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JP5457136B2 - Power circuit breaker - Google Patents
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JP5457136B2 - Power circuit breaker - Google Patents

Power circuit breaker Download PDF

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Publication number
JP5457136B2
JP5457136B2 JP2009243770A JP2009243770A JP5457136B2 JP 5457136 B2 JP5457136 B2 JP 5457136B2 JP 2009243770 A JP2009243770 A JP 2009243770A JP 2009243770 A JP2009243770 A JP 2009243770A JP 5457136 B2 JP5457136 B2 JP 5457136B2
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Prior art keywords
housing
wall portion
cylindrical wall
pair
cover
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JP2009243770A
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Japanese (ja)
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JP2011090902A (en
Inventor
智洋 池田
翔 野頭
敬三 青木
照彦 大池
潤之 加藤
洋介 空
泰介 磯永
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Nissan Motor Co Ltd
Yazaki Corp
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Nissan Motor Co Ltd
Yazaki Corp
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Priority to JP2009243770A priority Critical patent/JP5457136B2/en
Priority to FR1056665A priority patent/FR2951865B1/en
Publication of JP2011090902A publication Critical patent/JP2011090902A/en
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Publication of JP5457136B2 publication Critical patent/JP5457136B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/48—Protective devices wherein the fuse is carried or held directly by the base
    • H01H85/50—Protective devices wherein the fuse is carried or held directly by the base the fuse having contacts at opposite ends for co-operation with the base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H01H85/0026—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices casings for the fuse and its base contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/205—Electric connections to contacts on the base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/547—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers with sliding fuse carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/025—Structural association with a binding post of a storage battery

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  • Fuses (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

本発明は、電源回路遮断装置に係り、特に、電源回路を開き電流を遮断する電源回路遮断装置（サービスプラグ）に関するものである。   The present invention relates to a power circuit breaker, and more particularly, to a power circuit breaker (service plug) that opens a power circuit and cuts off a current.

例えば電気自動車では、バッテリである電源の容量が通常のガソリンエンジン車等に比べて大容量であるため、電気系統などをメンテナンスするような場合には電源回路遮断装置（サービスプラグ）によって電源回路を開いて作業安全性を確保する。この種の従来の電源回路遮断装置として、図５〜図８に示す電源回路遮断装置１０１がある（例えば、特許文献１参照）。   For example, in an electric vehicle, since the capacity of the power source that is a battery is larger than that of a normal gasoline engine vehicle, etc., when the electric system or the like is maintained, the power circuit is disconnected by a power circuit breaker (service plug). Open to ensure work safety. As this type of conventional power circuit breaker, there is a power circuit breaker 101 shown in FIGS. 5 to 8 (see, for example, Patent Document 1).

同図に示すように、電源回路遮断装置１０１は、過電流が流れると溶断する可溶体１０２と、可溶体１０２を収容する凹状のハウジング（第１ハウジング）１０３と、このハウジング１０３の開口部を覆うカバー１０４と、一端が可溶体１０２に接続されると共に他端がハウジング１０３外に突出するように設けられた一対の端子１０５と、開いた電源回路の両端にそれぞれ接続される一対の回路端子１０６を保持するボックス（第２ハウジング）１０７と、を備えている。   As shown in the figure, the power circuit breaker 101 includes a fusible body 102 that melts when an overcurrent flows, a concave housing (first housing) 103 that houses the fusible body 102, and an opening of the housing 103. A cover 104 for covering, a pair of terminals 105 provided so that one end is connected to the fusible body 102 and the other end protrudes out of the housing 103, and a pair of circuit terminals respectively connected to both ends of the opened power supply circuit And a box (second housing) 107 for holding 106.

上記ハウジング１０３は、図７に示すように、可溶体１０２が収容される底壁部１０３ａと、この底壁部１０３ａからカバー１０４に向かって立設された筒状の筒壁部１０３ｂと、この底壁部１０３ａからボックス１０７に向かって立設された筒状の筒壁部１０３ｃと、が設けられている。上記カバー１０４は、ハウジング１０３の開口を覆う上壁部１０４ａと、この上壁部１０４ａからハウジング１０３に向かって立設されると共に上記ハウジング１０３の筒壁部１０３ｂ内に嵌合される筒状の筒壁部１０４ｂと、が設けられている。   As shown in FIG. 7, the housing 103 includes a bottom wall portion 103 a in which the fusible body 102 is accommodated, a cylindrical tube wall portion 103 b erected from the bottom wall portion 103 a toward the cover 104, And a cylindrical tube wall portion 103c standing from the bottom wall portion 103a toward the box 107. The cover 104 has an upper wall portion 104 a that covers the opening of the housing 103, and a cylindrical shape that is erected from the upper wall portion 104 a toward the housing 103 and is fitted into the cylindrical wall portion 103 b of the housing 103. A cylindrical wall portion 104b.

