の間にスペース３０を設けたので、電線挿入時の鎖錠片６の動作を阻害せず、挿入性が安定する。すなわち、電線挿入時に鎖錠片６は図６に示すように想像線の状態から実線の状態に矢印Ｃのように弾性変形するが、鎖錠片６の基部側すなわち一対の鎖錠片６を結ぶ中央側が平板部９の上端部より９０度折曲されて片持支持されているため、その基部が９０度以上に若干変形する。またボディ３が樹脂の場合削れ等も生じない。また端子１、２の組立挿入時にスペース３０を挿入ガイドとして利用することができるので組立性が向上する。
【００２５】
この発明の第２の実施の形態を図７に示す。すなわち、この端子台は、第１の実施の形態において、絶縁壁８の両面の絶縁リブ１６が非対称に形成されている。絶縁リブ１６が千鳥配置となるのでより一層沿面距離を長くできる。その他は第１の実施の形態と同様である。
【００２６】
【発明の効果】
請求項１記載の端子台によれば、水滴の浸入しやすいカバーの電線挿入孔に近い異極端子間に絶縁壁と鎖錠片を離間させるスペースを設けたので、沿面距離をより一層長くでき異極間における耐トラッキング性が向上する。電線鎖錠片と絶縁リブの間にスペースを設けたため、絶縁リブが電線挿入時の鎖錠片の動作を阻害せず、電線の挿入性が安定する。またボディが樹脂の場合絶縁リブの削れ等も生じない。また端子の組立挿入時にスペースを挿入ガイドとして利用することができるので組立性が向上する。
【００２７】
請求項２記載の端子台によれば、請求項１と同様な効果のほか、絶縁リブが千鳥配置となるのでより一層沿面距離を長くできる。
【００２８】
請求項３記載の端子台によれば、請求項１または請求項２と同様な効果がある。
【００２９】
請求項４記載の端子台によれば、請求項３と同様な効果がある。
【００３０】
請求項５記載の端子台によれば、請求項１と同様な効果がある。
【図面の簡単な説明】
【図１】この発明の第１の実施の形態の端子台の分解斜視図である。
【図２】カバーを外したボディの平面図である。
【図３】図２のＡ−Ａ線断面図である。
【図４】ボディの正面図である。
【図５】端子台の斜視図である。
【図６】鎖錠片の動作を説明する部分斜視図である。
【図７】第２の実施の形態の部分平面図である。
【図８】従来例の分解斜視図である。
【図９】そのカバーを外した状態の平面図である。
【符号の説明】
１、２ 端子
３ ボディ
４ カバー
５ 側片
６ 鎖錠片
７ 押圧片
８ 絶縁壁
９ 平板部
１０ 解錠片
１５ 収納凹部
１６ 絶縁リブ
２２ 電線挿入孔
２３ 解錠穴
３０ スペース[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terminal block such as a power supply terminal block used for a lighting fixture or the like.
[0002]
[Prior art]
A power terminal block of a conventional example (for example, Japanese Utility Model Laid-Open No. 2-87380) is shown in FIGS. 50 and 50 ′ are terminals, 51 is a body having a housing recess 52, 53 is an insulating wall that partitions the pair of housing recesses 52, and 54 is a cover that covers the body 51.
[0003]
The terminal 50 includes a quick connection terminal portion 55 and a terminal portion 56 for pressure contact and quick connection. The fast connection terminal portion 55 includes a side piece 57 that receives an electric wire, a locking piece 58 that bites into the electric wire, and a pressing piece that presses the electric wire. 59.
[0004]
A wire insertion hole 60 and an unlocking hole 61 are formed in the cover 54 for the quick connection terminal portion 55 and the terminal 50 ′, and a pressure connection wire insertion groove 62 and a wire insertion hole 63 are formed for the pressure connection and fast connection terminal portion 56. The body 51 is formed with a wire insertion hole 64 that matches the wire insertion hole 63.
[0005]
In the quick connection terminal portion 55, when the electric wire is inserted between the side piece 57 and the locking piece 58, the locking piece 58 holds and holds the electric wire against the side piece 57, and the pressing piece 59 moves the electric wire to the side. Pressing and contacting the piece 57.
[0006]
[Problems to be solved by the invention]
However, the insulating wall 53 cannot ensure a sufficient creepage distance between the different poles of the terminal 50.
