JPH09161908A - Connecting structure for wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply connect electric wires together and reduce the number of part items by collecting the electric wires of electric wire groups connected to multiple wire harnesses for each connection group, and splicing their terminals by concentrated welding. SOLUTION: Electric wire groups W1, W2, W3 of harnesses 7, 8, 9 are wound and bundled with a tape 25, and electric wires are collected for each connection group from this bundling position. Electric wires of groups A, B, C are peeled to expose core wires at the other end terminals, they are inserted into connecting terminals 11, 12, 13 at one end and welded to form terminal concentrated slice sections 20, 21, 22. Terminal sections 11a, 12a, 13a formed on the connecting terminals 11, 12, 13 fitted to the terminal concentrated splice sections 20, 21, 22 are inserted into a joint connector 10 and hooked. The fitting work of the connecting terminals 11, 12, 13 to individual electric wire terminals and the inserting work of the connecting terminals 11, 12, 13 into the joint connector 10 are not required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for wire harnesses of an automobile, and more particularly to a splice connection that can be easily absorbed.

[0002]

2. Description of the Related Art A large number of large wire harnesses such as instrument panel harnesses (hereinafter abbreviated as instrument panel harnesses), cowl harnesses, front harnesses, floor harnesses, roof harnesses and door harnesses are required for automobiles. Among the electric wire groups that form one wire harness, the electric wires that need to be connected to each other are connected by splice connection. In addition, when it is necessary to connect to an electric wire forming another wire harness, a large joint connector is used for connection.

[0003]

When a splice portion is provided on each wire harness, it is necessary to peel off the wire to be connected to expose the core wire, crimp it with the connecting terminal, and then wind the insulating tape. There is a problem that the sealing agent is filled in order to waterproof the splice portion, which is necessary and laborious, resulting in very poor productivity. Further, there is a problem that the outer diameter of the wire harness becomes large at the splice portion.

Further, when connecting to the electric wire of another wire harness, the connecting terminals are attached to the ends of the electric wires to be connected and inserted into the terminal accommodating chamber of the joint connector,
Connection is made via a conductive plate provided in the joint connector or by directly contacting the terminal portions of the connection terminals.
As described above, it is necessary to attach a connection terminal to each electric wire, which causes a problem that the number of parts is increased and the number of working steps is increased.

The present invention has been made in view of the above problems, and it is possible to easily and simultaneously connect the electric wires in one wire harness and the electric wires of another wire harness that need to be electrically connected. The purpose is to do.

[0006]

In order to achieve the above-mentioned object, the present invention according to claim 1 collects electric wire groups to be respectively connected to a plurality of wire harnesses for each same connection group, and an electric wire terminal for each group. A wire harness in which the connecting terminal is welded or crimped to the more exposed core wire to form the terminal concentrated splice, and the terminal portion formed on the connection terminal for the concentrated splice is accommodated in the terminal accommodating chamber of the joint connector. The connection structure is provided.

In the wire harness connection structure according to the first aspect of the present invention, a group of electric wires to be connected to a plurality of wire harnesses are collected for each same connection group, and the terminal is spliced to one end of the connection terminal by centralized welding. The terminal provided on the other end is inserted into the joint connector. Since the wires that need to be connected to the same and other wire harnesses are connected by a centralized splice, it is not necessary to house a conductive plate etc. inside the joint / connector, and the wires can be easily connected. . Moreover, since it is not necessary to attach a connection terminal to each electric wire, the number of parts and the number of working steps can be reduced.

According to a second aspect of the present invention, electric wires each having one end connected to each of a plurality of wire harness connection connectors are collected in the same connection group, and the connection terminals are connected to the core wires exposed from the ends of the electric wires in each group. A wire harness connection structure in which a terminal centralized splice is formed by welding or crimping and crimping, and a terminal portion formed on the connection terminal for the centralized splice is housed in an empty terminal housing chamber of the wire harness connecting connector. Are offered.

As described above, a group of electric wires connected to a plurality of wire harnesses each having one end connected to a connector for connecting a wire harness is collected for each same connection group, and terminal concentrated splicing is performed using the connection terminals. When the terminal portion formed in the above is housed in the empty terminal housing chamber of the connector provided for connecting the wire harness, it is not necessary to separately provide the joint connector.

As described above, when a group of electric wires that need to be electrically connected to each other is put together and the end thereof is crimped or welded to a centralized splice, the electric wires to be connected can be easily changed and added. Can respond to changes.

The wire harnesses connected to each other by the terminal concentrated splice are at least two wire harnesses among an instrument panel harness, a floor harness, a front harness, a roof harness, a door harness, and a cowl harness of an automobile.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment. In the figure, reference numerals 1, 2, 3 respectively denote connectors for connecting a wire harness, a connector 1 is a connector 4 attached to a front harness W / H1, and a connector 2 is a floor harness W. /
The connector 5 attached to H2 and the connector 3 are connected to the connector 6 attached to the cowl harness W / H3, respectively. In the figure, 10 is a joint connector.

The electric wires W1, W2, W3 of the harnesses 7, 8, 9 for connecting one end to the connectors 1, 2, 3 respectively,
Each front harness W / H1, floor harness W /
Among the many electric wire groups that form the H2 and the cowl harness W / H3, the electric wires that need to be electrically connected to the electric wires in the same wire harness and other wire harnesses are collected.

Wire groups W1, W of the harnesses 7, 8, 9
As shown in FIG. 1, tapes 25 and 2 and W3 are wrapped around a tape 25 and once focused, and then collected from the focusing position for each electric wire in the same connection group. That is, in the first group A, the harness 7
The electric wires W1-1 and W1-2 of the electric wire W1 of No. 3, the electric wire W2-1 of the electric wire W2 of the harness 8, and the electric wire W3-1 of the electric wire W3 of the harness 9 are collected. In the second group B, the electric wires W1-3, W2-2, W2-3, W3
-2 are collected. In the third group C, the electric wires W1-4,
W2-4, W3-3, and W3-4 are collected.

The other end of the electric wire group of each of the groups A, B and C is peeled off to expose the core wire, and the connection terminals 1
Inserted at one end of 1, 12, 13 and welded to form terminal concentrated splice portions 20, 21, 22. Terminal portions 11a, 12a formed on the connection terminals 11, 12, 13 attached to the terminal concentrated splice portions 20, 21, 22,
13a is inserted and locked in the joint connector 10.

The connection terminals 11, 12 and 13 have the same shape. To explain using the connection terminal 11 shown in FIG. 3, the board portion 1 is provided at one end in the length direction of the elongated rectangular board portion 11b.
A pair of barrel portions 11c are provided so as to project from both sides of 1b to form concentrated welding portions. At the other end of the substrate portion 11b in the length direction,
A female terminal portion 11a is formed by sequentially bending the substrate portion 11b from one side into a rectangular frame shape. A locking hole 11d is formed on one surface of the terminal portion 11a. In addition,
The terminal portion may have a male shape.

As shown in FIG. 3 (B), a group of electric wires for concentrated splicing is bundled and inserted between the barrel portions 11c of the connection terminals 11 with their ends stripped, and in this state. , The stripped core wires, the core wires and the substrate portion 11b of the connection terminal 11, and the pair of barrel portions 11c.
We are welding and. The barrel 11c is crimped and crimped as shown in FIG.
2 may be formed.

Terminal portions 11a, 12a, 13a of the connection terminals 11, 12, 13 to be inserted into the joint connector 10.
Since the wires to be connected have already been connected, it suffices to insert them into the respective terminal accommodating chambers 10a of the joint connector 10 and hold and hold them. There is. Joint connector 1
The terminal portion 11a inserted into each terminal accommodating chamber 10a of No. 0 holds the connection terminal 11 by locking the locking hole 11d with a lance (not shown) projecting from the inner surface of the terminal housing chamber 10a. Similarly, the terminals 12a and 13a are also inserted and retained in the terminal accommodating chamber 10a of the joint connector 10 so as to be retained.

