JP3428384B2 - Method and apparatus for manufacturing wire harness - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to, for example, OA equipment,
The present invention relates to a method and an apparatus for manufacturing a wire harness used for home electric appliances or internal wiring of an automobile.

[0002]

2. Description of the Related Art Conventionally, as a wiring harness for electric wiring installed in an office automation equipment, a home electric appliance or an automobile, a CPU, a display device and various kinds of wiring harnesses are conventionally used as shown in FIG. There is a structure in which a plurality of electric wires 1 for connecting the switch parts and the like are bundled into a substantially cylindrical shape. When manufacturing this type of wire harness, metal fittings and jigs for holding the connector 3 and the electric wire 1 are attached in a flat plate shape according to the actual wiring, and after the electric wire 1 is manually crawled, A protective adhesive tape 2 is wrapped around the electric wire 1, and a case of a resin molded product (not shown) is externally attached to maintain a certain shape, and then the interior of an OA device, an electric home appliance, an automobile, or the like to be attached is attached. It was installed so as to correspond to the installation form (1st
Conventional example). However, in the first conventional example, since the adhesive tape 2 is wound around the electric wire 1 after the electric wire 1 is manually crawled at the time of manufacturing, the winding of the adhesive tape 2 after the electric wire 1 is crawled. It took a lot of time and the work efficiency was poor.

Further, as shown in, for example, FIGS. 35 and 36 (second conventional example), conductive paths 4 are printed in a pattern on a flexible base film 5 and a cover film 6 is laminated thereon. Multi-pole / planar wiring such as flexible printed wiring (FPC) is also known. However, in the case of a complicated wire harness in which the conductive path 4 has a bent portion, as shown in FIG. 36, an etching mask is performed for each pattern in the manufacturing process, and a pattern is formed on the large-area base film Dk. After that, since it was cut with a punching die, a large-scale device such as an etching device and a cutting device is required. Moreover, since a large area base film Dk is used, a large work space is required, resulting in poor space efficiency.

Further, as shown in FIG. 37, a method of arranging a plurality of belt-shaped conductors 8 in a straight line in parallel, laminating the upper and lower sides thereof with films 5 and 6, and then bending them according to a routing route. There was also a (third conventional example). With this method, various devices required for the second conventional example can be omitted.
However, the wire harness of the third conventional example has a bent portion 9
38 is damaged, or the laminated portion is deformed so as to separate due to the elastic restoration of the bent portion 9 as shown in FIG. 38, which causes a problem that the shape of the wire harness is not stable with respect to the wiring route. Was there.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a wire harness manufacturing method and a wire harness manufacturing method which are excellent in space efficiency and can be manufactured easily and efficiently with a simple device.

[0006]

The technical means of the manufacturing method for solving the above-mentioned problems is to supply a plurality of electric wires in a substantially straight line and in a substantially parallel manner to a connector pressure contact portion located on the upstream side in the electric wire supply direction. Then, an electric wire crimping step of crimping each electric wire to the connector set in the connector crimping portion, the connector in which each electric wire is crimped, is moved and fixed to the connector fixing portion located on the downstream side in the electric wire supply direction, A connector moving and fixing step of arranging the electric wires in a substantially linear shape and in a substantially parallel manner from the upstream side to the downstream side, and an electric wire length adjusting jig having electric wire positioning means formed at a predetermined gradient is pressed against the electric wires and moved. Circuit length adjustment process to set different size slack for each wire, and press-connect cutting to connect each wire to the connector set in the connector press-connecting part and cut each wire upstream of the connector. Lies in comprising a step.

Further, an electric wire lifting step of lifting each of the electric wires upward by an electric wire lifting jig which is arranged slightly downstream of the connector press-contacting portion position, and a connector press-contacting operation in which each electric wire is lifted. The method may further include a connector setting step of setting at least one connector in the section.

Further, the method may further comprise a lifting release step of releasing the lifting of the electric wire by the wire lifting jig after the circuit length adjusting step and before the pressure contact cutting step.

In the connector pressure contact portion, two connectors can be set along the wire supply direction, and in the pressure contact cutting step, the respective wires are pressure contacted with the connector at the rear end portion of the downstream side wire harness. A method may be used in which each electric wire is pressed against the connector at the front end portion of the upstream side wire harness, and each electric wire is cut between the pressure contact positions of both connectors.

Further, an electric wire fixing and holding step of fixing and holding each electric wire after the connector moving and fixing step is carried out by the electric wire fixing jig arranged slightly upstream of the connector fixing portion position in the circuit length adjusting step. A method provided as a pre-process may be used.

The circuit length adjusting step may be repeated a plurality of times at different positions of the wire along the wire feeding direction.

Further, the electric wire positioning means may be a step or a recess.

Further, as a pre-step of the circuit length adjusting step, a connecting sheet member is provided across adjacent electric wires which are arranged substantially linearly and substantially parallel to each other, which are located on the downstream side of the position where the electric wire length adjusting jig is pressed. And connecting each electric wire to each other, and fixing the electric wires on the downstream side, and /
Alternatively, as a post-step of the circuit length adjusting step and lifting release step, the wires are connected across the adjacent electric wires that are arranged substantially linearly and substantially parallel to each other, which are located upstream from the position where the most upstream side electric wire length adjusting jig is pressed. The method may further include an upstream electric wire portion fixing step of mounting the sheet member and connecting and fixing the electric wires to each other.

Further, the technical means of the manufacturing apparatus for solving the above-mentioned problems are an electric wire supply section for supplying a plurality of electric wires, and a wiring mount for arranging the plurality of electric wires in a substantially linear shape.
Arranged on the upstream side in the wire feeding direction in the wiring mount,
From the connector pressure contact portion, a connector pressure contact portion for pressure contacting each electric wire to the set connector, a connector fixing portion arranged on the downstream side in the electric wire supply direction in the wiring rack and fixing the connector to which each electric wire pressure contact is applied, and the connector pressure contact portion position. It is arranged on the slightly downstream side and is arranged between the electric wire lifting portion that lifts each electric wire upward, and between the connector fixing portion and the electric wire lifting portion, and presses against the electric wire on the wiring frame to each electric wire. And a circuit length adjusting section having an electric wire length adjusting jig formed with electric wire positioning means having a predetermined gradient for abutting so as to set slacks of different sizes.

A structure may further be provided with a line aligning section for aligning the plurality of electric wires supplied from the electric wire supplying section substantially in parallel.

