JPS5923320Y2 - Focused assembly wire - Google Patents

Description

[Detailed description of the invention] The present invention relates to a bundled assembled electric wire used to connect the electrical system of automobiles, etc., and in particular, it does not break even if external force is applied during assembly work etc. The purpose of the present invention is to provide a bundled assembled electric wire that exhibits excellent effects.

Focused assembled wires, such as tubed wires, are generally
~ As shown in Figure 3, a wire convergence section 3 consisting of a plurality of wires 3a covered with a synthetic resin tube 2 and a connector terminal 5 connected to each wire 3a by caulking each at the end thereof are attached to a connector housing. The device has a connector housed in the connector 1, and after being placed in a predetermined position in an automobile, etc., electrical connections can be made collectively by fitting into the corresponding connector. .

However, since such bundled assembled electric wires are arranged in a curved manner according to their arrangement route, each electric wire is It is inevitable that there will be a dimensional difference between 3a.

For this reason, external forces such as tensile forces applied when placing or fixing the bundled assembled wires in a predetermined position or when mating corresponding connectors are applied to the shortest wire portion in the free portion 4. Due to the concentrated action, there is a danger that the wire portion may be cut at the connection (crimped portion) 6 with the connector terminal 5 inside the connector housing 1, and strict care must be taken when handling it during assembly work. Met.

In addition, even after assembly, tensile force will be applied due to the vibration of the bundled assembled electric wire at the point where the vibration is transmitted to the assembled electric wire, and in this case as well, there is a risk that the caulked portion will break as described above. There is.

Conventionally, such problems have been dealt with by increasing the wire diameter of all the wires constituting the bundled assembled wire in order to increase the strength of the connection with the connector terminal.

In other words, wires that are much thicker than wires with a diameter that is suitable for the current flowing at a predetermined installation location (hereinafter simply referred to as "required wires"), such as wires with a diameter of at least 2 mm for automobiles, are used to reduce the tensile force, etc. This forms a connection that can withstand external forces.

However, in this case, wires that are thicker than necessary are used, and as the number of bundled wires increases, the bundled wires become extremely heavy and thick. Not only is this extremely difficult, but it is also extremely uneconomical, and the connector housing for accommodating the wires also becomes larger than necessary.

Moreover, in recent years, the demand for weight reduction of automobiles has extended to such bundled assembled electric wires, and it is recommended to replace each electric wire that makes up the bundled assembled electric wire with aluminum wire or thin wire to reduce the weight of the vehicle as much as possible. However, these aluminum wires, thin wires, etc. are inferior to the normally used automotive wires (AV wires) in the vibration resistance and strength of the caulked part with the connector terminal, and are not suitable for that purpose. Since it is not possible to increase the diameter of the wire, the problem of cutting at the caulked portion described above has become a major problem to be solved.

The present invention was developed against this background, and its purpose is to prevent the electric wire from breaking (broken wire), especially at the connection with the connector terminal, even if an external force such as a tensile force is applied. It is an object of the present invention to provide a bundled assembled electric wire with a high bonding strength without causing any damage, and thereby to enable the use of aluminum wires, thin wires, etc. as component wires of the bundled assembled electric wire.

In such a bundled assembled electric wire, some of the plurality of electric wires constituting it are wires with high tensile strength, and the housing position of the connector terminal of the electric wire in the connector housing is set to be similar to that of the connector terminal of other electric wires. This can be obtained by holding the wire while being shifted to the side opposite to the wire.

Hereinafter, the present invention will be explained in more detail based on drawings showing embodiments.

FIG. 4 is a perspective view showing an example of a bundled assembled electric wire according to the present invention, and FIG. 5 is a cross-sectional view thereof.

In the figure of Nikakasu, reference numeral 11 denotes a multipolar connector housing made of synthetic resin, and the center portion 11a on the wire side thereof has a stepped shape with a step l protruding toward the wire side.

Further, 12 is an electric wire convergence section, and the electric wire convergence section 12 includes 2
A large number of electric wires consisting of seed electric wires 13a and 13b are PV
It is constructed by being covered with a C tube 12a.

As shown in FIG. 5, these electric wires 13a and 13b are connected to connector terminals 14a and 14b, respectively, by caulking or the like to form connecting portions 15a and 15b (only a portion of which is shown), and the connector terminals 14 a, 1
4b is fixedly housed in a predetermined position within the connector housing 11 according to the present invention.

That is, some of the electric wires 13a constituting the converging electric wire are AV
The connector terminal 14a connected to the wire has high tensile strength, such as a wire or a copper core wire, and is displaced from the recesses 11b on both sides of the stepped portion on the wire side of the connector housing 11, in other words, toward the side opposite to the wire. It is housed and held within the connector housing 11.

On the other hand, the connector terminal 14b connected to the end of the other wire 13b is accommodated and held within the housing 11 along with the central convex portion 11a of the stepped portion on the wire side of the connector housing 11.

Therefore, such electric wires 13a, 13b (I connector terminal 14a).

