JPH06188055A - Manufacture of wire harness - Google Patents

Abstract

PURPOSE:To efficiently manufacture wire harness, by collecting temporary binding circuits to a product shape at the time of completion, and then shortcircuit-connecting fellow wires, requiring electric connection, by using a press-contact joint connector. CONSTITUTION:A terminal fitting is pressedly mounted on both the ends of a sizedly cut wire to immediately manufacture a temporaly binding circuit without a joint treatment. Respective terminal fittings of a wire unit are inserted in given connector housings A-F to form temporary binding circuits X2 and Y2 etc. Then circuits X2 and Y2 are collected to a production shape at the time of completion to shortcircuit-connect fellow wires requiring electric connection by a press-contact joint connector J/C. Consequently, joint treatment is not required to be made until regular connection, the final stage, to make manufacturing work as a whole effective and also suitable for automation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a wire harness, and more particularly to an improvement in a manufacturing process for manufacturing a wire harness using a pressure contact joint connector (also referred to as "pressure contact joint terminal"). .

[0002]

2. Description of the Related Art Among wire harnesses incorporated in automobiles, copying machines and the like, there are known wire harnesses in which electric wires are connected using pressure contact joint connectors. For example,
Japanese Patent Publication No. 54-37672 discloses an example of a pressure contact joint connector. Further, a wire harness using such a pressure welding joint connector is taught in Japanese Utility Model Application No. 60-944 (see Japanese Utility Model Application Laid-Open No. 61-117465).

As shown in FIG. 12, a wire harness using a press-contact joint connector according to the prior art is arranged such that a bundled portion of electric wires connecting electric devices is located at a midpoint in the longitudinal direction of the electric wires. In addition, the electric wires are connected to each other in the gathering bundle portion by a common pressure contact type joint terminal. Also, as shown in FIG.
A wire harness is also taught in which an electric wire is provided for each electric device and ground terminal, one end of each electric wire is connected to each electric device, and the other end is collected in a common joint connector and short-circuited to each other with a joint bus bar. ing.

The wire harnesses according to these prior arts are all relatively simple circuits, and a pressure contact type joint terminal or the like is used to commonly short-circuit all the electric wires constituting the circuit. On the other hand, when taking a recent wire harness for automobiles as an example, there are few those having a simple circuit configuration as taught by the above-mentioned prior art. For example, a very complicated and large scale in which 400 to 500 circuits are integrated. The number of circuits with various circuit configurations is increasing. I mean,
In recent years, many automobiles are equipped with various electrical components such as an air conditioner, a power window, an electromagnetic door lock, an electric adjustment mirror, and an electric seat, in addition to basic electrical components such as a wiper and a radio. Because.

It is impossible to manufacture a wire harness having such a large-scale circuit structure all at once. Therefore,
Conventionally, for example, a temporary binding circuit having a number of circuits that is easy for a worker of, for example, 5 to 25 circuits to easily remember and to manufacture, is first manufactured, and a predetermined number of temporary binding circuits are collectively bound, that is, a final form of a wire harness. The procedure of manufacturing is adopted.

A more specific description will be given with reference to FIG.
Note that, for convenience of description and illustration, the number of circuits in the circuit of FIG. 14 is much smaller than the actual number of circuits, and does not represent an example of the actual circuit configuration.
FIG. 14 is a diagram schematically showing the current wiring harness manufacturing procedure. In the current wire harness manufacturing process, first, a scale cutting process of cutting an electric wire into a predetermined length is performed, and a stripping process of exposing the core wires at both ends of the wire by stripping the coating on both ends of the cut electric wire. Then, the terminal crimping step of crimping the terminal fittings to the exposed core wires of both ends of the electric wire is performed (see FIG. 14A).

Next, a joint process is applied to the electric wires which require joint treatment. In the joint process,
Intermediate stripping is performed to strip off the coating of the wire that has been cut to size to be connected, and one end of the wire to be connected is crimped with a joint terminal, and insulation tape is wrapped around the joint. (See FIG. 14B). Next, a temporary binding circuit is formed. The temporary binding circuit is formed by inserting a terminal fitting crimped onto the end of the wire into a predetermined connector housing. The temporary bundling circuit is often formed manually by a worker in the related art, so that the temporary bundling circuit is formed in a circuit unit that can be easily remembered by humans. For example, one temporary binding circuit is formed by 5 to 25 circuits.

