JP2011204466A - Electric wire fixing tool and method of manufacturing wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To overlay sub harnesses with high dimension accuracy without misalignment in a manufacturing process for separately assembling the sub harnesses in a pre-process and for overlaying and binding them in a post-process.SOLUTION: An option sub harness 13 supported by a wire receiving tool 11 in a boundary position is assembled in a state where the option sub harness 13 is held with a wire fixing tool 1 by using the clip-like wire fixing tool 1 that can be attached/detached to/from a wire receiving tool with the sub harness being held. When overlaying the option sub harness 13 on a common sub harness, the option sub harness 13 is pulled out of the wire receiving tool 11 with the wire fixing tool 1, and the wire fixing tool 1 is attached to the wire receiving tool on an assembling board to bind the option sub harness 13 and the common sub harness to each other.

Description

  The present invention relates to an electric wire fixture used for manufacturing a wire harness used in an automobile and the like, and a wire harness manufacturing method using the electric wire fixture.

In manufacturing a wire harness, a method of assembling a plurality of sub-harnesses separately in the preceding process and assembling one wire harness by combining the plurality of sub-harnesses in the subsequent process is often employed. For example, in Japanese Patent Application Laid-Open No. H10-260260, in consideration of the corresponding wire harness depending on the vehicle type, specifications, etc., a shared circuit (common sub-harness) including a circuit group including a signal circuit of permanent electrical equipment, and an optional electrical system circuit A method of manufacturing a desired wire harness by separately forming a dedicated circuit (optional sub-harness) consisting of a group and combining the sub-harness of the shared circuit and the dedicated circuit in order on a plurality of work tables. It is disclosed.
Also, in Patent Document 2, after assembling a base circuit portion (common sub-harness) shared by all vehicle types and an add-on circuit portion (optional sub-harness) that differs depending on the vehicle type, on different work benches. A method of manufacturing a wire harness by overlapping and binding a base circuit portion and an add-on circuit portion is disclosed.
Furthermore, Patent Document 3 also discloses a method of producing a wire harness by separately producing a common subharness that collects base circuits and an optional subharness that collects specific circuits, and selectively combining these subharnesses. Is disclosed.

Japanese Patent No. 2929838 Japanese Patent Laid-Open No. 2004-355941 JP 2003-59354 A

By the way, for assembling such a sub-harness, an assembly work table in which, for example, a U-shaped wire receiving jig is erected at a predetermined position is used. That is, the sub-harness is passed through the electric wire receiving jig to perform bundling, connector connection work, etc. Especially in the optional sub-harness, as disclosed in Patent Document 2, assembly work for the optional sub-harness On the table, the wires that make up the part that is not bound to the common sub-harness in the subsequent process are routed through the wire receiving jig, while the part that is tied to the common sub-harness is suspended between the two wire receiving jigs In this procedure, the optional sub-harness is assembled and bundled, and the optional sub-harness is overlaid on the common sub-harness on the assembly work table for the common sub-harness and wired and bound.
However, since the optional sub-harness is only placed on the electric wire receiving jig, the boundary between the binding portion and the non-binding portion with the common sub-harness may be shifted during the operation. Therefore, if the optional sub-harnesses that are bundled as they are are superimposed on the common sub-harness, a dimensional deviation occurs in the overlapping portions, resulting in failure to meet the specifications.

  Therefore, the present invention can perform the superposition of the sub-harnesses with high dimensional accuracy without deviation even in the manufacturing process in which the sub-harnesses are individually assembled in the preceding process and overlapped and bound in the post-process as described above. It aims at providing the manufacturing method of an electric wire fixing tool and a wire harness.