Due to the difference in the storage position of the wire 14b) based on the step l in the connector housing 11, the electric wire 13a becomes dimensionally taut as shown in FIG. Become.

As a result, the external force such as tensile force applied during the installation work is concentrated on the wire 13a that is slightly stretched, and the wire 13b is not affected by the wire 13b, which has walnuts in the free part. Electric wire 13b is connected to connector terminal 14b
This eliminates the possibility of disconnection (breakage) at the connecting portion 15b.

Moreover, the electric wire 13a is subjected to concentrated force.
Since a wire with higher tensile strength than the other wires 13b is selected and used, the connecting portion 1 with the connector terminal 14a is
5a has a large bonding strength, and therefore the portion that is subjected to external force is hardly likely to break.

In this way, it is possible to obtain a bundled assembled electric wire having sufficient bonding strength so that a particular electric wire will not be cut (broken) due to an external force such as a tensile force applied during arrangement.

Further, in the above embodiment, the connector 16 corresponding to the connector for the bundled assembled electric wire according to the present invention is fixedly attached to the relay block 17 and is fitted to the connector 16 ( As shown in FIG. 4), it is desirable that the connector to which the bundled assembled electric wire of the present invention is connected is fixed to a relay block or the like.

However, if the electric wire connected to the connector terminal of the mating connector is a wire with high tensile strength, such as an AV wire, such fixing is not necessary.

Furthermore, as in the above embodiment, a wire 13b with low strength is placed in the center, and wires 13b with high tensile strength are placed on both sides of the wire 13b.
By arranging the wire 13b, there is an advantage that the electric wire 13b can be effectively protected even when tensile forces (external forces) are applied in multiple directions.

In particular, with the configuration of the present invention, each wire length in the free portion of the bundled assembled wire can be cut to the same length, making it possible to automate the manufacturing. The fact that it is now possible to use long-awaited electric wires such as aluminum wires and thin electric wires as the other electric wires 13b to be protected, and this can also contribute to reducing the weight of vehicles. This is also one of the major features of this invention.

Note that the present invention is not limited to the above-mentioned examples, and various changes and modifications can be made without departing from the spirit of the present invention.

For example, if a wire with a higher tensile strength, such as a copper core wire, is used as the wire 13a, which is housed in the connector housing while being shifted toward the side opposite to the wire, the same purpose can be achieved with a thinner wire diameter. , and is lightweight.

Further, the number of such high tensile strength electric wires 13H can be appropriately selected depending on the number of poles of the connector (the number of electric wires), the magnitude of external force, and the like.

Furthermore, if the electric wire with high tensile strength is used as a signal wire, since almost no electricity flows through this electric wire, it is possible to select the type of electric wire with emphasis on strength. This has the advantage that the amount of current supplied is not impaired.

Note that the tensile strength of an electric wire is generally increased by increasing the wire diameter, but even if such a thick electric wire is used as the electric wire 13a with high tensile strength in the present invention, since the number of such thick electric wires used is small, the thickness of the bundled electric wire as a whole may be increased. There is no noticeable difference.

In addition, regarding the step l on the wire side of the connector housing, that is, the deviation difference of the wire 13a with high tensile strength, it is necessary to consider the number of wires, the material, the installation position, etc. The amount will be appropriately selected so that it will not be affected by external forces.

As described in detail above, the present invention uses a specific number of wires with high tensile strength characteristics in a plurality of wires, and holds the wires in a connector housing by shifting the wires away from the other wires. This is a bundled assembly electric wire characterized by having a walnut on the free part of the other electric wire, and this structure reduces the tensile force applied to the bundled electric wire during installation and assembly work, etc. External forces are no longer applied to the weaker wires that make up most of the converging wires, thereby eliminating the possibility of these wires breaking at the connection.

Therefore, it becomes possible to reduce the wire diameter to the required wire diameter, and the weight reduction and assembly of bundled assembled wires will be far easier, and there will be great economic advantages. It has many excellent effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the connector part of a conventional bundled assembled wire, FIG. 2 is an explanatory diagram showing the end of the bundled wire, and FIG. 3 is an explanatory diagram showing one wire and a connector terminal. FIG. 4 is a perspective view showing an example of the bundled assembled electric wire according to the present invention, and FIG. 5 is a cross-sectional view of the connector portion of FIG. 4. 1.11: Connector housing, 2, 12 a: Tube, 3.12: Wire concentrator, 3a, 13a, 13
b: Electric wire, 5゜14a, 14b: 7 connector terminal, 6,1
5a, 15b: Connection part.

Claims (1)

[Scope of utility model registration request] In a bundled assembled electric wire in which a connector terminal is connected to each end of a plurality of bundled electric wires, and the plurality of connector terminals are accommodated in one connector housing and connected to corresponding connector terminals, the plurality of electric wires are Some of the wires are wires with high tensile strength, and the housing position of the connector terminal of the wire in the connector housing is shifted to the opposite side of the wire than the connector terminal of the other wire. A bundled assembled electric wire featuring: