JP6294742B2 - Wire harness and manufacturing method thereof - Google Patents

Description

  The present invention relates to a wire harness and a manufacturing method thereof, and in particular, a wire that can prevent a transmission line from being broken and can be easily installed even when stress is applied during binding or installation. The present invention relates to a harness and a manufacturing method thereof.

  In general, wire harnesses used in automobiles, home appliances, etc., collect a group of wires connected to the same device in advance to form a temporary binding harness, and use these jigs on the wire harness assembly work table. After being used and wired, this is bundled by tape winding or the like and manufactured by attaching necessary parts such as connectors.

  On the other hand, conventionally, when a transmission line that is weak against external forces such as bending or impact is applied to an optical fiber or the like, the transmission characteristics are affected by bending or pulling. Conventionally, optical fiber transmission technology using a so-called air blow method has been disclosed.

  Conventionally, as an optical fiber wiring technique using such an air blow method, for example, a new optical fiber unit is routed by an air bron optical fiber method from the middle of an optical fiber pipe through which an optical fiber unit is already passed. The technique made to do is disclosed (for example, refer patent document 1).

Japanese Patent Laid-Open No. 10-096841

  However, when an optical fiber that has been wired using the technique of Patent Document 1 is applied to a wire harness, it is extremely difficult to completely prevent stress from being applied to the wire harness. That is, there is a problem that it is necessary to bind an optical fiber and a harness made of electric wires, and stress is applied to the optical fiber due to this binding. Furthermore, the optical fiber and the harness are intricately intertwined, and the wire harness may be bent or strongly pushed during the work of installing the wire harness at a predetermined location, and stress is applied to the wire harness. It was impossible to add nothing at all. For this reason, if stress is applied to the optical fiber more than necessary, the transmission characteristics of the optical fiber may deteriorate, or in some cases, the optical fiber may be broken, causing a failure as a wire harness. ing.

  The present invention has been made in view of the above points, and even when stress is applied at the time of bundling or installation, a wire harness that can prevent a transmission line from being broken and can easily perform installation work. The object is to provide a manufacturing method thereof.

In order to achieve the above object, a wire harness according to the present invention binds an electric wire bundle composed of a plurality of electric wires and at least one hollow pipe together, and passes a transmission line inside the hollow pipe. A string-like member for wiring is inserted, and at both ends of the hollow pipe, lid members that are attached after the transmission line are passed and that hold the transmission line are provided .

According to this configuration, since the string-like member for passing the transmission line is inserted into the hollow pipe, after the wire harness is installed at a predetermined location, the string-like member is used to form the hollow pipe. By passing the optical fiber, the transmission line can be easily passed.
In addition, since lid members are provided at both ends of the hollow pipe after the transmission line is passed to hold the transmission line, the lid member can hold the transmission line at both ends of the hollow pipe. The transmission line can be stably held in the hollow pipe, and the provision of a cover member can prevent water and foreign matter from entering the hollow pipe and protect the transmission line. it can.

  Moreover, the present invention is characterized in that, in the configuration described above, a holding portion for holding the string-like member is formed in the hollow pipe. According to this configuration, since the holding portion for holding the string-like member is formed in the hollow pipe, the string-like member comes off the hollow pipe when performing the operation of installing the wire harness at a predetermined location. This can be surely prevented.

  Moreover, the present invention is characterized in that, in the above-described configuration, connectors attached after the transmission line is provided are provided at both ends of the transmission line. According to this configuration, since the connectors are attached to both ends of the transmission line after the transmission line is passed, the connector can be attached after the transmission line is passed and the transmission line can be connected to a predetermined device. .

  Further, the present invention is characterized in that, in the above configuration, the transmission line is an optical fiber. According to this configuration, since the transmission line is an optical fiber, a wire harness incorporating the optical fiber can be installed without applying stress to the optical fiber that is weak against bending and buckling.

Moreover, the method for manufacturing a wire harness according to the present invention includes a step of binding together an electric wire bundle composed of a plurality of electric wires and at least one hollow pipe, and the electric wire bundle and the hollow pipe at a predetermined location. And a step of passing a transmission line inside the hollow pipe after installation, and the step of passing the transmission line inside the hollow pipe includes flowing a gel-like fluid together with the transmission line. It is characterized by performing.

