JPH09308099A - Power supply for car audio appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-operate and low-cost power supply for a car audio appliance. SOLUTION: A power supply connector 11 to which the first and the second connectors are selectively connected, a separate connector 14 and a short plug 17 to be connected to the connector 14 are provided. When the first connector is connected to the power supply connector 11 and when the short plug 17 is connected to the connector 14 in the first state, the first and the second voltages supplied at the first contact 4 and the second contact 7 of the power supply connector 11 are supplied to the first and the second power supply systems through the short plug 17. When the second connector is connected to the power supply connector 11 and when the short plug 17 is connected to the connector 14 in the second state, the second and the first voltages supplied at the first contact 4 and the second contact 7 of the power supply connector 11 are supplied to the second and the first power supply systems through the short plug 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for vehicle audio equipment.

[0002]

2. Description of the Related Art An audio device mounted on an automobile to reproduce a CD or receive a broadcast, that is, a so-called car audio device has different specifications depending on the country, but a car audio device used in Europe is The connection portion with the electric system of the automobile is configured as shown in FIGS.

That is, FIG. 4 shows a car audio device 10.
FIG. 6 is a rear view of an example, in which an opening 10A is formed on the rear surface of the car audio device 10, and connectors (connector jacks) 11 to 14 are provided facing the opening 10A as shown in FIG. It is provided.

In this case, the connectors 11 to 14 are standardized by ISO, the connector 11 is for power supply,
The connector 12 is for a speaker, the connector 13 is for an accessory, and the connector 14 is for a fuse. And
These connectors 11-14 have their housing 15
Are integrally formed of a plastic material. Further, the power supply connector 11 and the speaker connector 12
Have eight connection pins (connection contacts) 1 to 8, respectively.

The standard of the accessory connector 13 is open to the makers of automobiles and car audio devices, and can be used, for example, based on the specifications independently set by the automobile manufacturer. Therefore, the accessory connector 13 can be used only in a car audio device dedicated to a specific car model, that is, a so-called genuine model, and cannot be used in a general-purpose car audio device that does not limit the manufacturer or car model of the car.

Further, a fuse 16 of a plug type is inserted into the fuse connector 14.

Then, as shown in FIG. 6C, pin 4 of the power supply connector 11 is connected to the main power supply system, and pin 7
Is connected to an auxiliary power supply system, and pin 8 is grounded. In this case, the main power supply system is a power supply system in which the power is turned on and off by operating the engine key, and the auxiliary power supply system is a circuit that requires power supply even if the engine key is turned off, such as broadcasting. It is a power supply system such as a memory for storing data of the reception frequency of the station.

On the other hand, the electric system of the automobile is constructed as shown in FIG. 6A or 6B. That is, in FIG. 6A (and FIG. 6B), reference numeral 21 is a car battery, reference numeral 22 is a switch that is turned on / off in conjunction with an engine key, and reference numeral 23 is a connector (connector plug). And although the connector 23 has various shapes,
Here, for simplicity, it is assumed that it corresponds to the connector 11. Therefore, the connector 23 is
Pins (connection contacts) 1 connected to pins 1 to 8 of
Having ~ 8.

Then, in a certain vehicle type A, as shown in FIG. 6A, the + pole of the car battery 21 is switched to the switch 22.
Is connected to the first electrical component system ACC and is also connected to the pin 4 of the connector 23. The + pole of the battery 21 is directly connected to the second electrical system ACC and also to the pin 7 of the connector 23. Further, the negative pole of the battery 21 is connected to the vehicle chassis and the pin 8 of the connector 23.

However, in another vehicle type B, FIG.
As shown in, the + pole of the car battery 21 is connected to the switch 2
It is connected to the electrical system ACC through 2 and is also connected to the pin 7 of the connector 23. Further, the + pole of the battery 21 is directly connected to the electrical system ACC and also to the pin 4 of the connector 23.

