JP2017022916A - Connection unit for on-vehicle equipment - Google Patents

Connection unit for on-vehicle equipment Download PDF

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JP2017022916A
JP2017022916A JP2015140076A JP2015140076A JP2017022916A JP 2017022916 A JP2017022916 A JP 2017022916A JP 2015140076 A JP2015140076 A JP 2015140076A JP 2015140076 A JP2015140076 A JP 2015140076A JP 2017022916 A JP2017022916 A JP 2017022916A
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vehicle
power supply
connection unit
connection
power source
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JP6494030B2 (en
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富田　直樹
Naoki Tomita
直樹 富田
勇 筒井
Isamu Tsutsui
勇 筒井
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Techtom Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a connection unit for on-vehicle equipment, enabling secure protection of vehicle information immediately before an on-vehicle power supply is damaged even on the occurrence of a situation to cause damage to the on-vehicle power supply.SOLUTION: A connection unit 1 for on-vehicle equipment which connects on-vehicle equipment 2, which is operated by receiving power supply from an on-vehicle power supply 31 loaded on a vehicle to acquire vehicle information, to a fault diagnosis connector C, which is a connection port provided on the vehicle, includes connection means 14 which connects an auxiliary power supply 13 to the on-vehicle equipment 2. The connection unit 1 further includes an acceleration sensor 15 which, on the occurrence of a situation which leads to damage to the on-vehicle power supply during vehicle operation, detects the occurrence of the situation before the on-vehicle power supply is damaged. The connection means also performs power supply from the auxiliary power supply at detection by the acceleration sensor.SELECTED DRAWING: Figure 3

Description

本発明は、車両に設けられた接続ポートに、この車両に搭載された車載電源から電力供給を受けて作動し、車両情報を取得する車載器を接続する車載器用の接続ユニットに関する。   The present invention relates to a connection unit for an in-vehicle device that is connected to an on-vehicle device that operates by receiving power supply from an on-vehicle power source mounted on the vehicle to a connection port provided in the vehicle and acquires vehicle information.

近年、自動車（車両）のＥＣＵ（Engine Control Unit）の出力端子（接続ポート）たる故障診断コネクタに接続される通信機能付き車載器が注目されている。このような車載器は、通常、電力供給ラインと通信ラインとを接続ポートに接続する（例えば、特許文献１参照）。そして、車載器は、車載電源としてのバッテリから電力供給を受けて作動し、ＥＣＵから取得した車両情報をＲＡＭなどの記憶部で記憶し、この記憶済みの車両情報を要求に応じて通信部により車内に設置されるディスプレイや、無線通信自在に接続されるサーバなどの外部装置に出力できるようにしている。これにより、ユーザは、取得した車両情報を運行管理や運転傾向分析等に利用することができる。   2. Description of the Related Art In recent years, an in-vehicle device with a communication function that is connected to a failure diagnosis connector that is an output terminal (connection port) of an ECU (Engine Control Unit) of an automobile (vehicle) has attracted attention. Such an in-vehicle device usually connects a power supply line and a communication line to a connection port (see, for example, Patent Document 1). The vehicle-mounted device operates by receiving power supply from a battery as a vehicle-mounted power source, stores vehicle information acquired from the ECU in a storage unit such as a RAM, and stores the stored vehicle information by a communication unit upon request. It can be output to an external device such as a display installed in a car or a server connected wirelessly. Thereby, the user can use the acquired vehicle information for operation management, driving tendency analysis, and the like.

ここで、車両には、その運行中、衝突事故などで車載電源の破損（車載電源自体が破損した場合だけでなく、車載電源自体は破損していないが電力供給回路などが破損した場合を含む）を招く事態が発生することがある。この場合には、車載器への電力供給が途絶し、これに起因して記憶済みの車両情報が消失してしまうという不具合がある。車載電源が破損して電力供給が途絶する直前まで取得される車両情報は、例えば事故の発生状況を解析する上で有用である。従って、このような情報を如何にして保護するかが重要な課題となっている。   Here, in the vehicle, the vehicle power supply is damaged due to a collision accident during operation (including not only the case where the vehicle power supply itself is damaged, but also the case where the power supply circuit etc. is damaged although the vehicle power supply itself is not damaged) ) May occur. In this case, there is a problem in that the power supply to the vehicle-mounted device is interrupted and the stored vehicle information is lost due to this interruption. The vehicle information acquired until just before the on-vehicle power supply is damaged and the power supply is interrupted is useful for analyzing the occurrence of an accident, for example. Therefore, how to protect such information is an important issue.

特開２０１４−４０２４３号公報JP 2014-40243 A

本発明は、以上の点に鑑み、車両に、車載電源の破損を招く事態が発生したときでも、車載電源が破損する直前までの車両情報を確実に保護できるようにした車載器用の接続ユニットを提供することをその課題とするものである。   In view of the above points, the present invention provides a connection unit for an in-vehicle device that can reliably protect vehicle information until immediately before the in-vehicle power source is damaged even when a situation in which the in-vehicle power source is damaged occurs in the vehicle. The issue is to provide.