Further, the electric wire positioning means may have a step or a recess.

Further, the connector press-contacting portion can be set with two connectors along the electric wire supply direction, and each connector is provided with a press-connecting jig for press-connecting each electric wire, and between the press-connecting positions of both connectors. At least 1 to cut the wire
The structure may be provided with two electric wire cutting blades.

Further, the structure may further include an electric wire fixing portion which is arranged between the connector fixing portion and the circuit length adjusting portion and has an electric wire fixing jig for fixing and holding each electric wire.

Also, the connector fixing portion, the circuit length adjusting portion, and the connector pressure contact portion are mounted so that the connecting sheet member is mounted over the electric wires arranged in a straight line and parallel to each other to connect and fix the adjacent electric wires to each other. The structure may further include a seat member mounting portion provided between the two.

[0020]

1 is a view showing an example of a wire harness manufactured according to an embodiment of the present invention. In this wire harness, a plurality of electric wires 11 are arranged on the same plane at substantially equal intervals and substantially in parallel, and a part of these is fixed to two wiring insulating tapes 12 or holding means (for example, insulating coating of the electric wires 11). Or soldering or adhering the sheath, sandwiching it with clamps, clips, etc., or insulating tape 1
By fixing 2 from one side surface, the electric wires 11 are at least partially fixed to each other, and a local portion (hereinafter referred to as a “curved portion”) is provided in order to cope with a complicated wiring route that particularly requires a bent portion. (Referred to as 13) has a structure in which all electric wires 11 are curved in a substantially concentric arc shape with a substantially constant gap therebetween.

The curved portion 13 may also be fixed by the insulating tape 12, but here the fixing of the insulating tape 12 at the curved portion 13 is omitted as shown in FIG. 1 for convenience of manufacturing. Further, each electric wire 11 uses a covered electric wire covered with an insulating film. In addition, in this embodiment, an example in which four electric wires 11 are arranged is shown. However, as long as the electric wires 11 are arranged on the same plane at least within a predetermined tolerance, preferably at substantially equal intervals, the electric wires 11 are substantially parallel to each other. The quantity is not limited to four. Further, the electric wires 11 do not have to be arranged at equal intervals.

FIG. 2 is a view showing a state where the axial direction of each electric wire 11 in the bending portion 13 is changed by a bending angle ε of 90 °. In the bending portion 13 of the wire harness, since the electric wires 11 (11a to 11d) are arranged at a constant distance w apart from each other, their lengths must all be set differently.

Here, the distance between the electric wires 11a to 11d is w, and the radii of curvature are w, 2w, 3w, and 4w, respectively.
In that case, each of the electric wires 11a to 11d in the bending portion 13
The lengths L1, L2, L3, and L4 of are the lengths of a quarter of the circumference for each radius of curvature. Therefore, L1 = (2π · w) / 4 = πw / 2 L2 = (2π · 2w) / 4 = πw L3 = (2π · 3w) / 4 = 3πw / 2 L4 = (2π · 4w) / 4 = 2πw. The deviation of the lengths of the electric wires 11 adjacent to each other is L2-L1 = (πw)-(πw / 2) = πw / 2 L3-L2 = (3πw / 2)-(πw) = πw / 2 L4- L3 = (2πw) − (3πw / 2) = πw / 2. In this way, the length deviation (πw / 2) must be set between the adjacent electric wires 11, and as a method therefor, the electric wires 11 are handled according to the routing route as in the first conventional example. The electric wires 11 are arranged by a work or using a jig such as a mold.
There is also a method of adjusting the shape of, but the work efficiency and space efficiency are poor. Therefore, in this embodiment, after the electric wires 11 are installed in a substantially straight line shape and substantially parallel to each other as shown by broken lines in FIG. 3, as shown in FIGS.
For each constant width (w) of 11d, especially corresponding to the difference in wire length,
An electric wire length adjusting jig 14 having a recess, groove or step 15 (which constitutes electric wire positioning means) having a constant height (ΔH) depending on the shape of the jig tip is used. By pressing each step 15 of the above-mentioned step 15 against each electric wire 11 and linearly pushing it down, and slackening each electric wire 11 by a predetermined size, each electric wire 11a-1
1d is adjusted to an appropriate length suitable for the bending portion 13. Each step 15 of the wire length adjusting jig 14 is preferably formed in a substantially arcuate, triangular or chamfered concave shape so as to prevent the wires 11a to 11d from coming off.

As the manufacturing apparatus for this wire harness, the apparatus shown in FIGS. 8 to 14 is used. This manufacturing apparatus has a plurality of electric wire supply drums 20, and in particular, an electric wire supply unit 21 that supplies the electric wires 11 simultaneously and individually, and a predetermined separation width (w) of the supplied electric wires 11 are aligned. Line aligning part 23 having a line aligning jig 22 in which a groove 22a for forming is provided, a wire installation stand 24 linearly arranged along an electric wire supply direction P supplied through the line aligning part 23, and a wiring A general connector pressure contact portion 26 arranged on the upstream side or upstream side of the electric wire supply direction P in the gantry 24 and press-connecting each electric wire 11 to the set predetermined connector 25, and a downstream side of the electric wire supply direction P in the wiring gantry 24. Alternatively, the connector fixing portion 27 is arranged in the downstream portion and releasably fixes the connector 25, and is arranged slightly downstream from the position of the connector pressure contact portion 26 in the electric wire supply direction P and pushes up each electric wire 11 from below. Lifting the respective wires 11 upwardly Te wire lifting unit 28 having a wire lifting jig 28a
And a circuit length adjusting unit 29 arranged between the electric wire lifting unit 28 and the connector fixing unit 27 and adjusting the length of each electric wire 11 (11a to 11d) using the electric wire length adjusting jig 14 described above. ing.

The length Ln of the curved portion 13 of the n-th electric wire of the plurality of electric wires 11 is defined by the opening 30 of the n-th electric wire 11.
(See FIG. 5) Corresponding to the height hn of the recessed portion or the step 15 pushed in, this height hn is the reference height 14h (see FIG. 4), and the height ΔHn of the n-th step is calculated by the following formula. Represented.

[0026]

[Equation 1]

However, when the electric wires 11 are arranged at one bending angle ε, it is preferable that the heights ΔHn are all the same. If the wires are arranged with two or more bending angles ε1, ε2, ε3, etc., the height ΔHn of the step 15 is preferably equal for each wire group (eg as shown in FIG. 32 and described below). .

