JP4361474B2 - Attaching / detaching structure and attaching / detaching structure of electric circuit unit and electric junction box - Google Patents

Attaching / detaching structure and attaching / detaching structure of electric circuit unit and electric junction box Download PDF

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JP4361474B2
JP4361474B2 JP2004369851A JP2004369851A JP4361474B2 JP 4361474 B2 JP4361474 B2 JP 4361474B2 JP 2004369851 A JP2004369851 A JP 2004369851A JP 2004369851 A JP2004369851 A JP 2004369851A JP 4361474 B2 JP4361474 B2 JP 4361474B2
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circuit unit
electric circuit
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junction box
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JP2006180598A (en
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広明 山田
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Yazaki Corp
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Description

本発明は、各種電気部品が取り付けられると共に当該電気部品に電気的に接続されるワイヤハーネスが接続されている電気回路ユニットと、当該電気回路ユニットがカセット式に組み付けられる電気接続箱との着脱方法および着脱構造に関する。   The present invention relates to an electrical circuit unit to which various electrical components are attached and a wire harness that is electrically connected to the electrical component, and a method for attaching and detaching the electrical connection box in which the electrical circuit unit is assembled in a cassette type. And a detachable structure.

従来、自動車等の車両に搭載される電気接続箱は、ヒューズやリレーなどの各種電気部品が取り付けられる複数の取付部を一体的に備え、これら複数の取付部にそれぞれ取り付けられた電気部品および当該電気部品を互いに接続するように電気接続箱内に配索されたバスバーにより所定の回路を形成し、当該回路に電気的に接続されて電気接続箱から導出されたワイヤハーネスを介して車両各部の、例えば点火系、照明系、電子燃料噴射系などのシステムに接続されていた。   2. Description of the Related Art Conventionally, an electrical junction box mounted on a vehicle such as an automobile is integrally provided with a plurality of attachment portions to which various electrical components such as fuses and relays are attached. A predetermined circuit is formed by a bus bar arranged in the electrical junction box so as to connect electrical components to each other, and each part of the vehicle is connected to the circuit via a wire harness that is electrically connected to the circuit and led out from the electrical junction box. For example, it was connected to a system such as an ignition system, an illumination system, and an electronic fuel injection system.

しかし、上記構成の電気接続箱では、電気部品がそれぞれ取り付けられる複数の取付部が一体的に設けられているため、例えばヒューズやリレーの個数に増減があると電気接続箱自体に変更が必要となり、また、バスバーの配索も変更する必要があるため、仕様変更に容易に対応できない問題があった。そこで、各種電気部品を取り付けられたユニットをカセット式に着脱するようにした電気接続箱が知られている（例えば、特許文献１参照。）。   However, in the electrical junction box having the above configuration, a plurality of attachment portions to which electrical components are respectively attached are integrally provided. For example, if the number of fuses or relays increases or decreases, the electrical junction box itself needs to be changed. In addition, since it is necessary to change the arrangement of the bus bars, there is a problem that the specification change cannot be easily handled. Therefore, an electrical junction box is known in which a unit to which various electrical components are attached is detachable in a cassette manner (see, for example, Patent Document 1).

特許文献１に開示されている車載用電気接続箱１００は、図１１に示すように、主電源回路を構成するバスバー１０１を内蔵した主電源ブロック１０２と、前記主電源回路から分岐して、例えば点火系、照明系、電子燃料噴射系などの車両システムに接続される各種分岐回路をそれぞれ内蔵した小型電源ブロック１０３ａ〜ｃと、を備えており、これら小型電源ブロック１０３ａ〜ｃは、主電源ブロック１０２のケース１０４に区画して設けられた嵌合部１０５ａ〜ｃにそれぞれ嵌合し、電気接続箱１００に着脱可能に組み付けられるようになっている。   As shown in FIG. 11, an in-vehicle electrical junction box 100 disclosed in Patent Document 1 branches from a main power supply block 102 including a bus bar 101 constituting a main power supply circuit, and the main power supply circuit. Small power supply blocks 103a to 103c each incorporating various branch circuits connected to a vehicle system such as an ignition system, an illumination system, and an electronic fuel injection system. These small power supply blocks 103a to 103c are main power supply blocks. 102 are respectively fitted to fitting portions 105 a to 105 c divided into cases 104, and are detachably assembled to the electrical connection box 100.

小型電源ブロック１０３ａ〜ｃは、必要なヒューズキャビティ１０６やリレーキャビティ１０７を備え、これらヒューズキャビティ１０６やリレーキャビティ１０７に取り付けられたヒューズやリレーを互いに電気的に接続して所定の分岐回路を形成する分岐バスバーを内部に収納しており、当該分岐バスバーには、主電源ブロック１０２の前記主電源回路に接続される接続端子が設けられている。また、小型電源ブロック１０３ａ〜ｃにはワイヤハーネス結合用のコネクタ装着部１０８がそれぞれ設けられている。   The small power supply blocks 103a to 103c include necessary fuse cavities 106 and relay cavities 107, and the fuses and relays attached to the fuse cavities 106 and the relay cavities 107 are electrically connected to each other to form a predetermined branch circuit. A branch bus bar is housed inside, and a connection terminal connected to the main power supply circuit of the main power supply block 102 is provided in the branch bus bar. Each of the small power supply blocks 103a to 103c is provided with a connector mounting portion 108 for connecting a wire harness.

この電気接続箱１００を組み立てるに際しては、アンダーケース１０９に主電源ブロック１０２を収納し、主電源ブロック１０２のケース１０４の上側から小型電源ブロック１０３ａ〜ｃを嵌合部１０５ａ〜ｃに挿着すると、小型電源ブロック１０３ａ〜ｃの前記接続端子が主電源ブロック１０２の前記主電源回路に接続されると共に、コネクタ装着部１０８が、主電源ブロック１０２のケース１０４およびアンダーケース１０９の整合する位置にそれぞれ設けられた窓１１０，１１１を通して、アンダーケース１０９の下側に露出し、露出したコネクタ装着部１０８にワイヤハーネスが接続され、必要に応じて防水カバー１１２が被せられる。   When assembling the electrical junction box 100, the main power supply block 102 is housed in the undercase 109, and the small power supply blocks 103a to 103c are inserted into the fitting portions 105a to 105c from the upper side of the case 104 of the main power supply block 102. The connection terminals of the small power supply blocks 103a to 103c are connected to the main power supply circuit of the main power supply block 102, and connector mounting portions 108 are provided at positions where the case 104 and the undercase 109 of the main power supply block 102 are aligned. Through the formed windows 110 and 111, the wire harness is exposed to the lower side of the undercase 109, and the exposed connector mounting part 108 is covered with a waterproof cover 112 as necessary.