In order to achieve the above object, the invention according to claim 1 is an electric wire fixture, wherein a pair of clamping plates in which intermediate portions thereof are rotatably connected at a predetermined interval, and the clamping plates Assembling work of the wire harness formed by cutting the urging means for rotationally urging the end portions of each of the end portions toward each other, the electric wire holding portion formed between the inner end surfaces of the holding plate, and the end portion of the holding plate The wire receiving jig installed on the base is provided with a slit that can penetrate in an intersecting manner, and can be attached to and detached from the electric wire receiving jig while holding the electric wire supported by the electric wire receiving jig by the electric wire holding portion. It is a feature.
According to a second aspect of the present invention, in the configuration of the first aspect, an elastic material is provided on each inner surface of the end portions of the sandwiching plate that forms the wire sandwiching portion.
In order to achieve the above object, the invention according to claim 3 is an optional sub-harness of a wire harness formed by binding a common sub-harness forming a base circuit and an optional sub-harness forming an optional circuit. Are assembled in the first assembly work table in which the wire receiving jig is erected at the boundary position between the binding portion and the non-binding portion with the common sub-harness, while the common sub-harness is not connected to the binding portion with the optional sub-harness. Assembled in the second assembly workbench in which the wire receiving jig is erected at the boundary position with the bundling part, and the assembled optional sub-harness is superimposed on the common sub-harness assembled on the second assembly workbench. A method of manufacturing a wire harness that binds together,
In the first assembly workbench, the optional subharness supported by the wire receiving jig at the boundary position is clamped by the electric wire fixture according to claim 1 or 2, and the optional subharness is assembled to the common subharness. At the time of superposition, the optional sub-harness is removed from the electric wire receiving jig of the first assembly work table together with the electric wire fixing tool, and the electric wire fixing tool is connected to the electric wire receiving jig at the boundary position in the second assembling work table. The optional sub-harness and the common sub-harness are bundled together.
According to a fourth aspect of the present invention, in the configuration of the third aspect, in the second assembly work table, the common sub-harness supported by the electric wire receiving jig at the boundary position is the electric wire fixture according to the first or second aspect. Assemble the common sub-harness while holding it in place, and when overlaying the optional sub-harness, place the optional sub-harness-side electric wire fixture on the common sub-harness-side electric wire fixture and attach it to the electric wire receiving jig. It is characterized by this.

According to invention of Claim 1 and 3, even if it is a manufacturing process which assembles and bundles an option subharness and a common subharness separately in a previous process, and superimposes both in a subsequent process, Can be performed with high dimensional accuracy without deviation, and a wire harness with good quality can be manufactured. In addition, when the optional sub-harness is properly positioned on the first assembly workbench, the branching process and the attaching work of the protective material, which have been performed in the conventional post-process, can be performed in the pre-process. It also leads to the distribution of work load bias in the subsequent process.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the sub-harness and the electric wire bundle held by the electric wire holding portion can be prevented from slipping and suitably integrated with the electric wire fixture.
According to the fourth aspect of the invention, in addition to the effect of the third aspect, the common sub-harness is also properly positioned by the electric wire fixture, and can be easily and accurately overlapped with the optional sub-harness. .

It is a disassembled perspective view of an electric wire fixing tool. It is a perspective view of an electric wire fixing tool. It is a side view of an electric wire fixing tool. It is a perspective view which shows the assembly state of an option sub harness. It is a perspective view which shows the assembly state of an option sub harness. It is a perspective view which shows the fixed state of the option sub harness by an electric wire fixing tool. It is a perspective view which shows the extraction state of an option sub harness. It is a perspective view which shows the overlapping state of subharnesses. It is a perspective view which shows the overlapping state of subharnesses. It is a perspective view which shows the assembly state of a wire harness. It is a perspective view which shows the extraction state of a wire harness.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an example of the electric wire fixing tool of the present invention. The electric wire fixing tool (hereinafter simply referred to as “fixing tool”) 1 is made of a synthetic resin and a pair of square plates 2. 2 and a pair of projections 3 and 3 projecting opposite to each other at the intermediate portion of both sandwiching plates 2 and 2 can be pivoted around the pin 4 at a predetermined interval by being pivotally attached by the pin 4 Connected to However, a torsion spring 5 as an urging means is externally mounted on the pin 4 to urge the ends of the sandwiching plates 2 and 2 in the approaching direction.

