JP2003090858A - Connection device for inspection of terminal electronic device - Google Patents
Connection device for inspection of terminal electronic deviceInfo
- Publication number
- JP2003090858A JP2003090858A JP2001286218A JP2001286218A JP2003090858A JP 2003090858 A JP2003090858 A JP 2003090858A JP 2001286218 A JP2001286218 A JP 2001286218A JP 2001286218 A JP2001286218 A JP 2001286218A JP 2003090858 A JP2003090858 A JP 2003090858A
- Authority
- JP
- Japan
- Prior art keywords
- electronic device
- inspection
- tester
- connector
- connection
- 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.)
- Pending
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- Measuring Leads Or Probes (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、建設機械等の作業
機に使用され、各種センサ等の末端電子機器あるいは該
末端電子機器に接続される系統の検査をテスターにより
行う場合に使用する検査用接続装置に関する。
【０００２】
【従来の技術】油圧ショベル等の建設機械においては、
油圧センサ等の圧力センサ、可変容量油圧ポンプや油圧
モータの傾転板の傾転角センサ、エンジンへの燃料の流
量を制御する機器の変位を検出するエンジンコントロー
ルセンサ、エンジン回転数センサ等の各種センサやこれ
らのセンサにつながる系統の保守点検をテスターを用い
て行う必要がある。このような検査を行う場合、従来は
各種センサをコントロール装置に接続するコネクタ（接
続具）の端子にテスターのリード棒を当てて行ってい
る。
【０００３】
【発明が解決しようとする課題】上述のように、従来は
テスターのリード棒をセンサ等の電子機器のコネクタの
端子に当てて検査を行っているが、これらの電子機器は
前記検査を行いにくい狭隘な場所等に設置されている場
合が多く、また、コネクタの端子形状がテスターのリー
ド棒に当てにくいため、検査が困難な場合が多い。この
ため、正確な検査結果が得にくくなり、検査結果の信頼
性が低く、測定を避ける場合もあるという問題点があ
る。また、検査結果が不正確となるため、検査対象とな
る電子機器を交換しても、故障が直らない場合もあっ
た。
【０００４】本発明は、上記問題点に鑑み、テスターに
よる電子機器やこれにつながる系統の検査が容易かつ正
確に行え、信頼性の高い検査結果が得られる電子機器の
検査用接続装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】請求項１の電子機器の検
査用接続装置は、マスター装置にケーブルおよび接続具
を介して接続される末端電子機器または該末端電子機器
に接続される系統をテスターにより検査する際に使用す
る検査用接続装置において、前記末端電子機器側に前記
ケーブル接続のために設けられる接続具に着脱自在に接
続される第1の接続具と、前記ケーブルの先端に設けら
れた接続具に着脱自在に接続される第２の接続具と、前
記第1の接続具と前記第２の接続具の各該当する端子間
をそれぞれ接続するリード線と、前記各リード線に結合
され、テスターのリード棒が接触可能なアダプタとから
なることを特徴とする。
【０００６】このように、末端電子機器との第１の接続
具と、マスター装置からのケーブルの接続具に接続され
る第２の接続具と、これらの接続具間のリード線と、各
リード線に結合され、テスターのリード棒が接触可能な
アダプタとを備えることにより、アダプタを末端電子機
器の接続具から離れた位置に引き出した状態でテスター
のリード棒を接触させることができ、かつアダプタはテ
スターのリード棒に接触しやすい構造に構成できるの
で、テスターによる検査が容易にかつ正確に行える。
【０００７】
【発明の実施の形態】図１は本発明による末端電子機器
の検査用接続装置の一実施の形態を示す斜視図である。
本実施の形態においては、末端電子機器１が、油圧ショ
ベルの油圧ポンプや油圧モータの傾転板の傾転角を検出
するセンサである場合について示す。２はマスター装置
であり、本実施の形態では油圧ポンプや油圧モータ等の
制御装置である。該マスター装置２は、通常は、前記末
端電子機器１に対し、ケーブル３ａ〜３ｃと、その先端
の接続具（コネクタ）４と、該接続具４に着脱自在に接
続される末端電子機器１の接続具（コネクタ）５とを介
して接続される。図２（Ａ）は作業中において、これら
のマスター装置２と末端電子機器１とが前記ケーブル３
や接続具４、５を介して接続されている状態を示す。
【０００８】本発明の検査用接続装置６は、テスター７
による検査を行うため、図２（Ａ）に示すように、これ
らの末端電子機器１とマスター装置２との間に介在させ
るか、あるいは図３（Ａ）、（Ｂ）に示すように、必要
であればいずれか一方に接続して使用されるものであ
る。
【０００９】前記検査用接続装置６は、末端電子機器１
に設けられた接続具５に着脱自在に接続される第1の接
続具９と、前記ケーブル３ａ〜３ｃの先端に設けられた
前記接続具４に着脱自在に接続される第２の接続具１０
と、前記第1の接続具９と前記第２の接続具１０の各該
当する端子間をそれぞれ接続するリード線１１ａ〜１１
ｃと、前記各リード線１１ａ〜１１ｃにそれぞれ結合さ
れ、テスター７のリード棒１２ａ、１２ｂが接触可能な
アダプタ１３ａ〜１３ｃとからなる。
【００１０】該検査用接続装置６は、一般的には図２
（Ｂ）に示すように、末端電子機器１とマスター装置２
との間に介在、接続して使用する。本実施の形態の場
合、ケーブル３ａは末端電子機器１に供給される電源ラ
イン、３ｃはアースライン、３ｂは検出出力ラインであ
り、機器の状態が正常であれば、ケーブル３ａ、３ｃと
の間、すなわちアダプタ１３ａと１３ｃとの間には所定
の電圧、例えば約５Ｖが現れる。この電圧は、アダプタ
１３ａ、１３ｃにそれぞれリード棒１２ａ、１２ｂに接
触させた状態でテスター７により検出される。
【００１１】前記アダプタ１３ａと１３ｃ間（すなわち
ケーブル３ａと３ｃ間）に電圧（５Ｖ）が現れない場
合、ケーブル３ａまたは３ｃの系統の断線または接触不
良が考えられる。その場合にはさらに検査を進め、油圧
ショベル機械本体のアース（図示せず）にリード棒１２
ｂを接触させるとともに、アダプタ１３ａにリード棒１
２ａを接触させたときに前記電圧（５Ｖ）が検出でき、
