JPH0510184U - Vehicle load control device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reliably prevent the situation where the vehicle load is operated without going through a proper operation. [Structure] An electromagnetic solenoid 1 for unlocking a lock mechanism is energized from a vehicle-mounted battery 2 via a transistor 3. The input device 8 outputs an operation signal Sv having a constant voltage level Vt for a certain period of time in response to an ON operation of an ignition key. The voltage generating circuit 4 generates two types of reference voltages V1 and V2 set to V1>Vt> V2. The window comparator 9 that receives the output from the input device 8
Indicates that the voltage level of the input signal is reference voltages V1 and V2.
Transistor 3 only when it is in the middle of (V1> V2)
Turn on. Therefore, the window comparator 9 turns on the transistor 3 to operate the electromagnetic solenoid 1 only when the operation signal Sv of the voltage level Vt is given from the input device 8 by the normal operation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle load control device that operates a vehicle load by an actuator that is energized by an on-vehicle battery.

[0002]

[Prior Art]

 For example, a steering lock device for preventing theft in a motorcycle is provided with a structure in which a lock mechanism that is a load on the vehicle is unlocked according to the power supply to an actuator composed of an electromagnetic solenoid. The power supply to the power switch is configured to be performed in response to an ON operation of the ignition key. Therefore, only the person who possesses the ignition key can unlock the lock mechanism to move or drive the motorcycle.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional configuration, the lock mechanism can be unlocked without using the ignition key by directly connecting the electric wiring of the two-wheeled vehicle and energizing the electromagnetic solenoid, so that the safety against theft is low. There was

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an effect for a vehicle that can reliably prevent a situation in which a vehicle load is operated without a regular operation. To provide a load control device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a vehicle load control device including an actuator for driving a vehicle load according to energization by an on-vehicle battery, in which a switching element is interposed in a current path of the actuator, and An input device for generating an operation signal in a predetermined state and a judgment circuit for switching the above-mentioned switching element to the ON state only when the operation signal is input are provided.

[0006]

[Action]

 When an operation signal in a predetermined state is input through the input device, the determination circuit switches the switching element to the ON state, and accordingly the actuator is energized to drive the vehicle load. Therefore, the vehicle load is activated only when a proper operation of inputting an operation signal through the input device is performed.

[0007]

【Example】

 Hereinafter, a first embodiment of the present invention will be described with reference to FIG.

In FIG. 1, an electromagnetic solenoid 1 serving as an actuator operates a lock mechanism, which is a vehicle load, provided in a steering lock device for preventing theft in a two-wheeled vehicle, for example, in an unlocked state in its energized state. Is configured to do. Such an electromagnetic solenoid 1 has one end connected to the positive power supply terminal of the vehicle-mounted battery 2 and the other end connected to the negative power supply terminal of the vehicle-mounted battery 2 via the collector / emitter of the npn transistor 3 which is a switching element. It is connected.

The voltage generation circuit 4 is configured by connecting resistors 5 to 7 in series between both terminals of the vehicle-mounted battery 2, and generates the first reference voltage V1 from the common connection point of the resistors 5 and 6. Then, the second reference voltage V2 (V1> V2) is generated from the common connection point of the resistors 6 and 7.

The input device 8 outputs an operation signal Sv having a constant voltage level Vt, which is a predetermined state, for a predetermined time when, for example, an ignition key (not shown) is turned on. In this case, the voltage level Vt of the operation signal Sv is determined to have a relationship of V1> Vt> V2 with respect to the reference voltages V1 and V2.

The window comparator 9, which is a determination circuit, is configured by combining operational amplifiers 10 and 11 and an AND circuit 12. Specifically, the operational amplifier 10 receives the first reference voltage V1 from the voltage generating circuit 4 at its non-inverting input terminal (+) and the output signal from the input device 8 at its inverting input terminal (-). Are connected as. The operational amplifier 11 is connected so that its inverting input terminal (-) receives the second reference voltage V2 from the voltage generating circuit 4 and its non-inverting input terminal (+) receives the output signal from the input device 8. Has been done. The AND circuit 12 has a pair of input terminals for receiving the outputs of the operational amplifiers 10 and 11, and the output terminal of the AND circuit 12 is connected to the base of the transistor 3.

Therefore, in the window comparator 9 thus configured, when the voltage level of the signal supplied from the input device 8 is in the middle of the reference voltages V1 and V2 from the voltage generating circuit 4, Only the both operational amplifiers 10 and 11 output high level signals. In this state, the AND circuit 12 outputs a high level signal and the transistor 3 is turned on.

Next, the operation of the above configuration will be described. That is, in the steady state, the AND circuit 12 in the window comparator 9 outputs a low level signal to turn off the transistor 3, so that the electromagnetic solenoid 1 is not energized. From this state, when an ignition key (not shown) is turned on, an operation signal Sv having a constant voltage level Vt is output from the input device 8 for a fixed time and given to the window comparator 9. In this case, the voltage level Vt of the operation signal Sv is determined so that the first reference voltage V1 and the second reference voltage V2 from the voltage generating circuit 4 have a relationship of V1> Vt> V2. Therefore, the high level signal is output from the AND circuit 12 in the window comparator 9 for a fixed time, and the transistor 3 is turned on during this period. Then, the electromagnetic solenoid 1 is energized from the on-vehicle battery 2 through the transistor 3, whereby the lock mechanism provided in the anti-theft steering ring lock device of the motorcycle is operated and unlocked. The action is taken.