Further, in the sandwiching plates 2 and 2, the concave grooves 6 are formed in the short direction on the mutually opposing surfaces on the front end side, and the both concave grooves 6 and 6 form an electric wire sandwiching portion 7 having an elliptical cross section. ing. Further, slits 8 are formed in the holding plate 2 at a portion near one end in the short direction from the tip to the longitudinal direction. The slit 8 overlaps vertically in a plan view, and has a width that allows a pair of support rods of an electric wire receiving jig, which will be described later, to penetrate perpendicularly.
And in the electric wire clamping part 7 isolate | separated by the slit 8, the rubber pad 9 as an elastic material is accommodated in the folded shape across the concave grooves 6 and 6 of both the clamping plates 2 and 2 on the wide side. Yes.

Next, a method for manufacturing a wire harness using the fixture 1 will be described.
The basic procedure is the same as that described in the background art above, using an assembly worktable corresponding to each of the common sub-harness and the optional sub-harness. Is performed (previous process). In addition, in the optional sub-harness assembly workbench (first assembly workbench), the wires constituting the portion not bound to the common sub-harness in the subsequent process are routed through the wire receiving jig, while the common sub-harness and The parts to be bound are assembled and bound in a state where they are suspended between two wire receiving jigs.

  FIG. 4 shows an example of an optional sub-harness assembly work table (first assembly work table) 10. Here, a U-shaped electric wire receiving jig in which a pair of support rods 12, 12 are projected upward. 11 is branched through the option sub-harness 13, and the work of connecting the connector 15 to the branch lines 14 and 14 is performed. Reference numeral 16 denotes a connector fixing jig erected on the assembly work table 10 in the same manner as the wire receiving jig 11.

  The wire receiving jig 11 is provided at two places (only one is shown in FIG. 4) which is a boundary between the binding portion and the non-binding portion with the common sub-harness. 1, with the base ends pressed against each other and opened between the ends, the support rods 12, 12 of the wire receiving jig 11 are inserted into the slit 8, and the wire holding portion 7 attaches the support rod 12 to the support rod 12. The adjacent optional sub harness 13 is clamped. Then, as shown in FIGS. 5 and 6, the optional sub-harness 13 is fixed to the wire receiving jig 11 that is a boundary position between the binding portion and the non-binding portion with the common sub-harness via the fixture 1. It will be. At this time, since the support rods 12, 12 penetrate perpendicularly into the slit 8 of the fixture 1, the fixture 1 does not shift in the longitudinal direction of the option sub-harness 13.

In a state where the boundary position is fixed by the fixing tool 1 in this manner, operations such as connecting the connector 15 to the terminal of the option sub-harness 13 are performed. Here, by fixing the optional sub-harness 13 to the electric wire receiving jig 11, the branch line 14 between each connector 15 can be stretched without loosening, and the workability is improved.
When the assembly of the option sub-harness 13 is completed, if the option sub-harness 13 is lifted together with the fixture 1, the option sub-harness 13 is pulled out together with the fixture 1 from the support rods 12 and 12, as shown in FIG. Can be removed from the assembly workbench 10. At this time, since the fixture 1 still holds the option sub-harness 13 with the electric wire clamping portion 7, the fixture 1 is not detached from the option sub-harness 13 or displaced.