上記課題を解決するために、車両に設けられた接続ポートに、この車両に搭載された車載電源から電力供給を受けて作動し、車両情報を取得する車載器を接続する本発明の車載器用の接続ユニットは、車載器に補助電源を接続する接続手段を備え、車両の運行中に車載電源の破損につながる事態が発生したとき、この事態の発生を車載電源の破損前に検知する検知手段を設け、前記接続手段は、検知手段の検知時に補助電源からの電力供給も行うことを特徴とする。   In order to solve the above-described problems, the connection port provided in the vehicle is connected to the vehicle-mounted device that operates by receiving power supply from the vehicle-mounted power supply mounted on the vehicle and acquires vehicle information. The connection unit includes a connection means for connecting an auxiliary power supply to the vehicle-mounted device, and a detection means for detecting the occurrence of this situation before the vehicle power supply is damaged when a situation that leads to damage of the vehicle power supply occurs during operation of the vehicle. The connecting means also supplies power from an auxiliary power source when detected by the detecting means.

本発明によれば、検知手段を設けて衝突事故等で車載電源の破損につながる事態の発生を検知し、車載電源が破損しているか否かにかかわらず、補助電源からも車載器に対して電力供給を行うようにしたため、実際に車載電源が破損したとしても、車載器への電力供給が途絶することはなく、記憶済みの車両情報が消失してしまうといった不具合は生じない。これにより、取得した車両情報を常時有効に保護することができる。   According to the present invention, the detection means is provided to detect the occurrence of a situation that leads to damage of the in-vehicle power source due to a collision accident or the like, and whether the in-vehicle power source is damaged or not, the auxiliary power source also applies to the in-vehicle device. Since power is supplied, even if the in-vehicle power supply is actually damaged, the power supply to the in-vehicle device is not interrupted, and the inconvenience that the stored vehicle information is lost does not occur. Thereby, the acquired vehicle information can be always effectively protected.

本発明において、車載器が、取得した車両情報をサーバなどの外部装置に出力する通信部を備える場合、補助電源から電力供給を受けて作動したとき、可及的速やかに通信部を介してサーバなどの外部装置に出力するように構成しておけば、取得した車両情報をより確実に保護することができる。しかも、補助電源は、車両情報を外部装置に出力するまでの間、車載器に対して電力供給できればよいため、補助電源の容量は少なくて済み、小型化、軽量化を図る上で有利である。   In the present invention, when the vehicle-mounted device includes a communication unit that outputs the acquired vehicle information to an external device such as a server, when the device is operated by receiving power supply from the auxiliary power source, the server is quickly connected via the communication unit. If it is configured to output to an external device such as, the acquired vehicle information can be more reliably protected. Moreover, since the auxiliary power supply only needs to be able to supply power to the vehicle-mounted device until the vehicle information is output to the external device, the capacity of the auxiliary power supply is small, which is advantageous in reducing the size and weight. .

本発明において、前記検知手段は、車両に加わる加速度、衝撃または振動を検出するセンサを備え、センサの検出値が所定の閾値を超えると、電源が破損する状況が発生したと判断することが好ましい。これによれば、車載電源の破損につながる事態の発生を確実に検知する構成が実現できる。   In the present invention, it is preferable that the detection unit includes a sensor that detects acceleration, impact, or vibration applied to the vehicle, and determines that a situation in which the power source is damaged occurs when a detection value of the sensor exceeds a predetermined threshold value. . According to this, the structure which detects reliably generation | occurrence | production of the situation which leads to a failure | damage of a vehicle-mounted power supply is realizable.

本発明において、前記補助電源及び接続手段が一体に設けるように構成すれば、接続ユニットの小型化を図る上で有利である。   In the present invention, if the auxiliary power supply and the connection means are provided integrally, it is advantageous in reducing the size of the connection unit.

本発明において、車載電源の電力を車載器に供給する電力供給ラインを備え、前記補助電源を、前記接続手段を介して前記電力供給ラインに接続すれば、検知手段の検知時に、補助電源の電力を電力供給ラインを介して車載器に供給することができる。   In the present invention, if the power supply line for supplying the power of the vehicle-mounted power supply to the vehicle-mounted device is provided, and the auxiliary power supply is connected to the power supply line via the connection means, the power of the auxiliary power supply is detected at the time of detection by the detection means. Can be supplied to the vehicle-mounted device via the power supply line.

本発明の実施形態の車載器用の接続ユニットの使用状態を示す図。The figure which shows the use condition of the connection unit for onboard equipment of embodiment of this invention. 接続ユニットの外観を示す斜視図。The perspective view which shows the external appearance of a connection unit. 接続ユニットの内部構造を示すブロック図。The block diagram which shows the internal structure of a connection unit. （ａ）及び（ｂ）は、接続ユニットのコネクタに設けた脱落防止機構を示す図。(A) And (b) is a figure which shows the drop-off prevention mechanism provided in the connector of the connection unit. 接続ユニットの変形例の内部構造を示すブロック図。The block diagram which shows the internal structure of the modification of a connection unit.