また、特許文献１に開示されている他の車載用電気接続箱２００は、図１２に示すように、小型電源ブロック１０３ａ〜ｃのコネクタ装着部１０８にワイヤハーネスＷａ〜ｃが予め接続され、小型電源ブロック１０３ａ〜ｃは、主電源ブロック１０２のケース１０４の下側から嵌合部１０５ａ〜ｃに挿着されるようになっており、また、主電源ブロック１０２の前記主電源回路から導出された電線１１３により当該主電源回路と電気的に接続される。そして、一般的には、小型電源ブロック１０３ａ〜ｃが嵌合部１０５ａ〜ｃから脱落することを防止するためにケース１０４の下側は不図示のロアカバーにより塞がれる。
特開平１−２１２６４１号公報（第２−３頁、第１，５図） Further, as shown in FIG. 12, another in-vehicle electrical junction box 200 disclosed in Patent Document 1 has a small size in which wire harnesses Wa to c are connected in advance to the connector mounting portions 108 of the small power supply blocks 103 a to 103 c. The power supply blocks 103 a to 103 c are inserted into the fitting portions 105 a to 105 c from the lower side of the case 104 of the main power supply block 102, and are derived from the main power supply circuit of the main power supply block 102. An electric wire 113 is electrically connected to the main power supply circuit. In general, the lower side of the case 104 is closed by a lower cover (not shown) in order to prevent the small power supply blocks 103a to 103c from dropping from the fitting portions 105a to 105c.
Japanese Patent Laid-Open No. 1-212641 (page 2-3, FIGS. 1 and 5)

上記の電気接続箱１００においては、小型電源ブロック１０３ａ〜ｃは、ケース１０４の上側から嵌合部１０５ａ〜ｃに挿着され、嵌合部１０５ａ〜ｃからケース１０４の上側に抜脱されて、電気接続箱１００に着脱される構成となっている。この場合、電気接続箱１００に小型電源ブロック１０３ａ〜ｃを組み付ける際に、上述のように小型電源ブロック１０３ａ〜ｃを嵌合部１０５ａ〜ｃに挿着した後に小型電源ブロック１０３ａ〜ｃのコネクタ装着部１０８にケース１０４の下側からワイヤハーネスを接続するため、小型電源ブロック１０３ａ〜ｃに接続されるまでは複数のワイヤハーネスが纏まりなく存在してしまい、作業が複雑となる虞があった。また、ワイヤハーネスをケース１０４の上側に一旦引き出して小型電源ブロック１０３ａ〜ｃのコネクタ装着部１０８に接続した後に小型電源ブロック１０３ａ〜ｃを嵌合部１０５ａ〜ｃに挿着することも考えられるが、ワイヤハーネスを一旦引き出す必要があるため、やはり作業が複雑となる虞があった。   In the electrical junction box 100 described above, the small power supply blocks 103a to 103c are inserted into the fitting portions 105a to 105c from the upper side of the case 104 and removed from the fitting portions 105a to 105c to the upper side of the case 104. The electric connection box 100 is detachably attached. In this case, when the small power supply blocks 103a to 103c are assembled to the electrical connection box 100, the small power supply blocks 103a to 103c are inserted into the fitting portions 105a to 105c as described above, and then the small power supply blocks 103a to 103c are attached to the connectors. Since the wire harness is connected to the portion 108 from the lower side of the case 104, a plurality of wire harnesses exist without being gathered until they are connected to the small power supply blocks 103a to 103c, and the work may be complicated. In addition, it is conceivable that the wire harness is pulled out to the upper side of the case 104 and connected to the connector mounting portion 108 of the small power supply block 103a-c, and then the small power supply block 103a-c is inserted into the fitting portion 105a-c. Since it is necessary to pull out the wire harness once, there is a risk that the operation becomes complicated.

また、上記の電気接続箱２００においては、小型電源ブロック１０３ａ〜ｃは、ケース１０４の下側から嵌合部１０５ａ〜ｃに挿着される構成となっており、このような構成において一般的には、小型電源ブロック１０３ａ〜ｃは、嵌合部１０５ａ〜ｃからケース１０４の下側に抜脱されて、電気接続箱２００に着脱されるようになっている。この場合、例えばメンテナンスなどで電気接続箱２００から小型電源ブロック１０３ａ〜ｃを取り外す際に、ケース１０４の下側を塞いでいるロアカバーを取り外す必要があると共に、電気接続箱２００においてワイヤハーネスが導出されている側での作業となるため、作業が複雑となる虞があった。   Further, in the electrical junction box 200 described above, the small power supply blocks 103a to 103c are configured to be inserted into the fitting portions 105a to 105c from the lower side of the case 104, and generally in such a configuration. The small power supply blocks 103 a to 103 c are removed from the fitting portions 105 a to 105 c to the lower side of the case 104 to be attached to and detached from the electrical connection box 200. In this case, for example, when removing the small power supply blocks 103a to 103c from the electrical connection box 200 for maintenance or the like, it is necessary to remove the lower cover closing the lower side of the case 104, and a wire harness is led out in the electrical connection box 200. Since the work is performed on the other side, the work may be complicated.

このように、各種電気部品が取り付けられると共に当該電気部品に電気的に接続されるワイヤハーネスが接続されている電気回路ユニット（上記の小型電源ブロック１０３ａ〜ｃなど）がカセット式に組み付けられる従来の電気接続箱においては、電気回路ユニットを電気接続箱の片側から組み付け、同一側に取り外す構成であるため、組み付け時または取り外し時のいずれかに複雑な作業を伴う虞があった。   As described above, an electric circuit unit (such as the above-described small power supply blocks 103a to 103c) to which various electric parts are attached and a wire harness electrically connected to the electric parts is connected in a cassette manner. In the electric junction box, the electric circuit unit is assembled from one side of the electric junction box and removed from the same side, and therefore, there is a possibility that complicated work is involved in either assembling or removing.

本発明は、上述した課題に鑑みてなされたものであり、その目的は、組み付け時および取り外し時の作業をいずれも容易に行うことができる電気回路ユニットと電気接続箱との着脱方法および着脱構造を提供することにある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an attachment / detachment method and an attachment / detachment structure between an electric circuit unit and an electric junction box, which can easily perform both assembly and removal operations. Is to provide.

上述した目的を達成するために、本発明に係る電気回路ユニットと電気接続箱との着脱方法は、
各種電気部品が取り付けられると共に当該電気部品に電気的に接続されるワイヤハーネスが接続されている、略直方体状の電気回路ユニットと、当該電気回路ユニットがカセット式に組み付けられる電気接続箱との着脱方法であって、前記電気接続箱に当該電気接続箱への前記電気回路ユニットの組み付け方向の前後に開口する収容部を設け、前記収容部の内側面と前記電気回路ユニットの外側面に前記収容部内に前記電気回路ユニットを係止するための係止手段を設け、前記電気回路ユニットを前記電気接続箱に組み付ける際に、前記電気回路ユニットを前記ワイヤハーネスが導出される側の開口から前記収容部内に挿着し、前記収容部の係合凸部に前記電気回路ユニットの弾性係止片が下側から係合すると共に、前記収容部の内側面に設けられた弾性係止片の係止部に前記電気回路ユニットの係合段部が下側から係合する前記係止手段により、前記電気回路ユニットを前記収容部内に係止し、また、前記挿着側とは反対側の開口からの治具の挿入により、前記収容部の係合凸部に下側から係合している前記電気回路ユニットの弾性係止片の係合状態が解除されると共に、前記収容部の内側面に設けられた弾性係止片の係止部に下側から係合している前記電気回路ユニットの係合段部の係合状態が解除され、前記収容部内に挿着された前記電気回路ユニットを前記挿着側とは反対側の開口から抜き出し、さらに、抜き出された前記電気回路ユニットを前記挿着側とは反対側の開口から前記収容部内に挿着し前記係止手段により係止することを特徴としている。 In order to achieve the above-described object, a method for attaching and detaching the electric circuit unit and the electric junction box according to the present invention includes:
Attachment and detachment of a substantially rectangular parallelepiped electric circuit unit to which various electric parts are attached and a wire harness electrically connected to the electric part, and an electric junction box in which the electric circuit unit is assembled in a cassette type In the method, the electrical connection box is provided with a storage portion that opens before and after the assembly direction of the electrical circuit unit to the electrical connection box, and the storage is provided on the inner surface of the storage portion and the outer surface of the electrical circuit unit. A locking means for locking the electric circuit unit is provided in the section, and when the electric circuit unit is assembled to the electric junction box, the electric circuit unit is received from the opening on the side from which the wire harness is led out. was inserted into section, along with the elastic latching pieces of the electric circuit unit engaging convex portion of the receiving portion is engaged from the lower side, set to the inner surface of the housing part The said locking means engaging stepped portions are engaged from the lower side of the electric circuit unit to the engaging portion of the obtained elastic latching pieces, engages the electrical circuit unit to the receptacle, also, the interpolation By inserting a jig from the opening opposite to the wearing side, the engagement state of the elastic locking piece of the electric circuit unit engaged from the lower side with the engagement convex portion of the housing portion is released. At the same time, the engagement state of the engagement step portion of the electric circuit unit engaged from the lower side with the engagement portion of the elastic engagement piece provided on the inner surface of the accommodation portion is released, and The inserted electric circuit unit is extracted from the opening opposite to the insertion side, and the extracted electric circuit unit is inserted into the housing portion from the opening opposite to the insertion side. It is characterized by being locked by the locking means.

