JPS6232371U

JPS6232371U -

Info

Publication number: JPS6232371U
Application number: JP12399885U
Authority: JP
Priority date: 1985-08-14
Filing date: 1985-08-14
Publication date: 1987-02-26

Description

[Brief explanation of the drawing]

第１図は、この考案の指針計器例えばタコメー
タの動作制御回路図、第２図は第１図のタコメー
タの外観図、第３図は従来の指針計器例えばタコ
メータの動作制御回路図、第４図は第３図のタコ
メータの外観図、第５図Ａはエンジン点火系等の
信号源からのパルス信号の波形図、第５図Ｂは第
１図、第３図におけるスイツチングトランジスタ
のコレクタ端子電圧の波形図、第５図Ｃは同じく
第１図、第２図におけるタコメータ本体の端子間
電圧の波形図、第６図は第１図、第２図における
タコメータ本体の回転数指示特性図である。図において、１はスイツチングトランジスタ、
６はタコメータ本体、７は文字盤、８は目盛、９
は指針、１０はストツパ、１１は暗電流供給回路
。尚、図中同一符号は同一、又は相当部分を示す
。 FIG. 1 is an operation control circuit diagram of a pointer instrument of this invention, such as a tachometer, FIG. 2 is an external view of the tachometer shown in FIG. 1, FIG. 3 is an operation control circuit diagram of a conventional pointer instrument, such as a tachometer, and FIG. is an external view of the tachometer in Figure 3, Figure 5A is a waveform diagram of a pulse signal from a signal source such as the engine ignition system, and Figure 5B is the collector terminal voltage of the switching transistor in Figures 1 and 3. Figure 5C is a waveform diagram of the voltage between the terminals of the tachometer body in Figures 1 and 2, and Figure 6 is a rotation speed indication characteristic diagram of the tachometer body in Figures 1 and 2. . In the figure, 1 is a switching transistor;
6 is the tachometer body, 7 is the dial, 8 is the scale, 9
is a pointer, 10 is a stopper, and 11 is a dark current supply circuit. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

a meter body 6 having a dial 7 and a pointer 9;
In a pointer meter equipped with a meter driving means 1 that inputs a signal corresponding to a physical quantity and displaces a pointer 9 of the meter body 6 according to the amount of change in the signal, a dark current is generated in the meter body 6 when the meter is operated. A dark current supply circuit 11 is connected to the meter driving means 1, and scales 8 on the dial 7 are arranged at equal intervals, and the pointer 9 is connected to the meter drive means 1 when the dark current is cut off and the meter is not in operation. A pointer instrument characterized by being provided with a contacting stopper 10.