Among the temporary binding circuits thus formed, as shown in FIG. 14C, there are a temporary binding circuit Y1 having a joint and a temporary binding circuit X1 having no joint. In the illustrated example, in the temporary binding circuit Y1 having a joint, both ends of two electric wires are inserted into the connector housings A and B, respectively, and one of the electric wires is jointly connected with two branch electric wires. . The tip of the branch electric wire is called a so-called bulk terminal and is not yet inserted into the connector housing at this point.

Next, as shown in FIG. 14 (d), the temporary binding circuits X1 and Y1 are assembled and finally bound into a final product form. The loose terminals of the temporary binding circuit Y1 during the final binding are respectively connected to the connector housing C of the temporary binding circuit X1.
And D.

[0010]

In the above-mentioned current wire harness manufacturing process, there are the following problems. The joint process is carried out by manufacturing in lot units, and
Since it is a manual work by a worker, there is a drawback that the working time required for the joint process is longer than that of the other processes and the manufacturing efficiency as a whole is poor.

Since the joint process is performed before the temporary binding circuit is formed, the wire for forming the temporary binding circuit includes a wire having a joint, and the wires are often entangled or entangled when the temporary binding circuit is formed. There is a problem. In particular, since the joint treatment is performed on a lot basis as described above, when the electric wire having one set of joints is pulled out from the lump of electric wires subjected to the joint treatment, the wires are often entangled or entangled. Therefore, there is a defect that the temporary binding circuit cannot be formed smoothly.

When the temporary binding circuits are assembled to form the main binding circuit, since the temporary binding circuit includes a temporary binding circuit including a joint, the wires are entangled even when the predetermined number of temporary binding circuits are main bound. It has a drawback that it is easily entangled. It may be possible to solve the above problems and problems by applying the configuration of the wire harness using the pressure contact joint connector according to the prior art described above. This is because, for example, in a certain temporary binding circuit, when all the electric wires forming the temporary binding circuit are commonly short-circuited and connected, joint processing can be performed using the press-contact joint connector after forming the temporary binding circuit. .

However, not all of the temporary binding circuits have a structure like a wire harness using the pressure contact joint connector according to the prior art. Many temporary binding circuits including joints do not jointly connect all of the plurality of electric wires that form the temporary binding circuit, but instead of jointing all of the plurality of electric wires that form the temporary binding circuit, the temporary binding circuit Y1 of FIG. This is because branch electric wires and the like are often connected by joints only to specific electric wires. Therefore, even if the configuration of the wire harness using the pressure contact joint connector according to the prior art is applied, the above problems and are not solved for all temporary binding circuits.

Further, the above problems cannot be solved even by applying the structure of the wire harness using the pressure contact joint connector according to the prior art. This is because the wire harness according to the prior art is intended for a circuit in which all electric wires need to be commonly short-circuited and connected, such as a ground circuit, and is a composite circuit including a large number of circuits for connecting a plurality of systems. This is because it is not intended for connection of. In other words, the wire harness according to the conventional technique is only a technique for a relatively small number of circuits such as the temporary binding circuit described in this specification.

Against the background of the above-mentioned prior art, the present invention is a method of manufacturing a wire harness including a manufacturing process of first manufacturing a temporary binding circuit and finally binding the temporary binding circuit according to the current implementation situation. The main object of the present invention is to provide a method capable of efficiently manufacturing a wire harness as a whole. Another object of the present invention is to provide an effective manufacturing method of a wire harness suitable for automation of manufacturing by an automatic manufacturing machine.