By assuming the geometrical dimensions shown in the schematic diagrams of FIGS. 6 and 7, the relationship between the height hn of the nth step 15 and the length Ln of the nth wire can be roughly estimated. . When b is the thickness of the wire length adjusting jig 14 along the length direction of the wire 11 and a is the width of the opening 30 along the same direction, the length Ln is approximated by the following equation.

[0029]

[Equation 2]

Therefore, the height hn of the n-th step is approximately represented by the following equation.

[0031]

[Equation 3]

As shown in FIG. 7, the electric wire is bent, that is, b is brought close to 0 and the limit value is taken to obtain the height h.
The formula for obtaining n can be further simplified as follows.

[0033]

[Equation 4]

This equation should be adopted when n is 3, preferably 4 or more. This is because when n is smaller than this, the deviation becomes too large, and thus the accuracy of the wiring may fall below a predetermined error level.

Preferably, in order to avoid damage or breakage of the electric wire 11 and to reduce deviations or errors when calculating the height hn of the step 15 by the above simplified formula as shown in FIG. In addition, the tip portion 15r of the concave portion or the step 15 may be rounded as shown by an imaginary line in FIG. Further, the edge portion 24r in the opening 30 of the wiring mount 24 may be rounded in order to prevent the electric wire 11 from being damaged or broken when the electric wire length adjusting jig 14 is inserted into the opening 30, and to bend the electric wire 11 smoothly. (See Figure 6).

Furthermore, the opening 30 is provided between the edge of the opening 30 of the wiring mount 24 and the wire length adjusting jig 14 so that the wire 11 is not broken or damaged when the wire length adjusting jig 14 is inserted. Wire length adjustment jig 1 when the gap is too small
It must have a width a so that it is not pinched by the edges of 4 and / or is not bent or damaged by being strongly bent. That is, for example, in the opening 30, the wire length adjusting jig 14 can be loosely fitted or inserted into the opening 30 in a state where the electric wire 11 is arranged so as not to be damaged or broken by pinching, buckling, strong bending, or the like. It has an appropriate width a along the wire supply direction P or the length direction of the wire 11.

Furthermore, the steps 15, recesses or chamfers may be spaced according to the distance or pitch between the wires 11. In FIGS. 4 and 5, the distance w between the electric wires 11 is
Are the same for all wires 11 and therefore the corresponding steps 15 are evenly spaced. If the electric wires 11 are not opened at equal intervals (not shown), the step 1
Therefore, 5 is not opened at equal intervals. That is, the step 15, the concave portion or the chamfered portion is formed so as to correspond to the position of the electric wire 11 to be displaced. Preferably, the wire length adjusting jig 14 is formed to have an inclined side portion, and the step 15 is formed on the inclined side portion according to the corresponding position of the electric wire 11 displaced.

As shown in FIG. 5 and as described above, the circuit length adjusting section 29 pushes down the wire length adjusting jig 14 with respect to the electric wire 11 and pushes the electric wire 11 to the central portion of the top surface of the wiring mount 24. The structure has an opening 30 for loosening.

The connector press-contact portion 26, the connector fixing portion 27, the electric wire lifting portion 28, and the circuit length adjusting portion 29 are provided on the continuous wiring mount 24. The connector press-contact portion 26 and the like are shown. Alternatively, each of the divided wiring mounts may be an independent unit, and the divided wiring mounts constituting the wiring mount 24 may have a structure in which the distance between them can be adjusted.

Further, the connector press-contact portion 26 can be set with two connectors 25 along the wire supply direction P, and is provided with a press-contact jig 26a for press-connecting each wire 11 to each connector 25. An electric wire cutting blade 26b for cutting each electric wire 11 between the press-contacting positions of both connectors 25 is provided.

Further, the circuit length adjusting section 29 is provided in two places.

As the electric wire lifting jig 28a, for example, a supporting frame is provided with a roller having a U groove or a V groove corresponding to each electric wire 11 position so as to be rollable, and the supporting frame is vertically moved. It may be structured. Further, the roller may have a structure in which a plurality of rollers are arranged independently corresponding to each electric wire 11 or a fixed bar in which a groove having a small friction coefficient is formed.

Next, a method of manufacturing the wire harness according to the first embodiment of the present invention using this manufacturing apparatus will be described.

First, as shown in FIG. 9, a predetermined connector 25 is set in the connector pressure contact portion 26, and a plurality of electric wire supplying drums 20 of the electric wire supplying portion 21 are connected to the electric wires 11.
Respectively, and passes through each groove 22a in the line alignment jig 22 of the line alignment part 23 and has a predetermined separation width w for each electric wire 11 (the intervals are equal intervals or at least fall within a predetermined tolerance). Is set), each electric wire 11 is guided to a predetermined position of the set connector 25, and each electric wire 11 is connected to the connector 25 by a pressure welding jig 26a.
Press contact with each wire pressure contact blade (wire pressure contact step).

Next, as shown by the phantom lines in FIG. 9, the connector 25 to which the respective electric wires 11 are pressed is moved and fixed to the connector fixing portion 27 located on the downstream side of the electric wire supply direction P, and the respective electric wires are fixed. 11 is arranged on the upper surface side of the wiring pedestal 24 in a substantially linear shape and in parallel from the upstream side to the downstream side of the electric wire supply direction P (connector moving and fixing step).

Thereafter, as shown in FIG. 10, the electric wire lifting jig 28a arranged in the electric wire lifting portion 28 is pushed up to lift each electric wire 11 upward (electric wire lifting step).

Then, in a state in which each of the electric wires 11 is lifted, a new connector 25 is attached to the connector pressure contact portion 26.
Set them in parallel (connector setting process). At this time, the connector 25 located on the downstream side of the electric wire supply direction P is
The connector 25 that is paired with the connector 25 fixed to the connector fixing portion 27 and that is located on the upstream side of the electric wire supply direction P is the connector 25 of the wire harness to be manufactured next.
Becomes

Next, as shown in FIGS. 5, 11 and 12, a wire length adjusting jig is applied to each wire 11 (11a to 11d) arranged across the opening 30 of the wiring mount 24. The steps 15 of 14 are brought into contact with each other and pushed down by a predetermined dimension as they are to loosen each of the electric wires 11a to 11d by a predetermined dimension corresponding to the step 15 (circuit length adjusting step). At this time, the electric wire 11 is supplied from each of the electric wire supply drums 20 by the loosened size.