According to this configuration, an electric wire bundle composed of a plurality of electric wires and at least one hollow pipe are bundled together, and the electric wire bundle and the hollow pipe are installed at a predetermined location, and then transmitted to the inside of the hollow pipe. Since the wires are routed, no stress is applied to the transmission line even when stress is applied when the wire harness is bundled or when the wire harness is installed. As a result, failure of the transmission line is significantly reduced. be able to. Moreover, since it is not necessary to perform the installation work of the wire harness while paying attention to the transmission line, the installation work of the wire harness can be easily performed.
In addition, since a gel-like fluid is flowed along with the transmission line , the transmission line is routed inside the hollow pipe, so that friction between the inner wall surface of the hollow pipe and the surface of the transmission line is reduced during the passage. In addition, since a forward traveling force is generated by the fluid frictional force in the direction of the line, the transmission line can be easily routed. Moreover, by encapsulating the gel together with the transmission line inside the hollow pipe, the gel functions as a buffer material, and even when an external impact or the like is applied, the transmission line can be properly protected.

Further, the present invention is characterized in that, in the above configuration, after the wire bundle and the hollow pipe are installed at predetermined positions, the transmission line is passed through the hollow pipe using a string-like member. According to this configuration, after the wire bundle and the hollow pipe are installed at predetermined positions, the transmission line is passed through the hollow pipe using the string-like member. Even when stress is applied during installation, no stress is applied to the transmission line, and as a result, failure of the transmission line can be significantly reduced. Moreover, since it is not necessary to perform the installation work of the wire harness while paying attention to the transmission line, the installation work of the wire harness can be easily performed.

  Further, the present invention is characterized in that, in the above configuration, the method further includes a step of attaching connectors to both ends of the transmission line after the transmission line is passed. According to this configuration, since the connectors are attached to both ends of the transmission line after the transmission line is passed, the connector can be attached after the transmission line is passed and the transmission line can be connected to a predetermined device. .

  Moreover, the present invention further includes a step of attaching lid members for holding the transmission line to both ends of the hollow pipe at both ends of the hollow pipe in the configuration described above after passing the transmission line. It is characterized by that. According to this configuration, since the lid member that is attached to the both ends of the hollow pipe after the transmission line passes and holds the transmission line is provided, the transmission line is held at both ends of the hollow pipe by the lid member. It is possible to stably hold the transmission line in the hollow pipe, and by providing a lid member, it is possible to prevent water and foreign matter from entering the hollow pipe. Can be protected.

  Further, the present invention is characterized in that, in the above configuration, the transmission line is an optical fiber. According to this configuration, since the transmission line is an optical fiber, a wire harness incorporating the optical fiber can be installed without applying stress to the optical fiber that is weak against bending and buckling.

  According to the present invention, after the wire bundle and the hollow pipe are installed at predetermined positions, the transmission line is passed through the hollow pipe using the string-like member. Even when stress is applied during installation, no stress is applied to the transmission line, and as a result, failure of the transmission line can be significantly reduced. Moreover, since it is not necessary to perform the installation work of the wire harness while paying attention to the transmission line, the installation work of the wire harness can be easily performed.

It is a schematic perspective view which shows embodiment of the wire harness which concerns on this invention. It is a longitudinal section showing an embodiment of a wire harness concerning the present invention. It is the schematic which shows the holding | maintenance part of the hollow pipe in embodiment of the wire harness which concerns on this invention. It is the schematic which shows the cover member in embodiment of the wire harness which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing an embodiment of a wire harness according to the present invention, FIG. 2 is a longitudinal sectional view showing an embodiment of the wire harness, and FIG. 3 shows a holding portion of a hollow pipe in the embodiment of the wire harness. FIG. 4 is a schematic view showing a lid member in the embodiment of the wire harness.

  In the present embodiment, a wire harness 10 used for electrical wiring of automobiles, home appliances and the like includes a wire bundle 12 including a plurality of wires 11 connected to a predetermined device. These wire bundles 12 are cut so as to have a predetermined length corresponding to each device, and this wire bundle 12 is configured to branch at a predetermined location according to the connection position to each device. Yes. And the electric wire bundle 12 is comprised so that the predetermined location of the electric wire bundle 12 may be bundled with the binding members 14, such as a tape and a band. A connector 16 to which a known male terminal or female terminal (both not shown) is attached is electrically connected to both ends of each electric wire 11 of the electric wire bundle 12.