以下、図面を参照して、車両に設けられた接続ポートたる故障診断コネクタに、この車両に搭載された車載電源としてのバッテリから電力供給を受けて作動し、車両情報を取得して外部装置に出力する車載器を接続するための本発明の車載器用の接続ユニットの実施形態を説明する。   Hereinafter, referring to the drawings, a failure diagnosis connector, which is a connection port provided in a vehicle, operates by receiving power supply from a battery as an in-vehicle power source mounted on the vehicle, acquires vehicle information, and transmits it to an external device. An embodiment of a connection unit for an in-vehicle device of the present invention for connecting an on-vehicle device to be output will be described.

図１及び図２を参照して、１は、本実施形態の接続ユニットである。接続ユニット１は、所定長さの延長接続手段１０を備え、延長接続手段１０の一端には、故障診断コネクタＣに接続可能なコネクタ（ＤＴＣ）１０ａが設けられ、その他端には、車載器２の接続ポート２０に接続可能なコネクタ１０ｂが設けられている。尚、コネクタ１０ｂの形状は、図２に示す形状に限定されず、車載器２の接続ポート２０の形状に応じて適宜決定することができる。そして、コネクタ１０ａを故障診断コネクタＣに差し込み、コネクタ１０ｂを接続ポート２０に差し込むことで、車載器２が故障診断コネクタＣに接続される。尚、図１及び図２では、ケーブル形状の延長接続手段１０として図示しているが、延長接続手段１０の実施形態は本形状に限定されず、例えば、アダプタ形状やボックス形状で構成することもできる。   With reference to FIG.1 and FIG.2, 1 is the connection unit of this embodiment. The connection unit 1 includes an extension connection means 10 having a predetermined length. One end of the extension connection means 10 is provided with a connector (DTC) 10a that can be connected to the failure diagnosis connector C. A connector 10b that can be connected to the connection port 20 is provided. In addition, the shape of the connector 10b is not limited to the shape shown in FIG. 2, but can be suitably determined according to the shape of the connection port 20 of the vehicle-mounted device 2. Then, the vehicle-mounted device 2 is connected to the failure diagnosis connector C by inserting the connector 10 a into the failure diagnosis connector C and inserting the connector 10 b into the connection port 20. 1 and 2, the cable-shaped extension connecting means 10 is illustrated, but the embodiment of the extension connecting means 10 is not limited to this shape, and may be configured in an adapter shape or a box shape, for example. it can.

図３も参照して、延長接続手段１０は、コネクタ１０ａを介して車載電源３１に接続されて、車載電源３１からの電力を車載器２に供給するための電力供給ライン１１と、コネクタ１０ａを介してＥＣＵ３２に接続されて、ＥＣＵ３２からの車両情報を取得するための通信ライン１２とを有する。尚、延長接続手段１０がアダプタ形状やボックス形状で構成される場合、電力供給ライン１１及び通信ライン１２は、配線の形状やプリント基板に形成される導電パターンの形状で形成することができる。   Referring also to FIG. 3, the extension connecting means 10 is connected to the in-vehicle power source 31 through the connector 10a, and includes a power supply line 11 for supplying power from the in-vehicle power source 31 to the in-vehicle device 2, and the connector 10a. And a communication line 12 for obtaining vehicle information from the ECU 32. When the extension connecting means 10 is configured in an adapter shape or a box shape, the power supply line 11 and the communication line 12 can be formed in a wiring shape or a conductive pattern shape formed on a printed board.

車載器２としては、公知のものが利用され、一般に、電源回路２１と、制御部２２と、車両情報取得部２３と、メモリ２４と、無線通信部２５とを有する。制御部２２としては、演算処理を行うＣＰＵと、各種制御プログラムが格納されたＲＯＭとを備える公知のものを用いることができる。車載器２は、電力供給ライン１１を介して車載電源３１からの電力供給を受けて作動し、通信ライン１２を介してＥＣＵ３２からの車両情報を取得し、取得した車両情報をＲＡＭなどの記憶部２４に記憶する。この場合、取得した車両情報を燃費や車間距離などに変換して記憶部２４に記憶することができる。また、図示省略の車載ディスプレイに車両情報を表示することもできる。そして、記憶部２４に記憶した車両情報を所定のタイミングで読み出し、読み出した車両情報を無線通信部２５からサーバなどの外部装置４に出力（無線送信）する。外部装置４に出力された車両情報は、通常、情報取得者によって運行管理、運転傾向分析や事故発生状況解析に利用される。   As the vehicle-mounted device 2, a known device is used, and generally includes a power supply circuit 21, a control unit 22, a vehicle information acquisition unit 23, a memory 24, and a wireless communication unit 25. As the control unit 22, a known unit including a CPU that performs arithmetic processing and a ROM that stores various control programs can be used. The vehicle-mounted device 2 operates by receiving power supply from the vehicle-mounted power supply 31 via the power supply line 11, acquires vehicle information from the ECU 32 via the communication line 12, and stores the acquired vehicle information in a storage unit such as a RAM. 24. In this case, the acquired vehicle information can be converted into fuel consumption, inter-vehicle distance, and the like and stored in the storage unit 24. Moreover, vehicle information can also be displayed on a vehicle-mounted display (not shown). And the vehicle information memorize | stored in the memory | storage part 24 is read at a predetermined timing, and the read vehicle information is output (radio transmission) to the external devices 4 such as a server from the radio communication unit 25. The vehicle information output to the external device 4 is normally used by the information acquirer for operation management, driving tendency analysis, and accident occurrence situation analysis.