Further, the adjustment of the circuit length for setting the slack of different size for each electric wire 11 by the electric wire length adjusting jig 14 may be carried out plural times, and preferably the circuit located on the downstream side of the electric wire supply direction P. This is sequentially performed from the length adjusting unit 29 side.

The wire length adjusting jig 14 may be automatically pushed down by using an elevating device which is electrically or electronically controlled, or may be pushed down manually by an operator.

Next, as shown in FIG. 13, the electric wire lifting jig 28a is operated to descend, the lifting of each electric wire 11 is canceled (lifting cancellation step), each electric wire 11 descends, and each electric wire 11 is a connector. The electric wires of the connectors 25 set in the press-contact portion 26 are aligned on the wire press-contact blades. afterwards,
Each press-connecting jig 26a corresponding to each connector 25 is operated to be lowered, so that each electric wire 11 is press-contacted to each wire press-connecting blade of each connector 25. After this or at the same time, the electric wire cutting blades 26b corresponding to the respective connectors 25 are lowered,
Each electric wire 11 is cut between the pressure contact positions of both connectors 25 (pressure contact cutting step). Here, the wire harnesses located on the downstream side and the upstream side of the electric wire supply direction P are separated from each other.

After that, as shown in FIG. 14, the downstream wire harness after the adjustment of the circuit length and the pressure contact of the connector 25 at the terminal is recovered from the wiring mount 24 (wire recovery step). When collecting the wire harness, the insulating tape 12 is provided with a portion of each wire 11 arranged in parallel on the wiring mount 24, that is, a portion arranged between the connector and the opening 30 or between two or more openings 30. Or holding means (clamps, clips,
It may be a method of fixing with a solder, an adhesive, etc.) or a method of fixing with an insulating tape 12 after collecting the wire harness.

Then, the connector 25 is left in the connector pressure contact portion 26 in the state where the wire pressure contact step is completed, and the circuit length necessary for bending mounting is obtained by sequentially repeating the steps after the connector moving and fixing step. The wire harness in which the difference is previously provided is sequentially assembled.

Further, as shown in FIG. 15, each electric wire is provided between the connector fixing portion 27 and the circuit length adjusting portion 29 on the downstream side of the electric wire feeding direction P and slightly upstream of the position of the connector fixing portion 27. An electric wire fixing part having an electric wire fixing jig 34 for releasably sandwiching and holding 11 fixedly from above and below, and particularly for releasably positioning the electric wire 11 at a predetermined position along the supply direction P and / or a direction substantially perpendicular thereto. The structure may include 35.

In this case, after the connector moving and fixing step,
After the electric wire lifting step or the connector setting step, each electric wire 11 is fixed and held by the electric wire fixing jig 34 (electric wire fixing and holding step), and the circuit length adjusting step is performed in this state.

That is, when adjusting the circuit length in the circuit length adjusting step, each wire 11 is pushed down by the wire length adjusting jig 14 to set the slack of a predetermined dimension.
Tension acts on each of them individually. Therefore, this tension is fixed to the connector fixing portion 27 of the connector 2
5, when it acts on the wire pressure contact portion 25a, the wire pressure contact blade 25b
It acts as a force in the pulling-out direction on the electric wire conductor of the electric wire 11 that is pressed into contact with the electric wire, which may lead to a decrease in contact stability.

However, if the method of performing the wire fixing and holding step as a step prior to the circuit length adjusting step is adopted, each wire 11
Is fixed and held by the wire fixing jig 34, the tension generated in the wire 11 at the time of adjusting the circuit length does not act on the wire pressure contact portion 25a of the connector 25 fixed to the connector fixing portion 27, resulting in good contact stability. Can be secured.

The electric wire fixing jig 34 for holding and holding each electric wire 11 in a sandwiched manner by pressing is attached to the facing portion 34a made of a flexible material such as rubber elastomer. The structure is particularly preferable from the viewpoint of preventing damage, but it may be an integral member such as metal or plastic whose edges are chamfered.

In addition, the electric wire 11 by each electric wire fixing jig 34
The fixed holding may be released after the circuit length adjusting step is completed.

In the bending portion 13, for example, as shown in FIG.
And as shown in FIG. 17, when it is desired to change the axial direction of each electric wire 11 by a bending angle ε of 45 °, the separation width of each electric wire 11a to 11d is w, and the radii of curvature are w, 2w, 3w, respectively. In the case of 4 w, the lengths L1, L2, L3, L4 of the electric wires 11a to 11d in the bending portion 13
Is 1/8 the length of the circumference for each radius of curvature, so L1 = (2π · w) / 8 = πw / 4 L2 = (2π · 2w) / 8 = πw / 2 L3 = (2π · 3w) / 8 = 3πw / 4 L4 = (2π · 4w) / 8 = πw. In general, the length is the formula Li = (2π · i · w) · ε
[°] / 360 ° (where ε is the bending angle or curvature of the electric wire 11 (FIG. 2)). The deviation of the lengths of the electric wires 11 adjacent to each other is L2-L1 = (πw / 2)-(πw / 4) = πw / 4 L3-L2 = (3πw / 4)-(πw / 2) = πw / 4 Since L4−L3 = (πw) − (3πw / 4) = πw / 4, the wire length adjusting jig 14 corresponds to the deviation.
The height (ΔH) of the step 15 may be set. Specifically, assuming that the gradient of the step 15 of the wire length adjusting jig 14 is θ (FIG. 4) when the bending angle ε of each wire 11 at the bending portion 13 is 90 °, each of the steps shown in FIG. When the bending angle ε of the electric wire 11 is 45 °, the gradient of the step 15 of the electric wire length adjusting jig 14 is set to θ / 2 as shown in FIG. Thus, the inclination of the step 15 of the wire length adjusting jig 14 is (θ × ε / 90 °) with respect to the bending angle ε of the wire 11.
You can set it to. The slope 15 of the step 15 or the concave portion of the wire length adjusting jig 14 is sufficiently distant from the center of curvature of the wire 1.
1, i.e., a sufficiently large step, preferably a step 15 corresponding to an electric wire 11 of n of 4 or more is preferably set constant.

In general, the bending angle ε of the electric wire 11 and the electric wire 1
The length of the nth wire to obtain a spacing w of 1 is given by the following equation (assuming the wire is bent along an arc):

[0062]

[Equation 5]

Therefore, the difference in length between adjacent electric wires is generally expressed by the following equation.