With the above arrangement, when it is necessary to connect the electric wires in one wire harness and the electric wires in another wire harness, the terminals can be simultaneously connected by the terminal concentrated splice. Moreover, since the terminal concentrated splicing is performed using the connection terminals, it suffices to insert and lock the terminal portions of the connection terminals into the terminal accommodating chambers of the joint connector 10.

FIG. 2 shows a second embodiment, in which the terminal concentrated splice portions 20, 21, 22 are inserted and retained in the empty terminal accommodating chambers of the connectors 1, 2, 3. That is, the joint connector used in the first embodiment is unnecessary,
The splice parts 20 and 21 are inserted in the connector 1, and the splice part 22 is inserted in the empty terminal accommodating chamber of the connector 2.

Since the electric wires of the same connection group are collected and connected by the terminal centralized splice as described above, when the circuit is changed due to the specification change, it is only necessary to change the electric wires to be centrally welded or centrally crimped. Further, when an optional circuit is required, it can be dealt with by simply splicing the optional electric wire in addition to the above-mentioned concentrated welding or concentrated crimping portion.

The electric wire group forming one splice portion by the concentrated welding may include electric wires for the power supply circuit and the signal circuit as long as they need to be electrically connected.

[0023]

As is apparent from the above description, in the wire harness connection structure of the present invention, a group of electric wires to be connected to a plurality of wire harnesses are collected for each same connection group, and a terminal concentrated splice is made by using connection terminals. Since it is provided, the splice connection can be performed very simply by only accommodating the terminal portion formed on the connection terminal in the joint connector and the empty terminal accommodating chamber of the wire harness connection connector.

Therefore, it is not necessary to attach the connection terminals to the respective wire terminals and insert the connection terminals into the joint connector, which are conventionally required, and the joint
Since it is not necessary to make a connection with the conductive plate provided in the connector, the number of parts can be significantly reduced. Further, by inserting and locking the terminal portion of the connection terminal of the terminal concentrated splice using the empty terminal accommodating chamber of the connector, the joint connector itself can be omitted.

Further, since a group of electric wires which need to be conducted is simply put together and the end thereof is crimped or welded to the connection terminal to perform centralized splicing, it is possible to easily change or add the electric wire to be connected, It is possible to respond to specification changes.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a connection structure of a wire harness according to a first embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a connection structure of a wire harness according to a second embodiment of the present invention.

3 (A), (B) and (C) are perspective views showing connection terminals for centralized splicing.

[Explanation of symbols]

1-3 Wire harness connection connector 7-9 Harness 10 Joint connector 11-13 Connection terminal 11a-13a Terminal part 20-21 Terminal concentrated splice part W1, W2, W3 Electric wire group W1-1-W1-4, W2- 1-W2-4, W3-1
W3-4 electric wire

Front page continued (72) Inventor Masayasu Uchida 1-14 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (2)

[Claims] 1. An electric wire group to be respectively connected to a plurality of wire harnesses is collected for each same connection group, and for each group, a connecting terminal is welded or caulked to a core wire exposed from an end of the electric wire to form a terminal concentrated splice. A connection structure for a wire harness in which the terminal portion formed in the connection terminal for the centralized splice is housed in the terminal housing chamber of the joint connector while being formed. 2. An electric wire whose one end is connected to each of a plurality of wire harness connecting connectors is collected for each same connection group, and the connection terminal is welded or crimped to the core wire exposed from the end of the electric wire for each group. A wire harness connection structure in which a terminal centralized splice is formed and a terminal portion formed on a connection terminal for the centralized splice is accommodated in an empty terminal accommodating chamber of the wire harness connecting connector.