JP4275641B2 - Car body mounting structure of electric junction box for automobile - Google Patents

Car body mounting structure of electric junction box for automobile Download PDF

Info

Publication number
JP4275641B2
JP4275641B2 JP2005112614A JP2005112614A JP4275641B2 JP 4275641 B2 JP4275641 B2 JP 4275641B2 JP 2005112614 A JP2005112614 A JP 2005112614A JP 2005112614 A JP2005112614 A JP 2005112614A JP 4275641 B2 JP4275641 B2 JP 4275641B2
Authority
JP
Japan
Prior art keywords
vehicle body
bolt
heat sink
junction box
bolt hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2005112614A
Other languages
Japanese (ja)
Other versions
JP2006296072A (en
Inventor
友紀貴 齋藤
義博 一色
敏也 城田
潤 山口
慎也 甲斐
佳彦 中浜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
Toyota Motor Corp
Original Assignee
Sumitomo Wiring Systems Ltd
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, Toyota Motor Corp filed Critical Sumitomo Wiring Systems Ltd
Priority to JP2005112614A priority Critical patent/JP4275641B2/en
Publication of JP2006296072A publication Critical patent/JP2006296072A/en
Application granted granted Critical
Publication of JP4275641B2 publication Critical patent/JP4275641B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Installation Of Indoor Wiring (AREA)
  • Connection Or Junction Boxes (AREA)

Description

本発明は、パワーディストリビュータ（ＰＤ）を収容した自動車用電気接続箱の車体取付構造に関し、詳しくは、エンジンルーム内に配置され、ボンネットの内面近くに配置されている電気接続箱が衝突時に容易に落下できるようにして、ボンネットに歩行者等がぶつかった場合に電気接続箱により与える衝撃を緩和するものである。   The present invention relates to a vehicle body mounting structure for an electric junction box for automobiles that contains a power distributor (PD). More specifically, the electric junction box that is arranged in the engine room and is located near the inner surface of the bonnet can be easily used in the event of a collision. It can be dropped, and the impact given by the electric junction box when a pedestrian or the like hits the bonnet is mitigated.

近年、自動車用電気接続箱には、プリント基板上に基板リレー等の電子部品を実装すると共に裏面側にバスバーを固定しているパワーディストリビュータ（ＰＤ）を搭載している場合があり、ＰＤは発熱量が大きく、電気接続箱内が高温化されるため放熱対策が必要となっている。   In recent years, electrical junction boxes for automobiles are sometimes equipped with a power distributor (PD) that mounts electronic components such as board relays on a printed circuit board and fixes a bus bar on the back side. Since the amount is large and the temperature inside the electrical junction box is raised, it is necessary to take measures against heat dissipation.

例えば、特開２００２−３１５１４８号（特許文献１）では、図６に示すように、ケース１の内部に、配電回路を構成する導体板２が略同一面上に配置され、該導体板２上に半導体スイッチング素子３が実装されると共に、ケース１の外面に複数のフィン４ａを並設した放熱部材（ヒートシンク）４を固定し、該放熱部材４と前記導体板２を熱的に接続させて、ケース１外へ放熱できる構成としている。   For example, in Japanese Patent Application Laid-Open No. 2002-315148 (Patent Document 1), as shown in FIG. 6, a conductor plate 2 constituting a power distribution circuit is disposed on substantially the same surface inside the case 1. The semiconductor switching element 3 is mounted on the outer surface of the case 1 and a heat dissipating member (heat sink) 4 having a plurality of fins 4 a arranged in parallel is fixed to the heat dissipating member 4 and the conductor plate 2. The heat radiation to the outside of the case 1 is possible.

前記構成のパワーディストリビュータは、ケース１内の熱を外部へ放出することはできるが、ケース１に収容したパワーディストリビュータが、さらに、電気接続箱のケースあるいはカバー内に収容されると、前記放熱部材から放出される熱により、電気接続箱内が高温化し、他の電子部品等に支障をきたす恐れがある。そこで、前記放熱部材をケースやカバーから外方へ突出させて、金属パネルからなる車体にボルト締め接続し、車体を放熱材として利用することにより、電気接続箱内の昇温抑制を図る場合がある。   The power distributor having the above structure can release the heat in the case 1 to the outside. However, when the power distributor accommodated in the case 1 is further accommodated in the case or cover of the electrical junction box, the heat radiating member Due to the heat released from the inside, there is a risk that the inside of the electrical junction box will become hot and interfere with other electronic components. Therefore, there is a case where temperature rise in the electric junction box is suppressed by projecting the heat radiating member outward from the case or cover, bolting and connecting to a vehicle body made of a metal panel, and using the vehicle body as a heat radiating material. is there.

