JPH055088Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to wiring within a joint block that connects signals between wire harnesses of a moving vehicle, particularly an automobile.

[Conventional technology]

FIG. 6 is a schematic diagram of a conventional door opening/closing switch type wiring configuration.

1 is a joint block, ₂₁ to _2o are units such as a seat belt/key alarm unit, a power window unit, a lamp auto-cut unit, an anti-theft unit, 6 is a door ajar indicator, 11 is a fuse, and 13 is a door. It is an on/off switch. In the conventional wiring in an automobile, a fuse 11 is provided on a joint block 1, and main switch signals are branched and connected within the joint block 1. Further, for example, signals for opening and closing the door opening/closing switch 13 are used in the circuits of the seat belt/key column unit, power window unit, lamp auto cut unit, and antitheft units 2 ₁ to 2 _o . Since the door opening/closing switch 13 is normally connected to the earth when opened and released when closed, each of the circuits in each unit 2 ₁ to 2 _o uses a resistor that pulls up to the + side of the battery.

FIG. 8 is a schematic diagram of an example of a conventional ignition switch type wiring configuration. The same reference numerals as in FIG. 6 indicate the same parts. 5 is an ignition switch. The circuit function is the same as in FIG.

[Problem that the invention attempts to solve]

Conventional automotive wiring has a joint block fuse, and switch signals are branched and connected within the joint block.The circuits in each unit are in an open state when the switch is closed, so the positive side of the battery is The following problems arise due to the structure in which a pull-up resistor is inserted.

As for vehicles, the price increases because pull-up resistors are provided in duplicate for each unit. Also, since the resistors of each unit are connected in parallel, the current increases and the pull-up resistance value decreases. Also, the execution pull-up value varies depending on the presence or absence of other units.

Also, since each circuit in each unit pulls up to the + side of a battery, it may be connected to the + side of a different battery. At this time, in order to perform pull-up wiring to the circuits of each unit 2i and 2j as shown in Fig. 7a, a method is used to unify the + side of the battery as shown in Fig. 7c, but this The number of wire circuits to be connected increases, which increases the price. In addition, in order to prevent the battery from running around, diodes 7 ₁ and 7 ₂ are inserted in the circuits of each unit 2i and 2j as shown in FIG. Since it is necessary, it is not desirable in terms of price.

[Means for solving problems]

In order to solve the conventional problems, this invention has a joint block equipped with both a power supply fuse and a switch that generates a switch signal, and is connected to the positive side of the battery between the fuse terminal and the switch terminal or via the switch. It is characterized by a wiring configuration in which a pull-up resistor is built-in or directly connected between the ground terminal and the ground terminal.

[Effect]

This invention eliminates the need to provide a pull-up resistor for each unit by incorporating or directly connecting the pull-up resistor to the joint block.
Wiring to unify the pull-up resistor to the + side of the battery and a diode to prevent looping are also unnecessary.
Examples will be described below with reference to the drawings.

〔Example〕

Figure 1 shows an overview of the door opening/closing switch type wiring configuration of the present invention. A pull-up resistor 12 is inserted between a terminal of a fuse 11 and a terminal of a door opening/closing switch 13 within a joint block 1. 2 ₁
2o to _2o are the same units as in FIG.

FIG. 2 shows an example of the insertion wiring of the pull-up resistor 12 in the joint block 1 of the present invention.
A bus bar 21 connecting the door opening/closing switch terminal 23 in the joint block 1 and the fuse 11 is
This is a configuration in which a pull-up resistor input connector 22 is directly connected.

FIG. 3 shows another embodiment of the insertion wiring of the pull-up resistor 12 in the joint block 1 of the present invention. Holes 31 1 and 31 2 are provided in the bus bar 21 that connects the door open/close switch terminal in the joint block ₁ and the fuse at the positions where the pull-up resistors 32 are inserted, and both ends of the resistors ₃₂ are press-fitted into the holes 31 ₁ and 31 ₂ . The configuration is such that the cable is inserted and wired.