また、上述した目的を達成するために、本発明に係る電気回路ユニットと電気接続箱との着脱構造は、各種電気部品が取り付けられると共に当該電気部品に電気的に接続されるワイヤハーネスが接続されている、略直方体状の電気回路ユニットと、当該電気回路ユニットがカセット式に組み付けられる電気接続箱との着脱構造であって、前記電気接続箱には当該電気接続箱への前記電気回路ユニットの組み付け方向の前後に開口する収容部が設けられ、また、前記収容部の内側面と前記電気回路ユニットの外側面に前記収容部内に前記電気回路ユニットを係止するための係止手段が設けられ、前記電気回路ユニットが前記電気接続箱に組み付けられる際に、前記電気回路ユニットが前記ワイヤハーネスが導出される側の開口から前記収容部に挿着され、前記収容部の係合凸部に前記電気回路ユニットの弾性係止片が下側から係合すると共に、前記収容部の内側面に設けられた弾性係止片の係止部に前記電気回路ユニットの係合段部が下側から係合する前記係止手段により、前記電気回路ユニットが前記収容部内に係止され、また、前記挿着側とは反対側の開口からの治具の挿入により、前記収容部の係合凸部に下側から係合している前記電気回路ユニットの弾性係止片の係合状態が解除されると共に、前記収容部の内側面に設けられた弾性係止片の係止部に下側から係合している前記電気回路ユニットの係合段部の係合状態が解除され、前記収容部内に挿着された前記電気回路ユニットが前記挿着側とは反対側の開口から抜き出され、さらに、抜き出された前記電気回路ユニットが前記挿着側とは反対側の開口から前記収容部内に挿着されて前記係止手段により係止されることを特徴としている。 In order to achieve the above-described object, the electric circuit unit according to the present invention has an attachment / detachment structure between the electric circuit unit and the electric junction box to which various electric parts are attached and a wire harness electrically connected to the electric parts is connected. An electric circuit unit having a substantially rectangular parallelepiped shape and an electric connection box to which the electric circuit unit is assembled in a cassette type, wherein the electric connection box has the electric circuit unit connected to the electric connection box. A receiving portion that opens before and after the assembling direction is provided, and locking means for locking the electric circuit unit in the receiving portion is provided on the inner side surface of the receiving portion and the outer side surface of the electric circuit unit. When the electric circuit unit is assembled to the electric junction box, the electric circuit unit is moved from the opening on the side from which the wire harness is led out to the housing portion. Is deposited, the with elastic latching pieces of the electric circuit unit is engaged from the lower side to the engaging convex portion of the accommodating portion, the the engaging portion of the resilient locking pieces provided on the inner surface of the housing part The electric circuit unit is locked in the housing portion by the locking means with which the engaging step portion of the electric circuit unit is engaged from below , and a jig from the opening opposite to the insertion side. Insertion of the elastic engagement piece of the electric circuit unit engaged with the engagement convex portion of the housing portion from the lower side is released and the inner surface of the housing portion is provided. The engagement state of the engagement step portion of the electric circuit unit engaged from the lower side with the locking portion of the elastic locking piece is released, and the electric circuit unit inserted into the housing portion is inserted. The electrical circuit unit extracted from the opening on the side opposite to the side is further extracted. Serial is characterized by being locked by the locking means is inserted into the receptacle from the side opposite the opening to the insertion side.

上記のように構成された電気回路ユニットと電気接続箱との着脱方法および着脱構造によれば、電気回路ユニットを電気接続箱に組み付ける際に、ワイヤハーネスが導出される側の開口から収容部に挿着されるので、予めワイヤハーネスを電気回路ユニットに接続した上で当該電気回路ユニットを電気接続箱に組み付けることができ、従来のように複数のワイヤハーネスが纏まりなく存在してしまうことがなく、また、ワイヤハーネスを一旦引き出す必要もないので、電気回路ユニットを電気接続箱に組み付ける作業が容易となる。   According to the attachment / detachment method and attachment / detachment structure between the electric circuit unit and the electric junction box configured as described above, when the electric circuit unit is assembled to the electric junction box, the wire harness is led out from the opening on the side to the accommodating portion. Since the wire harness is connected to the electric circuit unit in advance, the electric circuit unit can be assembled to the electric connection box, and a plurality of wire harnesses do not exist together in a conventional manner. In addition, since it is not necessary to pull out the wire harness once, the work of assembling the electric circuit unit to the electric junction box becomes easy.

そして、収容部に収容された電気回路ユニットを挿着側とは反対側の開口から抜挿することができるので、例えばメンテナンスなどで電気回路ユニットを電気接続箱から取り外し、再度、電気接続箱に組み付ける際には、電気接続箱のワイヤハーネスが密集している側での作業を回避することができ、その作業が容易となる。   And since the electric circuit unit accommodated in the accommodating portion can be inserted / removed from the opening opposite to the insertion side, the electric circuit unit is removed from the electric connection box for maintenance, for example, and again in the electric connection box. When assembling, the work on the side where the wire harnesses of the electrical junction box are dense can be avoided, and the work becomes easy.

以下、本発明に係る好適な実施形態を図面に基づいて詳細に説明する。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.

図１は本発明の電気回路ユニットと電気接続箱との着脱方法が適用される電気回路ユニットと電気接続箱との着脱構造の一実施形態を示す分解斜視図、図２は図１に示す電気回路ユニットが電気接続箱に装着された状態での平面図、図３は図２におけるIII-III矢視断面図、図４は図２におけるIV-IV矢視断面図であって電気回路ユニットを電気接続箱の収容部に挿着する過程を示す断面図、図５は図２におけるV-V矢視断面図であって電気回路ユニットを電気接続箱の収容部に挿着する過程を示す断面図、図６は図２にVI-VI矢視断面図であって電気回路ユニットを電気接続箱の収容部から抜脱する過程を示す断面図、図７は図３における点線円VIIで囲まれた領域の要部断面図であって電気回路ユニットを電気接続箱の収容部から抜脱する過程を示す断面図、図８は図４における点線円VIIIで囲まれた領域の要部拡大断面図、図９は図６における点線円IXで囲まれた領域の要部拡大断面図、図１０は図７における点線円Xで囲まれた領域の要部拡大断面図である。   FIG. 1 is an exploded perspective view showing an embodiment of an attachment / detachment structure between an electric circuit unit and an electric connection box to which the electric circuit unit and the electric connection box according to the present invention are applied. FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a cross-sectional view taken along the line VV in FIG. 2 and shows a process of inserting the electric circuit unit into the housing part of the electrical connection box; 6 is a cross-sectional view taken along the line VI-VI in FIG. 2, showing a process of removing the electric circuit unit from the housing of the electric junction box, and FIG. 7 is a region surrounded by a dotted circle VII in FIG. It is principal part sectional drawing of this, Comprising: The process which removes an electric circuit unit from the accommodating part of an electrical junction box is shown FIG. 8 is an enlarged cross-sectional view of a main part of a region surrounded by a dotted circle VIII in FIG. 4, FIG. 9 is an enlarged cross-sectional view of a main part of a region surrounded by a dotted circle IX in FIG. FIG. 3 is an enlarged cross-sectional view of a main part of a region surrounded by a dotted circle X in FIG.