このような放熱部材を車体にボルト締め固定した電気接続箱が自動車のボンネットの内面近傍位置に配置した場合、電気接続箱が車体に強固に固定されているため、ボンネットに歩行者等が衝突しても電気接続箱の固定が解除されず、電気接続箱は移動しない。ボンネットに歩行者等が衝突したときに、ボンネットが大きく凹めば歩行者等に対する衝撃力を緩和することができるが、このように電気接続箱が車体に強固に固定されていると、ボンネットは電気接続箱に当接する僅かな寸法は凹むが、それ以上は電気接続箱によって凹みが規制され、歩行者が受ける衝撃力を緩和することができない。   When an electrical junction box with such a heat radiating member bolted to the vehicle body is placed near the inner surface of the bonnet of the automobile, the electrical junction box is firmly fixed to the vehicle body. However, the electric junction box is not released and the electric junction box does not move. When a pedestrian or the like collides with the bonnet, the impact force on the pedestrian or the like can be mitigated if the bonnet is greatly recessed, but if the electrical junction box is firmly fixed to the vehicle body in this way, Although the slight dimension that abuts the electrical junction box is recessed, the recess is restricted by the electrical junction box beyond that, and the impact force received by the pedestrian cannot be reduced.

特開２００２−３１５１４８号公報JP 2002-315148 A

本発明は前記問題に鑑みてなされたものであり、ボンネットの内面近傍でヒートシンクを車体にボルト締めした電気接続箱であっても、歩行者等がボンネットに衝突した時に、電気接続箱の固定が容易に解除されて、ボンネットの凹みを大きくでき、歩行者等に対する衝撃力の緩和を図ることを課題としている。   The present invention has been made in view of the above problems, and even when an electric junction box is bolted to the vehicle body near the inner surface of the bonnet, when the pedestrian or the like collides with the bonnet, the electric junction box is fixed. It is easy to release, and the bonnet dent can be enlarged, and the object is to reduce the impact force on pedestrians and the like.

前記課題を解決するため、本発明は、プリント基板のプリント導体面側に電子部品が実装されていると共に他面側にバスバーが固定され、該バスバー固定面に絶縁層を介して金属製放熱板からなるヒートシンクが一体的に組付けられているパワーディストリビュータ（ＰＤ）がケース内部に収容され、
前記ヒートシンクは前記ケースに設けられた開口に位置されて露出されると共に、
前記ケースに取り付けるロアカバーとアッパーカバーとの間から外方に水平方向へ延在され、該延在したヒートシンクを下方へ屈曲させて垂直部を形成し、該垂直部の下端に水平方向に屈曲すると共にボルト孔が穿設された車体固定部が設けられ、
前記ボルト孔はボルト頭部径より小さいと共にボルト軸部径より大とされ、該ボルト孔の前端に連続して前記ボルト頭部径よりも大とした広巾孔が前記車体固定部から前記垂直部にかけて設けられ、該広巾孔の垂直部側の上端が前記ボルト孔に差し込んだボルトの頭部より高い位置となるように設定され、前記ボルト孔を通して車体にボルト締め固定がなされ、自動車に対して、前方から後方に向けて衝撃荷重が負荷された際に、前記ボルト孔を通して車体に締結されるボルトの位置に前記広巾孔が移動されて前記ヒートシンクがボルトより外れる構成とされている自動車用電気接続箱の車体取付構造を提供している。 In order to solve the above-mentioned problems, the present invention provides an electronic component mounted on a printed conductor surface side of a printed circuit board and a bus bar fixed to the other surface side, and a metal heat radiating plate via an insulating layer on the bus bar fixed surface. A power distributor (PD) in which a heat sink consisting of
The heat sink is positioned and exposed in an opening provided in the case, and
It extends horizontally from between the lower cover and the upper cover attached to the case outward , bends the extended heat sink downward to form a vertical portion, and bends horizontally at the lower end of the vertical portion. A vehicle body fixing part with a bolt hole is provided,
The bolt hole is smaller than the bolt head diameter and larger than the bolt shaft diameter , and a wide hole which is continuous with the front end of the bolt hole and larger than the bolt head diameter extends from the vehicle body fixing portion to the vertical direction. The upper end of the wide hole is set to be higher than the head of the bolt inserted into the bolt hole, and bolted and fixed to the vehicle body through the bolt hole. When the impact load is applied from the front to the rear, the wide hole is moved to the position of the bolt fastened to the vehicle body through the bolt hole, and the heat sink is configured to be detached from the bolt. An electric junction box mounting structure is provided.