[0016]

The invention according to claim 1 is
In the method for manufacturing the wire harness, a scale cutting step of cutting the electric wire into a predetermined length, a peeling step of exposing the core wires on both ends of the electric wire by stripping the coating on both ends of the electric scale-cut electric wire,
And a terminal crimping step of crimping the terminal fittings to the core wires on both ends of the exposed electric wire, thereby producing a plurality of electric wire units necessary to make a predetermined temporary binding circuit, A predetermined number of temporary binding circuits are manufactured by inserting each terminal fitting into a predetermined connector housing, and the predetermined number of temporary binding circuits thus manufactured are assembled into a finished product form. At that time, among the electric wires forming each temporary binding circuit, the electric wires that need to be electrically connected are short-circuited to each other by using a press contact joint connector.

According to a second aspect of the present invention, in the method for manufacturing the wire harness, the press-contact joint connector is attached by using a press-contact press. According to a third aspect of the present invention, in the method of manufacturing a wire harness according to the first or second aspect, the temporary binding circuit is manufactured in a circuit unit that is easily mechanized or shared. is there.

According to a fourth aspect of the present invention, in the method for manufacturing a wire harness according to any one of the first to third aspects, a plurality of electric wire units produced by the length cutting step, the peeling step and the terminal crimping step are included. Manufacture and production of temporary binding circuits are performed by mechanized production using an automatic wiring machine, and the connection points of the electric wires that need to be electrically connected after being assembled into the product form are bulged in a loop shape and wired. It is characterized by that.

[0019]

According to the first aspect of the present invention, first, a plurality of electric wire units required to make a temporary binding circuit are manufactured. Each electric wire unit is made by a length cutting process, a peeling process, and a terminal crimping process. The electric wire unit made is basically a single wire structure. Therefore, when manufacturing the temporary binding circuit, it suffices to insert each of the wire units of the single wire configuration into the connector housing, and the wires are not entangled or entangled.

The temporary bundling circuit thus manufactured is assembled into a predetermined set and finally bound. Since the temporary binding circuits before the main binding have no joints, the temporary binding circuits are not entangled or entangled during the main binding. At the time of main bundling, electric wires in the temporary binding circuit that need to be electrically connected are short-circuited and connected by a pressure joint connector. In this way, the joint connection is made for the first time at the time of main binding, that is, at the final step in the manufacturing process of the wire harness. Moreover, since the joint connection is made by the pressure welding joint connector, it can be performed easily and in a short time.

According to the second aspect of the present invention, since the press-contact joint connector is attached by the press-contact press machine, the burden on the operator can be reduced. Further, as in the third aspect of the invention, since the joint connection of the electric wire using the pressure joint connector is performed at the final stage of the manufacturing process, there is no joint in the temporary binding circuit, and the temporary binding circuit is easily mechanized or shared. .

According to the fourth aspect of the present invention, when the temporary binding circuit is mechanized and produced, the electric wires to be connected by the press contact joint connector are laid out so as to project in a loop shape at the time of the final binding. Short-circuit connection can be easily performed with the pressure welding joint connector.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wire harness manufacturing method according to an embodiment of the present invention will be described below in detail with reference to the drawings, together with a comparison with a conventional manufacturing method. FIG. 1 is a diagram schematically showing a method for manufacturing a wire harness according to an embodiment of the present invention.
It is a figure compared with the manufacturing method of the present wire harness demonstrated with reference to FIG.

Explaining with reference to FIG. 1, first, a length cutting process for cutting the electric wire into a predetermined length is performed, and the coating on both ends of the electric wire after the length cutting is stripped to expose core wires on both ends of the electric wire. The stripping step is performed, and the terminal crimping step of crimping the terminal fittings to the exposed core wires on both ends of the wire is performed (FIG. 1).
(See (a)). The plurality of electric wire units made in this way are necessary for making a temporary binding circuit, and the electric wire unit is composed of a single wire.

Unlike the conventional method, a joint process is not performed for a plurality of electric wire units of this single wire construction, and the temporary binding circuit is immediately manufactured (see FIG. 1B). The temporary binding circuit is formed by inserting the terminal fittings for each of the plurality of electric wires into a predetermined connector housing. For example, both ends of a certain two electric wires are inserted into the connector housings A and B, respectively, and the temporary binding circuit X2 is
Is formed. Further, one end of a certain electric wire unit is inserted into each of the connector housings C and D, the other end of each electric wire unit is inserted into the connector housing E, and both ends of the other electric wire unit are respectively inserted into the connector housing C.
Finally, the temporary binding circuit Y2 is formed by being inserted into D.