ところで、車両は、その運行中、衝突事故などで車載電源３１が破損することがある。このとき、車載電源３１から車載器２への電力供給が途絶すると、記憶部２４に記憶済みの車両情報が消失してしまう。このような車両情報は例えば事故の発生状況を解析する上で有用であるため、記憶部２４に記憶済みの車両情報を保護する必要がある。   By the way, during the operation of the vehicle, the in-vehicle power supply 31 may be damaged due to a collision accident or the like. At this time, if the power supply from the in-vehicle power supply 31 to the in-vehicle device 2 is interrupted, the vehicle information stored in the storage unit 24 is lost. Such vehicle information is useful, for example, in analyzing the occurrence of an accident, so it is necessary to protect the vehicle information stored in the storage unit 24.

そこで、本実施形態では、接続ユニット１に、延長接続手段１０の電力供給ライン１１に接続される補助電源１３と、補助電源１３を車載器２に接続する接続手段１４と、車載電源３１の破損につながる事態が発生したとき、この事態の発生を車載電源３１の破損前に検知する検知手段１５とを設けた。これらの補助電源１３、接続手段１４及び検知手段１５を延長接続手段１０の途中に設けた筐体１０ｃに一体的に収容した。これにより、接続ユニット１を小型化することができる。尚、筐体１０ｃの材質は、剛性や放熱性等を考慮して適宜設定できる。   Therefore, in the present embodiment, the auxiliary power source 13 connected to the power supply line 11 of the extension connecting means 10, the connecting means 14 for connecting the auxiliary power supply 13 to the vehicle-mounted device 2, and the in-vehicle power supply 31 are damaged. And a detecting means 15 for detecting the occurrence of the situation before the in-vehicle power source 31 is damaged. These auxiliary power supply 13, connection means 14 and detection means 15 were integrally accommodated in a housing 10 c provided in the middle of the extension connection means 10. Thereby, the connection unit 1 can be reduced in size. The material of the housing 10c can be set as appropriate in consideration of rigidity, heat dissipation, and the like.

補助電源１３としては、例えば一次電池を用いることができる。接続手段１４としては、例えば、トランジスタやリレー回路を有するスイッチング素子を用いることができる。スイッチング素子としては公知のものを用いることができるため、本明細書では詳細な説明を省略する。検知手段１５としては、車両に加わる加速度を検出する３軸加速度センサを用いることができる。ここで、衝突事故が発生したとき、通常運行時に車両に加わる加速度に比べて著しく大きな加速度が特定方向に加わることから、加速度センサ１５の閾値を、通常運行時に加わる加速度よりも高い値に設定しておくことで、その閾値を超える加速度が車両に加わったときに、加速度センサ１５により車載電源３１が破損する状況が発生したと判断することができる。この場合、接続手段１４のスイッチング素子に圧電素子を付設し、検出手段１５の検出時に、圧電素子からスイッチング素子に電力供給して接点を接続することで、補助電源１３から電力供給ライン１１を介して車載器２に電力供給することができる。また、電力供給ライン１１に接続されて補助電源１３が設けられた補助電力供給ライン１１ａにダイオード１６を設けると共に、電力供給ライン１１の補助電力供給ライン１１ａとの接続点よりもコネクタ１０ａ側にダイオード１７を設けることで、接続手段１４による接点接続時に補助電源１３からの電流を車載器２だけに供給することができる。また、何らからの影響で車載電源３１の電圧が低下した場合に、補助電源１３からの電流が車載電源３１に向かって流れることを防止できる。   For example, a primary battery can be used as the auxiliary power source 13. As the connection means 14, for example, a switching element having a transistor or a relay circuit can be used. Since a known element can be used as the switching element, detailed description thereof is omitted in this specification. As the detection means 15, a three-axis acceleration sensor that detects acceleration applied to the vehicle can be used. Here, when a collision accident occurs, acceleration that is significantly greater than the acceleration applied to the vehicle during normal operation is applied in a specific direction, so the threshold value of the acceleration sensor 15 is set to a value higher than the acceleration applied during normal operation. Thus, when acceleration exceeding the threshold is applied to the vehicle, it can be determined that the situation in which the in-vehicle power supply 31 is damaged by the acceleration sensor 15 has occurred. In this case, a piezoelectric element is attached to the switching element of the connection means 14, and when the detection means 15 detects, power is supplied from the piezoelectric element to the switching element and the contact is connected, so that the auxiliary power supply 13 passes through the power supply line 11. Thus, power can be supplied to the vehicle-mounted device 2. In addition, a diode 16 is provided on the auxiliary power supply line 11a connected to the power supply line 11 and provided with the auxiliary power supply 13, and a diode on the connector 10a side of the connection point between the power supply line 11 and the auxiliary power supply line 11a. By providing 17, the current from the auxiliary power supply 13 can be supplied only to the vehicle-mounted device 2 at the time of contact connection by the connecting means 14. In addition, when the voltage of the in-vehicle power supply 31 decreases due to any influence, it is possible to prevent the current from the auxiliary power supply 13 from flowing toward the in-vehicle power supply 31.