[0064]

[Equation 6]

If the curved portion 13 of the electric wire 11 does not follow an arc, both of the above equations can be adopted only as approximate equations. However, the invention is not so limited. The gradient θ of the step 15 may be constant when n is sufficiently large, for example, 4 or more.

As described above, the wire length adjusting jig 1 having the step 15 after the wires 11a to 11d are arranged in a substantially linear shape
4 with respect to the electric wire 11 at an angle other than 0 ° or 180 °, preferably substantially linearly pushing down the electric wires 11a to 11d to move the electric wires 11a to 11d.
Since it can be adjusted to an appropriate length suitable for No. 3, it can be installed in a short time without requiring a working space and without bending as in the third conventional example. .

If there are three or more bending portions 13, the circuit length adjusting portion 29 may be added depending on the number of the bending portions 13. In addition, when there are a plurality of bending portions 13,
When changing the distance between the curved portions 13, the connector pressure contact portion 26, the circuit length adjusting portion 29, and the connector fixing portion 27.
The interval between them may be appropriately changed according to the purpose.

Further, in FIG. 1, the electric wire 1 in which slack is set
Although the example in which 1 is arranged on the same plane is shown, it is needless to say that the wires may be bent three-dimensionally and arranged.

Next, a second embodiment of the present invention will be described with reference to FIGS. 19 to 28. In addition, the same reference numerals are given to the same members.

The wire harness manufactured is the second
In the same manner as in the above embodiment, a plurality of electric wires 11 are arranged on the same plane at substantially equal intervals and substantially in parallel, and a part of them is sandwiched between two insulating tapes 12 as connection sheet members for fixing wiring, or The electric wires 11 are fixed to each other by adhering the insulating tape 12 from one side surface,
In particular, in order to cope with a complicated wiring route that requires a bent portion, the bending portion 13 has a structure in which all the electric wires 11 are curved in a substantially concentric arc shape with a substantially constant gap therebetween.

The insulating tape 12 also has a function of keeping the electric wires 11 in a straight line at equal intervals.

In this case, each electric wire 11 is a covered electric wire covered with an insulating material such as polyvinyl chloride or polyethylene, and the insulating tape 12 is a resin film such as polyethylene, polypropylene, polyimide or vinyl chloride. To be done. In addition, the electric wire 11 and the insulating tape 12 are adhered to each other by a thermoplastic adhesive such as natural or synthetic rubber, butyl rubber, vinyl acetate-based, polyvinyl acetal-based, acrylic-based, vinyl ether-based adhesive (including those having room-temperature adhesiveness). To use. Further, if necessary, a cyano instant adhesive or an ultraviolet curable adhesive may be used. In this embodiment, an example in which four electric wires 11 are arranged is shown, but the number is not limited to four as long as the electric wires 11 are arranged in parallel on the same plane at equal intervals. Alternatively, instead of the insulating tape 12 or in addition thereto, a fixing means such as a clamp, a clip or the like may be used.

Further, in this embodiment, between the connector pressure contact portion 26 and the circuit length adjusting portion 29 on the upstream side of the electric wire supply direction P, between each circuit length adjusting portion 29, and the circuit length on the downstream side of the electric wire supply direction P. Between the adjusting part 29 and the connector fixing part 27, one or more sheet member mounting parts 31 for mounting the insulating tape 12 over the respective electric wires 11 arranged linearly and parallel to each other are provided. There is.

When the insulating tape 12 is adhered to the sheet member mounting portion 31 using a thermoplastic adhesive as shown in FIGS. 29 and 30, for example, the insulating tape 12 coated with the thermoplastic adhesive is used. Is placed over each electric wire 11, and the press plate 3 having a shape corresponding to the area where the insulating tape 12 is attached.
1a, the press plate 31a is pressure-bonded while being heated to the melting temperature of the adhesive, or an insulating tape 12 coated with a thermoplastic adhesive is placed over each electric wire 11, The press roller 31b heated to the melting temperature may be pressure-bonded while rotating in a predetermined direction.

29 and 30, the press plate 31a and the press roller 31b are arranged only on the insulating tape 12 side, but the press plate 31a and the press roller 31b are arranged on the upper and lower sides. Further, the insulating tape 12 may be arranged on both sides of each electric wire 11 and the electric wires 11 may be adhered in a manner of sandwiching the electric wire 11 from above and below.

Next, a method of manufacturing a wire harness using this manufacturing apparatus will be described.

First, as shown in FIG. 20, a predetermined connector 25 is set in the connector pressure contact portion 26, and at the same time,
From the plurality of electric wire supply drums 20 of the electric wire supply unit 21 to the electric wire 1
1 is supplied to each wire 11 and each wire 11 is passed through each groove 22a in the wire alignment jig 22 to set a predetermined separation width w for each wire 11, and each wire 11 is connected to the predetermined connector 25 of the set. The electric wire 11 is guided to a position, and each electric wire 11 is pressed against each electric wire pressing blade of the connector 25 by the pressing jig 26a (electric wire pressing step).

Next, as shown by the phantom lines in FIG. 20, the connector 25 to which the respective electric wires 11 are pressed is moved and fixed to the connector fixing portion 27 located on the downstream side of the electric wire supply direction P, and the respective electric wires are fixed. 11 is arranged linearly and in parallel from the upstream side to the downstream side of the electric wire supply direction P on the upper surface side of the wiring mount 24 (connector moving and fixing step).

After that, as shown in FIG. 21, the electric wire lifting jig 28a arranged in the electric wire lifting portion 28 is pushed up to lift each electric wire 11 upward (electric wire lifting step).

Then, with each electric wire 11 being lifted, a new connector 25 is attached to the connector press-contact portion 26.
Set them in parallel (connector setting process). At this time, the connector 25 located on the downstream side of the electric wire supply direction P is
The connector 25 that is paired with the connector 25 fixed to the connector fixing portion 27 and that is located on the upstream side of the electric wire supply direction P is the connector 25 of the wire harness to be manufactured next.
Becomes

Next, as shown in FIG. 22, a sheet member of a portion in which each electric wire 11 located between the connector fixing portion 27 and the downstream circuit length adjusting portion 29 is linearly and parallelly arranged. The insulating tape 12 is mounted by the mounting portion 31, and the electric wires 11 are connected and fixed to each other (downstream sheet member mounting step as a downstream electric wire portion fixing step).