The temporary binding circuit X thus formed
2 and Y2 have no joint as shown in FIG. 1 (b). Next, main bundling is performed in which a predetermined number of temporary bundling circuits are assembled and connected in a finished product form (FIG. 1C).
reference). In this binding, for example, temporary binding circuits X2 and Y
2 is assembled into the product form at the time of completion, and the wires that require electrical connection among the wires are pressure-welded joint connector J /
It is electrically short-circuited and connected at C. As described above, a major feature of this embodiment is that the temporary binding circuits are joint-connected at the final stage of the production of the wire harness called the main binding.

When the wire harness manufacturing method according to the embodiment of the present invention is used, the length-cut electric wire is basically a single wire until the time of actual binding, and a joint step is not provided in the middle of the manufacturing process. Therefore, it is possible to prevent deterioration of workability due to the joint treatment. Further, as will be described later in detail, the production of the temporary binding circuit including the length cutting step, the peeling step, and the terminal crimping step can be easily performed using an automated machine.

Next, with reference to FIGS. 2 to 7, a more specific circuit close to an actual product will be described as an example. In addition,
It should be noted that in FIGS. 2 to 7 as well, for convenience of illustration, the number of temporary binding circuits for main binding is omitted as compared with an actual circuit. 2 to 7
Among them, FIG. 2, FIG. 3 and FIG. 4 show the current temporary binding circuits X1 and Y1 shown for comparison and the present binding circuit in which they are assembled. On the other hand, FIGS. 5, 6 and 7 show a temporary binding circuit X2 manufactured by the manufacturing method according to the embodiment of the present invention, which is drawn in comparison with FIGS. 2, 3 and 4.
It shows Y2 and the present binding circuit in which they are assembled.

First, referring to FIG. 2, the present temporary binding circuit X
1 has a configuration including a plurality of electric wire units W1 and five connector housings 1 to 5 in which the respective terminal fittings of the electric wire unit W1 are inserted. The five connector housings 1 to 5 are respectively a hazard switch connector housing 1, a connector housing 2 for coupling with another wire harness group, a junction box connector housing 3, a defogger switch connector housing 4, and an overhead light lighting control. It is a unit connector housing 5. This current temporary binding circuit X1 does not include a joint-processed electric wire.

On the other hand, referring to FIG. 3, the current temporary binding circuit Y1 has a plurality of electric wire units W2 and five connector housings 6-10. Each connector housing 6-1
0 is a connector housing 6 for an air purifier switch, a connector housing 7 for an overdrive changeover switch, a connector housing 8 for a shock absorber control switch, and a connector housing 9 for an automatic transmission power changeover switch.
And the connector housing 10 for the air purifier body. This current temporary binding circuit Y1 includes a joint-treated electric wire, and the joint is indicated by an arrow J and an electric wire tip. Although not shown in the figure, each joint is covered with an insulating tape. Further, the current temporary binding circuit Y1 includes a so-called loose terminal ST. The two loose terminals ST1 at the left end are loose terminals that are inserted into the hazard switch connector housing 1 at the time of main binding. The loose terminal ST2 shown on the right side is a loose terminal that is inserted into the defogger switch connector housing 4 at the time of main binding.

FIG. 4 is a diagram showing a wire harness in which the current temporary binding circuits X1 and Y1 shown in FIGS. 2 and 3 are fully bound. Although not shown in the figure, each joint is covered with the insulating tape as described above, and this insulating tape may stick to the electric wire etc. at the time of the main binding, which is one of the causes of the decrease in workability of the main binding. Has become. Further, since the loose terminals ST1 and ST2 have to be inserted into a predetermined connector housing at the time of main binding, and there are terminals that require so-called post-insertion processing, this also contributes to the deterioration of workability. .