前記構成の電気接続箱であると、通常時においては、金属製放熱板からなるヒートシンクの車体固定部を車体にボルト締めしているため、電気接続箱が所要の取付強度で車体側に固定されると共に、車体を放熱材として電気接続箱内の昇温抑制を図ることができる。
一方、例えば、歩行者等がボンネットに衝突して電気接続箱に前方から後方に向けて衝撃荷重が負荷された時、ボルト孔を通して車体に締結されるボルトの位置に広巾孔が移動されて、該広巾孔を通してボルト頭部が抜け、電気接続箱の車体への固定が解除される。これにより、電気接続箱が後方へ移動、あるいは、下方へ落下するため、ボンネットの凹みを大きくでき、衝突した歩行者等への衝撃力を緩和して、歩行者等の保護を図ることができる。 In the case of the electrical junction box having the above-described configuration, the body fixing portion of the heat sink made of a metal heat sink is bolted to the vehicle body at normal times, so that the electrical junction box is fixed to the vehicle body side with a required mounting strength. In addition, the temperature rise in the electrical junction box can be suppressed using the vehicle body as a heat radiating material.
On the other hand, for example, when a pedestrian or the like collides with the bonnet and an impact load is applied to the electrical connection box from the front to the rear, the wide hole is moved to the position of the bolt fastened to the vehicle body through the bolt hole, The bolt head is removed through the wide hole, and the fixing of the electric junction box to the vehicle body is released. As a result, since the electrical junction box moves backward or falls downward, the bonnet dent can be enlarged, the impact force on the colliding pedestrians, etc. can be reduced, and the pedestrians can be protected. .

前記ロアカバーには車体にボルト締め固定されるブラケット部が設けられ、該ブラケット部には、前記衝撃荷重が負荷された時にボルト孔の周縁から破断する溝が設けられている。   The lower cover is provided with a bracket portion that is bolted to the vehicle body, and the bracket portion is provided with a groove that breaks from the periphery of the bolt hole when the impact load is applied.

前記構成によれば、通常時には、ヒートシンクの車体固定部だけでなく、ロアカバーに設けたブラケット部によって電気接続箱が車体に安定した状態で取り付けられる一方、電気接続箱に衝撃荷重が負荷されると、ボルト孔の周縁から溝が破断して、この破断した溝を通してボルトが抜け、ブラケット部による固定も解除される。よって、電気接続箱に衝撃荷重が負荷されると、ヒートシンクの車体固定部及びロアカバーのブラケット部による車体への固定が全て解除され、電気接続箱が移動し、ボンネットを十分に凹ませて、衝突した歩行者等への衝撃力を緩和して、歩行者等の保護を図ることができる。   According to the above configuration, when the electric connection box is stably attached to the vehicle body in a normal state by the bracket portion provided on the lower cover as well as the vehicle body fixing portion of the heat sink, an impact load is applied to the electric connection box. The groove breaks from the periphery of the bolt hole, the bolt comes out through the broken groove, and the fixing by the bracket portion is also released. Therefore, when an impact load is applied to the electrical junction box, the fixing of the heat sink to the vehicle body by the vehicle body fixing part and the lower cover bracket part is all released, the electric junction box moves, the bonnet is fully recessed, and the collision occurs. The impact force on the pedestrian and the like can be eased to protect the pedestrian and the like.