That is, in vehicle type A and vehicle type B, battery 21, switch 22 and pin 4 of connector 23 are used.
And the connection relationship with the pin 7 is reversed.

Therefore, in the car type A, when the car audio device 10 is used, if the connector 23 is inserted into the connector 11, the pins 4, 7, 8 of the connector 23 are inserted.
Of the output voltage of the battery 21, the voltage passing through the switch 22 is supplied to the main power supply system of the car audio device 10, and the voltage not passing through the switch 22. Are supplied to an auxiliary power supply system such as a memory of the car audio device 10.

However, in the car type B, when the car audio device 10 is used, the connector 23 is replaced by the connector 1
When it is plugged in 1, the output voltage of the battery 21 that does not pass through the switch 22 is supplied to the main power supply system of the car audio device 10, and the voltage passing through the switch 22 is an auxiliary power supply such as a memory of the car audio device 10. Will be supplied to the system. That is, the battery 21
Among the output voltages of the above, the voltage passing through the switch 22 and the voltage not passing through the switch 22 are supplied to the main power supply system and the auxiliary power supply system in reverse.

In order to solve such a problem, a switch is provided in the car audio apparatus 10, and the switch is used to determine the connection relationship between the pins 4 and 7 of the connector 11 and the main power supply system and the auxiliary power supply system. It may be replaced according to A or vehicle type B.

However, since a considerable amount of current flows in the power supply system of the car audio device 10, a switch having a current capacity of, for example, 12 A is required as a switch for performing the above switching. Also, the car audio device 1
It is also necessary to have a structure such that when the 0 is attached to an automobile, it cannot be easily switched even if the switch is touched by mistake. Therefore, the switch becomes large and the cost increases.

Therefore, as shown in FIG. 6D, a connecting cord 4 with a cast is prepared. That is, the cord 4 has a connector (connector jack) 41 corresponding to the connector 23 connected to one end and a connector (connector plug) 4 corresponding to the connector 11 at the other end.
2 is connected.

Further, of the cords connecting the connector 41 and the connector 42, the cords connected to the pins 4 and 7 are divided, and at the divided ends thereof, two sets of socket terminals 43A, 44A and 43B, 44B is connected.

Therefore, when the car audio device 10 is used in the vehicle type A, the connector 23 is inserted into the connector 41, the connector 42 is inserted into the connector 11, and the bullet terminal 43A and the bullet terminal 44A are connected. By connecting 43B and the socket terminal 44B to each other, among the output voltages of the battery 21, the voltage passing through the switch 22 is supplied to the main power supply system of the car audio device 10, and the voltage not passing through the switch 22 is supplied to the car. It is supplied to an auxiliary power supply system such as a memory of the audio device 10.

When the car audio device 10 is used in the vehicle type B, the cord 4 is connected in the same manner and the bullet terminal 43A and the bullet terminal 44B are connected. The bullet terminal 43B and the bullet terminal 44A are connected. With this connection, among the output voltages of the battery 21, the voltage that passes through the switch 22 is supplied to the main power supply system of the car audio device 10, and the voltage that does not pass through the switch 22 is auxiliary to the memory of the car audio device 10. Power supply system.

That is, by preparing the connecting cord 4, the car audio device 10 can be used in the car type A as well.
It can also be used in vehicle type B.

[0021]

As described above, if the connecting cord 4 is used, the car audio device 10 can be mounted on both the vehicle type A and the vehicle type B.

However, when the connecting cord 4 is used, the connecting cord 4 is routed around the narrow dashboard and also at the rear part of the car audio device 10. Therefore, the connecting cord 4 itself is a hindrance. turn into.

The connecting cord 4 includes a connector 41,
Since it has 42 and bullet terminals 43A-44B, it is expensive and the connecting cord 4 is merely a relay cord. Therefore, for the car audio device 10 that already has the ISO connector 11, the connection cord 4 causes an increase in cost.

The present invention is intended to solve such a problem.