Next, as shown in FIG. 23, in the circuit length adjusting section 29 on the downstream side, for each electric wire 11 (11a to 11d) arranged across the opening 30 of the wiring rack 24, The step 15 of the wire length adjusting jig 14 is brought into contact with the wire, and is pressed down by a predetermined dimension as it is to loosen each of the wires 11a to 11d by a size corresponding to the step 15 (circuit length adjusting step). At this time, each wire supply drum 20 is only loosened
The electric wire 11 is supplied from. Here, a slack of a different size is set for each electric wire 11.

The wire length adjusting jig 14 is similar to the above.
It may be pushed down automatically using an electrically controlled lifting device, or it may be pushed down manually by the operator.

Next, as shown in FIG. 24, the circuit length adjusting unit 29 on the downstream side where the circuit length is adjusted and the circuit length adjusting unit 29 on the upstream side where the circuit length is not adjusted are arranged. The insulating tapes 12 are respectively mounted at the sheet member mounting portions 31 of the portions in which the respective electric wires 11 located between them are linearly and parallelly arranged, and the respective electric wires 11 are connected and fixed to each other (downstream side sheet member mounting step). .

Next, as shown in FIG. 25, in the upstream circuit length adjusting section 29, each of the electric wires 11 (11a to 1a) arranged across the opening 30 of the wiring installation stand 24 as described above.
1d), the step 15 of the electric wire length adjusting jig 14 is brought into contact with the electric wire 11a, and the electric wire 11a is pushed down by a predetermined size.
11d is loosened by a dimension corresponding to the step 15 (circuit length adjusting step).

Next, as shown in FIG. 26, the electric wire lifting jig 28a is operated to be lowered, the lifting of each electric wire 11 is released, each electric wire 11 is lowered, and each electric wire 11 is set on the connector pressure contact portion 26. The connectors 25 are aligned on the wire press contact blades (lifting release step).

After that, the seat member is attached to the portion where the electric wires 11 located between the upstream circuit length adjusting portion 29 where the circuit length is adjusted and the electric wire lifting portion 28 are arranged linearly and in parallel. At the portion 31, the insulating tape 12 is attached, and the electric wires 11 are connected and fixed to each other (upstream sheet member attaching step as the upstream electric wire portion fixing step).

Next, as shown in FIG. 27, the respective pressure welding jigs 26a corresponding to the respective connectors 25 are lowered,
Each electric wire 11 is pressed against each electric wire pressing blade of each connector 25. After this or at the same time, the electric wire cutting blades 26b corresponding to the respective connectors 25 are operated to descend, and the electric wires 1
1 is cut between the pressure contact positions of both connectors 25 (pressure contact cutting step). Here, the wire harnesses located on the downstream side and the upstream side of the electric wire supply direction P are separated from each other.

After that, as shown in FIG. 28, the downstream wire harness after the adjustment of the circuit length and the pressure contact of the connector 25 at the terminal is recovered from the wiring mount 24 (wire recovery step).

The connector 25 is left in the connector pressure contact portion 26 in the state where the wire pressure contact step is completed, and the circuit length required for bending mounting is repeated by sequentially repeating the steps after the connector moving and fixing step. The wire harness in which the difference is previously provided is sequentially assembled.

Further, as shown in FIG. 31, between the connector fixing portion 27 and the circuit length adjusting portion 29 on the downstream side of the electric wire supply direction P, in the present embodiment, the sheet member mounting portion 31 and the circuit length adjusting portion 29 are provided. Similarly to the first embodiment, the structure is provided with an electric wire fixing portion 35 having an electric wire fixing jig 34 that holds each electric wire 11 in a releasable manner from above and below so as to be fixed and held.

Then, after the connector moving / fixing step, the electric wire lifting step, the connector setting step, or the first downstream sheet member mounting step, each electric wire 11 is fixed and held by the electric wire fixing jig 34. (Electric wire fixing and holding step), and in this state, the circuit length adjusting step is performed.

That is, when adjusting the circuit length in the circuit length adjusting step, each wire 11 is pushed down by the wire length adjusting jig 14 to set a slack of a predetermined dimension.
Tension acts on each of them individually. Therefore, this tension is fixed to the connector fixing portion 27 of the connector 2
5, when it acts on the wire pressure contact portion 25a, the wire pressure contact blade 25b
It acts as a force in the pulling-out direction on the electric wire conductor of the electric wire 11 that is pressed into contact with the electric wire, which may lead to a decrease in contact stability.

However, by performing the wire fixing and holding step as a pre-step of the circuit length adjusting step, each wire 11
Is fixed and held by the wire fixing jig 34, the tension generated in the wire 11 at the time of adjusting the circuit length does not act on the wire pressure contact portion 25a of the connector 25 fixed to the connector fixing portion 27, and a good contact is made there. Stability can be secured.

It is to be noted that the first portion is provided on the facing portion 34a of each electric wire fixing jig 34 for fixing and holding each electric wire 11 in a sandwiched state by pressing.
Similar to the embodiment described above, a structure formed of a flexible material such as rubber elastomer may be attached, or a metal or plastic whose end is chamfered may be integrated.

In addition, the electric wire 11 by each electric wire fixing jig 34
The fixed holding of is released after the completion of each circuit length adjustment process.

The wire fixing portion 35 may be provided between the connector fixing portion 27 and the sheet member mounting portion 31 positioned slightly upstream of the position of the connector fixing portion 27.

In the bending portion 13, for example, as shown in FIG.
Also, as shown in FIG. 17, when it is desired to change the axial direction of each electric wire 11 by a bending angle ε of 45 °, for example, the same procedure as in the first embodiment may be performed.

As described above, also in this embodiment, only the extremely easy operation of linearly pushing down the wire length adjusting jig 14 having the step 15 after the wires 11a to 11d are linearly arranged is performed. Then, each electric wire 11
Since a to 11d can be adjusted by slackening to an appropriate length suitable for the bending portion 13, it is possible to fold like a third conventional example in a short time without requiring a working space. Can be deployed without.

When there are three or more bending portions 13, the circuit length adjusting portion 29 may be added according to the number of the bending portions 13. In addition, when there are a plurality of bending portions 13,
When the distance between the curved portions 13 is changed, the distance between the connector pressure contact portion 26, the circuit length adjusting portion 29, the sheet member mounting portion 31, and the connector fixing portion 27 may be appropriately changed according to the purpose.

