JPS61187745U - - Google Patents

Info

Publication number
JPS61187745U
JPS61187745U JP7218785U JP7218785U JPS61187745U JP S61187745 U JPS61187745 U JP S61187745U JP 7218785 U JP7218785 U JP 7218785U JP 7218785 U JP7218785 U JP 7218785U JP S61187745 U JPS61187745 U JP S61187745U
Authority
JP
Japan
Prior art keywords
drive circuit
indicator lamp
oil level
brake
detection means
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.)
Granted
Application number
JP7218785U
Other languages
Japanese (ja)
Other versions
JPH0650273Y2 (en
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 filed Critical
Priority to JP7218785U priority Critical patent/JPH0650273Y2/en
Publication of JPS61187745U publication Critical patent/JPS61187745U/ja
Application granted granted Critical
Publication of JPH0650273Y2 publication Critical patent/JPH0650273Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Valves And Accessory Devices For Braking Systems (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係る実施例を示す回路図、第
２図は第１図回路の入力抵抗に対する故障ランプ
の点灯特性を示す図、第３図は従来のランプ駆動
回路を示す回路図である。 １…ブレーキオイル検出部、２…故障表示ラン
プ、３…駆動回路、４…ワイヤーハーネス、ＴＲ
１乃至ＴＲ４…トランジスタ。 Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a diagram showing the lighting characteristics of a faulty lamp with respect to the input resistance of the circuit shown in Fig. 1, and Fig. 3 is a circuit diagram showing a conventional lamp drive circuit. be. 1... Brake oil detection section, 2... Failure indicator lamp, 3... Drive circuit, 4... Wire harness, TR
1 to TR 4 ...transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ブレーキオイルのレベルを検出するオイルレベ
ル検出手段と、ブレーキの故障状態を表示する表
示ランプと、前記表示ランプを駆動する駆動回路
と、前記オイルレベル検出手段と駆動回路とを結
線するワイヤーハーネスとを備え、前記駆動回路
は前記オイルレベル検出手段によるオイルレベル
の所定値以下の低下およびワイヤーハーネスの断
線や接触不良による電圧降下を検出する手段を有
し、該検出により前記表示ランプを点灯すること
を特徴とするブレーキ故障用表示ランプ駆動回路
。 An oil level detection means for detecting the level of brake oil, an indicator lamp for indicating a failure state of the brake, a drive circuit for driving the indicator lamp, and a wire harness for connecting the oil level detection means and the drive circuit. The drive circuit includes means for detecting a drop in the oil level below a predetermined value by the oil level detection means and a voltage drop due to wire harness disconnection or poor contact, and the drive circuit is configured to turn on the indicator lamp based on the detection. Features a brake failure indicator lamp drive circuit.
JP7218785U 1985-05-17 1985-05-17 Brake oil level alarm indicator lamp drive circuit Expired - Lifetime JPH0650273Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7218785U JPH0650273Y2 (en) 1985-05-17 1985-05-17 Brake oil level alarm indicator lamp drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7218785U JPH0650273Y2 (en) 1985-05-17 1985-05-17 Brake oil level alarm indicator lamp drive circuit

Publications (2)

Publication Number Publication Date
JPS61187745U true JPS61187745U (en) 1986-11-22
JPH0650273Y2 JPH0650273Y2 (en) 1994-12-21

Family

ID=30610369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7218785U Expired - Lifetime JPH0650273Y2 (en) 1985-05-17 1985-05-17 Brake oil level alarm indicator lamp drive circuit

Country Status (1)

Country Link
JP (1) JPH0650273Y2 (en)

Also Published As

Publication number Publication date
JPH0650273Y2 (en) 1994-12-21

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