図１〜図３に示されるように、本実施形態の電気回路ユニットと電気接続箱との着脱構造１は、電気接続箱２と、この電気接続箱２にカセット式に組み付けられる電気回路ユニット５とを備えている。電気接続箱２は合成樹脂製のハウジング３を備え、このハウジング３には、上述した従来の電気接続箱１００と同様に主電源回路が設けられている。そして電気回路ユニット５には、例えば車両各部の点火系、照明系、電子燃料噴射系などの車両システムおよびハウジング３に設けられている前記主電源回路にワイヤハーネス６を介して接続される分岐回路が設けられている。   As shown in FIGS. 1 to 3, the attachment / detachment structure 1 between the electric circuit unit and the electric junction box according to the present embodiment includes an electric junction box 2 and an electric circuit unit 5 that is assembled to the electric junction box 2 in a cassette manner. And. The electrical junction box 2 includes a housing 3 made of synthetic resin, and the housing 3 is provided with a main power circuit as in the conventional electrical junction box 100 described above. The electric circuit unit 5 includes a branch circuit connected to a vehicle system such as an ignition system, an illumination system, and an electronic fuel injection system of each part of the vehicle and the main power supply circuit provided in the housing 3 via a wire harness 6. Is provided.

電気回路ユニット５は合成樹脂製の略直方体状のケース８を備えており、このケース８の図１中上端部の内部には、ケース８の上端面に開口し前記分岐回路に必要なリレーやヒューズ等の電気部品を取り付けるための複数の取付孔１１が設けられている。また、ケース８の下端部の内部には、ケース８の下端面に開口すると共に各取付孔１１にそれぞれ連通し、ワイヤハーネス６のコネクタ７に設けられた複数の接続部７ａが挿入される複数の挿入孔１２が設けられている。   The electric circuit unit 5 is provided with a substantially rectangular parallelepiped case 8 made of a synthetic resin. Inside the upper end portion of the case 8 in FIG. A plurality of mounting holes 11 for mounting electrical components such as fuses are provided. In addition, a plurality of connection portions 7 a that open to the lower end surface of the case 8 and communicate with the mounting holes 11 and are provided in the connector 7 of the wire harness 6 are inserted into the lower end portion of the case 8. Insertion hole 12 is provided.

取付孔１１に取り付けられた電気部品（不図示）のリード端子は、挿入孔１２内に突出し、挿入孔１２に挿入された接続部７ａの内部に収納されているワイヤハーネス６の各電線６ａの接続端子（不図示）に接続される。また、ケース８の上端面はカバー９により覆われている。   A lead terminal of an electrical component (not shown) attached to the attachment hole 11 protrudes into the insertion hole 12, and each of the electric wires 6 a of the wire harness 6 accommodated in the connection portion 7 a inserted into the insertion hole 12. Connected to a connection terminal (not shown). The upper end surface of the case 8 is covered with a cover 9.

電気接続箱２のハウジング３には電気回路ユニット５を収容する収容部４が一体成形されており、この収容部４は、電気回路ユニット５の外側形状に略対応した略直方体状の内側形状をもって上下（即ち、電気接続箱２への電気回路ユニット５の組み付け方向の前後）に開口した枠状に形成されている。電気回路ユニット５は、収容部４の前記開口から上下方向に収容部４内に挿入されて、電気接続箱２に組み付けられる。   A housing part 4 for housing the electric circuit unit 5 is integrally formed in the housing 3 of the electrical junction box 2, and the housing part 4 has a substantially rectangular parallelepiped inner shape substantially corresponding to the outer shape of the electric circuit unit 5. It is formed in a frame shape that opens vertically (ie, before and after the assembly direction of the electric circuit unit 5 to the electric junction box 2). The electric circuit unit 5 is inserted into the housing portion 4 in the vertical direction from the opening of the housing portion 4 and assembled to the electrical junction box 2.

図２に示される平面視において長辺を含む収容部４の一対の内側面には、長手方向の一方の端部において上下方向に伸びるの一組のガイドリブ１３と、長手方向の中央部において上下方向に伸びるガイドリブ１５がそれぞれ突設されている。また、電気回路ユニット５が収容部４内に収容された際に収容部４のガイドリブ１３，１５が設けられた一対の内側面にそれぞれ相対する電気回路ユニット５のケース８の外側面には、収容部４のガイドリブ１３にそれぞれ係合するガイドリブ１４、および収容部４のガイドリブ１５にそれぞれ係合するガイドリブ１６が突設されている。   A pair of inner side surfaces of the accommodating portion 4 including the long side in the plan view shown in FIG. Each of the guide ribs 15 extending in the direction protrudes. Further, when the electric circuit unit 5 is accommodated in the accommodating portion 4, the outer surface of the case 8 of the electric circuit unit 5 that faces the pair of inner surfaces provided with the guide ribs 13 and 15 of the accommodating portion 4, A guide rib 14 that engages with each of the guide ribs 13 of the housing portion 4 and a guide rib 16 that engages with each of the guide ribs 15 of the housing portion 4 are projected.

これらのガイドリブ１３〜１６は、互いに係合して、電気回路ユニット５が収容部４内に挿入される際には電気回路ユニット５を上下方向に案内すると共に、電気回路ユニット５が収容部４内に挿入された際には電気回路ユニット５が収容部４内でガタつくことがないように電気回路ユニット５を支持する。   These guide ribs 13 to 16 are engaged with each other to guide the electric circuit unit 5 in the vertical direction when the electric circuit unit 5 is inserted into the accommodating portion 4, and the electric circuit unit 5 is accommodated in the accommodating portion 4. The electric circuit unit 5 is supported so that the electric circuit unit 5 does not rattle in the housing portion 4 when inserted into the housing.

図２および図４に示されるように、収容部４の長辺を含む前記一対の内側面には、ガイドリブ１３とガイドリブ１５との間に弾性を有する係止片１７がそれぞれ突設されている。この弾性係止片１７は、収容部４の一方の内側面に接続し、対向する他方の内側面に向かって突出している基端部１７ａと、基端部１７ａから略直角に屈曲し、基端部１７ａが接続している収容部４の内側面と隙間をおいて上方向に伸びる先端部１７ｂとを有しており、図８に示されるように、基端部１７ａが接続している収容部４の内側面に先端部１７ｂの突端が接近するように、主に屈曲部において弾性変形可能とされている。また、先端部１７ｂの突端には、対向する他方の内側面に向かってさらに突出している係止部１７ｃが設けられており、この係止部１７ｃの下端面は対向する他方の内側面に向かうに従って上方向に傾斜して形成されている。   As shown in FIGS. 2 and 4, a pair of inner side surfaces including the long side of the accommodating portion 4 is provided with a locking piece 17 having elasticity between the guide rib 13 and the guide rib 15. . This elastic locking piece 17 is connected to one inner side surface of the accommodating portion 4 and is bent at a substantially right angle from the base end portion 17a and the base end portion 17a projecting toward the other inner side surface. It has an inner side surface of the accommodating portion 4 to which the end portion 17a is connected and a distal end portion 17b that extends upward with a gap between them, and the proximal end portion 17a is connected as shown in FIG. The bent portion is mainly elastically deformable so that the protruding end of the distal end portion 17b approaches the inner surface of the housing portion 4. In addition, a locking portion 17c is further provided at the protruding end of the tip portion 17b so as to project further toward the other opposing inner surface, and the lower end surface of the locking portion 17c faces the other opposing inner surface. And is inclined upward.