The insulating tape 1 is used as a connecting sheet member.
Although the structure using 2 is shown, a harder resin insulating plate may be used, and the resin insulating plate may be used to give the wire harness itself shape maintaining characteristics. Furthermore, slack is set. Not limited to the example in which the electric wires 11 are arranged on the same plane, it goes without saying that the electric wires 11 may be bent three-dimensionally and arranged.

Next, a more preferable embodiment will be described with reference to FIGS. 32 and 33. As is clear from FIG. 33, the wire harness has several branches that extend in different directions, for example different bends with different bending angles (90 ° for the lower branch and 45 ° for the upper branch in FIG. 33). You may have the parts 13-1 and 13-2. These bends 1
3-1 and 13-2 are wire length adjustment jigs 14 shown in FIG. 32.
You may form using. In this wire length adjustment jig 14, the step 15 or recess corresponding to each wire 11 (n = 1 to 4) has a gradient θ (providing a bending angle ε = 90 °) while the wire 11 (n = 5 to 5). The step 15 corresponding to 8) has a slope θ / 2 (resulting in a bending angle ε = 45 °). The length Ln of the electric wire 11 (n = 1 to 4) is πnw / 2.
Then, the length Ln of the electric wire 11 (n = 5 to 8) is πnw / 4. Therefore, the heights h3 and h6 of the steps corresponding to the third and sixth wires are equal.

The wire harness may also have a bending portion 13-1 that bends in different directions, for example, a bending portion 13-1 that bends downward and a bending portion 13-2 that bends upward.
The bending angles ε1 and ε2 of 3-1 and 13-2 (for example, ε1 = 90 ° and ε2 = 45 ° in the illustrated embodiment) may or may not be equal to each other.

According to yet another preferred embodiment (not shown), the wire length adjusting jig 14 is arranged at an angle different from 90 ° with respect to the length direction of the wire 11, and the slack part of the wire 11 is adjusted to its length. Rather than being located along a line transverse to the depth direction, they may be offset or displaced from each other with respect to the length direction. In this embodiment, the bending portion 1 of the electric wire 11 having a different starting point is used.
3, that is, using one wire length adjusting jig 14, it is possible to form the curved portions 13 starting from different positions in the length direction. However, when the bending portion 13 starts from the same position, the wire length adjusting jig 14 may be arranged so as to cross substantially the length direction of the wire 11 (or of the bent wire portion) (that is, 90 °). .

In each of the embodiments, the manufacture of the wire harness provided with the curved portion 13 curved in a substantially concentric arc shape is shown. However, even if the local portion is arranged to be bent linearly. Good.

[0106]

As described above, according to the method and apparatus for manufacturing a wire harness of the present invention, a plurality of electric wires are arranged in a straight line and parallel to each other, and a wire length adjusting jig in which a step is formed at a predetermined gradient is provided. It is a method of pressing the tool against the electric wire and setting different size slack for each electric wire.Since it is a method of arranging the electric wires in a straight line, the wiring speed is fast, and while improving the space efficiency, There is an advantage that a bent portion corresponding to a desired wiring route can be easily formed for an electric wire, a large-scale device as in the past is not required, and a wire harness can be easily and efficiently manufactured with a simple device.

In addition, the connector pressure contact portion can be set with two connectors along the wire supply direction, and each connector is equipped with a pressure contact jig for pressure contacting each wire, and each wire is connected between the connector pressure contact positions. In the pressure contact cutting step, each wire is pressed against the connector at the rear end of the wire harness in the wire feed direction, and the connector at the front end of the wire harness in the wire feed direction is used. If each wire is pressed against the wire and the wire is cut between the positions where both connectors are pressed, there is an advantage that the wire harness can be efficiently and continuously manufactured.

Further, the structure is such that it is provided between the connector fixing part and the circuit length adjusting part, and is provided with an electric wire fixing part having an electric wire fixing jig for fixing and holding each electric wire. If the electric wire fixing and holding step of fixing and holding the electric wire is provided as a pre-step of the circuit length adjusting step, there is an advantage that the contact stability of the electric wire pressed into contact with the connector can be ensured well.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a wire harness manufactured according to an embodiment of the present invention.

FIG. 2 is a diagram showing a state in which a bending angle of each electric wire is set to 90 ° in a curved portion of the wire harness.

FIG. 3 is a diagram showing an electric wire whose length is adjusted by an electric wire length adjusting jig.

FIG. 4 is a front view showing an electric wire length adjusting jig for manufacturing the wire harness shown in FIGS. 1 and 2.

FIG. 5 is a perspective view showing an operation of adjusting a length of a curved portion of an electric wire using the electric wire length adjusting jig.

FIG. 6 is a schematic cross-sectional view showing the operation of the wire length adjusting jig for pushing the wire into the opening.

FIG. 7 is an explanatory diagram showing a simplification method for determining an approximate height of a step of an electric wire length adjusting jig.

FIG. 8 is a schematic plan view showing the manufacturing apparatus according to the first embodiment of the present invention.

FIG. 9 is an explanatory view showing the manufacturing process of the wire harness according to the first embodiment of the invention.

FIG. 10 is an explanatory view showing the manufacturing process of the wire harness according to the first embodiment of the invention.

FIG. 11 is an explanatory view showing the manufacturing process of the wire harness according to the first embodiment of the invention.

FIG. 12 is an explanatory view showing the manufacturing process of the wire harness according to the first embodiment of the invention.

FIG. 13 is an explanatory view showing the manufacturing process of the wire harness according to the first embodiment of the invention.

FIG. 14 is an explanatory view showing the manufacturing process of the wire harness according to the first embodiment of the invention.

FIG. 15 is an essential part explanatory view showing the manufacturing process of the wire harness according to the modification of the first embodiment of the invention.

FIG. 16 is a plan view showing another example of the wire harness manufactured according to the embodiment of the present invention.

FIG. 17 is a view showing a state where the bending angle of each electric wire is set to 45 ° in the bending portion of the wire harness.

18 is a front view showing a wire length adjusting jig for manufacturing the wire harness shown in FIGS. 16 and 17. FIG.

FIG. 19 is a schematic plan view showing a manufacturing apparatus according to a second embodiment of the present invention.

FIG. 20 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 21 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 22 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 23 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 24 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 25 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 26 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 27 is an explanatory view showing the wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 28 is an explanatory diagram showing a wire harness manufacturing process according to the second embodiment of the present invention.

FIG. 29 is an explanatory diagram showing an example of a seat member mounting portion.

FIG. 30 is an explanatory diagram showing another example of the seat member mounting portion.