  Here, in this embodiment, as shown in FIG. 2, the wire harness 10 is configured to bind the hollow pipe 20 together with the electric wires 11. The hollow pipe 20 is for passing the optical fiber 22 as a transmission line after the wire harness 10 is installed, and the hollow pipe 20 connects the optical fiber 22 (see FIG. 4) to a predetermined device. The length and arrangement are set according to the position of the device to be connected. The number of the hollow pipes 20 is arbitrarily set according to the number of devices to which the optical fiber 22 needs to be connected, and one or a plurality of hollow pipes 20 are set as necessary. It is. In FIG. 2, the example at the time of binding the two hollow pipes 20 is shown.

  In the present embodiment, as shown in FIG. 3, a string-like member 24 that can be connected to the optical fiber 22 is inserted through the hollow pipe 20 in advance. In addition, a string-like member locking portion 26 formed with a cut is provided at both ends of the hollow pipe 20, and both ends of the string-like member 24 are sandwiched between the string-like member locking portions 26, respectively. Thus, the string-like member 24 can be held in the hollow pipe 20. Thereby, when performing the operation | work which installs the wire harness 10 in a predetermined location, it can prevent reliably that the string-like member 24 remove | deviates from the hollow pipe 20. FIG.

  The wire harness 10 configured in this manner is installed at a predetermined location, and after the wire harness 10 is installed at a predetermined location, the optical fiber 22 is passed through the hollow pipe 20. It is configured. Examples of the optical fiber 22 include all glass fiber (both core and clad are glass), plastic fiber (core and clad are both plastic), and glass core fiber (core is glass and clad is plastic).

  Then, as shown in FIG. 4, after the optical fiber 22 is passed through the hollow pipe 20, connectors 28 for the optical fiber 22 are attached to both ends of the optical fiber 22. Furthermore, in this embodiment, it is comprised so that the cover member 30 may be mounted | worn with the both ends of the hollow pipe 20. As shown in FIG. The lid member 30 is engaged so as to close the end face of the hollow pipe 20, and a cylindrical holding portion for inserting and holding the optical fiber 22 is inserted into the substantially central portion of the lid member 30. 32 is formed. Then, with the optical fiber 22 inserted into the holding portion 32 of the lid member 30, the lid member 30 is engaged with the end of the hollow pipe 20, whereby the optical fiber 22 is connected to both ends of the hollow pipe 20 by the lid member 30. Therefore, the optical fiber 22 can be stably held in the hollow pipe 20. In addition, by providing the lid member 30, it is possible to prevent water and foreign matter from entering the hollow pipe 20 and to protect the optical fiber 22. Thus, the wire harness 10 through which the optical fiber 22 is passed is completed.

Next, the manufacturing method of the wire harness 10 which concerns on this invention is demonstrated.
In the present embodiment, first, the electric wire bundle 12 and the hollow pipe 20 that are cut to a predetermined length are bound so that the electric wire bundle 12 and the hollow pipe 20 can be connected to a predetermined device, and the connectors 16 are connected to both ends of the electric wire 11. To do.

  Next, the wire harness 10 thus configured is installed at a predetermined location, and then the optical fiber 22 is passed through the hollow pipe 20. At this time, in this embodiment, since the string-like member 24 is inserted into the hollow pipe 20, the optical fiber 22 is connected to one end of the string-like member 24, and the other end of the string-like member 24. The optical fiber 22 can be passed through the hollow pipe 20 by pulling.

  When passing the optical fiber 22 through the hollow pipe 20, the compressed fiber is sent from one end of the hollow pipe 20 together with the optical fiber 22 by, for example, an air blow method while pulling the optical fiber 22 by the string-like member 24. The optical fiber 22 may be passed through. When the optical fiber 22 is routed, the friction between the inner wall surface of the hollow pipe 20 and the surface of the optical fiber 22 can be reduced by flowing compressed air at the same time. Since the advancing force is generated by the fluid friction force, the optical fiber 22 can be easily routed. Further, in the present embodiment, when the optical fiber 22 is passed through the hollow pipe 20 by such an air blow system, the optical fiber 22 is pulled by the string member 24. The optical fiber 22 may be routed only by the air blow method without using it.

  Then, after the optical fiber 22 is passed through the hollow pipe 20 by the above-described process, the lid member 30 is engaged with the end of the hollow pipe 20 in a state where the optical fiber 22 is inserted into the holding portion 32 of the lid member 30. Then, after holding the optical fiber 22 against the hollow pipe 20, connectors 28 for the optical fiber 22 are attached to both ends of the optical fiber 22. Thus, the wire harness 10 through which the optical fiber 22 is passed is completed.