上記実施形態によれば、検知手段１５を設けて、衝突事故等で車載電源３１の破損につながる事態の発生を検知し、車載電源３１が破損しているか否かにかかわらず、車載電源３１から車載器２に対して電力供給されている状態であっても、接続手段１４によって補助電源１３から車載器２に対して電力供給される。このため、実際に車載電源３１が破損していたとしても、車載器２への電力供給が途絶することはなく、記憶部２４に記憶済の車両情報が消失してしまうといった不具合は生じない。これにより、ＥＣＵから取得した車両情報を常時有効に保護することができる。従って、例えば衝突事故に起因して車載電源３１が破損する直前までに取得した車両情報（つまり、衝突事故直前の車両情報）を確実に保護することができる。   According to the above embodiment, the detection means 15 is provided to detect the occurrence of a situation that leads to the damage of the in-vehicle power supply 31 due to a collision accident or the like, and whether or not the in-vehicle power supply 31 is damaged, Even when power is supplied to the vehicle-mounted device 2, power is supplied from the auxiliary power supply 13 to the vehicle-mounted device 2 by the connecting means 14. For this reason, even if the vehicle-mounted power supply 31 is actually damaged, the power supply to the vehicle-mounted device 2 is not interrupted, and the inconvenience that the vehicle information stored in the storage unit 24 is lost does not occur. Thereby, the vehicle information acquired from ECU can always be protected effectively. Therefore, for example, vehicle information acquired immediately before the in-vehicle power source 31 is damaged due to a collision accident (that is, vehicle information immediately before the collision accident) can be reliably protected.

また、車載器２が補助電源１３から電力供給を受けて作動した場合、記憶部２４に記憶した車両情報を可及的速やかに読み出して外部装置４に出力するように、制御部２２を構成する（制御部２２により実行される制御プログラムを構成する場合を含む）ことで、取得した車両情報をより確実に保護することができる。これにより、補助電源１３は、記憶部２４から車両情報を読み出して外部装置４に出力するまでの間、車載器２に対して電力供給できればよいため、補助電源１３の容量は少なくて済み、接続ユニット１の小型化、軽量化を図る上で有利である。また、検知手段１５として加速度センサを用いることで、車載電源３１の破損につながる事態の発生を確実に検知する構成が実現できる。   In addition, when the vehicle-mounted device 2 operates by receiving power supply from the auxiliary power supply 13, the control unit 22 is configured to read out the vehicle information stored in the storage unit 24 as soon as possible and output it to the external device 4. By including (including a case where a control program executed by the control unit 22 is configured), the acquired vehicle information can be more reliably protected. As a result, the auxiliary power supply 13 only needs to be able to supply power to the vehicle-mounted device 2 until the vehicle information is read from the storage unit 24 and output to the external device 4. This is advantageous in reducing the size and weight of the unit 1. In addition, by using an acceleration sensor as the detection means 15, it is possible to realize a configuration that reliably detects the occurrence of a situation that leads to damage of the in-vehicle power supply 31.