上記ボックス１０７は、上記一対の回路端子１０６を保持する底壁部１０７ａと、この底壁部１０７ａからハウジング１０３に向かって立設されると共に内部にハウジング１０３の筒壁部１０３ｃが嵌め込まれる筒状の外側筒壁部１０７ｂと、この底壁部１０７ａからハウジング１０３に向かって立設されると共にハウジング１０３の筒壁部１０３ｃ内に収容される筒状の内側筒壁部１０７ｃと、が設けられている。また、上記ハウジング１０３は、図５に示すように、その外表面にレバー１０８が回動自在に取り付けられており、レバー１０８の回動操作により、ボックス１０７の外側筒壁部１０７ｂ内にハウジング１０３が嵌め込まれた嵌合位置と、ボックス１０７外にハウジング１０３が位置づけられた離脱位置と、に亘ってボックス１０７に対して接離する。   The box 107 has a bottom wall portion 107a that holds the pair of circuit terminals 106, and a cylindrical shape that is erected from the bottom wall portion 107a toward the housing 103 and into which the cylindrical wall portion 103c of the housing 103 is fitted. An outer cylindrical wall portion 107b, and a cylindrical inner cylindrical wall portion 107c that is erected from the bottom wall portion 107a toward the housing 103 and is accommodated in the cylindrical wall portion 103c of the housing 103. Yes. As shown in FIG. 5, the housing 103 has a lever 108 rotatably attached to the outer surface thereof, and the housing 103 is placed in the outer cylindrical wall 107 b of the box 107 by the turning operation of the lever 108. Is brought into and out of contact with the box 107 over a fitting position where the is inserted and a disengagement position where the housing 103 is positioned outside the box 107.

以上の電源回路遮断装置１０１によれば、レバー１０８の回動操作により、ボックス１０７内にハウジング１０３が嵌め込まれる嵌合位置にハウジング１０３を位置付けると、一対の端子１０５と一対の回路端子１０６とがそれぞれ接続されて、一対の端子１０５及び可溶体１０２を介して一対の回路端子１０６間が導通して電源回路が閉状態となる。一方、レバー１０８の回転操作によりボックス１０７外にハウジング１０３が位置する離脱位置にハウジング１０３を位置付けると、端子１０５と回路端子１０６との接続が外れて、電源回路が開状態となる。   According to the power circuit breaker 101 described above, when the housing 103 is positioned at a fitting position where the housing 103 is fitted in the box 107 by the turning operation of the lever 108, the pair of terminals 105 and the pair of circuit terminals 106 are connected. They are connected to each other, and the pair of circuit terminals 106 are brought into conduction through the pair of terminals 105 and the fusible body 102, so that the power supply circuit is closed. On the other hand, when the housing 103 is positioned at the disengagement position where the housing 103 is located outside the box 107 by the rotation operation of the lever 108, the connection between the terminal 105 and the circuit terminal 106 is disconnected, and the power supply circuit is opened.

特開２００１−７６５９３号公報JP 2001-76593 A

上述した電源回路遮断装置１０１は、図８に示すように、防水機能を持たせるためにカバー１０４−ハウジング１０３間と、ハウジング１０３−ボックス１０７間と、の２箇所にそれぞれリップパッキン１０９、１１０を配置している。上記リップパッキン１０９は、図８（Ａ）に示すように、リング状に設けられていて、前記カバー１０４の筒壁部１０４ｂとハウジング１０３の筒壁部１０３ｂとの間に配置されている。また、上記リップパッキン１１０は、図８（Ｂ）に示すように、リング状に設けられていて、ハウジング１０３の筒壁部１０３ｃとボックス１０７の内側筒壁部１０７ｄとの間に配置されている。また、上記リップパッキン１０９を動かないように保持するためにリング状のパッキンホルダ１１１を取り付けている。   As shown in FIG. 8, the power circuit breaker 101 described above has lip packings 109 and 110 at two locations, between the cover 104 and the housing 103 and between the housing 103 and the box 107, respectively, in order to provide a waterproof function. It is arranged. As shown in FIG. 8A, the lip packing 109 is provided in a ring shape and is disposed between the cylindrical wall portion 104 b of the cover 104 and the cylindrical wall portion 103 b of the housing 103. Further, as shown in FIG. 8B, the lip packing 110 is provided in a ring shape, and is disposed between the cylindrical wall portion 103c of the housing 103 and the inner cylindrical wall portion 107d of the box 107. . A ring-shaped packing holder 111 is attached to hold the lip packing 109 so as not to move.