FIG. 31 is an essential part explanatory view showing the manufacturing process of the wire harness according to the modification of the second embodiment of the invention.

FIG. 32 is a front view showing an electric wire length adjusting jig used for manufacturing the wire harness of FIG. 33.

FIG. 33 is a plan view of a wire harness having different bending portions manufactured by the manufacturing apparatus according to another embodiment of the present invention.

FIG. 34 is a perspective view showing a wire harness for electric wiring of a first conventional example.

FIG. 35 is a partially cutaway perspective view showing a wire harness for electric wiring of a second conventional example.

FIG. 36 is a plan view showing a manufacturing process of the wire harness for electric wiring of the second conventional example.

FIG. 37 is a diagram showing a bent state of the wire harness of the third conventional example.

FIG. 38 is a view showing a state where the bent portion of the wire harness of FIG. 37 is elastically restored.

[Explanation of symbols]

11 (11a-11d) electric wire 12 insulating tape 13 curved part 14 Wire length adjustment jig 15 steps 20 Electric wire supply drum 21 Electric wire supply section 22 Line alignment jig 23 Line alignment part 24 Wiring stand 25 connector 26 Connector pressure contact part 26a Pressure welding jig 26b Electric wire cutting blade 27 Connector fixing part 28 Electric wire lifting part 29 Circuit length adjuster 30 openings 31 Seat member mounting part 34 Wire fixing jig 35 Wire fixing part

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01B 13/00 H01B 13/012

Claims (14)

(57) [Claims] 1. A wire pressure welding step of supplying a plurality of electric wires in a substantially straight line shape and in a substantially parallel manner to a connector pressure contact portion located on the upstream side in the wire supply direction, and pressure-connecting each wire to the connector set in the connector pressure contact portion. A connector to which each of the electric wires is pressure-contacted is moved to a connector fixing portion located on the downstream side of the electric wire supply direction to be fixed,
A connector moving and fixing step of arranging each electric wire in a substantially linear shape and in a substantially parallel manner from the upstream side to the downstream side, and an electric wire length adjusting jig having electric wire positioning means formed at a predetermined gradient is pressed against the electric wire and moved. It has a circuit length adjustment process that sets different size slack for each wire, and a pressure welding cutting process that presses each wire into the connector set in the connector pressure contact part and cuts each wire upstream of the connector. A method for manufacturing a wire harness, comprising: 2. An electric wire lifting step of lifting each of the electric wires upward by an electric wire lifting jig arranged slightly downstream of the connector press-contacting portion position, and a connector press-contacting operation in which the electric wires are lifted. The method of manufacturing a wire harness according to claim 1, further comprising a connector setting step of setting at least one connector on the section. 3. The wire harness according to claim 2, further comprising a lifting cancellation step of canceling lifting of the electric wire by the electric wire lifting jig after the circuit length adjusting step and before the pressure contact cutting step. Production method. 4. The two connectors can be set in the connector pressure contact portion along the electric wire supply direction, and in the pressure contact cutting step, each wire is pressure contacted with the connector at the rear end of the downstream side wire harness. The wire harness manufacturing method according to claim 2 or 3, wherein each wire is pressed against the connector at the front end portion of the upstream wire harness, and each wire is cut between the pressure contact positions of both connectors. 5. An electric wire fixing and holding step of fixing and holding each electric wire after the connector moving and fixing step by means of an electric wire fixing jig arranged slightly upstream of the connector fixing portion position, in the circuit length adjusting step. The method for manufacturing a wire harness according to claim 1, wherein the method is provided as a pre-process. 6. The method for manufacturing a wire harness according to claim 1, wherein the circuit length adjusting step is repeated a plurality of times at different positions of the electric wire along the electric wire supply direction. 7. The method of manufacturing a wire harness according to claim 2, wherein the wire positioning means is a step or a recess. 8. As a pre-step of the circuit length adjusting step, a connecting sheet member is provided across adjacent electric wires arranged substantially linearly and substantially parallel to each other, which are located on the downstream side of the position where the electric wire length adjusting jig is pressed. The downstream side wire part fixing step for connecting and fixing each electric wire to each other, and / or as a step after the circuit length adjusting step and lifting release step, upstream from the position where the most upstream side wire length adjusting jig is pressed. The upstream side electric wire portion fixing step of mounting the connecting sheet member over adjacent electric wires arranged substantially linearly and substantially parallel to each other and further connecting and fixing the electric wires to each other is further characterized. 8. The method for manufacturing the wire harness according to any one of 7 to 7. 9. An electric wire supply part for supplying a plurality of electric wires, a wiring installation stand for arranging the plurality of electric wires in a substantially straight line, and an upstream side in the electric wire supply direction in the wiring installation stand,
A connector crimping portion that crimps each electric wire to the set connector, and is arranged on the downstream side in the electric wire supply direction in the wiring rack.
A connector fixing portion for fixing the connector in which each electric wire is pressure-welded, and arranged slightly downstream from the connector pressure-welding portion position,
An electric wire lifting portion that lifts each electric wire upward, and is arranged between the connector fixing portion and the electric wire lifting portion, and presses the electric wire on the wiring mount to set a slack of a different size for each electric wire. And a circuit length adjusting section having an electric wire length adjusting jig formed with electric wire positioning means having a predetermined gradient for contacting each other as described above. 10. The wire harness manufacturing apparatus according to claim 9, further comprising a line aligning unit that aligns the plurality of electric wires supplied from the electric wire supplying unit substantially in parallel. 11. The wire harness manufacturing apparatus according to claim 9, wherein the wire positioning means is a step or a recess. 12. The connector crimping portion is such that two connectors can be set along the wire feeding direction, a crimping jig for crimping each wire to each connector is provided, and each connector is crimped between crimping positions. The wire harness manufacturing apparatus according to claim 9, further comprising at least one electric wire cutting blade that cuts an electric wire. 13. The electric wire fixing portion, which is arranged between the connector fixing portion and the circuit length adjusting portion and has an electric wire fixing jig for fixing and holding each electric wire. An apparatus for manufacturing a wire harness according to any one of claims. 14. A connector fixing portion for mounting a connecting sheet member across respective electric wires arranged linearly and parallel to each other so as to connect and fix adjacent electric wires to each other.
The wire harness manufacturing apparatus according to claim 9, further comprising a sheet member mounting portion provided between the circuit length adjusting portion and the connector pressure contact portion.