かつリード棒１２ａ、１２ｂのいずれか一方をアダプタ
１３ｃに接触させ、他方を前記アースに接触させて導通
が確認できなければ、アース線であるケーブル３ｃの系
統の断線や接触不良であると判断される。なお、本体ア
ースへのリード棒１２ｂの接触は、リード棒１２ｂを大
きな本体の電気的導通部へ当てればよいので、接触は容
易である。
【００１２】一方、前記アダプタ１３ａと１３ｃ間に電
圧（５Ｖ）が現れない場合に、前記本体アースにリード
棒１２ｂを接触させるとともに、アダプタ１３ａにリー
ド棒１２ａを接触させたときに前記電圧（５Ｖ）が検出
できず、かつリード棒１２ａ、１２ｂのいずれか一方を
アダプタ１３ｃに接触させ、他方を前記アースに接触さ
せて導通が確認できた場合には、電源線であるケーブル
３ａの系統の断線や接触不良であると判断される。
【００１３】また、前記アダプタ１３ａ、１３ｂにそれ
ぞれリード棒１２ａ、１２ｂを接触させて電圧を検出す
れば、末端電子機器１である傾転角センサにより、機械
の停止状態における油圧ポンプの傾転板の傾転角の基準
値（例えば基準２８．５度）に相当する電圧が検出され
る。
【００１４】このように、両端に接続具９、１０を有す
るリード線１１ａ〜１１ｃにテスター７のリード棒１２
ａ、１２ｂが接触されるアダプタ１３ａ〜１３ｃを設け
た検査用接続装置６を用いれば、末端電子機器の接続具
から離れた位置にアダプタ１３ａ〜１３ｃを引き出した
状態でテスター７のリード棒１２ａ、１２ｂを接触させ
ることができ、かつアダプタ１３ａ〜１３ｃはテスター
７のリード棒１２ａ、１２ｂが接触しやすい構造に構成
できるため、テスターによる検査が容易にかつ正確に行
える。また、正確な検査結果が得られるため、検査結果
の信頼性が高まり、適確な対応が可能となり、故障を確
実に直すことが可能となる。
【００１５】なお、ケーブル３ａ〜３ｃの系統の検査を
行う場合、図３（Ａ）のように末端電子機器１は切り離
し、検査用接続装置６をケーブル３ａ〜３ｃ側にのみ接
続して行う検査を取りいれてもよい。また、末端電子機
器１の構成等によっては、図３（Ｂ）のように、末端電
子機器１にのみ検査用接続装置６を接続して行う検査を
取りいれてもよい。
【００１６】本発明は、末端電子機器が圧力センサ、温
度センサ、エンジンへの燃料の流量を制御する機器の変
位を検出するエンジンコントロールセンサ、エンジン回
転数センサ等の各種センサ類あるいはセンサ以外の例え
ば表示機器等である場合にも適用することが可能であ
る。この場合、ケーブル３ａ〜３ｃやリード線１１ａ〜
１１ｃの本数や接続具９、１０の端子数や構造は、検査
対象となる末端電子機器の端子数や構造に対応して決定
される。
【００１７】
【発明の効果】請求項１によれば、末端電子機器の接続
具から離れた位置にアダプタを引き出した状態でテスタ
ーのリード棒を接触させることができ、かつアダプタは
テスターのリード棒が接触しやすい構造に構成できるた
め、テスターによる検査が容易にかつ正確に行える。ま
た、正確な検査結果が得られるため、検査結果の信頼性
が高まり、適確な対応が可能となり、故障を確実に直す
ことが可能となる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a working machine such as a construction machine, and inspects terminal electronic devices such as various sensors or a system connected to the terminal electronic devices. The present invention relates to a connection device for inspection used when the test is performed by a tester. [0002] In construction machines such as hydraulic excavators,
Various types of sensors, such as pressure sensors such as hydraulic sensors, tilt angle sensors for tilting plates of variable displacement hydraulic pumps and hydraulic motors, engine control sensors that detect displacement of equipment that controls the flow rate of fuel to the engine, and engine speed sensors It is necessary to use a tester for maintenance and inspection of the sensors and the system connected to these sensors. In the case of performing such an inspection, conventionally, a lead bar of a tester is applied to a terminal of a connector (connecting tool) for connecting various sensors to a control device. [0003] As described above, conventionally, the test is performed by applying the lead rod of a tester to the terminal of a connector of an electronic device such as a sensor. In many cases, it is installed in a narrow place or the like where it is difficult to perform the test, and the inspection is often difficult because the terminal shape of the connector is hard to hit the lead rod of the tester. For this reason, there is a problem that it is difficult to obtain an accurate inspection result, the reliability of the inspection result is low, and measurement may be avoided. In addition, since the inspection result becomes inaccurate, even if the electronic device to be inspected is replaced, the failure may not