このため、上述した従来の電源回路遮断装置１０１は、上述したようにカバー１０４とハウジング１０３間、ハウジング１０３とボックス１０７間のそれぞれに防水機能を持たせるために２個のリップパッキン１０９、１１０を用いる必要があり、部品点数が多い、という問題があった。また、ボックス１０７側に防水機能を持たせるためにリップパッキン１０９、１１０の動きを抑制するためのパッキンホルダ１１１が必要であり、これも部品点数が多い原因となっていた。さらに、ボックス１０７を覆うフード部が無いため、図８（Ｂ）に示すように、ボックス１０７の外側筒壁部１０７ｂとハウジング１０３の筒壁部１０３ｃとの隙間Ｓから水が進入して水がたまり、防水性が低下する、という問題があった。   For this reason, the above-described conventional power circuit breaker 101 has two lip packings 109 and 110 for providing a waterproof function between the cover 104 and the housing 103 and between the housing 103 and the box 107 as described above. There was a problem that it was necessary to use and the number of parts was large. Further, in order to provide a waterproof function on the box 107 side, a packing holder 111 for suppressing the movement of the lip packings 109 and 110 is necessary, which also causes a large number of parts. Further, since there is no hood portion that covers the box 107, water enters from the gap S between the outer cylindrical wall portion 107b of the box 107 and the cylindrical wall portion 103c of the housing 103 as shown in FIG. There was a problem that the waterproofness deteriorated.

そこで、本発明は、防水性を向上させると共に部品点数削減を図った電源回路遮断装置を課題とすることを目的としている。   Therefore, an object of the present invention is to provide a power circuit breaker that improves waterproofness and reduces the number of components.

上述した課題を解決するための請求項１記載の発明によれば、過電流が流れると溶断する可溶体と、前記可溶体を収容する第１ハウジングと、前記第１ハウジングの開口を覆うカバーと、一端が前記可溶体と接続されると共に他端が前記第１ハウジング外に突出するように設けられた一対の端子と、前記一対の端子の各々と接続可能な一対の回路端子を保持する底壁部、及び、前記底壁部から立設され内部に前記第１ハウジングが嵌め込まれる筒状の筒壁部、が設けられた第２ハウジングと、を備えた電源回路遮断装置において、前記カバーに、前記第２ハウジングの筒壁部内に収容される筒状の内側筒壁部と、前記第２ハウジングの筒壁部を内部に収容する筒状の外側筒壁部と、前記内側筒壁部及び前記外側筒壁部を連結すると共に前記第２ハウジングの筒壁部の端面を覆うフード部と、が設けられ、前記第２ハウジングの筒壁部と前記カバーの内側筒壁部との間に配置されたパッキンをさらに備え、前記第１ハウジングに、前記フード部との間に前記パッキンを挟んで保持する保持部が設けられていることを特徴とする電源回路遮断装置に存する。 According to invention of Claim 1 for solving the subject mentioned above, the soluble body which melts | fuses when an overcurrent flows, The 1st housing which accommodates the said soluble body, The cover which covers the opening of the said 1st housing, , A pair of terminals provided so that one end is connected to the fusible body and the other end protrudes outside the first housing, and a bottom holding a pair of circuit terminals connectable to each of the pair of terminals A power circuit breaker comprising: a wall portion; and a second housing provided with a cylindrical tubular wall portion that is erected from the bottom wall portion and into which the first housing is fitted. A cylindrical inner cylindrical wall portion accommodated in the cylindrical wall portion of the second housing, a cylindrical outer cylindrical wall portion that accommodates the cylindrical wall portion of the second housing therein, the inner cylindrical wall portion, and The outer cylindrical wall is connected and the first A hood covering the end surface of the cylindrical wall portion of the housing, is provided, further comprising the placed gasket between the inner tubular wall of the cover and the cylindrical wall portion of the second housing, the first housing A holding circuit for holding the packing between the hood and the hood is provided .

請求項２記載の発明は、前記第１ハウジングに、前記カバーの内側筒壁部の端部を収容する収容溝が設けられていることを特徴とする請求項１に記載の電源回路遮断装置に存する。 According to a second aspect of the present invention, in the power circuit breaker according to the first aspect , the first housing is provided with a housing groove for accommodating an end portion of the inner cylindrical wall portion of the cover. Exist.