そして、電気回路ユニット５が収容部４内に収容された際に収容部４の弾性係止片１７が設けられた内側面に相対する電気回路ユニット５のケース８の外側面には、弾性係止片１７の先端部１７ｂの突端に設けられた係止部１７ｃに上側から係合する係合凸部１８が設けられており、この係合凸部１８の上端面は係止部１７ｃの傾斜した下端面と略同一角度に傾斜して形成されている。   Then, when the electric circuit unit 5 is accommodated in the accommodating portion 4, the outer surface of the case 8 of the electric circuit unit 5 opposite to the inner surface of the accommodating portion 4 provided with the elastic locking piece 17 is elastically engaged. An engaging convex portion 18 that engages from above is provided on the engaging portion 17c provided at the protruding end of the distal end portion 17b of the stopper piece 17, and the upper end surface of the engaging convex portion 18 is inclined to the engaging portion 17c. The lower end surface is inclined at substantially the same angle.

図２および図５に示されるように、収容部４の長辺を含む前記一対の内側面の一方には、ガイドリブ１５を挟んで係止片１７とは反対側に、弾性を有する係止片１９が突設されている。この弾性係止片１９は、収容部４の一方の内側面に接続され、対向する他方の内側面に向かって突出している基端部１９ａと、基端部１９ａから略直角に屈曲し、基端部１９ａが接続されている収容部４の内側面と隙間をもって上方向に伸びる先端部１９ｂとを有しており、基端部１９ａが接続されている収容部４の内側面に先端部１９ｂの突端が接近するように、主に屈曲部において弾性変形可能とされている。先端部１９ｂの突端には、対向する他方の内側面に向かってさらに突出している係止部１９ｃが設けられており、この係止部１９ｃの下端面は、対向する他方の内側面に向かうに従って上方向に傾斜して形成されている。   As shown in FIGS. 2 and 5, one of the pair of inner side surfaces including the long side of the accommodating portion 4 has an elastic locking piece on the opposite side of the locking piece 17 with the guide rib 15 interposed therebetween. 19 is projected. The elastic locking piece 19 is connected to one inner side surface of the accommodating portion 4 and is bent at a substantially right angle from the base end portion 19a that protrudes toward the other inner side surface facing the base end portion 19a. It has an inner side surface of the accommodating portion 4 to which the end portion 19a is connected and a distal end portion 19b extending upward with a gap, and a distal end portion 19b on the inner side surface of the accommodating portion 4 to which the proximal end portion 19a is connected. It is possible to be elastically deformed mainly at the bent portion so that the protruding end of each of them approaches. The protruding end of the tip portion 19b is provided with a locking portion 19c that further protrudes toward the other opposing inner surface, and the lower end surface of the locking portion 19c is directed toward the other opposing inner surface. Inclined upward.

そして、電気回路ユニット５が収容部４内に収容された際に収容部４の弾性係止片１９が設けられた内側面に相対する電気回路ユニット５のケース８の外側面には、弾性係止片１９の先端部１９ｂの突端に設けられた係止部１９ｃに上側から係合する係合凸部２０が設けられており、この係合凸部２０の上端面は、係止部１９ｃの傾斜した下端面と略同一角度に傾斜して形成されている。   When the electric circuit unit 5 is accommodated in the accommodating portion 4, the outer surface of the case 8 of the electric circuit unit 5 facing the inner surface of the accommodating portion 4 provided with the elastic locking piece 19 is elastically engaged. An engaging convex portion 20 that engages from above is provided on the engaging portion 19c provided at the protruding end of the distal end portion 19b of the stopper piece 19, and the upper end surface of the engaging convex portion 20 is the upper end surface of the engaging portion 19c. It is formed to be inclined at substantially the same angle as the inclined lower end surface.

図２および図６に示されるように、収容部４の長辺を含む前記一対の内側面には、一組のガイドリブ１３の間に、対向する他方の内側面に向かって突出している係合凸部２１がそれぞれ設けられており、この係合凸部２１の上端面は、対向する他方の内側面に向かうに従って下方向に傾斜して形成されている。   As shown in FIGS. 2 and 6, the pair of inner side surfaces including the long side of the accommodating portion 4 are engaged between the pair of guide ribs 13 so as to protrude toward the other inner side surface facing each other. Each of the convex portions 21 is provided, and the upper end surface of the engaging convex portion 21 is formed so as to be inclined downward toward the other opposite inner side surface.

そして、電気回路ユニット５が収容部４内に収容された際に収容部４の係合凸部２１が設けられた内側面に相対する電気回路ユニット５のケース８の外側面には、収容部４の係合凸部２１に下側から係合する弾性係止片２２が設けられている。この弾性係止片２２は、ケース８の外側面に接続され、相対する収容部４の内側面に向かって突出している基端部２２ａと、基端部２２ａから略直角に屈曲し、基端部２２ａが接続されているケース８の外側面と隙間をもって上方向に伸びる先端部２２ｂとを有しており、図９に示されるように、基端部２２ａが接続されているケース８の外側面に先端部２２ｂの突端が接近するように、主に屈曲部において弾性変形可能とされている。先端部２２ｂの突端には、相対する収容部４の内側面に向かってさらに突出している係止部２２ｃが設けられており、この係止部２２の下端面は、収容部４の係合凸部２１の傾斜した上端面と略同一角度に傾斜して形成されている。   When the electric circuit unit 5 is accommodated in the accommodating portion 4, the accommodating portion is provided on the outer surface of the case 8 of the electric circuit unit 5, which is opposed to the inner surface provided with the engaging convex portion 21 of the accommodating portion 4. An elastic locking piece 22 that engages with the four engaging projections 21 from below is provided. The elastic locking piece 22 is connected to the outer side surface of the case 8, and protrudes toward the inner side surface of the opposing accommodating portion 4. The elastic locking piece 22 is bent at a substantially right angle from the base end portion 22 a. 9 has an outer side surface of the case 8 to which the portion 22a is connected and a distal end portion 22b extending upward with a gap. As shown in FIG. 9, the outer side of the case 8 to which the base end portion 22a is connected The bent portion is mainly elastically deformable so that the protruding end of the tip 22b approaches the side surface. A locking portion 22c that protrudes further toward the inner side surface of the opposing storage portion 4 is provided at the protruding end of the distal end portion 22b, and the lower end surface of the locking portion 22 is an engagement protrusion of the storage portion 4. It is formed to be inclined at substantially the same angle as the inclined upper end surface of the portion 21.

また、図２に示される平面視において短辺を含む収容部４の一対の内側面のうち係合凸部２２とは離間した内側面には、図２，図３および図７に示されるように、弾性を有する係止片２３が突設されている。この弾性係止片２３は、収容部４の一方の内側面に接続され、対向する他方の内側面に向かって突出している基端部２３ａと、基端部２３ａから略直角に屈曲し、基端部２３ａが接続されている内側面と隙間をもって下方向に伸びる先端部２３ｂとを有しており、図１０に示されるように、基端部２３ａが接続されている収容部４の内側面に先端部２３ｂの突端が接近するように、主に屈曲部において弾性変形可能とされている。先端部２３ｂの突端には、対向する他方の内側面に向かってさらに突出している係止部２３ｃが設けられており、この係止部２３ｃの上端面は、対向する他方の内側面に向かうに従って下方向に傾斜して形成されている。   Further, of the pair of inner side surfaces of the accommodating portion 4 including the short side in the plan view shown in FIG. 2, the inner side surfaces separated from the engagement convex portions 22 are as shown in FIGS. Further, a locking piece 23 having elasticity is projected. The elastic locking piece 23 is connected to one inner side surface of the accommodating portion 4 and is bent at a substantially right angle from the base end portion 23a protruding toward the other inner side surface facing the base end portion 23a. The inner side surface of the accommodating part 4 which has the inner side surface to which the edge part 23a is connected, and the front-end | tip part 23b extended in a downward direction with a clearance gap are shown in FIG. It is possible to be elastically deformed mainly at the bent portion so that the tip of the tip portion 23b approaches. The protruding end of the tip portion 23b is provided with a locking portion 23c that further protrudes toward the other opposing inner surface, and the upper end surface of the locking portion 23c is directed toward the other opposing inner surface. Inclined downward.