前述したように、本発明によれば、通常時においては、金属製放熱板からなるヒートシンクの車体固定部を車体にボルト締めしているため、電気接続箱が所要の取付強度で車体側に固定されると共に、車体を放熱材として電気接続箱内の昇温抑制を図ることができる。
一方、例えば、歩行者等がボンネットに衝突して電気接続箱に前方から後方に向けて衝撃荷重が負荷された時、ボルト孔を通して車体に締結されるボルトの位置に広巾孔が移動されて、該広巾孔を通してボルト頭部が抜け、電気接続箱の車体への固定が解除される。これにより、電気接続箱が後方へ移動、あるいは、下方へ落下するため、ボンネットの凹みを大きくでき、衝突した歩行者等への衝撃力を緩和して、歩行者等の保護を図ることができる。 As described above, according to the present invention, since the vehicle body fixing portion of the heat sink made of a metal heat sink is bolted to the vehicle body in normal times, the electric junction box is fixed to the vehicle body side with a required mounting strength. In addition, the temperature rise in the electrical junction box can be suppressed using the vehicle body as a heat dissipation material.
On the other hand, for example, when a pedestrian or the like collides with the bonnet and an impact load is applied to the electrical connection box from the front to the rear, the wide hole is moved to the position of the bolt fastened to the vehicle body through the bolt hole, The bolt head is removed through the wide hole, and the fixing of the electric junction box to the vehicle body is released. As a result, since the electrical junction box moves backward or falls downward, the bonnet dent can be enlarged, the impact force on the colliding pedestrians, etc. can be reduced, and the pedestrians can be protected. .

本発明の実施形態を図面を参照して説明する。
図１乃至図５は、本発明の実施形態を示し、自動車用電気接続箱１０は、エンジンルームのボンネット内面近傍に配置されるものであり、ケース１１内部にパワーディストリビュータ２０（以下、「ＰＤ２０」と略称する）とジャンクションボックス（図示せず）とを並列に収容し、該ケース１１の上面側をアッパーカバー１２で、該ケース１１の下面側をロアカバー１３で覆っている。
また、前記ＰＤ２０に一体的に組み付けられているヒートシンク２６を、アッパーカバー１２の周壁１２ａとロアカバー１３の周壁１３ａの間に設けられたヒートシンク突出口１８から外方へ突出させている。 Embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of the present invention, in which an automobile electrical junction box 10 is disposed in the vicinity of an inner surface of a hood of an engine room, and a power distributor 20 (hereinafter referred to as “PD20”) is provided inside the case 11. And a junction box (not shown) are accommodated in parallel, and the upper surface side of the case 11 is covered with the upper cover 12 and the lower surface side of the case 11 is covered with the lower cover 13.
The heat sink 26 assembled integrally with the PD 20 is protruded outward from a heat sink protrusion 18 provided between the peripheral wall 12 a of the upper cover 12 and the peripheral wall 13 a of the lower cover 13.

ＰＤ２０は、図１（Ｂ）に示すように、プリント基板２１の上面側にプリント導体２２を設け、該プリント導体２２には基板リレー２３などの電子部品を実装している。プリント基板２１の下面側には、複数のバスバー２４を固定し、該バスバー２４の下面側には絶縁層２５を介して金属製放熱板（本実施形態ではアルミニウム）からなるヒートシンク２６を一体的に組み付けている。このプリント導体２２およびバスバー２４と前記ジャンクションボックスの内部回路とは電気的に接続している。   As shown in FIG. 1B, the PD 20 is provided with a printed conductor 22 on the upper surface side of the printed board 21, and electronic components such as a board relay 23 are mounted on the printed conductor 22. A plurality of bus bars 24 are fixed to the lower surface side of the printed circuit board 21, and a heat sink 26 made of a metal heat sink (aluminum in the present embodiment) is integrally formed on the lower surface side of the bus bar 24 with an insulating layer 25 interposed therebetween. It is assembled. The printed conductor 22 and the bus bar 24 are electrically connected to the internal circuit of the junction box.