請求項３記載の発明は、過電流が流れると溶断する可溶体と、前記可溶体を収容する第１ハウジングと、前記第１ハウジングの開口を覆うカバーと、一端が前記可溶体と接続されると共に他端が前記第１ハウジング外に突出するように設けられた一対の端子と、前記一対の端子の各々と接続可能な一対の回路端子を保持する底壁部、及び、前記底壁部から立設され内部に前記第１ハウジングが嵌め込まれる筒状の筒壁部、が設けられた第２ハウジングと、を備えた電源回路遮断装置において、前記カバーに、前記第２ハウジングの筒壁部内に収容される筒状の内側筒壁部と、前記第２ハウジングの筒壁部を内部に収容する筒状の外側筒壁部と、前記内側筒壁部及び前記外側筒壁部を連結すると共に前記第２ハウジングの筒壁部の端面を覆うフード部と、が設けられ、前記第２ハウジングの筒壁部と前記カバーの内側筒壁部との間に配置されたパッキンをさらに備え、前記第１ハウジングに、前記カバーの内側筒壁部の端部を収容する収容溝が設けられていることを特徴とする電源回路遮断装置に存する。 According to a third aspect of the present invention, a fusible body that melts when an overcurrent flows, a first housing that houses the fusible body, a cover that covers an opening of the first housing, and one end connected to the fusible body. And a pair of terminals provided so that the other end protrudes outside the first housing, a bottom wall portion holding a pair of circuit terminals connectable to each of the pair of terminals, and from the bottom wall portion And a second housing provided with a cylindrical cylindrical wall portion into which the first housing is fitted, and in the power supply circuit breaker, the cover is provided in the cylindrical wall portion of the second housing. The cylindrical inner cylindrical wall portion to be accommodated, the cylindrical outer cylindrical wall portion that accommodates the cylindrical wall portion of the second housing therein, and the inner cylindrical wall portion and the outer cylindrical wall portion are connected to each other. A cover that covers the end surface of the cylindrical wall of the second housing. And de unit, is provided, wherein the second further comprising the placed gasket between the inner tubular wall of the cover and the cylindrical wall portion of the housing, the first housing, of the inner tubular wall of the cover The present invention resides in a power supply circuit breaker having a receiving groove for receiving the end portion .

以上説明したように請求項１記載の発明によれば、フード部を設けることにより、第１ハウジングの筒壁部と第２ハウジングの筒壁部との隙間が覆われるので、この隙間からの水の浸入を防ぎ、防水性を向上させることができた。また、カバーに外側筒壁部を設けることにより、第２ハウジングとカバーとの間の空間に第１ハウジングを収容することができるので、カバーと第２ハウジングとの間に１つパッキンを設けるだけで防水を行うことができ、部品点数削減を図ることができる。   As described above, according to the first aspect of the present invention, by providing the hood portion, the gap between the cylindrical wall portion of the first housing and the cylindrical wall portion of the second housing is covered. It was possible to prevent water from entering and improve waterproofness. Moreover, since the first housing can be accommodated in the space between the second housing and the cover by providing the outer cylindrical wall portion on the cover, only one packing is provided between the cover and the second housing. Can be waterproofed, and the number of parts can be reduced.

請求項１記載の発明によれば、第１ハウジングにパッキンを保持する保持部を設けることにより、第１ハウジングとは別体にパッキンホルダを設ける必要がなく、部品点数を削減することができる。 According to the first aspect of the invention, by providing the holding portion for holding the gasket to the first housing, there is no need to provide a packing holder separately from the first housing, it is possible to reduce the number of parts.

請求項２、３記載の発明によれば、カバーの内側筒壁部の端部を収容溝に収容させるように第１ハウジングに取り付ければよいので、第１ハウジングにカバーを取り付ける作業が容易となる。 According to the second and third aspects of the invention, since the end of the inner cylindrical wall portion of the cover may be attached to the first housing so as to be accommodated in the accommodation groove, the operation of attaching the cover to the first housing is facilitated. .

本発明の電源回路遮断装置の一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment of the power circuit breaker of this invention. 図１に示す電源回路遮断装置の上面図である。It is a top view of the power circuit breaker shown in FIG. 図２のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. は図３中のＢ部の拡大図である。FIG. 4 is an enlarged view of a portion B in FIG. 3. 従来の電源回路遮断装置の一例を示す斜視図である。It is a perspective view which shows an example of the conventional power circuit breaker. 図５に示す電源回路遮断装置の上面図である。It is a top view of the power circuit breaker shown in FIG. 図６のＣ−Ｃ線断面図である。It is CC sectional view taken on the line of FIG. （Ａ）は図７中のＤ部の拡大図であり、（Ｂ）は図７中のＥ部の拡大図である。(A) is the enlarged view of the D section in FIG. 7, (B) is the enlarged view of the E section in FIG.