[0007]
Therefore, a plurality of insulating ribs 65 are vertically formed on both surfaces of the insulating wall 53 formed between the terminals 50 of different polarities of the body 51 so as to be higher than the locking pieces 58 positioned on the opening side of the housing recess 52. It has been considered to increase the creepage distance by contacting the lock piece 58 and the pressing piece 59.
[0008]
However, when a water droplet enters from the wire insertion hole 60 or the unlocking hole 61, the creepage distance between the different poles is not sufficient, and the tracking phenomenon is likely to occur because the creepage distance is still short.
[0009]
Accordingly, an object of the present invention is to provide a terminal block that can further increase the creeping distance and improve the tracking resistance between different poles.
[0010]
[Means for Solving the Problems]
Terminal block according to claim 1, wherein the tip of the wire, which is engaged with the locking piece has a locking piece for retaining locking by pressing the wire to the side pieces have a side piece which receives the wire A pair of quick connection terminals having a pressing piece for pressing the side against the side piece; a body in which a housing recess for storing the pair of quick connection terminals in the insertion direction of the electric wire is arranged in parallel via an insulating wall; and And a cover having a wire insertion hole facing the locking piece and the side piece, the upper end of the insulating wall in the direction of insertion of the wire. Is provided with insulating ribs that are higher than the locking pieces, extend on both sides of the insulating wall in the insertion direction of the electric wire, and have an upper end that is lower than the locking pieces and higher than the pressing pieces. The chain is in contact with the side edge of the pressing piece and is not in contact with the side edge of the locking piece. And it forms a space between the pieces and the insulating wall.
[0011]
According to the terminal block of the first aspect, since the space for separating the insulating wall and the locking piece is provided between the different-polarity terminals near the wire insertion hole of the cover where water droplets can easily enter, the creepage distance can be further increased. Improved tracking resistance between different poles. Since a space is provided between the electric wire locking piece and the insulating rib, the insulating rib does not hinder the operation of the locking piece when the electric wire is inserted, and the electric wire insertion property is stabilized. Further, when the body is made of resin, the insulating rib is not scraped. Further, since the space can be used as an insertion guide when the terminal is assembled and inserted, the assemblability is improved.
[0012]
A terminal block according to a second aspect is the terminal block according to the first aspect, wherein the insulating ribs on both surfaces of the insulating wall are formed asymmetrically.
[0013]
According to the terminal block of the second aspect, in addition to the same effect as the first aspect, the creeping distance can be further increased because the insulating ribs are arranged in a staggered manner.
[0014]
The terminal block according to claim 3 is the terminal block according to claim 1 or 2, wherein the quick connection terminal has a flat plate portion parallel to the insulating wall, and the side pieces are formed in a semi-cylindrical shape on both sides of the flat plate portion. Bent, and the locking piece is cantilevered and supported at the center of the end of the flat plate portion, is positioned between the flat plate portion and the insulating wall and is inclined toward the side piece to face the side piece, The pressing piece is provided on the insulating wall side of the flat plate portion.
[0015]
According to the terminal block of the third aspect, the same effect as that of the first or second aspect is obtained.
[0016]
A terminal block according to a fourth aspect is the terminal block according to the third aspect, wherein the locking piece has an unlocking piece, and the cover has an unlocking hole for operating the unlocking piece.
[0017]
According to the terminal block of the fourth aspect, the same effect as the third aspect is obtained.
[0018]
The terminal block according to a fifth aspect is the terminal block according to the first aspect, wherein the pressing piece is caulked or integrally formed with the flat plate portion.
[0019]
According to the terminal block of the fifth aspect, the same effect as the first aspect is obtained.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, this power supply terminal block has a pair of quick connection terminals 1 and 2, a body 3, and a cover 4.