FIG. 5 shows a temporary binding circuit X2 manufactured by the manufacturing method according to one embodiment of the present invention. The temporary binding circuit X2 includes a plurality of electric wire units W3 and five connector housings 1 to 5, like the current temporary binding circuit X1. The five connector housings 1 to 5 are the same as those in the current temporary binding circuit X1, and the same connector housings are designated by the same reference numerals, and a duplicate description will be omitted here.

The structural characteristic of the temporary binding circuit X2 is that the U-turn portions U1 and U2 in which the portions to be connected by the pressure welding joint connector are bulged in a loop shape at the time of the final binding later.
Is being made. Such a U-turn part U
1 and U2 can be easily formed especially by automatically laying electric wires with an automatic laying machine. This is because, when performing wiring with an automatic wiring machine, wiring pins can be planted in line with the U-turn portions U1 and U2, and wiring can be performed so that the wiring pins are hooked with electric wires. Is.

An automatic wiring machine for automatically wiring electric wires for manufacturing a temporary binding circuit is, for example, the applicant's earlier application (Japanese Patent Application No. 4-155349 and Japanese Utility Model Application No. 4-436).
09, Japanese Patent Application No. 4-163046, Japanese Patent Application No. 4-248.
An automatic wiring machine as described in No. 300) may be used. Moreover, you may use other automatic wiring machines. Figure 6
Shows a temporary binding circuit Y2 manufactured by the manufacturing method according to the embodiment of the present invention. This temporary binding circuit Y2 corresponds to the current temporary binding circuit Y1 shown in FIG. 3, and includes a plurality of electric wire units W4 and five connector housings 6 to 10. The respective connector housings 6 to 10 are the same as the connector housings 6 to 10 in FIG. 3, and the same parts are designated by the same reference numerals.

The feature of the temporary binding circuit Y2 shown in FIG.
This means that all the constituent electric wire units W4 are single wires and do not include joints. Moreover, there is no so-called loose terminal. Furthermore, the U-turn portions U3, U4, U5 in which the connecting points of the electric wires to be connected by the pressure-welding joint connector at the time of the final binding later are expanded in a loop shape.
It is said that.

The U-turn portions U3, U4 and U5 can be easily produced by laying them with an automatic laying machine, like the temporary binding circuit X2. FIG. 7 is a circuit diagram of a wire harness manufactured according to an embodiment of the present invention in which the temporary binding circuit X2 shown in FIG. 5 and the temporary binding circuit Y2 shown in FIG. In the manufacturing method according to this embodiment, the temporary binding circuits X2 and Y2 are assembled into a finished product form, and the U-turn portion U1 of the temporary binding circuit X2 and the U-turn portion U3 of the temporary binding circuit Y2 are pressure-joint joint connectors. Short-circuited by J / C1. Further, the two electric wires included in the U-turn portion U4 formed in the temporary binding circuit Y2 are short-circuited and connected by the press contact joint connector J / C2. Further, the U-turn portion U2 of the temporary binding circuit X2 and the U-turn portion U5 of the temporary binding circuit Y2 are combined, and the electric wires are short-circuited to each other by the press contact joint connector J / C3. As described above, according to this embodiment, the joint process is not performed until the main binding, and the electric wires that need to be electrically connected are short-circuited to each other by using the press contact joint connector J / C for the first binding. This is a major feature of the manufacturing method. In the case where the electric wires are short-circuited and connected by using the press contact joint connector J / C, the predetermined electric wires of the plurality of temporary binding circuits may be short-circuited as in the case where the U-turn portions U1 and U3 are short-circuited. , The U-turn portion U4 may be short-circuited to connect a plurality of electric wires forming one temporary binding circuit.

As described above, if the short-circuit connection is performed during the main binding, the efficiency of manufacturing the wire harness as a whole can be improved. FIG. 8 is a diagram for explaining an advantage in manufacturing a wire harness by the manufacturing method according to the above-described embodiment, particularly an advantage of shortening the manufacturing period, and shows a comparison with the current manufacturing method. .