以下、本発明の一実施の形態にかかる電源回路遮断装置（サービスプラグとも呼ばれる。）を図１〜図４を参照して説明する。本実施形態の電源回路遮断装置１は、電気自動車に搭載されたバッテリから負荷への電源供給を行うための電源回路に組み込まれて、この電源回路を必要に応じて開閉する装置である。   Hereinafter, a power circuit breaker (also called a service plug) according to an embodiment of the present invention will be described with reference to FIGS. The power circuit breaker 1 of this embodiment is a device that is incorporated in a power circuit for supplying power from a battery mounted on an electric vehicle to a load, and opens and closes the power circuit as necessary.

図１〜図４に示すように、電源回路遮断装置１は、過電流が流れると溶断する可溶体２と、可溶体２を収容するハウジング（第１ハウジング）３と、このハウジング３の開口部を覆うカバー４と、一端が可溶体２に接続されると共に他端がハウジング３外に突出するように設けられた一対の端子５と、電源回路の両端にそれぞれ接続される一対の回路端子６を保持するボックス（第２ハウジング）７と、を備えている。   As shown in FIGS. 1 to 4, the power circuit breaker 1 includes a fusible body 2 that melts when an overcurrent flows, a housing (first housing) 3 that houses the fusible body 2, and an opening of the housing 3. , A pair of terminals 5 provided so that one end is connected to the fusible body 2 and the other end protrudes out of the housing 3, and a pair of circuit terminals 6 connected to both ends of the power supply circuit, respectively. And a box (second housing) 7 for holding the.

上記可溶体２には、図３に示すように、一対の端子５をそれぞれ接続するための一対の取付タブ２１が突設されている。この取付タブ２１には、ボルト孔が設けられていて、このボルト孔にボルト８を貫通させた状態で、ボルト８の先端を一対の端子５の一端に設けた圧入孔５１に圧入することにより、一対の端子５の一端が可溶体２に接続される。   As shown in FIG. 3, the fusible body 2 is provided with a pair of mounting tabs 21 for connecting the pair of terminals 5. The mounting tab 21 is provided with a bolt hole, and with the bolt 8 passing through the bolt hole, the tip of the bolt 8 is press-fitted into a press-fit hole 51 provided at one end of the pair of terminals 5. One end of the pair of terminals 5 is connected to the fusible body 2.

上記ハウジング３は、可溶体２が収容される可溶体収容部３１ａ及び一対の端子５の一端がそれぞれ収容される一対の端子収容部３１ｂが形成された底壁部３１と、この底壁部３１の周縁からボックス７に向かって立設された筒状の筒壁部３２と、が設けられている。上記可溶体収容部３１ａは、凹状に形成されている。一対の端子収容部３１ｂは、端子５の長手方向両端が開口となった筒状に設けられている。この一対の端子収容部３１ｂの一方の開口から上記ボルト８が侵入して一対の端子５の圧入孔５１に圧入される。また、この一対の端子収容部３１ｂの他方の開口から一対の端子５の他端がハウジング３外に突出する。   The housing 3 includes a bottom wall portion 31 in which a soluble body housing portion 31a in which the soluble body 2 is housed and a pair of terminal housing portions 31b in which one ends of the pair of terminals 5 are housed, respectively, and the bottom wall portion 31. And a cylindrical cylindrical wall portion 32 erected from the peripheral edge toward the box 7. The said soluble body accommodating part 31a is formed in the concave shape. The pair of terminal accommodating portions 31b are provided in a cylindrical shape in which both ends in the longitudinal direction of the terminal 5 are opened. The bolt 8 enters from one opening of the pair of terminal accommodating portions 31 b and is press-fitted into the press-fitting holes 51 of the pair of terminals 5. Further, the other end of the pair of terminals 5 projects out of the housing 3 from the other opening of the pair of terminal accommodating portions 31 b.

上記ボックス７は、上述した一対の回路端子６を保持する一対の保持部７１ａが設けられた底壁部７１と、この底壁部７１からハウジング３に向かって立設されると共に内部にハウジング３の筒壁部３２が嵌め込まれる筒壁部７２と、が設けられている。上記一対の回路端子６は、雌型に設けられていて、一対の端子５がそれぞれ挿入されると電気的に接続する。一対の回路端子６の一方は、上記バッテリと接続した図示しない電線の端末と接続しており、一対の回路端子６の他方は、上記負荷と接続した図示しない電線の端末と接続している。   The box 7 is provided with a bottom wall portion 71 provided with a pair of holding portions 71 a for holding the pair of circuit terminals 6 described above, and is erected from the bottom wall portion 71 toward the housing 3, and is disposed inside the housing 3. And a cylindrical wall portion 72 into which the cylindrical wall portion 32 is fitted. The pair of circuit terminals 6 are provided in a female shape, and are electrically connected when the pair of terminals 5 are respectively inserted. One of the pair of circuit terminals 6 is connected to a terminal of a wire (not shown) connected to the battery, and the other of the pair of circuit terminals 6 is connected to a terminal of a wire (not shown) connected to the load.