[0021]
The pair of quick connection terminals 1, 2 has a side piece 5 that receives an electric wire, has a locking piece 6 that presses and holds the electric wire against the side piece 5, and is inserted through the locking piece 6. A pressing piece 7 for pressing the side piece 5 against the side piece 5. In the embodiment, it has a flat plate portion 9 parallel to the insulating wall 8 of the body 3, and the side pieces 5 are bent into a semi-cylindrical shape, for example, a semi-cylindrical shape, having an axis in the electric wire insertion direction on both sides of the flat plate portion 9. The locking piece 6 is cantilevered and supported at the center of the end portion of the flat plate portion 9 by being positioned between the flat plate portion 9 and the insulating wall 8 and inclined toward the side piece 5, with the tip facing the side piece 5. The pressing piece 7 is provided on the insulating wall 8 side of the flat plate portion 9. The locking piece 6 has an unlocking piece 10. The pressing piece 7 is caulked or integrally formed on the flat plate portion 9 by caulking tools such as rivets. In addition, 1a and 2a are positioning holes, 11 is another quick connection part provided integrally with the quick connection terminals 1 and 2, 12 is a ground quick connection terminal, and 13 is in contact with the lower edge of the ground quick connection terminal. It is a grounding piece.
[0022]
The body 3 is provided with a pair of storage recesses 15 for storing the pair of quick connection terminals 1 and 2 in the electric wire insertion direction through the insulating wall 8, and abuts the side edges of the pressing piece 7 on both surfaces of the insulating wall 8. In addition, a plurality of insulating ribs 16 that form a non-contact space, that is, a space 30, between the locking piece 6 and the insulating wall 8 are provided on both surfaces in a straight line vertically as shown in FIG. 1, for example. The insulating rib 16 has a lower upper end compared to the conventional insulating rib. The insulating wall 8 is formed higher than the upper ends of the terminal plates 1 and 2. In addition, 3a is a positioning projection that fits into the positioning holes 1a and 2a, 17 is a housing recess for the quick connection terminal 12 for grounding, 18 is a wire insertion hole of the quick connection portion 11, 19 is a cover mounting claw, and 20 is an instrument mounting claw. It is.
[0023]
The cover 4 is attached to the body 3 so as to cover the quick connection terminals 1 and 2, and has an electric wire insertion hole 22 opposed between the locking piece 6 and the side piece 5. The cover 4 has an unlocking hole 23 for operating the unlocking piece 10. Reference numeral 24 denotes an electric wire insertion hole for the ground quick connection terminal 12, reference numeral 25 denotes an electric wire unlocking hole, reference numeral 26 denotes an electric wire insertion hole that aligns with the electric wire insertion hole 18, and reference numeral 27 denotes an engagement hole that engages with the cover mounting claw 19. is there.
[0024]
According to this embodiment, since the space 30 for separating the insulating wall 8 and the locking piece 6 is provided between the different polarity terminals 1 and 2 on the side of the electric wire insertion hole 22 where water drops can easily enter, the creepage distance is further increased. The tracking resistance between different poles can be increased. Further, since the space 30 is provided between the locking piece 6 and the insulating rib 16, the operation of the locking piece 6 at the time of inserting the electric wire is not hindered, and the insertability is stabilized. That is, when the electric wire is inserted, the locking piece 6 is elastically deformed from an imaginary line state to a solid line state as shown by an arrow C as shown in FIG. 6, but the base side of the locking piece 6, that is, the pair of locking pieces 6 is Since the central side to be connected is bent 90 degrees from the upper end of the flat plate part 9 and is cantilevered, the base part is slightly deformed to 90 degrees or more. Further, when the body 3 is made of resin, no scraping occurs. Further, since the space 30 can be used as an insertion guide when the terminals 1 and 2 are assembled and inserted, the assemblability is improved.
[0025]
A second embodiment of the present invention is shown in FIG. That is, in this terminal block, the insulating ribs 16 on both surfaces of the insulating wall 8 are formed asymmetrically in the first embodiment. Since the insulating ribs 16 are staggered, the creepage distance can be further increased. Others are the same as in the first embodiment.
[0026]
【The invention's effect】
According to the terminal block of the first aspect, since the space for separating the insulating wall and the locking piece is provided between the different-polarity terminals near the wire insertion hole of the cover where water droplets can easily enter, the creepage distance can be further increased. Improved tracking resistance between different poles. Since a space is provided between the electric wire locking piece and the insulating rib, the insulating rib does not hinder the operation of the locking piece when the electric wire is inserted, and the electric wire insertion property is stabilized. Further, when the body is made of resin, the insulating rib is not scraped. Further, since the space can be used as an insertion guide when the terminal is assembled and inserted, the assemblability is improved.
[0027]
According to the terminal block of the second aspect, in addition to the same effect as the first aspect, the creeping distance can be further increased because the insulating ribs are arranged in a staggered manner.