ところで、補助電源を車載器２に内蔵することも考えられるが、車載器２がダッシュボードＤＢ上に設置されて直射日光が当たる場合には、補助電源が高温になるため、補助電源が早期に劣化する。それに対して、本実施形態では、延長接続手段１０の途中に設けられた筐体１０ｃ内に補助電源１３が収容されるため、筐体１０ｃを固定する位置を適宜決定することで、補助電源１３を任意の位置に取り付けることができる。これにより、車載器２がダッシュボードＤＢ上に設置されても、補助電源１３の温度上昇を抑制することができ、補助電源１３の早期劣化を防止できる。また、車載器２は、ダッシュボードＤＢ上に設置するのではなく、適宜に配線を行って設置することも多く、本実施形態の如く延長接続手段１０の途中に補助電源１３を設けることで、補助電源を持たない車載器であっても利用できるだけでなく、車載器２に補助電源を新たに設けるに当たって問題となる空間上の制約を解消できて有利である。   By the way, it is conceivable that the auxiliary power supply is built in the vehicle-mounted device 2, but when the vehicle-mounted device 2 is installed on the dashboard DB and is exposed to direct sunlight, the auxiliary power supply becomes high temperature, so the auxiliary power supply becomes early. to degrade. On the other hand, in the present embodiment, since the auxiliary power supply 13 is accommodated in the housing 10c provided in the middle of the extension connecting means 10, the auxiliary power supply 13 is determined by appropriately determining the position where the housing 10c is fixed. Can be attached at any position. Thereby, even if the onboard equipment 2 is installed on dashboard DB, the temperature rise of the auxiliary power supply 13 can be suppressed and the early deterioration of the auxiliary power supply 13 can be prevented. In addition, the in-vehicle device 2 is not installed on the dashboard DB, but is often installed with appropriate wiring, and by providing the auxiliary power supply 13 in the middle of the extension connecting means 10 as in the present embodiment, Not only can the vehicle-mounted device that does not have an auxiliary power supply be used, but it is advantageous in that it can eliminate restrictions on the space that are problematic when the auxiliary power supply is newly provided in the vehicle-mounted device 2.

また、衝突事故が発生したときに、コネクタ１０ａが故障診断コネクタＣから脱落する場合がある。この場合、ＥＣＵ３２からの車両情報を取得することができなくなるため、衝突事故が発生してもコネクタ１０ａが脱落し難い構成（脱落防止機構）を採用することが望ましい。例えば、図４（ａ）に示すように、コネクタ１０ａの上部に設けられた爪部１００ａが、故障診断コネクタＣの上部に設けられた係止部１０１に係止することで両者を固定する構成や、図４（ｂ）に示すように、コネクタ１０ａの上部に設けられた爪部１００ｂが、故障診断コネクタＣの上部から上方に起立して設けられた起立部１０２の係合穴１０２ａに挿入されて係合することで両者を固定する構成を採用することができる。また、図示は省略するが、図４（ｂ）に示す爪部１００ｂに代えてコネクタ１０ａの上部にも起立部を設け、両起立部をボルト、ネジまたはタイラップ等の公知の固定方法により固定する構成を採用することもできる。このような構成を採用すれば、衝突事故が発生したときに、コネクタ１０ａの脱落を防止できるため、車両情報を確実に取得することができる。尚、上記構成によれば、運転者の過失（例えば、延長接続手段１０に足を引っ掛けたり、誤ってコネクタ１０ａを引き抜いたりする等）によるコネクタ１０ａの脱落を防止できるという効果も得られる。   In addition, when a collision accident occurs, the connector 10a may drop from the failure diagnosis connector C. In this case, vehicle information from the ECU 32 cannot be acquired. Therefore, it is desirable to employ a configuration (a drop prevention mechanism) in which the connector 10a is not easily dropped even if a collision accident occurs. For example, as shown in FIG. 4A, a configuration in which a claw portion 100a provided on the upper portion of the connector 10a is locked to a locking portion 101 provided on the upper portion of the failure diagnosis connector C, thereby fixing both of them. 4B, the claw portion 100b provided at the upper portion of the connector 10a is inserted into the engagement hole 102a of the rising portion 102 provided upright from the upper portion of the failure diagnosis connector C. Thus, it is possible to adopt a configuration in which both are fixed by engaging. Further, although not shown in the figure, an upright portion is provided also on the upper portion of the connector 10a instead of the claw portion 100b shown in FIG. 4B, and both the upright portions are fixed by a known fixing method such as a bolt, a screw, or a tie wrap. A configuration can also be adopted. By adopting such a configuration, it is possible to prevent the connector 10a from falling off when a collision accident occurs, so that vehicle information can be acquired with certainty. In addition, according to the said structure, the effect that the fall of the connector 10a by a driver | operator's negligence (for example, hooking a leg on the extension connection means 10, or pulling out the connector 10a accidentally) can be prevented is also acquired.

以上、本発明の実施形態について説明したが、本発明は上記のものに限定されるものではない。上記実施形態では、検知手段１５が加速度センサを備える場合を例に説明したが、加速度センサの代わりに衝撃センサまたは振動センサを用いることができる。この場合も、通常運行時に加わる衝撃や振動よりも高い閾値を設定すれば、その閾値を超える衝撃や振動が車両に加わったときに、車載電源３１が破損する状況が発生したと判断することができる。   As mentioned above, although embodiment of this invention was described, this invention is not limited to said thing. In the above embodiment, the case where the detection unit 15 includes an acceleration sensor has been described as an example, but an impact sensor or a vibration sensor can be used instead of the acceleration sensor. In this case as well, if a threshold value higher than the impact and vibration applied during normal operation is set, it can be determined that a situation has occurred in which the in-vehicle power supply 31 is damaged when an impact or vibration exceeding the threshold value is applied to the vehicle. it can.