これら一対の回路端子６は、互いに間隔を空けて配されており、これら一対の回路端子６間が導通状態とされることにより電源回路が閉じられ、これら一対の回路端子６間が非導通状態とされることにより前記電源回路が開かれる。上記一対の保持部７１ａは、一対の回路端子６の長手方向両端が開口となった筒状に設けられている。この一対の保持部７１ａの一方の開口から上記一対の端子５が侵入して一対の回路端子６に接続される。また、この一対の保持部７１ａの他方の開口から上記回路端子６に接続された図示しない電線が引き出される。   The pair of circuit terminals 6 are spaced apart from each other, and the power supply circuit is closed by connecting the pair of circuit terminals 6 to each other, and the pair of circuit terminals 6 is not conductive. As a result, the power supply circuit is opened. The pair of holding portions 71a are provided in a cylindrical shape in which both ends in the longitudinal direction of the pair of circuit terminals 6 are opened. The pair of terminals 5 enters from one opening of the pair of holding portions 71 a and is connected to the pair of circuit terminals 6. In addition, an electric wire (not shown) connected to the circuit terminal 6 is drawn out from the other opening of the pair of holding portions 71a.

上記カバー４は、図３に示すように、ハウジング３の上側の開口を覆う上壁部４１と、上壁部４１からハウジング３に向かって突出されると共にボックス７の筒壁部７２内に収容される筒状の内側筒壁部４２と、ボックス７の筒壁部７２を内部に収容する筒状の外側筒壁部４３と、上記内側筒壁部４２及び外側筒壁部４３を連結すると共にボックス７の内側筒壁部４２の端面を覆うフード部４４と、が設けられている。   As shown in FIG. 3, the cover 4 covers an upper wall portion 41 that covers the upper opening of the housing 3, projects from the upper wall portion 41 toward the housing 3, and is accommodated in a cylindrical wall portion 72 of the box 7. The cylindrical inner cylindrical wall portion 42, the cylindrical outer cylindrical wall portion 43 that accommodates the cylindrical wall portion 72 of the box 7, and the inner cylindrical wall portion 42 and the outer cylindrical wall portion 43 are connected to each other. A hood portion 44 that covers the end surface of the inner cylindrical wall portion 42 of the box 7 is provided.

上記ハウジング３の底壁部３１には、カバー４の内側筒壁部４２の端面を収容するリング状の収容溝３１ｃが設けられている。リップパッキン１０は、図４に示すように、ハウジング３の筒壁部３２とカバー４の内側筒壁部４２との間に配置されている。また、リップパッキン１０は、フード部４４とハウジング３に設けた収容溝３１ｃよりも外側の底壁部である保持部３１ｄとの間に挟まれて保持されている。   The bottom wall portion 31 of the housing 3 is provided with a ring-shaped accommodation groove 31 c that accommodates the end surface of the inner cylindrical wall portion 42 of the cover 4. As shown in FIG. 4, the lip packing 10 is disposed between the cylindrical wall portion 32 of the housing 3 and the inner cylindrical wall portion 42 of the cover 4. The lip packing 10 is sandwiched and held between the hood portion 44 and a holding portion 31d which is a bottom wall portion outside the housing groove 31c provided in the housing 3.

上記ハウジング３には、図１に示すように、レバー９の回動中心となる一対の凸部３３が設けられている。レバー９は、この凸部３３を中心として回動自在にハウジング３に取り付けられている。また、レバー９には、ガイド溝９１が設けられていて、このガイド溝９１にボックス７に突設された凸部７３が挿入されている。   As shown in FIG. 1, the housing 3 is provided with a pair of convex portions 33 serving as a rotation center of the lever 9. The lever 9 is attached to the housing 3 so as to be rotatable about the convex portion 33. Further, the lever 9 is provided with a guide groove 91, and a convex portion 73 protruding from the box 7 is inserted into the guide groove 91.

そして、図１に示すようにハウジング３の筒壁部３２がボックス７の筒壁部７２内に嵌合される嵌合位置にあるときに図中反時計周りにレバー９を回動させると、ボックス７の凸部７３がガイド溝９１に沿ってハウジング３がボックス７外に位置づけられる離脱位置まで案内される。この離脱位置では上記一対の端子５と一対の回路端子６との接続が外れて、電源回路が開放される。   Then, when the lever 9 is rotated counterclockwise in the figure when the cylindrical wall portion 32 of the housing 3 is in the fitting position where the cylindrical wall portion 32 of the housing 3 is fitted in the cylindrical wall portion 72 of the box 7 as shown in FIG. The convex portion 73 of the box 7 is guided along the guide groove 91 to the separation position where the housing 3 is positioned outside the box 7. In this detached position, the connection between the pair of terminals 5 and the pair of circuit terminals 6 is disconnected, and the power supply circuit is opened.