[0028]
According to the terminal block of the third aspect, the same effect as that of the first or second aspect is obtained.
[0029]
According to the terminal block of the fourth aspect, the same effect as the third aspect is obtained.
[0030]
According to the terminal block of the fifth aspect, the same effect as the first aspect is obtained.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a terminal block according to a first embodiment of the present invention.
FIG. 2 is a plan view of the body with the cover removed.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a front view of the body.
FIG. 5 is a perspective view of a terminal block.
FIG. 6 is a partial perspective view for explaining the operation of the locking piece.
FIG. 7 is a partial plan view of the second embodiment.
FIG. 8 is an exploded perspective view of a conventional example.
FIG. 9 is a plan view with the cover removed.
[Explanation of symbols]
1, 2 Terminal 3 Body 4 Cover 5 Side piece 6 Locking piece 7 Pressing piece 8 Insulating wall 9 Flat plate part 10 Unlocking piece 15 Storage recess 16 Insulating rib 22 Electric wire insertion hole 23 Unlocking hole 30 Space

Claims (5)

電線を受ける側片を有しこの側片に前記電線を押付けて抜止め係止する鎖錠片を有し前記鎖錠片に係止された前記電線の先端側を前記側片に押圧する押圧片を有する一対の速結端子と、この一対の速結端子を前記電線の挿入方向に収納させる収納凹部を絶縁壁を介して並設したボディと、このボディに取付けられて前記速結端子を被覆するものであって前記鎖錠片と前記側片との間に対向する電線挿入孔を有するカバーとを備え、前記絶縁壁の前記電線の挿入方向の上端が前記鎖錠片よりも高く、前記絶縁壁の両面に前記電線の挿入方向に延びて上端が前記鎖錠片よりも低く前記押圧片よりも高い位置にある絶縁リブを設け、前記絶縁リブが前記押圧片の側縁に当接し、かつ前記鎖錠片の側縁に当接しないで前記鎖錠片と絶縁壁との間にスペースを形成する端子台。A pressing member that has a side piece that receives an electric wire, and that has a locking piece that presses and holds the electric wire against the side piece, and that presses the distal end side of the electric wire that is locked to the locking piece against the side piece. a pair of quick connect terminals with the one-sided, and a body which juxtaposed the pair of quick connect terminals via the housing recess insulating walls which is housed in the insertion direction of the electric wire, the speed forming pin attached to the body A cover having a wire insertion hole facing between the locking piece and the side piece, the upper end of the insulating wall in the insertion direction of the electric wire being higher than the locking piece, Insulating ribs are provided on both surfaces of the insulating wall so as to extend in the insertion direction of the electric wire and have an upper end lower than the locking piece and higher than the pressing piece, and the insulating rib contacts the side edge of the pressing piece. And a space between the locking piece and the insulating wall without contacting the side edge of the locking piece. Terminal block to form a nest. 前記絶縁壁の両面の絶縁リブは非対称に形成されている請求項１記載の端子台。The terminal block according to claim 1, wherein the insulating ribs on both surfaces of the insulating wall are formed asymmetrically. 前記速結端子は、前記絶縁壁と平行な平板部を有し、前記側片が前記平板部の両側に半筒状に折曲され、前記鎖錠片が前記平板部の端部中央に片持支持されて前記平板部と前記絶縁壁の間に位置し前記側片に向けて傾斜して前記側片に対向し、前記押圧片が前記平板部の前記絶縁壁側に設けられている請求項１または請求項２記載の端子台。The quick-connect terminal has a flat plate portion parallel to the insulating wall, the side piece is bent in a semi-cylindrical shape on both sides of the flat plate portion, and the locking piece is a piece at the end center of the flat plate portion. It is supported between the flat plate portion and the insulating wall, is inclined toward the side piece and faces the side piece, and the pressing piece is provided on the insulating wall side of the flat plate portion. The terminal block according to claim 1 or 2. 前記鎖錠片は解錠片を有し、前記解錠片を操作するための解錠穴を前記カバーに有する請求項３記載の端子台。The terminal block according to claim 3, wherein the lock piece includes an unlock piece, and the cover has an unlock hole for operating the unlock piece. 前記押圧片は前記平板部にかしめ取り付けまたは一体形成されている請求項１記載の端子台。The terminal block according to claim 1, wherein the pressing piece is caulked or integrally formed with the flat plate portion.

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