FIG. 8A shows an example of the number of manufacturing days required to manufacture a wire harness by the current manufacturing method. The length cutting, peeling, and terminal crimping steps are performed in lot units and take, for example, 2 days. After that, joint processing is performed for each electric wire unit that requires joint processing. Joint processing is also performed in lot units, and it takes, for example, 3 days. During this period, the wire harness cannot be assembled only by the wire unit that does not require joint treatment. Therefore, until the joint processing is finished,
It is necessary to wait for the assembly process.

On the other hand, as shown in FIG. 8 (b), in the manufacturing method according to this embodiment, when the wire length cutting, stripping and terminal crimping steps are completed in 2 days, the assembly step (temporary binding circuit) is started immediately thereafter. Manufacturing process). Therefore, the time required for manufacturing can be shortened by, for example, 3 days as compared with the conventional case. It should be noted that FIG. 8 is a comparison when the steps up to the temporary binding are carried out by using a machine or manually by an operator for each step. If in this example,
In the case of performing mechanized production in which the processes up to temporary binding are consistent, mechanization cannot be performed in the joint processing of the current technology, and thus the number of manufacturing days is further different between the present embodiment and the current technology.

FIG. 9 is a diagram for explaining another advantage when the manufacturing method according to the embodiment of the present invention is adopted, and shows a comparison with the current manufacturing method. Figure 9
(A) is an illustration figure of the wire harness manufactured by the present manufacturing method, for example, what connected the headlamp and the turn (direction indicator) to the wiper circuit is shown. In the current manufacturing method, since the joint processing step is included before manufacturing the temporary binding circuit, it is difficult to divide the temporary binding circuit into system units.

On the other hand, in the manufacturing method according to the embodiment of the present invention shown in FIG. 9 (b), joint processing is first performed by the pressure joint connector at the time of main binding. Therefore, the wiper circuit, the headlamp circuit, and the turn (direction indicator) circuit are separately manufactured as temporary binding circuits, and joint processing can be performed using the press-joint joint connector at the stage of final binding. Therefore, the system division design of the temporary binding circuit becomes easy.

As described above, the advantage that the temporary binding circuit can be separately designed and manufactured for each system makes the shared design easier as the circuit becomes more complicated, such as a wire harness of an automobile. In automobile wire harnesses, it is necessary to jointly connect the headlamp and turn circuits to the circuit that connects the wiper switch and wiper motor, for example.

It is necessary to jointly connect a circuit for activating the electromagnetic door lock when the speed reaches a predetermined speed with respect to a circuit connecting the speedometer and the speed sensor. In the above circuit, it is necessary to jointly connect an interlocking circuit for ejecting the washer liquid to the wiper switch.

In the above circuit, it is necessary to jointly connect a circuit connected to the switch for the driver's seat to the circuit for the electromagnetic door lock to provide a circuit for centrally operating the four electromagnetic door locks from the driver's seat. There is. When different systems or different circuits such as the above are joint-connected, the temporary binding circuits can be joint-processed during the final binding, and the temporary binding circuits can be easily designed for each system. Further, the circuit designed for each system has an advantage that it can be shared, so that there is also a side effect of facilitating the shared design of the temporary binding circuit.

FIG. 10 is a diagram showing an example of the construction of a work board required for the main binding in the manufacturing method according to the embodiment of the present invention. In the manufacturing method according to this embodiment, the work of assembling the temporary binding circuits into the finished product form and performing the main binding is performed manually. The drawing number 21 shown in FIG. 10 is used to collect a predetermined number of temporary binding circuits for main binding. On the drawing board 21, a plurality of circuit holders 22 are arranged in advance according to the product form at the time of completion. The worker holds a predetermined number of temporary binding circuits in the holder 22 to collect the predetermined number of temporary binding circuits into a finished product form.

The drawing board 21 is also provided with a press space 23 for mounting the press contact joint connector and a press contact joint connector base 24 arranged adjacent to the press space 23. The press space 23 and the pressure welding joint connector base 24 are shown in FIG.
As shown in (a), they may be arranged in the left-right direction, and a plurality of sets may be arranged in the length direction (left-right direction) of the drawing board 21, or, as shown in FIG. 10 (b), The press space 23 and the press contact joint connector base 24 may be arranged in the vertical direction, and a plurality of sets may be arranged in the horizontal direction.