FIG. 4 shows the wiring connecting the door opening/closing switch terminal and the fuse in the joint block 1 of the present invention on a printed circuit board 4 on which a wiring pattern 42 is formed.
In the embodiment according to No. 1, a resistor 43 is inserted and wired at the insertion position of the pull-up resistor 43 of the wiring pattern 42.

FIG. 5 is a schematic diagram of an embodiment of the ignition switch type wiring structure of the present invention. This is an example in which a pull-down resistor 12 is inserted between one terminal of the ignition switch 5 and a terminal connected to the earth via a fuse 11 in the joint block 1. In the figure, ₂₁ to _2o are the respective functional units.

As shown in each embodiment of the present invention, a pull-up resistor is built-in or directly connected inside the junction block as an automotive wiring device, eliminating the need to pull up the switches of the relevant system individually. Pull-ups can be commonly performed in the session block.

[Effect of idea]

As explained above, the present invention is capable of individually pulling up switches for each system for each functional unit in an automobile by incorporating or directly connecting a pull-up resistor to the junction block, which serves as an automobile wiring device. Since the pull-up can be performed in a common joint block all at once, the wiring open/close switch can function as a switch signal with defined levels of high/low (High/Low), and each functional unit can be Lower price, smaller dimensions, no need for pull-up wiring for each unit when connecting to the + side of different batteries, no need for diodes to prevent current circulation, and resistance value due to a common resistor inserted in the joint block. This has a large effect because it maintains a constant value, reduces current consumption, and ensures stable operation of each unit without being affected by the presence or absence of other units.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the wiring configuration of the door open/close switch type of the present invention, Figures 2 to 4 are examples of the wiring configuration in the joint block of the present invention, and Figure 5 is the ignition switch type of the present invention. Figure 6 is a schematic diagram of the wiring configuration for a conventional door opening/closing switch. Figures 7a to c are explanatory diagrams for preventing the wiring configuration for a conventional door opening/closing switch. Figure 8 is a diagram for explaining the wiring configuration for a conventional door opening/closing switch. FIG. 2 is a schematic diagram of a switch type wiring configuration. 1...Joint block, 11...Fuse, 12...Resistor, 13...Door opening/closing switch,
2 ₁ - 2 _o , 2i, 2j...unit, 21...bus bar, 22...resistance connector, 23...door open/close switch terminal, 31 ₁ , 31 ₂ ...hole, 32...
...Resistor, 41 ... Printed circuit board, 42 ... Pattern, 43 ... Resistor, 5 ... Ignition switch, 6 ... Door ajar indicator, 7 ₁ , 7 ₂ ... Diode.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Wiring in a joint block that connects wire harnesses in an automobile to a fuse terminal provided in the joint block and a switch connected to multiple units. A wiring device for an automobile, characterized in that a resistor is inserted between terminals connected to a switch connected to a plurality of units, or between a terminal connected to a switch connected to a plurality of units and an earth side terminal. (2) The vehicle according to claim 1, wherein the fuse terminal is a fuse terminal that supplies power to a load that is turned on/off by a switch connected via the resistor. wiring device. (3) The automotive wiring device according to claim 1 or 2, wherein the resistor is inserted by directly connecting a connector containing the resistor to the joint block. (4) The automotive wiring device according to claim 1 or 2, wherein the resistor is inserted by press-fitting the resistor into a hole formed in a wiring bus bar. (5) The automotive wiring device according to claim 1 or 2, wherein the wiring in the joint block is formed by mounting the resistor on a pattern of a printed circuit board. (6) the fuse consists of a ceiling light fuse;
Claim 1, wherein the switch is a door opening/closing switch.
The automotive wiring device according to item 2, 3, 4, or 5. (7) Utility model registration claims 1 and 2, characterized in that the fuse is an instrument fuse, and the switch is a vehicle speed lead switch or a parking brake switch.
The automotive wiring device according to item 3, 4, or 5. (8) Utility model registration claims 1 and 3, characterized in that the switch is an ignition switch or a tail lamp switch.
5. The automotive wiring device according to item 4 or 5.