そして、電気回路ユニット５が収容部４内に収容された際に弾性係止片２３が設けられた収容部４の内側面に相対する電気回路ユニット５のケース８の外側面には、弾性係止片２３の先端部２３ｂの突端に設けられた係止部２３ｃに下側から係合する係合段部２４が設けられている。   When the electric circuit unit 5 is accommodated in the accommodating portion 4, the outer surface of the case 8 of the electric circuit unit 5, which is opposed to the inner surface of the accommodating portion 4 provided with the elastic locking piece 23, is elastically engaged. An engaging step portion 24 is provided to engage with a locking portion 23c provided at the protruding end of the distal end portion 23b of the stopper piece 23 from below.

かかる構成の電気回路ユニット５と電気接続箱２との着脱構造１において、電気回路ユニット５は、図１に示されるように、電気回路ユニット５の下端部に接続されているワイヤハーネス６が導出される側となる収容部４の下側の開口から収容部４内に挿着される。   In the detachable structure 1 between the electric circuit unit 5 and the electric junction box 2 having such a configuration, the electric circuit unit 5 has a wire harness 6 connected to the lower end portion of the electric circuit unit 5 as shown in FIG. It is inserted into the accommodating part 4 from the opening on the lower side of the accommodating part 4 serving as the side to be processed.

具体的には図４および図５に示されるように、電気回路ユニット５が収容部４の下側の開口から収容部４内に挿入されるに伴って、電気回路ユニット５の外側面に設けられた係合凸部１８，２０が、その上端面において、収容部４の内側面に設けられた対応する弾性係止片１７，１９の係止部１７ｃ，１９ｃの下端面に当接する。このとき、弾性係止片１７，１９の係止部１７ｃ，１９ｃの下端面は上述のとおり傾斜して形成されているので、弾性係止片１７，１９は接続している収容部４の内側面に先端部１７ｂ，１９ｂの突端が接近するように弾性変形し、これにより、電気回路ユニット５の進入が許容される。   Specifically, as shown in FIGS. 4 and 5, the electrical circuit unit 5 is provided on the outer surface of the electrical circuit unit 5 as the electrical circuit unit 5 is inserted into the housing part 4 from the lower opening of the housing part 4. The formed engaging projections 18 and 20 come into contact with the lower end surfaces of the locking portions 17c and 19c of the corresponding elastic locking pieces 17 and 19 provided on the inner side surface of the housing portion 4 at the upper end surface. At this time, since the lower end surfaces of the locking portions 17c and 19c of the elastic locking pieces 17 and 19 are inclined as described above, the elastic locking pieces 17 and 19 are connected to the inside of the housing portion 4 to which they are connected. It elastically deforms so that the protruding ends of the tip portions 17b and 19b approach the side surface, thereby allowing the electric circuit unit 5 to enter.

そして、電気回路ユニット５が収容部４内に完全に挿入されると、係合凸部１８，２０は、弾性係止片１７，１９の係止部１７ｃ，１９ｃを乗り越え、弾性変形から復帰した弾性係止片１７，１９の係止部１７ｃ，１９ｃに上側から係合し、これにより、電気回路ユニット５は収容部４の下側の開口からの脱抜を阻止される。また、このとき、図６および図７に示されるように、電気回路ユニット５の外側面に設けられた弾性係止片２２の先端係止部２２ｃが収容部４の内側面に設けられた係合凸部２１に下側から係合し、同時に、電気回路ユニット５の外側面に設けられた係合段部２４が収容部４の内側面に設けられた弾性係止片２３の係止部２３ｃに下側から係合し、これにより、電気回路ユニット５は収容部４の上側の開口からの脱抜も阻止される。   When the electric circuit unit 5 is completely inserted into the housing portion 4, the engaging projections 18 and 20 get over the locking portions 17c and 19c of the elastic locking pieces 17 and 19 and return from the elastic deformation. The engaging portions 17c and 19c of the elastic locking pieces 17 and 19 are engaged from above, whereby the electric circuit unit 5 is prevented from being removed from the lower opening of the accommodating portion 4. Further, at this time, as shown in FIGS. 6 and 7, the front end locking portion 22 c of the elastic locking piece 22 provided on the outer surface of the electric circuit unit 5 is provided on the inner surface of the housing portion 4. At the same time, the engaging step portion 24 provided on the outer surface of the electric circuit unit 5 is engaged with the mating convex portion 21 from the lower side, and the engaging portion of the elastic locking piece 23 provided on the inner surface of the accommodating portion 4. The electrical circuit unit 5 is also prevented from being pulled out from the opening on the upper side of the housing portion 4.

収容部４内に収容された電気回路ユニット５を電気接続箱２から取り外すに際しては、例えば収容部４の上側の開口から電気回路ユニット５の外側面と収容部４の内側面との間に治具が挿入され、収容部４の係合凸部２１に下側から係合している電気回路ユニット５の弾性係止片２２の係合状態が解除されると共に、収容部４の内側面に設けられた弾性係止片２３の係止部２３ｃに下側から係合している電気回路ユニット５の係合段部２４の係合状態が解除された状態で、電気回路ユニット５が収容部４の上側の開口から抜脱される。   When the electric circuit unit 5 accommodated in the accommodating portion 4 is removed from the electrical junction box 2, for example, the electric circuit unit 5 is cured between the outer surface of the electric circuit unit 5 and the inner surface of the accommodating portion 4 from the upper opening of the accommodating portion 4. The engagement state of the elastic locking piece 22 of the electric circuit unit 5 engaged with the engaging convex portion 21 of the accommodating portion 4 from the lower side is released, and the inner surface of the accommodating portion 4 is The electric circuit unit 5 is accommodated in the state in which the engagement step 24 of the electric circuit unit 5 engaged from the lower side with the engaging portion 23c of the provided elastic engaging piece 23 is released. 4 is removed from the upper opening.

そして、収容部４の上側の開口から抜脱されて電気接続箱２から取り外された電気回路ユニット５を、再度電気接続箱２に組み付けるに際しては、電気回路ユニット５は、収容部４の上側の開口から収容部４に挿入される。   When the electric circuit unit 5 that has been removed from the upper opening of the housing part 4 and removed from the electric connection box 2 is assembled to the electric connection box 2 again, the electric circuit unit 5 is placed on the upper side of the housing part 4. It is inserted into the accommodating portion 4 from the opening.

具体的には図６および図７に示されるように、電気回路ユニット５が収容部４の上側の開口から収容部４内に挿入されるに伴って、電気回路ユニット５の外側面に設けられた弾性係止片２２の係止部２２ｃが、その下端面において、収容部４の内側面に設けられた対応する係合凸部２１の上端面に当接し、また、電気回路ユニット５の下端縁が、収容部４の内側面に設けられた弾性係止片２３の係止部２３ｃの上端面に当接する。このとき、電気回路ユニット５の外側面に設けられた弾性係止片２２の係止部２２ｃの下端面、および収容部４の内側面に設けられた弾性係止片２３の係止部２３ｃの上端面は、上述のとおりそれぞれ傾斜して形成されているので、弾性係止片２２は接続している電気回路ユニット５の外側面に先端部２２ｂの突端が接近するように弾性変形し、弾性係止片２３は接続している収容部４の内側面に先端部２３ｂの突端が接近するように弾性変形し、これにより、電気回路ユニット５の進入が許容される。   Specifically, as shown in FIGS. 6 and 7, the electric circuit unit 5 is provided on the outer surface of the electric circuit unit 5 as the electric circuit unit 5 is inserted into the housing portion 4 from the upper opening of the housing portion 4. The locking portion 22c of the elastic locking piece 22 is in contact with the upper end surface of the corresponding engagement convex portion 21 provided on the inner surface of the accommodating portion 4 at the lower end surface thereof, and the lower end of the electric circuit unit 5 The edge abuts on the upper end surface of the locking portion 23 c of the elastic locking piece 23 provided on the inner surface of the housing portion 4. At this time, the lower end surface of the locking portion 22c of the elastic locking piece 22 provided on the outer surface of the electric circuit unit 5 and the locking portion 23c of the elastic locking piece 23 provided on the inner side surface of the housing portion 4 are used. Since the upper end surface is formed to be inclined as described above, the elastic locking piece 22 is elastically deformed so that the protruding end of the tip end portion 22b approaches the outer surface of the connected electric circuit unit 5, and is elastic. The locking piece 23 is elastically deformed so that the protruding end of the distal end portion 23b approaches the inner side surface of the accommodating portion 4 to which the locking piece 23 is connected, so that the electric circuit unit 5 is allowed to enter.