FIG. 11 is a perspective view showing an example of the pressure contact press machine 30 provided in the press space 23 and an example of the pressure contact joint connector base 24. The press-contact press machine 30 for attaching the press-connect joint connector is hung on a hook 32 attached to the tip of a wire 31 that can be moved up and down. The press machine 30 is provided with a vertically long support plate 33 and a hydraulic press cylinder 34 attached to the support plate 33.
A pressing member 35 that is moved up and down by a hydraulic press cylinder 34 is provided below 4. This pressing member 35
A recess 36 is formed on the lower surface of the connector, and the lid portion or the tooth portion of the press contact joint connector can be set in the recess 36. A positioning guide plate 37, which extends horizontally from the support plate 33, is further fixed to the press-contact press 30 below the support plate 33.

On the other hand, a plurality of, for example, two struts 41 are erected on the surface of the main bundling board 21, and a pressure-joint joint connector base 24 is attached to the upper ends of the two struts 41. A positioning protrusion 43 for setting the main body housing 42 of the press-joint joint connector is formed on the upper surface of the connector base 24. Also, the connector base 2
On the lower surface of 4, there is provided a positioning guide 44 that engages with the positioning guide plate 37 of the press machine. When attaching the press contact joint connector, the positioning guide plate 37 is engaged with the positioning guide 44, and the hydraulic press cylinder 34 is operated in this state. Then, the pressing plate 35 is lowered by the hydraulic press cylinder 34, and the pressing plate 35
The lid portion or the tooth portion set in (1) is fitted into the main body housing 42 of the press contact joint connector.

At the time of the main binding, the portion of the electric wire that needs to be electrically connected in the predetermined number of temporary binding circuits is the U-turn portion as described above. Therefore, the U-turn portion is projected from the temporary binding circuit assembled on the drawing board 21, and the U-turn portion may be set to the press-contact joint connector set on the press-connect joint connector base 24. As described above, since the electric wire portion requiring joint treatment in the temporary binding circuit is the U-turn portion, this U-turn portion can be easily set in the press-welding joint connector, and it is necessary to use the press-welding press machine. It is possible to easily attach the crimp joint connector to various places and short-circuit the wires.

The above-described method for manufacturing a wire harness only shows one embodiment of the present invention, and the present invention is not limited to the embodiment described above. In the description of the embodiments, for ease of explanation and illustration, only two temporary binding circuits are used for this binding, but when manufacturing an actual wire harness, a large number of temporary binding circuits are assembled. Often bound together. In such a case, of course, the wire harness can be manufactured using the manufacturing method according to the present invention.

Further, in the manufacturing method of the present invention, the production of a plurality of electric wire units including the scale cutting step, the peeling step and the terminal crimping step and the production of the temporary binding circuit using the plurality of electric wire units are performed by an automatic machine device. It may be performed, or in some cases, may be performed manually by a worker. In addition, the present invention can be variously modified within the scope of the claims.

[0052]

According to the invention described in claim 1, when the wire harness is manufactured, at the time of the final binding, which is the final step, a portion of the electric wires which needs to be electrically connected is connected by a pressure welding joint connector. Since the short-circuit connection is used, it is not necessary to perform the joint process before the main binding, and the temporary binding circuit can be easily manufactured, and the efficiency of the manufacturing work as a whole can be improved. In particular, since the temporary binding circuit is formed by a single wire unit of the electric wire, the manufacturing method can be easily adapted to mechanization.

According to the second aspect of the invention, when the electric wires that need to be electrically connected at the time of the main binding are short-circuited by the press-joint joint connector, the press-contact press machine is used. The pressure contact joint connector can be attached easily and without burden. Further claim 3
In the invention described above, the temporary binding circuit can be collectively manufactured in circuit units that are easily mechanized or shared, so that a temporary binding circuit that can be shared by many types of circuits can be easily manufactured.

Further, according to the invention as set forth in claim 4, it is possible to perform the scale cutting, peeling, terminal crimping, temporary binding circuit formation, etc. until the main binding by using an automatic device, and only the final main binding. Since a manual work by an operator is sufficient, a manufacturing method of a wire harness with high manufacturing efficiency can be achieved.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a method for manufacturing a wire harness according to an embodiment of the present invention.