[0025]

Therefore, in the present invention, of the voltages from the car battery, the voltage passing through the switch linked to the engine key is the first voltage, and the voltage not passing through the switch is the second voltage. The first voltage and the second voltage are respectively output from the first contact and the second contact, respectively, and the first voltage and the second voltage. To the second connector which is respectively output from the second contact and the first contact, the power connector to which the second connector is selectively connected, another connector, and the other connector. When the first connector is connected to the power supply connector and the shorting plug is connected to the other connector in the first state, the short circuit plug is connected to the power supply connector. The first contact And the first voltage and the second voltage supplied to the second contact are supplied to the first power supply system and the second power supply system through the shorting plug, and the second connector is connected to the power supply. The second connector, which is supplied to the first contact and the second contact of the power connector when the shorting plug is connected to the other connector in the second state when connected to the power connector. The voltage and the first voltage are supplied to the second power supply system and the first power supply system through the shorting plug as a power supply device for an in-vehicle audio device.

As a result, the car audio device can support two types of vehicles only by replacing the short plug.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIG.
2, 14 are configured as described in FIG. 5 according to the ISO standard.

However, in the ISO standard, the specification of the accessory connector 13 is open to the manufacturer, so in the present invention, the accessory connector 13 is used.
Has the following configuration, for example.

That is, the accessory connector 13 is provided with six pins (jack contacts) 1 to 6, for example, 3 pieces × 2 sets. Then, for example, as shown in FIG. 2, auxiliary printed circuit boards 31 are provided on the rear surfaces of the connectors 11 to 14, and the rear ends of the pins of the connectors 11 to 14 are soldered to the printed circuit boards 31. Are connected to the main printed circuit board 32 through L-shaped connection pins (not shown).

As shown in FIG. 3, for example, in the car audio device 10, the pin 4 of the power connector 11 is connected to the pins 1 and 6 of the accessory connector 14, and the pin 7 of the power connector 11 is the accessory. Is connected to pins 2 and 5 of the power connector 14, and pin 8 of the power connector 11 is grounded. Also, the accessory connector 14
3 is connected to the main power supply system, and pin 4 is connected to the auxiliary power supply system.

Further, as shown in FIGS. 1 and 2, a shorting plug 17 corresponding to pins 1 to 6 of the accessory connector 14 is provided. This short plug 17
Is configured such that the short pins 17A and 17B are formed in a U shape by a plate material of brass, for example, and the base portion is molded by a plastic material 17C.

In such a structure, when the car audio device 10 is mounted on a car of car type A, the short plug 17 is attached to the accessory connector 14.
As shown in FIG. 3, the short pin 17A connects the pins 1 and 3, and the short pin 17B connects the pins 2 and 4.
Insert to connect and. Then, the connector 23 of the vehicle type A is inserted into the power connector 11.

In this way, among the voltages from the battery 21, the voltage passing through the switch 22 is the pin 4 of the connector 23 → the pin 4 of the connector 11 → the pin 1 of the connector 14.
→ short pin 17A → supplied to the main power supply system through the voltage line of pin 3 of the connector 14.

Among the voltages from the battery 21, the voltage that does not pass through the switch 22 is the pin 7 of the connector 23.
The voltage is supplied to the auxiliary power system through the voltage line of pin 7 of connector 11 → pin 2 of connector 14 → short pin 17B → pin 4 of connector 14.

That is, in the vehicle of the vehicle type A, the voltage that passes through the switch 22 and the voltage that does not pass among the voltages from the battery 21 are correctly supplied to the respective power supply systems of the car audio device 10.

On the other hand, when the car audio device 10 is mounted on a car of the car type B, the shorting plug 17 is attached to the accessory connector 14 in a manner opposite to that shown in FIG. Are connected, and the short pin 17B is inserted so that the pins 4 and 6 are connected. Then, the connector 23 of the vehicle type B is replaced with the power connector 1
Insert into 1.