そして、電気回路ユニット５が収容部４内に完全に挿入されると、電気回路ユニット５の外側面に設けられた弾性係止片２２の先端係止部２２ｃが収容部４の内側面に設けられた係合凸部２１に下側から係合し、同時に、電気回路ユニット５の外側面に設けられた係合段部２４が収容部４の内側面に設けられた弾性係止片２３の係止部２３ｃに下側から係合し、これにより、電気回路ユニット５は収容部４の上側の開口からの脱抜も阻止される。また、このとき、電気回路ユニット５の外側面に設けられた係合凸部１８，２０が、収容部４の内側面に設けられた弾性係止片１７，１９の係止部１７ｃ，１９ｃに上側から係合し、これにより、電気回路ユニット５は収容部４の下側の開口からの脱抜を阻止される。   When the electric circuit unit 5 is completely inserted into the housing portion 4, the distal end locking portion 22 c of the elastic locking piece 22 provided on the outer surface of the electric circuit unit 5 is provided on the inner side surface of the housing portion 4. At the same time, the engaging step portion 24 provided on the outer side surface of the electric circuit unit 5 is engaged with the engaging convex portion 21 provided on the inner side surface of the housing portion 4. The engaging portion 23c is engaged from the lower side, whereby the electric circuit unit 5 is also prevented from being removed from the upper opening of the accommodating portion 4. At this time, the engaging projections 18 and 20 provided on the outer side surface of the electric circuit unit 5 are connected to the locking portions 17c and 19c of the elastic locking pieces 17 and 19 provided on the inner side surface of the housing portion 4, respectively. The electric circuit unit 5 is prevented from being pulled out from the lower opening of the housing portion 4 by engaging from above.

上述のように本実施形態の電気回路ユニット５と電気接続箱２との着脱方法および着脱構造１によれば、電気回路ユニット５を電気接続箱２に組み付ける際に、ワイヤハーネス６が導出される下側の開口から収容部４に挿着されるので、予めワイヤハーネス６を電気回路ユニット５に接続した上で当該電気回路ユニット５を電気接続箱２に組み付けることができ、従来のように複数のワイヤハーネスが纏まりなく存在してしまうことがなく、また、ワイヤハーネスを一旦引き出す必要もないので、電気回路ユニット５を電気接続箱２に組み付ける作業が容易となる。   As described above, according to the method for attaching / detaching the electric circuit unit 5 and the electric junction box 2 and the attachment / detachment structure 1 of the present embodiment, the wire harness 6 is derived when the electric circuit unit 5 is assembled to the electric junction box 2. Since the wire harness 6 is connected to the electric circuit unit 5 in advance, the electric circuit unit 5 can be assembled to the electric junction box 2 in advance, and the plurality of pieces as in the prior art. The wire harness does not exist all together, and it is not necessary to pull out the wire harness once. Therefore, the work of assembling the electric circuit unit 5 to the electric junction box 2 becomes easy.

そして、収容部４に収容された電気回路ユニット５を上側（即ち、挿着側とは反対側）の開口から抜挿することができるので、例えばメンテナンスなどで電気回路ユニット５を電気接続箱２から取り外し、再度、電気接続箱２に組み付ける際には、電気接続箱２のワイヤハーネス６が密集している下側での作業を回避することができ、その作業が容易となる。   And since the electric circuit unit 5 accommodated in the accommodating part 4 can be inserted / removed from the opening of the upper side (namely, the side opposite to the insertion side), the electric circuit unit 5 is connected to the electric junction box 2 for maintenance, for example. When it is detached from the electrical connection box 2 and assembled again, the work on the lower side where the wire harnesses 6 of the electrical connection box 2 are dense can be avoided, and the work becomes easy.

尚、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、前述した実施形態における各構成要素の材質、形状、寸法、数値、形態、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

例えば、収容部４に挿着された電気回路ユニット５を挿着側とは反対側の開口から抜挿可能に係止する係止手段を構成している弾性係止片１７，１９，２２，２３、および対応する係合凸部１８，２０，２１、並びに係合段部２４の配置箇所、数は任意であり、上述した実施形態に限定されるものではない。   For example, the elastic locking pieces 17, 19, 22, which constitute locking means for locking the electric circuit unit 5 inserted into the housing portion 4 so as to be detachable from the opening opposite to the insertion side. 23 and the corresponding engaging convex portions 18, 20, 21 and the engaging step portion 24 are arranged in any number and number, and are not limited to the above-described embodiment.

本発明の電気回路ユニットと電気接続箱との着脱方法が適用される電気回路ユニットと電気接続箱との着脱構造の一実施形態を示す分解斜視図である。It is a disassembled perspective view which shows one Embodiment of the attachment / detachment structure of the electric circuit unit and electric junction box to which the attachment / detachment method of the electric circuit unit of this invention and an electric junction box is applied. 図１に示す電気回路ユニットが電気接続箱に装着された状態での平面図である。It is a top view in the state where the electric circuit unit shown in Drawing 1 was attached to the electric junction box. 図２におけるIII-III矢視断面図である。FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. 図２におけるIV-IV矢視断面図であって電気回路ユニットを電気接続箱の収容部に挿着する過程を示す断面図である。FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 2 and is a cross-sectional view showing a process of inserting the electric circuit unit into the housing portion of the electric junction box. 図２におけるV-V矢視断面図であって電気回路ユニットを電気接続箱の収容部に挿着する過程を示す断面図である。FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 2, and is a cross-sectional view illustrating a process of inserting the electric circuit unit into the housing portion of the electric connection box. 図２にVI-VI矢視断面図であって電気回路ユニットを電気接続箱の収容部から抜脱する過程を示す断面図である。FIG. 2 is a cross-sectional view taken along the line VI-VI in FIG. 2 and is a cross-sectional view showing a process of removing the electric circuit unit from the housing portion of the electric junction box. 図３における点線円VIIで囲まれた領域の要部断面図であって電気回路ユニットを電気接続箱の収容部から抜脱する過程を示す断面図である。FIG. 4 is a cross-sectional view of a main part of a region surrounded by a dotted line circle VII in FIG. 3, showing a process of removing the electric circuit unit from the housing part of the electric connection box. 図４における点線円VIIIで囲まれた領域の要部拡大断面図である。It is a principal part expanded sectional view of the area | region enclosed with the dotted line circle VIII in FIG. 図６における点線円IXで囲まれた領域の要部拡大断面図である。It is a principal part expanded sectional view of the area | region enclosed by the dotted line circle IX in FIG. 図７における点線円Xで囲まれた領域の要部拡大断面図である。FIG. 8 is an enlarged cross-sectional view of a main part of a region surrounded by a dotted circle X in FIG. 7. 従来の電気接続箱の分解斜視図である。It is a disassembled perspective view of the conventional electrical junction box. 従来の他の電気接続箱の分解斜視図である。It is a disassembled perspective view of the other conventional electrical junction box.