FIG. 2 is an illustrative view showing a configuration of a current temporary binding circuit X1.

FIG. 3 is an illustrative view showing a configuration of a current temporary binding circuit Y1.

FIG. 4 is an illustrative view of a configuration in which the current temporary binding circuits X1 and Y1 are fully bound.

FIG. 5 is an illustrative view showing a configuration of a temporary binding circuit X2 manufactured by a manufacturing method according to an embodiment of the present invention.

FIG. 6 is an illustrative view showing a configuration of a temporary binding circuit Y2 manufactured by a manufacturing method according to an embodiment of the present invention.

FIG. 7 is an illustrative view showing a configuration of a main binding circuit formed by main binding of temporary binding circuits X2 and Y2 manufactured by a manufacturing method according to an embodiment of the present invention.

FIG. 8 is a diagram showing advantages of manufacturing a wire harness by a manufacturing method according to an embodiment of the present invention in comparison with a current manufacturing method.

FIG. 9 is a diagram showing a structural advantage of a wire harness when a manufacturing method according to an embodiment of the present invention is adopted, in comparison with a current manufacturing method.

FIG. 10 is a diagram showing an example of the construction of a work board necessary for performing the main binding in the manufacturing method according to the embodiment of the present invention.

FIG. 11 is a perspective view showing an example of a pressure contact press machine 30 provided in the press space 23 and an example of a pressure contact joint connector base 24.

FIG. 12 is a diagram showing an example of a wire harness using a pressure contact joint connector according to the prior art.

FIG. 13 is a diagram showing another example of the wire harness using the pressure contact joint connector according to the prior art.

FIG. 14 is a diagram schematically showing a current method for manufacturing a wire harness.

[Explanation of symbols]

 1-10 Connector housing J / C Pressure contact joint connector X1, X2, Y1, Y2 Temporary binding circuit U1, U2, U3, U4, U5 U turn part 30 Pressure contact press machine

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[Procedure amendment]

[Submission date] May 19, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

However, not all of the temporary binding circuits have a structure like a wire harness using the pressure contact joint connector according to the prior art. Many subassembly circuit including a joint, all of the plurality of wires forming a subassembly circuit instead of the joint connection, as subassembly circuit Y1 in the above FIG. 14 (b), the one of the plurality of electric wires This is because branch electric wires and the like are often connected by joints only to specific electric wires. Therefore, even if the configuration of the wire harness using the pressure contact joint connector according to the prior art is applied, the above problems and are not solved for all temporary binding circuits.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

Claims (4)

[Claims] 1. A length cutting step of cutting an electric wire into a predetermined length, a peeling step of exposing the core wires on both ends of the electric wire by stripping the coating on both ends of the electric wire cut and cut, and a core wire on both ends of the exposed electric wire. By performing a terminal crimping step of crimping the terminal metal fitting to, a plurality of electric wire units required to make a predetermined temporary binding circuit are manufactured, and each terminal metal fitting of the plurality of electric wire units is preliminarily prepared in advance. A predetermined number of temporary binding circuits are manufactured by inserting them into a predetermined connector housing, and the predetermined number of temporary binding circuits manufactured in this way are assembled into a finished product form. A method for manufacturing a wire harness, characterized in that, among electric wires constituting a circuit, electric wires that require electrical connection are short-circuited to each other by using a press contact joint connector. 2. The method of manufacturing a wire harness according to claim 1, wherein the press-contact joint connector is attached by using a press-contact press machine. 3. The method for manufacturing a wire harness according to claim 1 or 2, wherein the temporary binding circuit is manufactured in a circuit unit that is easily mechanized or shared. 4. The method for manufacturing a wire harness according to claim 1, wherein a plurality of electric wire units manufactured by the length cutting step, a peeling step and a terminal crimping step and a temporary binding circuit are manufactured. Is performed by mechanized production using an automatic wiring machine, and the connection point of the electric wire that needs to be electrically connected after being assembled into a product form is inflated in a loop shape and wired. is there.