Nippondenso Co., Ltd.

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Shigeru Tanaka

Keiichiro Banzai

Katsutaro Iwaki

Hajime Matsuhashi

Hajime Suzuki

Hidetoshi Kato

Kazumasa Mori

Hirohide Sato

Yoshio Akita

Takeshi Sada

Nobuo Mayumi

Hiroshi Shibata

Yoshifumi Umemura

Tooru Aoyama

Kouzi Tanaka

Voltage of a terminal at a high impedance is set to a fixed voltage (2.5 V) by a constant current source and a resistor, and whether the voltage of the terminal is a fixed voltage which is between 3.5 V and 5.5 V or not is detected by comparators and a NOR circuit. A control signal is sent from an ECU to the terminal to turn on a switching transistor to lower a divided voltage so that the alternator generates a high voltage only when the voltage of the terminal is the special voltage, and generates normal voltage otherwise. In case of disconnection of the communication line or grounding of the communication line, or when the battery voltage is applied to the communication line, the voltage of the terminal does not become abnormal voltage but become the normal voltage. Thus, abnormal voltage may not applied to the battery.

Voltage regulator of vehicle alternator

A battery voltage regulator for a vehicle charging system includes a voltage control circuit for controlling a battery terminal voltage and an external terminal connected to the positive terminal of a battery through the series combination of a charge lamp and an ignition switch. The regulator is at least composed of a charge lamp drive circuit responsive to a generation output of an alternator in order to energize the charge lamp, a power supply circuit responsive to the potential at the above mentioned external terminal to supply operational power to the voltage control circuit, and a malfunction-preventing circuit connected between the above mentioned external terminal and ground. The malfunction-preventing circuit prevents the power supply circuit from operating by disturbances such as leakage current flowing into the regulator through the external terminal. The regulator may further include a backup circuit responsive to the generation output of the alternator to separately supply operational power to the regulator circuit irrespective of the operation of the power supply circuit when the generation output reaches a voltage value which is higher than the above mentioned potential value at the external terminal by which the power supply circuit is energized, whereby the battery terminal voltage may be continuously maintained constant to a desired level even when a break in the charge lamp conductor has occurred.

Battery voltage regulator for vehicles

A device for supporting a heald frame in a weaving loom comprises: a bracket which is fixed on the heald frame; and a hanger which is connected to a spring for supporting the heald frame or to a wire rope and which is coupled to the bracket. The bracket or the hanger has a cylindrical supporting shaft projecting therefrom, and the corresponding hanger or bracket has an engaging hole formed therein. The bracket and the hanger are turnably engaged with each other. At least one engaging projection is formed at the periphery of the hanger or bracket, and at least one U-shaped abutting projection having an engaging space is formed at the corresponding periphery of the bracket or hanger. The engaging projection is inserted into the engaging space, and the hanger is securely held by the bracket.

Device for supporting a heald frame in a weaving loom

A generation control apparatus for a vehicle generator includes an energization circuit consisting of an energization path forming resistance element and switching means and provided between the output terminal of a rectifier circuit of the generator and the ground, and an oscillator circuit responsive to the voltage at the output terminal of the rectifier circuit to always oscillate and control the energization circuit, whereby an energization path is intermittently provided in response to the output signal of the oscillator circuit. If a generation fault condition is detected, current is caused to flow from a battery through a key switch, indicator means and the energization path forming resistor intermittently and the driver of the vehicle is alerted to the generation fault of the generator or a break in an excitation circuit by a flashing of the indicator means.

Generation control apparatus for vehicle generators

A generation control apparatus for a vehicle generator detects the output voltage of an excitation current supplying rectifier circuit of the generator. When the output voltage is lower than a predetermined value, a switching element is turned on and a current for operating an indicator lamp is caused to flow through a resistor connected to the switching element, thus detecting a break in the generator circuit.

Generation control appparatus for vehicle generators

Growing community of inventors

Kariya, Japan

Shigeru Tanaka