ＰＤ２０は、上面側をケース１１で覆って収容しているが、下面側をケース１１に設けた開口に対向させており、該開口からヒートシンク２６を露出させ、かつ、該ヒートシンク２６の車体取付状態の後端側をケース１１の外方へ延在させている。このヒートシンク２６は、ケース１１の周壁１１ａの下端からヒートシンク突出口１８に向かって水平に突出し、該突出部分をシール用ゴム材３２を取り付けるシール部２７としている。該シール部２７の後端側を下方へ屈曲させてロアカバー１３の底面よりも下方位置まで延在する垂直部２８を形成し、該垂直部２８の下端を車体Ｂの表面に沿うように水平方向に後方へ屈曲させて車体固定部２９を形成している。該車体固定部２９にはボルト孔３０を穿設し、該ボルト孔３０にボルト４１を差し込んで、ヒートシンク２６を車体Ｂに接触させて締め付け固定することにより、発熱量の大きいＰＤ２０の熱を車体Ｂに伝導して放熱する構成としている。   The PD 20 is accommodated by covering the upper surface side with the case 11, but the lower surface side is opposed to the opening provided in the case 11, the heat sink 26 is exposed from the opening, and the heat sink 26 is attached to the vehicle body. The rear end side extends outward from the case 11. The heat sink 26 protrudes horizontally from the lower end of the peripheral wall 11 a of the case 11 toward the heat sink protrusion 18, and the protruding portion serves as a seal portion 27 to which a sealing rubber material 32 is attached. The rear end side of the seal portion 27 is bent downward to form a vertical portion 28 extending to a position below the bottom surface of the lower cover 13, and the lower end of the vertical portion 28 extends horizontally along the surface of the vehicle body B. The vehicle body fixing portion 29 is formed by bending backward. Bolt holes 30 are formed in the vehicle body fixing portion 29, bolts 41 are inserted into the bolt holes 30, and the heat sink 26 is brought into contact with the vehicle body B to be fastened and fixed. It is configured to dissipate heat by conducting to B.

ヒートシンク２６の車体固定部２９に穿設したボルト孔３０は、電気接続箱１０を車体に取り付けた状態で前後方向に延在する細幅のスリット状とし、この車体取付状態でボルト孔３０の前端に連続させて広巾孔３１を設けている。該広巾孔３１は、ヒートシンク２６の車体固定部２９から垂直部２８にかけて設けており、図１（Ｂ）に示すように、広巾孔３１の垂直部２８側の上端３１ａが、ボルト孔３０に差し込んだボルト４１のボルト頭部４１ａの上端面よりも高い位置となるよう設定している。
また、図１（Ａ）に示すように、ボルト孔３０の幅は、ボルト頭部４１ａの径Ｌ１より小さく、ボルト軸部４１ｂの径よりも大きく設定されており、広巾孔３１の幅Ｌ３は、ボルト頭部４１ａの径Ｌ１及びボルト頭部４１ａと車体Ｂとの間に介在されるワッシャ４２の径Ｌ２よりも大きく設定されている。ヒートシンク２６の車体固定部２９はボルト孔３０の先端から車体固定部２９の後端の部分を他の部分よりも細幅としている。 The bolt hole 30 drilled in the vehicle body fixing portion 29 of the heat sink 26 has a narrow slit shape extending in the front-rear direction with the electrical connection box 10 attached to the vehicle body, and the front end of the bolt hole 30 in this vehicle body attached state. A wide hole 31 is provided continuously. The wide hole 31 is provided from the vehicle body fixing part 29 to the vertical part 28 of the heat sink 26, and the upper end 31 a on the vertical part 28 side of the wide hole 31 is inserted into the bolt hole 30 as shown in FIG. The bolt 41 is set to be higher than the upper end surface of the bolt head 41a.
As shown in FIG. 1A, the width of the bolt hole 30 is set to be smaller than the diameter L1 of the bolt head portion 41a and larger than the diameter of the bolt shaft portion 41b, and the width L3 of the wide hole 31 is The diameter L1 of the bolt head 41a and the diameter L2 of the washer 42 interposed between the bolt head 41a and the vehicle body B are set. In the vehicle body fixing portion 29 of the heat sink 26, the rear end portion of the vehicle body fixing portion 29 from the front end of the bolt hole 30 is narrower than the other portions.

