JPH0558508U - Auxiliary power supply for vehicle electrical components - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The purpose of the present invention is to turn off the ignition key.
There is a need for an auxiliary power supply device for vehicle electrical equipment that enables operation of vehicle electrical equipment even in the state of. [Arrangement] An ignition wiring IG for driving a vehicle constant power source and vehicle electrical equipment and / or a relay R for connecting between accessory wirings Acc is provided, and this relay R is driven by a relay driving means operated by a switch SW, An auxiliary power supply device for vehicle electrical equipment, wherein the vehicle electrical equipment can be driven in the absence of the ignition key 1. The auxiliary power supply device for vehicle electrical equipment has means for locking the relay driving means in the inoperative state when the voltage of the constant power supply is lower than a predetermined value.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary power supply device for vehicle electrical equipment, and more particularly to an auxiliary power supply device for vehicle electrical equipment that is used with the ignition key turned off.

[0002]

[Prior Art]

 Various vehicle electrical components are known, such as power windows, wipers, electric door mirrors, and electric sunroofs. These are connected to vehicle accessories and ignition electric system, and can be driven and used by inserting the ignition key and turning it to turn it on.

[0003]

[Problems to be solved by the device]

 As described above, vehicle accessories and electrical components connected to the ignition electric system cannot operate when the ignition key is OFF. Therefore, for example, in a vehicle model equipped with a power window, the power window cannot be opened / closed when the ignition key is in the OFF state. As measures against this, currently timer type (power is supplied to the power window for an arbitrary time after the ignition key is removed) or door switch interlocking type (power window only when the door is opened once after the ignition key is removed) Power is supplied to the power window), but in the door switch interlocking type, the power window no longer operates after a predetermined time has passed after the door is closed.

Further, not only power windows but also electric door mirrors, electric sunroofs, and the like do not operate when the ignition key is OFF.

Furthermore, if the ignition key is removed while the wiper switch is on, the wiper may stop in the middle of the vehicle. Even in such a case, after inserting the ignition key again and turning the power on. You have to turn off the wiper switch. It is also necessary to use the ignition key to remove the cassette tape or CD.

The object of the present invention is to eliminate the above drawbacks.

[0007]

[Means for Solving the Problems]

 The auxiliary power supply device for vehicle electrical equipment of the present invention comprises a relay connected to the vehicle's constant power source, a drive means for this relay operated by opening and closing a switch, an ignition wiring for driving the constant power source and electrical equipment, and Alternatively, it is composed of the contacts of the relay connected between the accessory wirings, and by operating the switch, the constant power can be supplied to the ignition wiring and / or the accessory wiring regardless of the operation of the ignition key. Characterize. Further, the auxiliary power supply device for vehicle electrical equipment of the present invention has means for detecting an abnormality of the constant power supply, and when the detection means detects an abnormality, the relay drive means is locked in the inoperative state. And

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIGS. 1 and 2, the wiring + B from the positive electrode of the battery (constant power supply) B extending from the key cylinder 2 into which the ignition key 1 is inserted, the ignition wiring IG, and / or the accessory wiring An auxiliary power unit main body 7 having wirings 3 to 6 respectively connected to Acc and ground E is provided, and this auxiliary power unit main body 7 is inserted between the battery wiring + B and the ground E via the wirings 3 and 6, respectively. A series circuit including a relay R and a transistor T, a switch SW that can be operated from the outside of the main body 7 of the auxiliary power supply device, a relay drive circuit 8 that is turned on and off by the switch SW, and a relay drive circuit A timer circuit (not shown) for automatically deactivating 8 after a certain time after its operation, and the wiring 3, 4 through the first normally open contact point R ₁ of the relay R, the second normally open contact point R ₂ of the relay R connected between the wirings 3 and 5, and the wirings 4 and 5. A lock circuit that is connected to the ignition wiring IG and the accessory wiring Acc, respectively, detects whether or not they are connected to the battery wiring + B, and when they are connected, locks the relay drive circuit 8 in the inoperative state. 9 and the battery wiring + B via the wiring 3 to check whether or not the battery voltage is lower than a predetermined value, and if it is lower, the battery for locking the relay drive circuit 8 in the non-operational state as well. A check circuit 10 and an indicator 11 for making the state of the auxiliary power supply device visible from the outside are provided.

Since the auxiliary power supply device for vehicle electrical equipment of the present invention has the above-mentioned configuration, the vehicle electrical equipment such as the power window, wiper, electric door mirror, and electric sunroof is completely installed without the ignition key 1. If it is found that the state has not been restored to the state, the transistor T 1 is turned on via the relay drive circuit 8 by closing the switch SW, and the current flows from the battery wiring + B to the relay R 1, so that the first and the first 2 The normally open contact points R ₁ and R ₂ are closed, which allows the electric components for the vehicle to be restored by applying a current.

In this case, even if the switch SW is closed in an abnormal condition such as a low battery voltage, the relay drive circuit 8 remains inactive due to the operation of the battery check circuit 10, so that further wear of the battery B is caused. Can be prevented and the battery B can be protected.

Further, when the battery wiring + B is already connected to the ignition wiring IG and / or the accessory wiring Acc, the relay drive circuit 8 is locked by the operation of the lock circuit 9 while the relay drive circuit 8 is not operated. To be done. The auxiliary power supply device of the present proposal can be directly incorporated into an after-idling device for idling after running a turbocharged engine vehicle or a starter device that can start the engine without inserting a key.

[0013]

[Effect of the device]

 As described above, according to the auxiliary power supply device for vehicle electrical equipment of the present invention, the vehicle electrical equipment such as the power window, wiper, electric door mirror, and electric sunroof can be operated by closing the switch SW even when the ignition key is OFF. There is a great benefit to be able to repair the forgetting to close the power window and forgetting to switch off the wiper.

[Brief description of drawings]

FIG. 1 is a perspective view of an auxiliary power supply device for a vehicle electrical component according to the present invention.

FIG. 2 is a circuit diagram of an auxiliary power supply device for a vehicle electrical component according to the present invention.

[Explanation of symbols] 1 Ignition key 2 Key cylinder 3 Wiring 4 Wiring 5 Wiring 6 Wiring 7 Auxiliary power supply unit 8 Relay drive circuit 9 Lock circuit 10 Battery check circuit 11 Indicator B Battery E Ground R Relay R ₁ 1st normally open contact R ₂ 2nd normally open contact SW switch IG Ignition wiring Acc Accessory wiring

Claims (2)

[Scope of utility model registration request] 1. A relay connected to a constant power source of a vehicle, a driving means of this relay operated by opening and closing a switch, and a relay connected between the constant power source and an ignition wiring for driving an electric component and / or an accessory wiring. And an auxiliary power supply device for vehicle electrical equipment, characterized in that the constant power can be supplied to the ignition wiring and / or accessory wiring by operating the switch regardless of ignition key operation. . 2. The apparatus according to claim 1, further comprising means for detecting an abnormality of the constant power supply, wherein the relay driving means is locked in an inoperative state when the detection means detects an abnormality.