In this way, among the voltages from the battery 21, the voltage passing through the switch 22 is as follows: pin 7 of the connector 23 → pin 7 of the connector 11 → pin 5 of the connector 14.
→ short pin 17A → supplied to the main power supply system through the voltage line of pin 3 of the connector 14.

Of the voltage from the battery 21, the voltage that does not pass through the switch 22 is the pin 4 of the connector 23.
The voltage is supplied to the auxiliary power system through the voltage line of pin 4 of connector 11 → pin 6 of connector 14 → short pin 17B → pin 4 of connector 14.

That is, also in the car of the car type B, the voltage that passes through the switch 22 and the voltage that does not pass out of the voltage from the battery 21 are correctly supplied to each power supply system of the car audio device 10.

In this way, according to this power supply device, the accessory connector 14 and the shorting plug 17 allow
A switch with two contact points in the circuit is configured, and a short plug 1 is provided for both vehicle type A and vehicle type B.
The same car audio device 10 by replacing 7
Can be installed.

Moreover, in that case, since the connector 23 can be directly connected to the power supply connector 11 and the connecting cord 4 is not required at all, the general-purpose car audio device 10 is a genuine model even in a narrow dashboard. It can be attached as well. Further, since the expensive connecting cord 4 is unnecessary, the cost can be reduced.

In the above description, the short plug 17
The fuse 16 can be omitted by using the base portion (center portion) of the short pin 17B as a fuse.

[0043]

According to the present invention, the same car audio device can be mounted on both the first and second vehicle types by simply replacing the short plug.

In addition, in this case, the cord connector from the car battery can be directly connected to the power connector, and no cord for connection is required. Therefore, even in a narrow dashboard, a general-purpose car audio device can be used as a genuine product. It can be installed in the same way as the model. Also,
Costs are reduced because expensive connecting cords are not required.

[Brief description of drawings]

FIG. 1 is a rear view showing an embodiment of the present invention.

FIG. 2 is a rear perspective view showing one embodiment of the present invention.

FIG. 3 is a connection diagram showing one form of an electrical equipment system of the present invention.

FIG. 4 is a rear view showing one form of a car audio device.

FIG. 5 is a diagram for explaining a connector.

FIG. 6 is a connection diagram for explaining a connection method of an electrical system.

[Explanation of symbols]

10 = car audio device, 11 = power connector, 1
2 = speaker connector, 13 = accessory connector, 14 = fuse connector, 15 = housing, 1
6 = Fuse, 17 = Short plug, 17A and 1
7B = short pin, 21 = car battery, 22 = switch, 23 = connector

Claims (3)

[Claims] 1. A first voltage is a voltage passing through a switch linked to an engine key among the voltages from a car battery,
When the voltage that does not pass through the switch is the second voltage, the first voltage and the second voltage are output from the first contact and the second contact, respectively, and a first connector,
A second power connector to which the first voltage and the second voltage are respectively output from the second contact and the first contact is separately connected to a power connector, Connector and a shorting plug connected to the other connector, and when the first connector is connected to the power connector, the shorting plug is connected to the other connector in a first state. At this time, the first voltage and the second voltage supplied to the first contact and the second contact of the power connector are passed through the shorting plug to the first power supply system and the second power supply. When the second connector is supplied to the system and the shorting plug is connected to the other connector in the second state when the second connector is connected to the power connector, the first contact and the first contact of the power connector are connected. Yo And the second voltage and the first voltage supplied to the second contact are supplied to the second power supply system and the first power supply system through the shorting plug. Equipment power supply. 2. The power supply device for an on-vehicle audio device according to claim 1, wherein the separate connector and the shorting plug are two circuits 2.
A power supply unit for an in-vehicle audio device that is configured as a contact switch. 3. The power supply device for an on-vehicle audio device according to claim 2, wherein the another connector has 3 × 2 sets of contacts, and the shorting plug has each set of the another connector. To the other connector, the combination of the contacts to be connected by the short contact is changed, and the second connector is connected to the other connector to the first state. A power supply device for an in-vehicle audio device, which realizes when and when connected to state 2.