In short, according to the configuration of the present embodiment described above, in the unlocking operation of the lock mechanism, the operation signal Sv of the constant voltage level Vt is output from the input device 8 by turning on the ignition key. This is the first time that the operation is performed. Therefore, it is impossible to directly connect the electric wiring to energize the electromagnetic solenoid 1 as in the conventional case, and thereby the safety against theft can be improved.

FIG. 2 shows a second embodiment of the present invention. Hereinafter, only parts different from the first embodiment will be described.

That is, in FIG. 2, the DC motor 13, which is an actuator, operates in its energized state, for example, by operating a lock mechanism that is a vehicle load provided in a steering lock device for theft prevention in a two-wheeled vehicle to unlock the vehicle. Is configured to do. One end of the motor 13 is connected to the positive power supply terminal of the vehicle-mounted battery 2, and the other end is connected to the negative power supply terminal of the vehicle-mounted battery 2 via the collector and the emitter of the transistor 3.

The input device 14 outputs, for example, a pulse signal Pv having a predetermined cycle T, which is a predetermined state, for a predetermined time when an ignition key (not shown) is turned on. The pulse signal Pv is provided to the charge / discharge circuit 15 which is a determination circuit via the capacitor 16 for cutting the DC component.

The charging / discharging circuit 15 is configured by connecting a capacitor 17, a resistor 18, and diodes 19 and 20 between the capacitor 16 and each of the base and the emitter of the transistor 3 as shown in the figure. The terminal voltage Vc of the capacitor 17 rises to a voltage sufficient to turn on the transistor 3 only when the cycle of the input pulse signal Pv is equal to or more than the predetermined cycle T.

Therefore, also in the present embodiment configured as described above, the unlocking operation of the lock mechanism is a normal operation of turning on the ignition key to output the pulse signal Pv of the constant cycle T from the input device 14. This is performed for the first time when the above procedure is performed, and thus, the same effect as that of the first embodiment can be obtained.

In the second embodiment, the transistor 3 is turned on when the period of the pulse signal Pv is equal to or longer than the constant period T, but the first embodiment is provided in the subsequent stage of the charge / discharge circuit 15. If a circuit similar to the window comparator 9 in FIG. 2 is arranged, the transistor 3 can be turned on only when the cycle of the pulse signal Pv is the constant cycle T.

FIG. 3 shows a third embodiment of the present invention, and only the parts different from the first embodiment will be described below.

That is, in FIG. 3, the ignition device 21, which is an actuator, has one end connected to the positive power supply terminal of the vehicle-mounted battery 2 through the collector and emitter of the pnp-type transistor 3 ′, which is a switching element, and the other end. Is connected to the negative power supply terminal of the vehicle-mounted battery 2.

The input device 22 outputs a pulse code signal Cp including a pulse train in a predetermined state when, for example, an ignition key (not shown) is turned on. The shift register 23 which receives this pulse code signal Cp converts the pulse code signal Cp into a parallel signal in synchronization with the clock pulse Pc and gives it to the digital comparator 24 which is a judgment circuit.

The digital comparator 24 compares the reference code signal Cs preset by the code setting circuit 25 composed of a plurality of switches with the pulse code signal Cp from the shift register 23, and only when both match. Turn on transistor 3 '.

Therefore, according to the present embodiment configured as described above, the energization of the ignition device 21 is performed by a normal operation of turning on the ignition key to output the pulse code signal Cp from the input device 22. This is the first time that it is performed, so that the same effect as that of the first embodiment can be obtained.

[0026]

[Effect of the device]

 According to the present invention, as is apparent from the above description, in a vehicle load control device including an actuator that operates a vehicle load when energized by an on-vehicle battery, a switching element is provided in a current path of the actuator. In addition, an input device that generates an operation signal in a predetermined state and a determination circuit that switches the switching element to the ON state only when the operation signal is input are provided. This has an excellent effect that it is possible to surely prevent a situation in which the operation is performed without performing the operation.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing a first embodiment of the present invention.

FIG. 2 is an electric circuit diagram showing a second embodiment of the present invention.

FIG. 3 is an electric circuit diagram showing a third embodiment of the present invention.

[Explanation of symbols]

In the figure, 1 is an electromagnetic solenoid (actuator), 2 is a vehicle battery, 3 and 3'are transistors (switching elements), 4 is a voltage generation circuit, 8 is an input device, 9 is a window comparator (decision circuit), and 13 is direct current. A motor (actuator), 14 is an input device, 15 is a charge / discharge circuit (judgment circuit), 21 is an ignition device (actuator), 22 is an input device, 23 is a shift register, and 24 is a digital comparator (judgment circuit).

Claims (1)

Claims for utility model registration: Claim 1, wherein in a vehicle equipped with an actuator for operating a vehicle load when energized from an on-vehicle battery, a switching element interposed in a current path of the actuator and a predetermined A load control device for a vehicle, comprising: an input device that generates an operation signal in a closed state; and a determination circuit that switches the switching element to an ON state only when the operation signal is input.