be fixed. The present invention has been made in view of the above problems, and provides an electronic device inspection connection device that can easily and accurately inspect an electronic device or a system connected to the electronic device by a tester and obtain a highly reliable test result. The purpose is to: According to a first aspect of the present invention, there is provided a connection apparatus for inspection of an electronic device, which is connected to a master device via a cable and a connector, or to the terminal electronic device. In a test connecting device used when testing a system by a tester, a first connecting device detachably connected to a connecting device provided for the cable connection on the terminal electronic device side, a tip of the cable A second connector removably connected to the connector provided in the first connector, a lead wire connecting each corresponding terminal of the first connector and the corresponding second connector, and each of the leads An adapter which is connected to the wire and to which a lead rod of the tester can be contacted. As described above, the first connector connected to the terminal electronic device, the second connector connected to the connector of the cable from the master device, the lead wires between these connectors, and each lead. An adapter which is connected to the wire and to which the lead rod of the tester can come in contact, so that the lead rod of the tester can be brought into contact with the adapter pulled out at a position away from the connector of the terminal electronic device; and Can be configured so as to easily contact the lead rod of the tester, so that the inspection by the tester can be performed easily and accurately. FIG. 1 is a perspective view showing an embodiment of a connection device for testing an end electronic device according to the present invention.
In the present embodiment, a case will be described in which the terminal electronic device 1 is a sensor that detects a tilt angle of a tilt plate of a hydraulic pump or a hydraulic motor of a hydraulic shovel. Reference numeral 2 denotes a master device, which in this embodiment is a control device such as a hydraulic pump or a hydraulic motor. Normally, the master device 2 is connected to the end electronic device 1 with the cables 3 a to 3 c, a connector (connector) 4 at the distal end thereof, and the end electronic device 1 detachably connected to the connector 4. It is connected via a connector (connector) 5. FIG. 2A shows that the master device 2 and the terminal electronic device 1 are connected to the cable 3 during operation.
And a state where they are connected via the connection tools 4 and 5. The test connection device 6 of the present invention comprises a tester 7
In order to perform the inspection according to (1), it is necessary to interpose between the terminal electronic device 1 and the master device 2 as shown in FIG. 2 (A), or as shown in FIGS. 3 (A) and 3 (B). If it is, it is used by connecting to either one. The inspection connection device 6 includes the terminal electronic device 1.