  Then, as shown in FIG. 8, in the subsequent process, the assembled optional sub-harness 13 is transported to the assembly work table (second assembly work table) 20 of the common sub-harness 23 and set on the common sub-harness 23. To do. Here, an electric wire receiving jig 21 (only one of them is shown in FIG. 8) is provided at two boundary positions between the binding portion and the non-binding portion with the optional sub harness 13 in the common sub harness 23. The electric wire receiving jig 21 is also provided with the fixture 1 (hereinafter, when it is necessary to distinguish between them, the common sub-harness side is denoted as 1A and the optional sub-harness side is denoted as 1B), and the common sub-harness 23 is fixed. Assembly is performed in the state. Therefore, when the option sub-harness 13 is stacked, the support rods 22 and 22 are passed through the option sub-harness 13 from the lower side to the slit 8 of the fixing tool 1B on the option sub-harness 13 side, and placed on the fixing tool 1A. If they are stacked, they can be fixed to the wire receiving jig 21.

As shown in FIGS. 9 and 10, the optional sub-harness 13 and the common sub-harness 23 are connected to each other as shown in FIGS. 9 and 10 by overlapping the fixtures 1 </ b> A and 1 </ b> B and setting them on the same wire receiving jig 21. The overlapping is performed in a state where the boundary position with the non-binding portion is coincident. Therefore, a dimensional shift does not occur in the binding portions of both sub-harnesses.
In addition, when another optional sub-harness is to be stacked, if the support rods 22 and 22 are passed through the fixture 1 fixed to the option sub-harness from the bottom in the same manner, the option sub-harness can be used. The sub-harnesses can also be overlapped with the boundary position between the binding portion and the non-binding portion being matched.

After superimposing the sub-harnesses 13 and 23 in this way, the binding work can be performed by winding the tape 24 around the binding part of the optional sub-harness 13 and the common sub-harness 23.
When the assembly of the wire harness is completed, as shown in FIG. 11, the base ends of the fixtures 1 are pressed together to open the ends, and the sub-harness is released. If it slides so that 22 may be extracted, each fixing tool 1 can be removed from a subharness. Thereafter, the wire harness 25 may be extracted upward from the wire receiving jig 21.

  Thus, according to the fixing device 1 and the method of manufacturing the wire harness of the above-described form, the clip-shaped fixing device 1 that can be attached to and detached from the wire receiving jig while holding the sub-harness is used to The optional sub-harness 13 is assembled in a state where the optional sub-harness 13 supported by the jig 11 is sandwiched, and when being superimposed on the common sub-harness 23, the optional sub-harness 13 is fixed from the wire receiving jig 11 to the fixture 1. The fixture 1 is attached to the electric wire receiving jig 21 of the assembly work table 20 and the optional sub-harness 13 and the common sub-harness 23 are bound together. Even in the manufacturing process in which the sub-harnesses 23 are individually assembled in the pre-process and then overlapped and bundled in the post-process, Can be carried out with no high dimensional accuracy deviation superposition of the harness between, it is possible to produce a good wire harness in quality. In addition, when the optional sub-harness 13 is properly positioned on the assembly workbench 10, the branching process and the attaching work of the protective material, which are conventionally performed in the post-process, can be performed in the pre-process. This also leads to the distribution of work load bias in the subsequent process.

  In particular, here, in the assembly work table 20, the common sub-harness 23 supported by the wire receiving jig 21 at the boundary position is sandwiched between the fixtures 1A, and the optional sub-harness 13 is overlapped. At this time, since the fixing tool 1B on the option sub-harness 13 side is overlaid on the fixing tool 1A on the common sub-harness 23 side and attached to the electric wire receiving jig 21, the common sub-harness 23 is also attached to the fixing tool 1A. It is positioned appropriately and can be easily and accurately overlapped with the optional sub-harness 13.

  On the other hand, in the fixture 1, the rubber pad 9 is provided on the inner surface of the end portions of the clamping plates 2 and 2 that form the wire clamping portion 7, so that the sub-harness clamped by the wire clamping portion 7 is prevented from slipping. And can be suitably integrated.