  As described above, in the present embodiment, the hollow pipe 20 is bundled together with the wire bundle 12 to the wire harness 10 and the wire harness 10 is installed at a predetermined location, and then the optical fiber 22 is passed through the hollow pipe 20. When the wire harness 10 is installed, the optical fiber 22 is not connected. Therefore, even if stress is applied when the wire harness 10 is bound or when the wire harness 10 is installed, the stress is applied to the optical fiber 22. As a result, the failure of the optical fiber 22 can be significantly reduced. Further, since it is not necessary to perform the installation work of the wire harness 10 while taking care of the optical fiber 22, the installation work of the wire harness 10 can be easily performed.

  Further, when it is necessary to improve the performance of the wire harness, or when it is necessary to replace the optical fiber 22 with a new one, the optical fiber 22 that has been passed through the hollow pipe 20 is pulled out to provide a new high performance. By passing the optical fiber 22 through, it is possible to improve the performance of the wire harness 10 itself. In this case, by using the optical fiber 22 that has already been pulled out as a string-like member 24 that has been inserted in advance, by connecting to the optical fiber 22 that is newly passed through and performing an operation of pulling out from the opposite side, The new optical fiber 22 can be easily routed.

  In addition, in the said embodiment, when passing the optical fiber 22 to the hollow pipe 20, the example which used the air blow system is shown, However, it is not limited to this, For example, resin with viscosity etc. The optical fiber 22 may be passed through the hollow pipe 20 by a so-called jelly blow system in which a gel-like fluid flows. In this case, after passing the optical fiber 22 through the hollow pipe 20, the gel is sealed together with the optical fiber 22 inside the hollow pipe 20 by attaching the lid member 30 as in the above embodiment. Therefore, the gel functions as a buffer material, and even when an external impact or the like is applied, the optical fiber 22 can be properly protected.

  In the above-described embodiment, the case where the optical fiber 22 is applied as the transmission line has been described. However, for example, a twisted pair transmission line in which the twist pitch has a great influence on the transmission performance. Of course, it may be applied to a line or the like.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible based on the meaning of this invention.

DESCRIPTION OF SYMBOLS 10 Wire harness 11 Electric wire 12 Electric wire bundle 14 Bundling member 16 Connector 20 Hollow pipe 22 Optical fiber 24 String-like member 26 String-like member latching | locking part 28 Connector 30 Lid member 32 Holding part

Claims (9)

  A wire bundle composed of a plurality of wires and at least one hollow pipe are bundled together, and a string-like member for passing a transmission line is inserted into the hollow pipe, and both ends of the hollow pipe The wire harness is characterized in that the part is provided with a lid member that is attached after the transmission line is passed and holds the transmission line.   The wire harness according to claim 1, wherein a string-like member locking portion for holding the string-like member is formed in the hollow pipe.   The wire harness according to claim 1 or 2, wherein a connector to be attached after the transmission line is provided at both ends of the transmission line.   The wire harness according to any one of claims 1 to 3, wherein the transmission line is an optical fiber. Bundling together a bundle of wires composed of a plurality of wires and at least one hollow pipe;
After installing the wire bundle and the hollow pipe at a predetermined location, the step of passing a transmission line through the hollow pipe,
The method of manufacturing a wire harness, wherein the step of passing the transmission line through the hollow pipe is performed by flowing a gel-like fluid together with the transmission line.   In the step of passing the transmission line inside the hollow pipe, the wire bundle and the hollow pipe are installed at predetermined positions, and then the transmission line is passed inside the hollow pipe using a string-like member. The manufacturing method of the wire harness of Claim 5 characterized by the above-mentioned.   The method of manufacturing a wire harness according to claim 5 or 6, further comprising a step of attaching connectors to both ends of the transmission line after the transmission line is connected.   6. The method according to claim 5, further comprising a step of attaching lid members for holding the transmission line to both ends of the hollow pipe at both ends of the hollow pipe after passing through the transmission line. The manufacturing method of the wire harness as described in any one of claim | item 7.   The said transmission line is an optical fiber, The manufacturing method of the wire harness as described in any one of Claims 5-8 characterized by the above-mentioned.

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