A first connecting tool 9 detachably connected to the connecting tool 5 provided on the second connector, and a second connecting tool 10 detachably connected to the connecting tool 4 provided at the tip of the cables 3a to 3c.
And lead wires 11a to 11 that respectively connect respective corresponding terminals of the first connector 9 and the second connector 10.
c, and adapters 13a to 13c which are respectively connected to the lead wires 11a to 11c and can contact the lead rods 12a and 12b of the tester 7. [0010] The inspection connection device 6 is generally configured as shown in FIG.
As shown in (B), the terminal electronic device 1 and the master device 2
Interposed between and used. In the case of the present embodiment, the cable 3a is a power supply line supplied to the terminal electronic device 1, 3c is a ground line, 3b is a detection output line, and if the state of the device is normal, the cable 3a is connected to the cable 3a, 3c. That is, a predetermined voltage, for example, about 5 V appears between the adapters 13a and 13c. This voltage is detected by the tester 7 with the adapters 13a and 13c in contact with the lead rods 12a and 12b, respectively. If no voltage (5 V) appears between the adapters 13a and 13c (that is, between the cables 3a and 3c), it is possible that the cable 3a or 3c is disconnected or has poor contact. In this case, the inspection is further performed, and the lead rod 12 is connected to the ground (not shown) of the excavator machine body.
b and contact the lead rod 1 with the adapter 13a.
The voltage (5V) can be detected when 2a is brought into contact,
If any one of the lead rods 12a and 12b is brought into contact with the adapter 13c and the other is brought into contact with the ground, and the continuity cannot be confirmed, it is determined that the system of the cable 3c, which is the ground wire, is broken or has poor contact. You. The contact of the lead rod 12b with the ground of the main body is easy because the lead rod 12b may be applied to the electrically conductive portion of the large main body. On the other hand, when the voltage (5 V) does not appear between the adapters 13a and 13c, the lead rod 12b is brought into contact with the main body ground and the voltage (5V) is brought into contact with the adapter 13a. ) Cannot be detected, and if one of the lead rods 12a and 12b is brought into contact with the adapter 13c and the other is brought into contact with the ground to confirm continuity, disconnection of the system of the cable 3a as a power supply line. Or poor contact. If the lead rods 12a and 12b are brought into contact with the adapters 13a and 13b, respectively, and the voltage is detected, the tilting angle sensor, which is the terminal electronic device 1, allows the tilting plate of the hydraulic pump to be stopped when the machine is stopped. Is detected, a voltage corresponding to the reference value of the tilt angle (for example, the reference 28.5 degrees) is detected. As described above, the lead rods 12a of the tester 7 are connected to the lead wires 11a to 11c having the connecting tools 9 and 10 at both ends.
If the inspection connection device 6 provided with the adapters 13a to 13c with which the a and 12b are in contact is used, the lead rods 12a of the tester 7 are pulled out in a state where the adapters 13a to 13c are pulled out at a position away from the connector of the terminal electronic device. 12b can be brought into contact, and the adapters 13a to 13c can be configured so that the lead rods 12a and 12b of the tester 7 can easily come into contact with each other, so that the tester can easily and accurately perform inspection. In addition, since an accurate inspection result can be obtained, the reliability of the inspection result is increased, an appropriate response can be made, and the failure can be surely corrected. When the system of the cables 3a to 3c is inspected, the terminal electronic device 1 is disconnected as shown in FIG. 3A, and the inspection connecting device 6 is connected only to the cables 3a to 3c. May be taken. In addition, depending on the configuration of the terminal electronic device 1 or the like, as shown in FIG. 3B, an inspection performed by connecting the inspection connection device 6 only to the terminal electronic device 1 may be included. The present invention provides various sensors other than sensors, such as an engine control sensor, an engine speed sensor, and the like, in which the terminal electronic device detects a displacement of a device for controlling the flow rate of fuel to the engine, such as a pressure sensor, a temperature sensor, and the like. The present invention can be applied to a display device or the like. In this case, the cables 3a to 3c and the lead wires 11a to 11a
The number of terminals 11c and the number and structure of the terminals of the connectors 9 and 10 are determined according to the number and structure of the terminals of the terminal electronic device to be inspected. According to the first aspect, the lead rod of the tester can be brought into contact with the lead rod of the tester in a state where the adapter is pulled out at a position away from the connector of the terminal electronic device, and the adapter is connected to the lead rod of the tester. Can be easily and accurately inspected by a tester. In addition, since an accurate inspection result can be obtained, the reliability of the inspection result is increased, an appropriate response can be made, and the failure can be surely corrected.
【図面の簡単な説明】
【図１】本発明による末端電子機器の検査用接続装置の
一実施の形態を示す斜視図である。
【図２】（Ａ）は通常のマスター装置と末端電子機器と
の接続状態を示す結線図、（Ｂ）は本実施の形態におい
て、検査を行う場合の一結線形態を示す結線図である。
【図３】（Ａ）、（Ｂ）は本実施の形態において、検査
を行う場合の他の結線形態をそれぞれ示す結線図であ
る。
【符号の説明】
１：末端電子機器、２：マスター装置、３ａ〜３ｃ：ケ
ーブル、４、５：接続具、６：検査用接続装置、７：テ
スター、９：第1の接続具、１０：第２の接続具、１１
ａ〜１１ｃ：リード線、１２ａ、１２ｂ：リード棒、１
３ａ〜１３ｃ：アダプタBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an inspection connection device for a terminal electronic device according to the present invention. FIG. 2A is a connection diagram illustrating a connection state between a normal master device and a terminal electronic device, and FIG. 2B is a connection diagram illustrating a connection configuration when an inspection is performed in the present embodiment. FIGS. 3A and 3B are connection diagrams showing other connection forms when an inspection is performed in the present embodiment. [Description of Signs] 1: Terminal electronics, 2: Master device, 3a to 3c: Cable, 4, 5: Connector, 6: Inspection connector, 7: Tester, 9: First connector, 10: Second connector, 11
a to 11c: lead wire, 12a, 12b: lead rod, 1
3a to 13c: Adapter
Claims (1)
して接続される末端電子機器または該末端電子機器に接
続される系統をテスターにより検査する際に使用する検
査用接続装置において、 前記末端電子機器側に前記ケーブル接続のために設けら
れる接続具に着脱自在に接続される第1の接続具と、 前記ケーブルの先端に設けられた接続具に着脱自在に接
続される第２の接続具と、 前記第1の接続具と前記第２の接続具の各該当する端子
間をそれぞれ接続するリード線と、 前記各リード線に結合され、テスターのリード棒が接触
可能なアダプタとからなることを特徴とする電子機器の
検査用接続装置。Claims: 1. An inspection connection device used for inspecting a terminal electronic device connected to a master device via a cable and a connector or a system connected to the terminal electronic device by a tester. In the first electronic device side, a first connector that is detachably connected to a connector provided for the cable connection on the end electronic device side, and a first connector that is detachably connected to a connector provided at a distal end of the cable. 2, a lead wire for connecting each corresponding terminal of the first connection tool and the corresponding terminal of the second connection tool, and an adapter coupled to each of the lead wires and capable of contacting a lead rod of a tester. A connection device for inspection of electronic equipment, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001286218A JP2003090858A (en) | 2001-09-20 | 2001-09-20 | Connection device for inspection of terminal electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001286218A JP2003090858A (en) | 2001-09-20 | 2001-09-20 | Connection device for inspection of terminal electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003090858A true JP2003090858A (en) | 2003-03-28 |
| JP2003090858A5 JP2003090858A5 (en) | 2005-01-06 |
Family
ID=19109243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001286218A Pending JP2003090858A (en) | 2001-09-20 | 2001-09-20 | Connection device for inspection of terminal electronic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003090858A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005052609A1 (en) * | 2003-11-28 | 2005-06-09 | Sumitomo Wiring Systems, Ltd. | Inspection signal supply device and inspection signal application method |
| JP2006300529A (en) * | 2005-04-15 | 2006-11-02 | Chugoku Electric Power Co Inc:The | Lead wire and method for measuring and testing apparatus |
| JP2009281959A (en) * | 2008-05-26 | 2009-12-03 | Espec Corp | Adapter for measuring device |
-
2001
- 2001-09-20 JP JP2001286218A patent/JP2003090858A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005052609A1 (en) * | 2003-11-28 | 2005-06-09 | Sumitomo Wiring Systems, Ltd. | Inspection signal supply device and inspection signal application method |
| KR100886307B1 (en) * | 2003-11-28 | 2009-03-04 | 스미토모 덴소 가부시키가이샤 | Inspection signal supply device and inspection signal application method |
| JP2006300529A (en) * | 2005-04-15 | 2006-11-02 | Chugoku Electric Power Co Inc:The | Lead wire and method for measuring and testing apparatus |
| JP4679218B2 (en) * | 2005-04-15 | 2011-04-27 | 中国電力株式会社 | Instrument measurement test lead wire and instrument measurement test method |
| JP2009281959A (en) * | 2008-05-26 | 2009-12-03 | Espec Corp | Adapter for measuring device |
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