JPH019017Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection checker that prevents wire harnesses from being erroneously connected or unconnected.

Generally, as shown in FIG. 1, wire harnesses are divided into a dart board wire harness 2a, a roof wire harness 2b, a door wire harness 2c, a rear wire harness 2d, etc., depending on how they are assembled into the vehicle body 1. These wire harnesses 2a, 2b, 2c, 2d have connectors 3a, 3b, 3c, 3d, 3 provided at their ends.
They are connected to each other by e, 3f, etc.

However, on a vehicle assembly line, it is dark and it is difficult to see where all the joints are to be joined, and since the joints are manually joined, unjoints or incorrect joints are likely to occur, resulting in a reduction in work accuracy and efficiency.

The present invention was developed to solve the above-mentioned problems in connecting wire harnesses, and its purpose is to quickly detect unconnected or incorrectly connected wire harnesses and quickly identify and correct the defective parts. Our goal is to provide a wire harness bonding checker that can be used.

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 2, two sets of electric wires 4a, 4b are branched from the first wire harness 4, and connectors 5a, 5b are attached to their terminal ends.

On the other hand, the second wire harness 6 also has two sets of electric wires 6.
a and 6b are branched, and connectors 7a and 7b to be connected to the above-mentioned connectors 5a and 5b are attached to the ends thereof, respectively.

Check circuit electric wire 8 parallel to the electric wire 4a
A is wired, one end of which is grounded to the vehicle body, and the other end connected to the upper terminal 5a ₁ of the connector 5a. A power source 9 and a check connector 10 are interposed in the middle of the check circuit electric wire 8a. A check circuit electric wire 8b is also wired in parallel to the power source 4b, one end of which is grounded to the vehicle body and short-circuited to one end of the check circuit electric wire 8a, and the other end is connected to the middle of the connector 5b. Connected to terminal _5b2 .

On the other hand, a check circuit electric wire 8c is also wired on the second wire harness 6 side, one end of which is connected to the upper terminal _7a1 of the connector 7a, and the other end is connected to the intermediate terminal _7b2 of the connector 7b. It is connected.

Incidentally, FIG. 3 shows a check lamp 11 as an example of a checker, and its connector 11
a can be connected to the above-mentioned check connector.

Since this embodiment is configured as described above,
As shown in FIG. 4, when the connectors 5a and 7a are properly connected, and the connectors 5b and 7b are also connected correctly, each check circuit electric wire 8
a, 8c, and 8b are sequentially connected in series to form a check circuit as a whole, and a check lamp 11
lights up to confirm normal connection.

However, as shown in FIG.
If b and 7b are not connected, the check circuit wires 8b and 8c will not be connected, and the check circuit will be disconnected at this point.As a result, no current will flow through the wire 8a, and the lamp 11 will not light up, resulting in a disconnection. Abnormalities can be detected.

Further, as shown in FIG. 6, the connector 7a
If the connectors 7b and 7b are swapped and the connector 7b is accidentally connected to the connector 5a, and the connector 7a is connected to the connector 5b, the check circuit wire 8a is connected to the upper terminal of the connector 5a, whereas the , the check circuit wire 8c is connected to the connector 7.
Since the wire 8a is connected to the intermediate terminal 7b ₂ of the wire 8b, the wire 8a is connected to the intermediate terminal 7b 2 of the
and 8c are not short-circuited, and likewise electric wires 8b and 8c are not short-circuited when connectors 5b and 7b are connected. Therefore, if the connectors are connected incorrectly, each check circuit wire 8a, 8
c, 8b, the check circuit is not established and the lamp 11
Since it does not light up, you can detect a connection error.

The checker of the present invention is not limited to the above embodiment, but only when all the connectors are connected in the correct direction will the check circuit be established in series, and a lamp or other suitable check means to confirm energization will be installed. It is sufficient if it is configured to operate.

As described above, the present invention comprises a first wire harness having a plurality of connectors, a second wire harness having a plurality of connectors coupled to the connectors of the first wire harness, and wiring to the wire harness. When connected normally, the above connectors form a series circuit between the check circuit wires connected to the power supply at one end and grounded at the other end, and the series circuit is formed between the plurality of connectors in each wire harness. Since the terminals to be formed are arranged at different positions and the checker is detachably attached to the check circuit, even if there are a large number of connectors connected to each other, it is easy to use a single checker. Since only one check circuit wire needs to be wired, there is no need for wires to become bulky, and by connecting a removable checker to the check circuit, unconnected and incorrectly connected wire harnesses can be easily and quickly detected with one touch. It has the effect that it can be discovered immediately and the joining work can be done accurately and quickly.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a general wire harness connection point near the lower right side of the dash board of a vehicle, Fig. 2 is a check circuit diagram showing an embodiment of the present invention, Fig. 3 is a schematic diagram of a check lamp, and Fig. 3 is a schematic diagram of a check lamp. FIG. 4 is an operational diagram of the check circuit in a normally connected state, FIG. 5 is a diagram in which the check circuit is inactive in an unconnected state, and FIG. 6 is a diagram in which the check circuit is inactive in an incorrectly connected state. 4, 6...Wire harness, 5a, 5b, 7
a, 7b...connector, 8a, 8b, 8c...check circuit wire, 10...check connector.

Claims (1)

[Scope of utility model registration request] It consists of a first wire harness having a plurality of connectors, and a second wire harness having a plurality of connectors that is coupled to the connector of the first wire harness, and is wired to the wire harness and has one end connected to a power source. When connected correctly, the above connectors form a series circuit between the check circuit wires, which are grounded and the other end is grounded.
A wire harness characterized in that terminals forming the series circuit are arranged at different positions between a plurality of connectors in each wire harness, and a checker is detachably provided with respect to a check circuit. Combine checker.