符号の説明Explanation of symbols

１ 着脱構造
２ 電気接続箱
３ ハウジング
４ 収容部
５ 電気回路ユニット
６ ワイヤハーネス
８ ケース
１１ 取付孔
１７，１９，２２，２３ 弾性係止片（係止手段）
１８，２０，２１ 係合凸部（係止手段）
２４ 係合段部（係止手段） DESCRIPTION OF SYMBOLS 1 Detachable structure 2 Electrical junction box 3 Housing 4 Accommodating part 5 Electric circuit unit 6 Wire harness 8 Case 11 Mounting hole 17, 19, 22, 23 Elastic locking piece (locking means)
18, 20, 21 engaging projection (locking means)
24 engaging step (locking means)

Claims (2)

各種電気部品が取り付けられると共に当該電気部品に電気的に接続されるワイヤハーネスが接続されている、略直方体状の電気回路ユニットと、当該電気回路ユニットがカセット式に組み付けられる電気接続箱との着脱方法であって、
前記電気接続箱に当該電気接続箱への前記電気回路ユニットの組み付け方向の前後に開口する収容部を設け、前記収容部の内側面と前記電気回路ユニットの外側面に前記収容部内に前記電気回路ユニットを係止するための係止手段を設け、
前記電気回路ユニットを前記電気接続箱に組み付ける際に、前記電気回路ユニットを前記ワイヤハーネスが導出される側の開口から前記収容部内に挿着し、前記収容部の係合凸部に前記電気回路ユニットの弾性係止片が下側から係合すると共に、前記収容部の内側面に設けられた弾性係止片の係止部に前記電気回路ユニットの係合段部が下側から係合する前記係止手段により、前記電気回路ユニットを前記収容部内に係止し、
また、前記挿着側とは反対側の開口からの治具の挿入により、前記収容部の係合凸部に下側から係合している前記電気回路ユニットの弾性係止片の係合状態が解除されると共に、前記収容部の内側面に設けられた弾性係止片の係止部に下側から係合している前記電気回路ユニットの係合段部の係合状態が解除され、前記収容部内に挿着された前記電気回路ユニットを前記挿着側とは反対側の開口から抜き出し、さらに、抜き出された前記電気回路ユニットを前記挿着側とは反対側の開口から前記収容部内に挿着し前記係止手段により係止することを特徴とする電気回路ユニットと電気接続箱との着脱方法。 Attachment and detachment of a substantially rectangular parallelepiped electric circuit unit to which various electric parts are attached and a wire harness electrically connected to the electric part, and an electric junction box in which the electric circuit unit is assembled in a cassette type A method,
The electrical connection box is provided with a housing part that opens before and after the assembly direction of the electric circuit unit to the electrical connection box, and the electric circuit is provided in the housing part on the inner surface of the housing part and the outer surface of the electric circuit unit. Provide locking means for locking the unit,
When assembling the electric circuit unit to the electric junction box, the electric circuit unit is inserted into the housing portion from an opening on the side from which the wire harness is led out , and the electric circuit is fitted to the engaging convex portion of the housing portion. The elastic locking piece of the unit is engaged from the lower side, and the engaging step portion of the electric circuit unit is engaged from the lower side to the locking portion of the elastic locking piece provided on the inner surface of the housing portion. The electric circuit unit is locked in the housing portion by the locking means,
Further, the engagement state of the elastic locking piece of the electric circuit unit engaged from below with the engagement convex portion of the housing portion by inserting a jig from the opening opposite to the insertion side. Is released, and the engagement state of the engagement step portion of the electric circuit unit engaged from the lower side to the locking portion of the elastic locking piece provided on the inner surface of the housing portion is released, The electric circuit unit inserted into the housing portion is extracted from the opening on the side opposite to the insertion side, and the extracted electric circuit unit is further received from the opening on the side opposite to the insertion side. A method for attaching and detaching an electric circuit unit and an electric junction box, wherein the electric circuit unit and the electric junction box are inserted into the portion and locked by the locking means. 各種電気部品が取り付けられると共に当該電気部品に電気的に接続されるワイヤハーネスが接続されている、略直方体状の電気回路ユニットと、当該電気回路ユニットがカセット式に組み付けられる電気接続箱との着脱構造であって、
前記電気接続箱には当該電気接続箱への前記電気回路ユニットの組み付け方向の前後に開口する収容部が設けられ、また、前記収容部の内側面と前記電気回路ユニットの外側面に前記収容部内に前記電気回路ユニットを係止するための係止手段が設けられ、
前記電気回路ユニットが前記電気接続箱に組み付けられる際に、前記電気回路ユニットが前記ワイヤハーネスが導出される側の開口から前記収容部に挿着され、前記収容部の係合凸部に前記電気回路ユニットの弾性係止片が下側から係合すると共に、前記収容部の内側面に設けられた弾性係止片の係止部に前記電気回路ユニットの係合段部が下側から係合する前記係止手段により、前記電気回路ユニットが前記収容部内に係止され、
また、前記挿着側とは反対側の開口からの治具の挿入により、前記収容部の係合凸部に下側から係合している前記電気回路ユニットの弾性係止片の係合状態が解除されると共に、前記収容部の内側面に設けられた弾性係止片の係止部に下側から係合している前記電気回路ユニットの係合段部の係合状態が解除され、前記収容部内に挿着された前記電気回路ユニットが前記挿着側とは反対側の開口から抜き出され、さらに、抜き出された前記電気回路ユニットが前記挿着側とは反対側の開口から前記収容部内に挿着されて前記係止手段により係止されることを特徴とする電気回路ユニットと電気接続箱との着脱構造。 Attachment and detachment of a substantially rectangular parallelepiped electric circuit unit to which various electric parts are attached and a wire harness electrically connected to the electric part, and an electric junction box in which the electric circuit unit is assembled in a cassette type Structure,
The electrical connection box is provided with a housing part that opens before and after the assembly direction of the electric circuit unit to the electrical connection box, and the inside of the housing part is provided on the inner surface of the housing part and the outer surface of the electric circuit unit. A locking means for locking the electric circuit unit is provided,
When the electrical circuit unit is assembled to the electrical junction box, the electrical circuit unit is inserted into the housing part from an opening on the side from which the wire harness is led out , and the electrical projection unit is engaged with the electrical projection on the engaging convex part. The elastic locking piece of the circuit unit is engaged from below, and the engaging step of the electric circuit unit is engaged from below with the locking portion of the elastic locking piece provided on the inner surface of the housing portion. The electric circuit unit is locked in the housing portion by the locking means.
Further, the engagement state of the elastic locking piece of the electric circuit unit engaged from below with the engagement convex portion of the housing portion by inserting a jig from the opening opposite to the insertion side. Is released, and the engagement state of the engagement step portion of the electric circuit unit engaged from the lower side to the locking portion of the elastic locking piece provided on the inner surface of the housing portion is released, The electric circuit unit inserted into the housing portion is extracted from the opening on the opposite side to the insertion side, and the extracted electric circuit unit is further removed from the opening on the opposite side to the insertion side. An attachment / detachment structure between an electric circuit unit and an electric junction box, wherein the electric circuit unit and the electric connection box are inserted into the housing and locked by the locking means.
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JP5105516B2 (en) * 2007-10-16 2012-12-26 矢崎総業株式会社 Molding method for electrical junction box and storage box
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JP6297904B2 (en) * 2014-04-21 2018-03-20 矢崎総業株式会社 Locking structure between supported member and support
JP6213837B2 (en) 2014-06-11 2017-10-18 トヨタ車体株式会社 Accommodating section and electrical junction box provided with the same
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