また、図３に示すように、電気接続箱１０のロアカバー１３には車体取付状態の前端と後端に車体固定用のブラケット部１４、１５を設けている。該ブラケット部１４、１５の車体に沿わせる車体固定部１４ａ、１５ａにボルト孔１４ｂ、１５ｂを穿設し、該ボルト孔１４ｂ、１５ｂにボルトを差し込んで、車体に締め付け固定している。
また、ブラケット部１４、１５の車体固定部１４ａ、１５ａには、図４に示すように、車体取付状態でボルト孔１４ｂ、１５ｂの前端に連続し、車体固定部１４ａ、１５ａの前端縁まで延在する細幅の溝１４ｃ、１５ｃを設けている。また、ブラケット１５には、図４（Ｂ）に示すように、車体固定部１５ａの前端に連続する箇所にボルト抜け用の開口１５ｄを設けている。 Further, as shown in FIG. 3, the lower cover 13 of the electrical junction box 10 is provided with bracket portions 14 and 15 for fixing the vehicle body at the front end and the rear end of the vehicle body attached state. Bolt holes 14b and 15b are formed in the vehicle body fixing portions 14a and 15a along the vehicle bodies of the bracket portions 14 and 15, and bolts are inserted into the bolt holes 14b and 15b to be fastened and fixed to the vehicle body.
Further, as shown in FIG. 4, the vehicle body fixing portions 14a and 15a of the bracket portions 14 and 15 are connected to the front ends of the bolt holes 14b and 15b in the vehicle body attached state and extend to the front end edges of the vehicle body fixing portions 14a and 15a. Existing narrow grooves 14c and 15c are provided. Further, as shown in FIG. 4 (B), the bracket 15 is provided with an opening 15d for bolt removal at a location continuous with the front end of the vehicle body fixing portion 15a.

前記電気接続箱１０は、通常時においては、ヒートシンク２６の車体固定部２９とロアカバー１３のブラケット部１４、１５を車体Ｂにボルト締めしているため、電気接続箱１０が所要の取付強度で車体Ｂ側に固定されると共に、車体Ｂを放熱材として電気接続箱１０内の昇温抑制を図ることができる。
一方、例えば、歩行者等がボンネットに衝突して電気接続箱１０に図１及び図３の矢印で示すように前方から後方に向けて衝撃荷重が負荷された時、ブラケット部１４、１５を車体に固定していたボルトが車体固定部１４ａ、１５ａに設けた溝１４ｃ、１５ｃを破断して車体固定部１４ａ、１５ａから脱落し、ブラケット部１４、１５による電気接続箱の車体への固定が解除される。同時に、図５に示すように、ヒートシンク２６の車体固体部２９のボルト孔３０を通して車体Ｂに締結されていたボルト４１の位置に広巾孔３１が移動されて、該広巾孔３１を通してボルト頭部４１ａが抜け、ヒートシンク２６による電気接続箱１０の車体Ｂへの固定も解除される。これにより、電気接続箱１０の車体Ｂへの固定が全て解除されて、前方からの衝撃荷重により電気接続箱１０が後方へ移動、あるいは、下方へ落下するため、電気接続箱１０がボンネットの凹みを規制することなく、ボンネットの凹みを大きくでき、衝突した歩行者等への衝撃力を緩和して、歩行者等の保護を図ることができる。 Since the electric junction box 10 is normally bolted to the vehicle body B with the vehicle body fixing portion 29 of the heat sink 26 and the bracket portions 14 and 15 of the lower cover 13, the electric junction box 10 has the required mounting strength and the vehicle body. While being fixed to the B side, the temperature rise in the electrical junction box 10 can be suppressed using the vehicle body B as a heat dissipation material.
On the other hand, for example, when a pedestrian or the like collides with the bonnet and an impact load is applied to the electrical junction box 10 from the front to the rear as shown by the arrows in FIGS. The bolts fixed to the body break the grooves 14c and 15c provided in the vehicle body fixing portions 14a and 15a and fall off from the vehicle body fixing portions 14a and 15a, and the fixing of the electric junction box to the vehicle body by the bracket portions 14 and 15 is released. Is done. At the same time, as shown in FIG. 5, the wide hole 31 is moved to the position of the bolt 41 fastened to the vehicle body B through the bolt hole 30 of the vehicle body solid portion 29 of the heat sink 26, and the bolt head 41 a is passed through the wide hole 31. And the fixing of the electrical junction box 10 to the vehicle body B by the heat sink 26 is released. As a result, the electric connection box 10 is completely fixed to the vehicle body B, and the electric connection box 10 moves rearward or drops downward due to an impact load from the front, so that the electric connection box 10 is recessed in the bonnet. Without restricting the hood, it is possible to enlarge the dent of the bonnet, relieve the impact force on the colliding pedestrian and the like, and to protect the pedestrian and the like.