Note that the fixing device is not limited to the above-described form. For example, the holding plate is rotatably connected by fitting the concaves and convexes instead of the pins, or another member such as a leaf spring is used as the biasing means, or the slit is held. It can be appropriately changed, such as being provided at the center in the width direction of the plate, or by providing a plurality of slits and selecting one of the slits to allow the support rod to be inserted and removed.
In addition, the left and right longitudinal dimensions of the sandwiching plate sandwiching the slit need not be the same, and it is sufficient that the opposite side of the wire sandwiching portion can be locked to at least the support rod near the sandwiching plate. It can be shorter than the side.
Furthermore, a separate rubber sheet may be attached to the inner surface as an elastic material used for the inner surface of the electric wire clamping part, or such an elastic material is eliminated to form an uneven surface and teeth on the inner surface to prevent slipping. You may plan.

  On the other hand, in the method of manufacturing the wire harness, in the above embodiment, the fixture is also used at the boundary position between the binding portion and the non-binding portion in the common sub-harness. You may make it use a fixing tool only in the boundary position of a binding part and a non-binding part. In this case, the boundary position of the common sub-harness is supported only by the electric wire receiving jig. However, since the boundary position is reliably positioned by the optional sub-harness, the dimensional accuracy at the time of superposition can be maintained.

  1 .. Electric wire fixing device 2 .. Clamping plate 3 .. Projection 4 .. Pin 6 .. Recessed groove 7 .. Electric wire clamping part 8 .. Slit 9.・ Assembly worktables 11, 21 ・ ・ Wire receiving jigs, 12, 22 ・ ・ Support rods, 13 ・ ・ Optional sub-harnesses, 14 ・ ・ Branch wires, 15 ・ ・ Connectors, 23 ・ ・ Common sub-harnesses, 24 ・・ Tape, 25 ・ ・ Wire harness.

Claims (4)

  A pair of sandwiching plates that are rotatably coupled to each other at a predetermined interval, biasing means that rotationally biases the ends of the sandwiching plates toward each other, and ends of the sandwiching plates A wire holding part formed between the inner surfaces of the part, and a slit formed at the end of the holding plate so that the wire receiving jig erected on the assembly work table of the wire harness can pass through in an intersecting manner, An electric wire fixture that can be attached to and detached from the electric wire receiving jig while holding the electric wire supported by the electric wire receiving jig by the electric wire holding portion.   The wire fixing tool according to claim 1, wherein an elastic material is provided on an inner surface of an end portion of the holding plate that forms the wire holding portion. Of the wire harness formed by binding the common sub-harness forming the base circuit and the optional sub-harness forming the optional circuit, the optional sub-harness is connected to the common sub-harness and the non-bundled portion. While assembling in the first assembly work table in which the wire receiving jig is erected at the boundary position, the common sub harness is erected at the boundary position between the binding portion and the non-binding portion with the optional sub harness. A method of manufacturing a wire harness that is assembled on a second assembly workbench provided and the assembled optional subharness is overlapped with the common subharness assembled on the second assembly workbench to bind the binding parts together Because
In the first assembly work table, the optional sub-harness is assembled in a state where the optional sub-harness supported by the electric wire receiving jig at the boundary position is sandwiched between the electric wire fixtures according to claim 1 or 2, When overlapping the common sub-harness, the optional sub-harness is removed from the electric wire receiving jig of the first assembly work table together with the electric wire fixture, and the electric wire fixture is removed from the second sub-harness. A method for manufacturing a wire harness, wherein the option sub-harness and a common sub-harness are bound together by being attached to the wire receiving jig at the boundary position in an assembly work table.   In the second assembly workbench, the common subharness supported by the wire receiving jig at the boundary position is assembled with the common subharness sandwiched by the wire fixture according to claim 1 or 2, When the optional sub-harness is overlapped, the electric wire fixture on the optional sub-harness side is overlaid on the electric wire fixture on the common sub-harness side and attached to the electric wire receiving jig. Item 4. A method for manufacturing a wire harness according to Item 3.

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