上記実施形態では、無線通信部２５から外部装置４に車両情報を出力した後も補助電源１３からの電力供給を継続しているが、外部装置４への車両情報の出力を可及的速やかに行うように制御部２２が構成されているため、出力後の電力供給は無駄になる。そこで、図５に示すように、計時機能を有すると共に検知手段１５の検知結果に基づき接続手段１４の接点操作を制御する制御回路１８を設け、検知手段１５による検知直後から制御回路１８により所定時間を計時すると、接続手段１４の接点を開放して補助電源１３からの電力供給を停止するように構成してもよい。これによれば、記憶部２４から読み出した車両情報を外部装置４へ出力するために必要な電力量のみが補助電源１３から供給されるため、補助電源１３の残電力を他の機会に使用することが可能となり、当該接続ユニット１を他の車両に装着して再利用することも可能となる。尚、所定時間は、外部装置４との間の通信頻度を考慮して適宜設定することができる。   In the above embodiment, the power supply from the auxiliary power supply 13 is continued after the vehicle information is output from the wireless communication unit 25 to the external device 4. However, the output of the vehicle information to the external device 4 is performed as quickly as possible. Since the control unit 22 is configured to do so, power supply after output is wasted. Therefore, as shown in FIG. 5, a control circuit 18 having a time measuring function and controlling the contact operation of the connection means 14 based on the detection result of the detection means 15 is provided, and immediately after the detection by the detection means 15 is performed by the control circuit 18 for a predetermined time. May be configured to stop the power supply from the auxiliary power supply 13 by opening the contact of the connecting means 14. According to this, since only the amount of electric power necessary for outputting the vehicle information read from the storage unit 24 to the external device 4 is supplied from the auxiliary power source 13, the remaining power of the auxiliary power source 13 is used for other occasions. Thus, the connection unit 1 can be mounted on another vehicle and reused. The predetermined time can be appropriately set in consideration of the frequency of communication with the external device 4.

また、加速度センサ１５に対して上記車載電源３１が破損する状況の発生を検知する閾値よりも低い閾値を更に設定しておくことで、車両の停止を検知することができる。ダイオード１７と並列に接続手段１９を設け、加速度センサ１５による車両停止検知時に、接続手段１９の接点を接続することでダイオード１７をバイパスさせることができる。この場合、加速度センサ１５で測定される加速度に基づき制御回路１８により車両が動いたと判断したとき、接続手段１９の接点を開放するように構成すれば、車両停止時にダイオード１７の車両に対する影響が避けられる。   Further, by further setting a threshold lower than the threshold for detecting the occurrence of the situation in which the in-vehicle power supply 31 is damaged in the acceleration sensor 15, it is possible to detect the stop of the vehicle. The connecting means 19 is provided in parallel with the diode 17, and the diode 17 can be bypassed by connecting the contact of the connecting means 19 when the acceleration sensor 15 detects the vehicle stop. In this case, if the control circuit 18 determines that the vehicle has moved based on the acceleration measured by the acceleration sensor 15, the contact of the connecting means 19 can be opened to avoid the influence of the diode 17 on the vehicle when the vehicle is stopped. It is done.

上記実施形態では、金属製の筐体１０ｃ内に補助電源１３、接続手段１４及び検知手段１５を収納する場合を例について説明したが、筐体１０ｃの材料はこれに限定されず樹脂製であってもよい。また、筐体１０ｃ内に補助電源１３、接続手段１４及び検知手段１５を収納するのではなく、これらの補助電源１３、接続手段１４及び検知手段１５を例えば粘着テープ等の公知の固定手段を用いて延長接続手段１０に固定することもできる。また、延長接続手段１０をアダプタ（あるいはボックス）の形状で構成する場合には、補助電源１３、接続手段１４及び検知手段１５を延長接続手段１０の内部に収容することもできる。   In the above embodiment, the case where the auxiliary power supply 13, the connection means 14, and the detection means 15 are accommodated in the metal casing 10c has been described as an example. However, the material of the casing 10c is not limited to this and is made of resin. May be. In addition, the auxiliary power supply 13, the connection means 14, and the detection means 15 are not housed in the housing 10c, but the auxiliary power supply 13, the connection means 14 and the detection means 15 are, for example, known fixing means such as an adhesive tape. Thus, the extension connecting means 10 can be fixed. Further, when the extension connecting means 10 is configured in the form of an adapter (or box), the auxiliary power supply 13, the connecting means 14, and the detecting means 15 can be accommodated inside the extension connecting means 10.