（Ａ）は本発明の第１実施形態のケースから突出するヒートシンクの平面図、（Ｂ）はパワーディストリビュータの断面図である。(A) is a top view of the heat sink which protrudes from the case of 1st Embodiment of this invention, (B) is sectional drawing of a power distributor. ヒートシンクの要部拡大斜視図である。It is a principal part expansion perspective view of a heat sink. 電気接続箱を示し、（Ａ）は平面図、（Ｂ）は正面図である。An electrical junction box is shown, (A) is a top view, (B) is a front view. （Ａ）（Ｂ）はブラケット部の要部拡大斜視図である。(A) and (B) are the principal part expansion perspective views of a bracket part. 電気接続箱に前方から衝撃を与えた状態を示す図面である。It is drawing which shows the state which gave the impact to the electrical junction box from the front. 従来例を示す図面である。It is drawing which shows a prior art example.

符号の説明Explanation of symbols

１０ 電気接続箱
１１ ケース
１２ アッパーカバー
１３ ロアカバー
１４、１５ ブラケット部
１４ｂ、１５ｂ ボルト孔
１４ｃ、１５ｃ 溝
２０ パワーディストリビュータ（ＰＤ）
２６ ヒートシンク
２９ 車体固定部
３０ ボルト孔
３１ 広巾孔
４１ ボルト
４１ａ ボルト頭部
４１ｂ ボルト軸部
Ｂ 車体 DESCRIPTION OF SYMBOLS 10 Electrical junction box 11 Case 12 Upper cover 13 Lower cover 14, 15 Bracket part 14b, 15b Bolt hole 14c, 15c Groove 20 Power distributor (PD)
26 Heat sink 29 Car body fixing part 30 Bolt hole 31 Wide hole 41 Bolt 41a Bolt head 41b Bolt shaft part B Car body

Claims (2)

プリント基板のプリント導体面側に電子部品が実装されていると共に他面側にバスバーが固定され、該バスバー固定面に絶縁層を介して金属製放熱板からなるヒートシンクが一体的に組付けられているパワーディストリビュータ（ＰＤ）がケース内部に収容され、
前記ヒートシンクは前記ケースに設けられた開口に位置されて露出されると共に、
前記ケースに取り付けるロアカバーとアッパーカバーとの間から外方に水平方向へ延在され、該延在したヒートシンクを下方へ屈曲させて垂直部を形成し、該垂直部の下端に水平方向に屈曲すると共にボルト孔が穿設された車体固定部が設けられ、
前記ボルト孔はボルト頭部径より小さいと共にボルト軸部径より大とされ、該ボルト孔の前端に連続して前記ボルト頭部径よりも大とした広巾孔が前記車体固定部から前記垂直部にかけて設けられ、該広巾孔の垂直部側の上端が前記ボルト孔に差し込んだボルトの頭部より高い位置となるように設定され、前記ボルト孔を通して車体にボルト締め固定がなされ、自動車に対して、前方から後方に向けて衝撃荷重が負荷された際に、前記ボルト孔を通して車体に締結されるボルトの位置に前記広巾孔が移動されて前記ヒートシンクがボルトより外れる構成とされている自動車用電気接続箱の車体取付構造。 An electronic component is mounted on the printed conductor surface side of the printed circuit board and a bus bar is fixed to the other surface side, and a heat sink made of a metal heat sink is integrally assembled to the bus bar fixed surface via an insulating layer. Power distributor (PD) is housed inside the case,
The heat sink is positioned and exposed in an opening provided in the case, and
It extends horizontally from between the lower cover and the upper cover attached to the case outward , bends the extended heat sink downward to form a vertical portion, and bends horizontally at the lower end of the vertical portion. A vehicle body fixing part with a bolt hole is provided,
The bolt hole is smaller than the bolt head diameter and larger than the bolt shaft diameter , and a wide hole which is continuous with the front end of the bolt hole and larger than the bolt head diameter extends from the vehicle body fixing portion to the vertical direction. The upper end of the wide hole is set to be higher than the head of the bolt inserted into the bolt hole, and bolted and fixed to the vehicle body through the bolt hole. When the impact load is applied from the front to the rear, the wide hole is moved to the position of the bolt fastened to the vehicle body through the bolt hole, and the heat sink is configured to be detached from the bolt. Electric junction box mounting structure. 前記ロアカバーには車体にボルト締め固定されるブラケット部が設けられ、該ブラケット部には、前記衝撃荷重が負荷された時にボルト孔の周縁から破断する溝が設けられている請求項１に記載の自動車用電気接続箱の車体取付構造。   The bracket according to claim 1, wherein the lower cover is provided with a bracket portion that is bolted and fixed to a vehicle body, and the bracket portion is provided with a groove that breaks from a periphery of the bolt hole when the impact load is applied. Car body mounting structure for electrical junction boxes for automobiles.
JP2005112614A 2005-04-08 2005-04-08 Car body mounting structure of electric junction box for automobile Expired - Fee Related JP4275641B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005112614A JP4275641B2 (en) 2005-04-08 2005-04-08 Car body mounting structure of electric junction box for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005112614A JP4275641B2 (en) 2005-04-08 2005-04-08 Car body mounting structure of electric junction box for automobile