一方、離脱位置にあるときに図中時計回りにレバー９を回動させると、ボックス７の凸部７３がガイド溝９１に沿って嵌合位置まで案内される。この嵌合位置では上記一対の回路端子６内にそれぞれ一対の端子５が挿入されて、一対の端子５と一対の回路端子６とがそれぞれ接続され、電源回路が閉じられる。この結果、メンテナンスを安全に行うことができる。即ち、レバー９の凸部３３を中心とした回動動作により、嵌合位置と、離脱位置と、に亘ってハウジング３がボックス７に対して接離する。   On the other hand, when the lever 9 is rotated in the clockwise direction in the figure when in the disengaged position, the convex portion 73 of the box 7 is guided along the guide groove 91 to the fitting position. At this fitting position, the pair of terminals 5 are inserted into the pair of circuit terminals 6, respectively, the pair of terminals 5 and the pair of circuit terminals 6 are connected, and the power supply circuit is closed. As a result, maintenance can be performed safely. That is, the housing 3 comes in contact with and separates from the box 7 across the fitting position and the disengagement position by the rotation operation around the convex portion 33 of the lever 9.

上記構成の電源回路遮断装置１によれば、フード部４４を設けることにより、ハウジング３の筒壁部３２とボックス７の筒壁部７２との隙間が覆われるので、この隙間からの水の浸入を防ぎ、防水性を向上させることができた。また、カバー４に外側筒壁部４３を設けることにより、ボックス７とカバー４との間の空間にハウジング３を収容することができるので、カバー４とボックス７との間に１つリップパッキン１０を設けるだけで防水を行うことができ、部品点数削減を図ることができる。   According to the power circuit breaker 1 having the above configuration, the provision of the hood portion 44 covers the gap between the cylindrical wall portion 32 of the housing 3 and the cylindrical wall portion 72 of the box 7. And improved waterproofness. Further, since the housing 3 can be accommodated in the space between the box 7 and the cover 4 by providing the outer cylindrical wall portion 43 on the cover 4, one lip packing 10 is provided between the cover 4 and the box 7. Waterproofing can be performed simply by providing the number of parts, and the number of parts can be reduced.

上記構成の電源回路遮断装置１によれば、ハウジング３にリップパッキン１０を保持する保持部７１ａを設けることにより、ハウジング３とは別体にパッキンホルダを設ける必要がなく、部品点数を削減することができる。   According to the power circuit breaker 1 having the above configuration, by providing the holding portion 71a for holding the lip packing 10 in the housing 3, it is not necessary to provide a packing holder separately from the housing 3, and the number of parts can be reduced. Can do.

上記構成の電源回路遮断装置１によれば、カバー４の内側筒壁部４２の端部を収容溝３１ｃに収容させるようにハウジング３に取り付ければよいので、ハウジング３にカバー４を取り付ける作業が容易となる。   According to the power circuit breaker 1 having the above-described configuration, the cover 4 can be attached to the housing 3 so that the end of the inner cylindrical wall portion 42 of the cover 4 is accommodated in the accommodation groove 31c. It becomes.

また、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。   Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

１ 電源回路遮断装置
２ 可溶体
３ ハウジング（第１ハウジング）
４ カバー
５ 一対の端子
６ 一対の回路端子
７ ボックス（第２ハウジング）
１０ リップパッキン（パッキン）
３１ｃ 収容溝
３１ｄ 保持部
４２ 内側筒壁部
４３ 外側筒壁部
４４ フード部
７１ 底壁部
７２ 筒壁部 DESCRIPTION OF SYMBOLS 1 Power supply circuit interruption device 2 Soluble body 3 Housing (1st housing)
4 Cover 5 Pair of Terminals 6 Pair of Circuit Terminals 7 Box (Second Housing)
10 Lip packing (packing)
31c Housing groove 31d Holding part 42 Inner cylinder wall part 43 Outer cylinder wall part 44 Hood part 71 Bottom wall part 72 Tube wall part

Claims (3)

過電流が流れると溶断する可溶体と、前記可溶体を収容する第１ハウジングと、前記第１ハウジングの開口を覆うカバーと、一端が前記可溶体と接続されると共に他端が前記第１ハウジング外に突出するように設けられた一対の端子と、前記一対の端子の各々と接続可能な一対の回路端子を保持する底壁部、及び、前記底壁部から立設され内部に前記第１ハウジングが嵌め込まれる筒状の筒壁部、が設けられた第２ハウジングと、を備えた電源回路遮断装置において、
前記カバーに、前記第２ハウジングの筒壁部内に収容される筒状の内側筒壁部と、前記第２ハウジングの筒壁部を内部に収容する筒状の外側筒壁部と、前記内側筒壁部及び前記外側筒壁部を連結すると共に前記第２ハウジングの筒壁部の端面を覆うフード部と、が設けられ、
前記第２ハウジングの筒壁部と前記カバーの内側筒壁部との間に配置されたパッキンをさらに備え、
前記第１ハウジングに、前記フード部との間に前記パッキンを挟んで保持する保持部が設けられている
ことを特徴とする電源回路遮断装置。 A fusible body that melts when an overcurrent flows, a first housing that houses the fusible body, a cover that covers an opening of the first housing, one end connected to the fusible body, and the other end of the first housing. A pair of terminals provided so as to protrude outward, a bottom wall portion holding a pair of circuit terminals connectable to each of the pair of terminals, and the first wall disposed upright from the bottom wall portion In a power circuit breaker provided with a second housing provided with a cylindrical tube wall portion into which the housing is fitted,
The cover has a cylindrical inner cylindrical wall portion that is accommodated in the cylindrical wall portion of the second housing, a cylindrical outer cylindrical wall portion that accommodates the cylindrical wall portion of the second housing therein, and the inner cylinder. A hood portion that connects the wall portion and the outer cylindrical wall portion and covers an end surface of the cylindrical wall portion of the second housing; and
A packing disposed between the cylindrical wall portion of the second housing and the inner cylindrical wall portion of the cover;
A power circuit breaker , wherein the first housing is provided with a holding portion for holding the packing between the hood portion and the first housing . 前記第１ハウジングに、前記カバーの内側筒壁部の端部を収容する収容溝が設けられている
ことを特徴とする請求項１に記載の電源回路遮断装置。 2. The power circuit breaker according to claim 1 , wherein the first housing is provided with a housing groove that houses an end portion of the inner cylindrical wall portion of the cover. 過電流が流れると溶断する可溶体と、前記可溶体を収容する第１ハウジングと、前記第１ハウジングの開口を覆うカバーと、一端が前記可溶体と接続されると共に他端が前記第１ハウジング外に突出するように設けられた一対の端子と、前記一対の端子の各々と接続可能な一対の回路端子を保持する底壁部、及び、前記底壁部から立設され内部に前記第１ハウジングが嵌め込まれる筒状の筒壁部、が設けられた第２ハウジングと、を備えた電源回路遮断装置において、
前記カバーに、前記第２ハウジングの筒壁部内に収容される筒状の内側筒壁部と、前記第２ハウジングの筒壁部を内部に収容する筒状の外側筒壁部と、前記内側筒壁部及び前記外側筒壁部を連結すると共に前記第２ハウジングの筒壁部の端面を覆うフード部と、が設けられ、
前記第２ハウジングの筒壁部と前記カバーの内側筒壁部との間に配置されたパッキンをさらに備え、
前記第１ハウジングに、前記カバーの内側筒壁部の端部を収容する収容溝が設けられている
ことを特徴とする電源回路遮断装置。 A fusible body that melts when an overcurrent flows, a first housing that houses the fusible body, a cover that covers an opening of the first housing, one end connected to the fusible body, and the other end of the first housing. A pair of terminals provided so as to protrude outward, a bottom wall portion holding a pair of circuit terminals connectable to each of the pair of terminals, and the first wall disposed upright from the bottom wall portion In a power circuit breaker provided with a second housing provided with a cylindrical tube wall portion into which the housing is fitted,
The cover has a cylindrical inner cylindrical wall portion that is accommodated in the cylindrical wall portion of the second housing, a cylindrical outer cylindrical wall portion that accommodates the cylindrical wall portion of the second housing therein, and the inner cylinder. A hood portion that connects the wall portion and the outer cylindrical wall portion and covers an end surface of the cylindrical wall portion of the second housing; and
A packing disposed between the cylindrical wall portion of the second housing and the inner cylindrical wall portion of the cover;
The power circuit breaker according to claim 1, wherein the first housing is provided with a housing groove that houses an end portion of the inner cylindrical wall portion of the cover .
JP2009243770A 2009-10-22 2009-10-22 Power circuit breaker Active JP5457136B2 (en)

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JPH0339870Y2 (en) * 1985-07-08 1991-08-22
US5752856A (en) * 1996-07-30 1998-05-19 The Whitaker Corporation Sealed fuse connector
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