上記実施形態では、延長接続手段１０がケーブル形状の接続ユニット１を例に説明したが、延長接続手段１０をアダプタ（あるいはボックス）の形状で構成する場合、アダプタに車載器２の接続ポート２０に差し込むコネクタと故障診断コネクタＣに差し込むコネクタを設けることで、故障診断コネクタＣと車載器２との間に介設することができる。この場合、アダプタの分だけ車載器２が運転者の近くに位置し、それにより運転者が車載器２に誤って接触して車載器２が脱落する可能性があるため、図４（ａ）及び（ｂ）に示すような脱落防止用機構を採用することが好ましい。   In the above embodiment, the extension connection means 10 has been described by taking the cable-shaped connection unit 1 as an example. However, when the extension connection means 10 is configured in the shape of an adapter (or box), the adapter is connected to the connection port 20 of the vehicle-mounted device 2. By providing the connector to be inserted and the connector to be inserted into the failure diagnosis connector C, the failure diagnosis connector C and the vehicle-mounted device 2 can be interposed. In this case, the vehicle-mounted device 2 is positioned closer to the driver by the amount of the adapter, so that the driver may accidentally contact the vehicle-mounted device 2 and the vehicle-mounted device 2 may drop out. And it is preferable to employ a drop-off prevention mechanism as shown in (b).

また、上記実施形態では、補助電源１３として一次電池を用いる場合を例に説明したが、補助電源１３はこれに限定されず、例えば、蓄電機能を有する二次電池やコンデンサを用いることもでき、この場合、蓄電に必要な公知の回路を接続ユニット１に適宜設ければよい。   In the above embodiment, the case where a primary battery is used as the auxiliary power source 13 has been described as an example. However, the auxiliary power source 13 is not limited thereto, and for example, a secondary battery or a capacitor having a power storage function can be used. In this case, a known circuit necessary for power storage may be provided in the connection unit 1 as appropriate.

また、上記実施形態では、車両が自動車である場合を例に説明したが、車両が建機や農機等である場合にも、本発明を適用することができる。   In the above embodiment, the case where the vehicle is an automobile has been described as an example. However, the present invention can also be applied to a case where the vehicle is a construction machine, an agricultural machine, or the like.

Ｃ…故障診断コネクタ（接続ポート）、１…車載器用の接続ユニット、２…車載器、４…外部装置、１１…電力供給ライン、１３…補助電源、１４…接続手段、１５…加速度センサ，衝撃センサ，振動センサ（検知手段）、３１…車載電源。   C ... Fault diagnosis connector (connection port), 1 ... connection unit for vehicle-mounted device, 2 ... vehicle-mounted device, 4 ... external device, 11 ... power supply line, 13 ... auxiliary power supply, 14 ... connection means, 15 ... acceleration sensor, impact Sensor, vibration sensor (detection means), 31...

Claims (4)

車両に設けられた接続ポートに、この車両に搭載された車載電源から電力供給を受けて作動し、車両情報を取得する車載器を接続する車載器用の接続ユニットにおいて、
車載器に補助電源を接続する接続手段を備え、
車両の運行中に車載電源の破損につながる事態が発生したとき、この事態の発生を車載電源の破損前に検知する検知手段を設け、前記接続手段は、検知手段の検知時に補助電源からの電力供給も行うことを特徴とする車載器用の接続ユニット。 In the connection unit for the vehicle-mounted device that is connected to the vehicle-mounted device that operates by receiving power supply from the vehicle-mounted power source mounted on the vehicle, and connects the vehicle-mounted device that acquires vehicle information to the connection port provided in the vehicle,
A connection means for connecting an auxiliary power supply to the vehicle-mounted device,
When a situation that leads to breakage of the in-vehicle power source occurs during operation of the vehicle, a detecting means is provided for detecting the occurrence of this situation before the in-vehicle power source is broken. A connection unit for in-vehicle devices, characterized by supply. 前記検知手段は、車両に加わる加速度、衝撃または振動を検出するセンサを備え、センサの検出値が所定の閾値を超えると、前記事態が発生したと判断することを特徴とする請求項１記載の車載器用の接続ユニット。   The said detection means is provided with the sensor which detects the acceleration applied to a vehicle, an impact, or a vibration, and when the detection value of a sensor exceeds a predetermined threshold value, it will judge that the said situation generate | occur | produced. Connection unit for in-vehicle devices. 前記補助電源、検知手段及び接続手段が、一体に設けられることを特徴とする請求項１または請求項２項記載の車載器用の接続ユニット。   3. The connection unit for on-vehicle equipment according to claim 1, wherein the auxiliary power source, the detection means, and the connection means are provided integrally. 請求項１〜３のいずれか１項記載の車載器用の接続ユニットであって、車載電源の電力を車載器に供給する電力供給ラインを備えるものにおいて、
前記補助電源は、前記接続手段を介して前記電力供給ラインに接続されることを特徴とする車載器用の接続ユニット。 The connection unit for on-vehicle device according to any one of claims 1 to 3, comprising a power supply line for supplying electric power of the on-vehicle power source to the on-vehicle device.
The auxiliary unit is connected to the power supply line through the connecting means.
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