Publications (2)

Publication Number Publication Date
JP2006296072A JP2006296072A (en) 2006-10-26
JP4275641B2 true JP4275641B2 (en) 2009-06-10

Family

ID=37416034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005112614A Expired - Fee Related JP4275641B2 (en) 2005-04-08 2005-04-08 Car body mounting structure of electric junction box for automobile

Country Status (1)

Country Link
JP (1) JP4275641B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9566668B2 (en) 2007-01-04 2017-02-14 Alpha Metals, Inc. Flux formulations
WO2010150510A1 (en) * 2009-06-26 2010-12-29 日本特殊陶業株式会社 Circuit board containing unit
DE102009029476B4 (en) * 2009-09-15 2012-11-08 Lisa Dräxlmaier GmbH Electronic device for switching currents and manufacturing method for the same
JP6878119B2 (en) * 2017-04-26 2021-05-26 矢崎総業株式会社 Electrical junction box and wire harness
CN115996552B (en) * 2023-03-22 2023-06-13 武汉嘉晨电子技术有限公司 Automobile BDU heat dissipation structure and manufacturing method thereof

Also Published As

Publication number Publication date
JP2006296072A (en) 2006-10-26

Similar Documents

Publication Publication Date Title
US7291024B2 (en) Electric distribution box
JP6521171B2 (en) Circuit structure
JP4387314B2 (en) Electrical junction box
JP4275641B2 (en) Car body mounting structure of electric junction box for automobile
JP5991344B2 (en) Pump cover
JP2003237508A (en) Bumper structure for vehicle
JP2005117887A (en) Mounting structure of on-vehicle circuit unit, and on-vehicle circuit unit
JP3094152B2 (en) Electrical junction box
EP1865758B1 (en) Metal core substrate reinforcing structure and electric connection box
JP4923909B2 (en) Control unit mounting structure for automobiles
JP2015090289A (en) Obstacle detection apparatus
JP5147606B2 (en) Fuse block
JPH11215657A (en) Power distribution box
JP2006271132A (en) Fixed structure of electric connection box for car
JP5882163B2 (en) Radiator grill
JP6959041B2 (en) Electrical junction box and its installation structure
JP4349289B2 (en) Electrical junction box
KR102436501B1 (en) Inclined electrical unit above the wheel arch of the vehicle
JP5203416B2 (en) Mounting structure for in-vehicle circuit unit and electrical junction box
JP4524667B2 (en) Electrical junction box
JP2005057842A (en) Electric junction box
JP7275979B2 (en) vehicle battery pack
JP2007295706A (en) Electrical connection box
WO2016043204A1 (en) Electrical connection box
JP2017171220A (en) Electronic control device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070618

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080813

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081007

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081204

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

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090303

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090304

R150 Certificate of patent or registration of utility model

Ref document number: 4275641

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120313

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130313

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140313

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees