JPH0620538A - Method for producing shared wire harness - Google Patents

Abstract

PURPOSE:To carry out efficient mechanized production using an automatic wiring machine by allowing a temporary binding circuit which a plurality of item numbers of wire harness include in common to be commonly usable. CONSTITUTION:A common temporary binding circuit 1x is extracted which is a component element that a plurality of item numbers of wireharness to be produced include in common. The common temporary binding circuit 1x excluded is designed as a joint-less circuit in which a branch connector is used. Wires forming the circuit designed are laid by an automatic wiring machine and the bundle of wires laid are taped 40 at a predetermined part so that they do not get loose. The common temporary binding circuit, which the plurality of item number of wire harness can use in common, can thus efficiently be produced and since the bundle of wires bound by the common temporary binding circuit produced do not get loose because of the taping, they can easily be bound. Also, the number of kinds of the temporary binding circuit can be decreased and then the number of lots in the common part is decreased and there is no joint, so production by the automatic wiring machine is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a wire harness, and more particularly, when a plurality of kinds of wire harnesses are produced, the wiring harness is commonly used in which circuits related to common functions and electrical components are formed by common circuits. It relates to the production method.

[0002]

2. Description of the Related Art As is well known, a wire harness incorporated in an automobile or a copying machine is an electric wiring system including a large number of electric wires, terminals, connectors and the like. The harness is
Conventionally, automatic mechanized production has been required. For example, taking an automobile wire harness as an example, the circuit configuration of the incorporated wire harness differs depending on the vehicle type. In addition, even in the same vehicle model, the wire harness will differ if the grade is different. For example, in low-grade vehicles, a wiring harness with only basic electrical components and a small number of circuits is sufficient, but in higher-grade vehicles, the number of electrical components such as high-end audio equipment, power windows, and electrically adjustable seats increases. You need a harness. As described above, it is efficient to carry out automated mechanized production of wire harnesses of various circuits.

However, since the wire harness uses a lot of members such as electric wires having a poor shape specificity, there is a problem that it is difficult to adapt to mechanization. Therefore, conventionally, the production of wire harnesses has required a large number of manpower, resulting in poor production efficiency and high cost. On the other hand, since the wire harness includes many circuits, it is not easy to assemble the finished product at once. Therefore, a production process is adopted in which the wire harness is divided into a plurality of temporary binding circuits, each temporary binding circuit is made, and then these are collected and finally bound to obtain a finished product.

Therefore, there has been a demand for realizing a shared production of wire harnesses by making some of the temporary binding circuits into circuits that can be shared. However, in the conventional split design of the temporary binding circuit, the circuit having the crimp joint cannot be split into different temporary binding circuits. For example, the temporary binding circuit shown in FIG. As described above, the main design was such that the binding was performed easily, there was no entanglement or entanglement, and a branching design was made so that it could be easily handled. Therefore, even if circuits related to the same function or the same electrical equipment are connected or not connected to other functional circuits and other electrical equipment by crimp joints for each wire harness, they can be shared. It was very difficult to take out the binding circuit.

On the other hand, a prior art of a wire harness that can be used universally for many models is disclosed in Japanese Patent Application Laid-Open No. 1-283708. The wire harness described in this publication has a structure in which the wire harness is divided into a main trunk portion and a branch portion, and both are connected by a connector. The main trunk can be shared regardless of the grade of the vehicle, and the branches are made in multiple types according to the grade of the vehicle. The main harness and the branch corresponding to the grade are connected by the connector, whereby the wire harness is completed. However, in the wire harness described in this publication, it is necessary to match the shared main trunk with the vehicle of the highest grade. This is because when the branch having the most complicated configuration (branch having the most connectors) is connected in advance to the main trunk to which any one of a plurality of types of branch is selectively connected. This is because a circuit for inputting from or outputting to each connector must be provided.

Therefore, the general-purpose wire harness described in this publication becomes a wire harness in which a large number of unnecessary circuits are included in the main trunk except when it is applied to the highest grade vehicle, and an electric wire forming the circuit. However, there is a disadvantage that it is wasteful and the weight is increased, which is not preferable. The present invention has been made based on such a background, and when a plurality of types of wire harnesses are produced, a temporary binding circuit that can be shared without dividing the main trunk and the branch is designed, An object of the present invention is to provide a shared production method capable of producing a plurality of types of wire harnesses by permanently binding the sharable temporary binding circuit to another temporary binding circuit.

[0007]

The invention according to claim 1 is
A shared production method of a wire harness, the step of extracting a shared temporary binding circuit, which is a constituent element commonly included in a plurality of wire harnesses of a certain part to be produced,
A process of designing the extracted shared temporary binding circuit into a jointless circuit using a branch connector, a process of laying an electric wire using an automatic wiring machine to form the designed shared temporary binding circuit, and a cloth The present invention is characterized by including a step of applying a tape to a predetermined portion of the wire bundle of wires to prevent the wire bundle from being scattered.

[0008]

According to the first aspect of the present invention, the common temporary binding circuit common to the plurality of wire harnesses is extracted, and the extracted common temporary binding circuit utilizes the branch connector (junction box, joint connector, etc.). Designed for a jointless circuit that does not use crimp joints. If there is no joint in the circuit and all the circuits are connected by the branch connector, the connection between this shared temporary binding circuit and another temporary binding circuit is used in the shared temporary binding circuit. Can be done by Therefore, the shared temporary binding circuit can be provided with versatility.

Further, since a predetermined portion of the electric wire bundle laid to form the common temporary binding circuit is taped so that the electric wire bundle does not come apart, the produced common temporary binding circuit is produced. The circuit does not lose its shape, is not entangled, and is not entangled, which makes the circuit easy to bind.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. First, some terms used in this specification are defined as follows. Joint As shown in the image diagram of FIG. 1A, for example, an electric wire 1
, The core wire is exposed by peeling off the coating in the middle of the wire, and the one in which the core wire is exposed by peeling off the coating at one end of the electric wire 2 is overlapped, and a connection portion electrically or mechanically connected by the joint terminal 3 or the like A connection part of an electric wire similar to. The similar means, for example, that the coating in the middle of each of the two electric wires is peeled off to expose the core wire, and the exposed portions are connected to each other by a joint terminal or the like. In the above configuration, the electric wire 1 is not a single wire,
This means that the two lines on the right side and the left side are connected at the central connecting portion.

Junction box Also called a junction box. As shown in the image diagram of FIG. 1C, it is a member having housings 8, 9, 10 into which one ends of a plurality of electric wires 5, 6, 7 are inserted and a connection box 11 to which the housings 8, 9, 10 are attached. Junction box 1
In 1 is a bus bar 12 for short-circuiting between a plurality of circuits.
Also, if necessary, a circuit including functional elements such as fuses and relays is provided. This junction box is capable of connecting a plurality of electric wires 5, 6, 7 in a desired state.

Joint Connector As shown in FIG. 1D, the joint connector is a crimping member 13 or a member similar thereto for simply short-circuiting one ends of the electric wires 5, 6, 7. In addition, the joint connector, as shown in the image diagram of FIG. 1B,
It also includes a case in which the portions to be connected are electrically and mechanically connected by the pressure-joint joint connector 4 or the like without stripping the coating of the electric wires 1 and 2.

In this specification, as a general concept of a junction box, a joint connector, etc.,
Use the term "branch connector". Next, specific examples of the present invention will be described in comparison with the prior art. Now, it is assumed that there are two types of wire harnesses for automobiles of product number A and product number B as a plurality of wire harnesses to be produced. Here, the product number refers to a name of a part of an automobile and its part, vehicle type, grade, and design change content expressed by ten-digit numbers. The product number is used to identify the type of wire harness.

The product number A does not include the circuit of the compact disk player (CD) connector, but the product number B includes the circuit of the CD connector.
It is assumed that the two have different configurations. Fig. 2 shows the wire harness of product number A made by the conventional technology, and product number B
The wire harness of is shown in FIG.

The wire harness of product number A is composed of a single temporary binding circuit 1a in which the circuits are connected by a number of joints 20 as shown in FIG. As shown in Fig. 3, the wire harness of product number B has C
The circuit of the D connector 21 is added by the joint 20. This product number B wire harness is
The temporary binding circuit 1b shown in FIG. 4 and the temporary binding circuit 2b shown in FIG. 5 are bound together. When the wire harness of the product number B is divided into the temporary binding circuit 1b shown in FIG. 4 and the temporary binding circuit 2b shown in FIG. 5, all the circuits connected by the joint 20 are temporarily bound circuit 1b shown in FIG. The circuit included in FIG.
It is included in the temporary binding circuit 2b shown in FIG.

As a result, in order to produce two kinds of wire harnesses of product number A and product number B, the temporary binding circuit 1a is used.
(In the case of this embodiment, this temporary binding circuit constitutes the wire harness of the product number A by itself), three types of temporary binding circuits, that is, the temporary binding circuit 1b and the temporary binding circuit 2b must be made. As described above, the wire harnesses of the product numbers A and B have only the difference in whether or not they have the circuit of the CD connector 21, but in the prior art, the temporary binding circuit of the CD connector 21 is formed. However, the wire harness of the product number A shown in FIG. 2, that is, the wire harness of the product number B could not be produced by binding the wire harness with the temporary binding circuit 1a.

On the other hand, in this embodiment, the sharing of the temporary binding circuit is realized as described below. FIG. 6 is a diagram showing a wire harness of product number A produced based on an embodiment of the present invention, and FIG. 7 is a diagram showing a wire harness of product number B. As shown in FIGS. 6 and 7, the wire harness according to this embodiment is a jointless circuit using the junction box 30.

The wire harness of the product number A shown in FIG. 6 is composed of a single temporary binding circuit 1x, and the wire harness of the product number B shown in FIG. 7 is the temporary binding circuit 1x and the drawing shown in FIG. The temporary binding circuit 2x shown in FIG. 9 is bound. In this embodiment, for convenience of description, the wire harness of the product number A and the wire harness of the product number B are described as the finished product after the final binding, but the wire harnesses of the product numbers A and B are temporary binding circuits, respectively. However, this temporary bundling circuit may be permanently bound to another temporary bundling circuit.

As is clear from comparing the circuit of the wire harness of the product number A shown in FIG. 6 with the temporary binding circuit 1x shown in FIG. 8, both are the same circuit. Therefore, in producing the wire harnesses of the product number A and the product number B based on this embodiment, two kinds of temporary binding circuits 1x and 2x shown in FIGS. 8 and 9 may be produced. That is, the temporary binding circuit 1x shown in FIG.
It is a temporary binding circuit that can be commonly used for the wire harness of No. 1 and the wire harness of Item No. B.

As another characteristic of this embodiment, FIG.
As shown in FIG. 5, the wire bundles that form the temporary binding circuit 1x are provided with tapes 40 at predetermined locations so that the wire bundles do not come apart. Also in the temporary binding circuit 2x shown in FIG. 9, similarly, a tape stopper 40 is provided at a predetermined position to prevent the electric wire bundle from coming loose. By doing so, when the temporary binding circuit 1x shown in FIG. 8 and the temporary binding circuit 2x shown in FIG. 9 are fully bound to form the wire harness of the product number B, there is an effect that the regular binding can be smoothly performed.

Even when the temporary binding circuit 1x shown in FIG. 8 is used as the wire harness of the product number A, the product number A
The shape of the wire harness is stable and easy to handle. A more specific comparison of the effects of the tape fastening with reference to the drawings shows a wire harness of product number A manufactured according to this embodiment (that is, a temporary binding circuit 1x).
Is a product as shown in FIG. 10, in which the wire bundle is taped by a predetermined unit so that it does not disperse. On the other hand, if the wire harness 1x of the product number A is not taped, the wire bundle has a shape that easily varies, as shown in FIG.

A further feature of this embodiment is that the shared temporary binding circuit 1x shown in FIG. 8 and the temporary binding circuit 2x shown in FIG. 9 are laid by an automatic wiring machine. Both the temporary binding circuit 1x shown in FIG. 8 and the temporary binding circuit 2x shown in FIG. 9 are circuits without joints, and are therefore suitable for wiring electric wires using an automatic wiring machine. Further, the work of applying the tape stopper 40 to a predetermined portion of the wired electric wire bundle is preferably mechanically performed by an automatic tape fixing device immediately after the wiring. As described above, if the electric wires are laid using the automatic wire laying machine and then the tape is fixed immediately, there is an advantage that the tape can be fixed easily and in a short time. In other words, the total production efficiency is improved by combining the wiring by the automatic wiring machine and the tape fastening, and it is significant in that the wiring by the automatic wiring machine and the tape fastening are combined. .

The tape may be fixed manually by a so-called handy type tape fixing machine. Table 1 summarizes the comparison between the conventional technique described above and the embodiment of the present invention.

[0024]

[Table 1]

As shown in Table 1, according to the prior art, the two wire harnesses of the product number A and the product number B do not have a tentative binding circuit that can be shared, and a total of three types of temporary binding circuits 1a, 1b, It was necessary to produce 2b. On the other hand, according to this embodiment, since the product numbers A and B can be shared by the temporary binding circuits 1x, the product numbers A and B can be produced by producing two types of temporary binding circuits 1x and 2x in total.
Can produce wire harnesses.

Although the above description has been given by taking the relatively simple wire harnesses of the product numbers A and B as an example, the actual wire harness has a much more complicated circuit structure than that described above. The advantages of using this invention are great. For example, product number A composed of three temporary binding circuits, product number B and C composed of four temporary binding circuits
Taking the shared production of each wire harness as an example, the division into the temporary binding circuit according to the conventional method is as shown in Table 2 below, and the division into the temporary binding circuit according to the present invention is as shown in Table 3. become.

[0027]

[Table 2]

[0028]

[Table 3]

As is apparent from comparison between Tables 2 and 3, in the conventional method of dividing into temporary binding circuits, 1a, 1a
b, 1c cannot be shared, 2a, 2b, 2c cannot be shared, and 3a, 3b, 3c cannot be shared, so a total of 11 types in order to produce three wire harnesses of product numbers A, B, C It was necessary to make a temporary binding circuit. On the other hand, according to the present invention, since the temporary binding circuits 1x, 2x, 3x are shared in the wire harnesses of product numbers A, B, C, it is sufficient to make five types of temporary binding circuits in total. I understand.

The present invention is not limited to the embodiments described above, and various modifications can be made based on the contents of the claims.

[0031]

According to the present invention, since the common temporary binding circuit that can be shared by a plurality of wire harnesses of a certain part is a jointless circuit using a branch connector, the types of temporary binding circuits are drastically reduced. As the number of lots in the common area increases and there are no joints, it is easy to put on the automatic wire laying machine, so it can be made using the automatic wire laying machine and the tape bundle is applied to separate the wire bundle. Since it can be prevented, it is possible to make the wire harness common production method with high production efficiency.

[Brief description of drawings]

FIG. 1 is an image view of a joint, a junction box and a joint connector.

FIG. 2 is a diagram showing a wire harness of product number A made by a conventional technique.

FIG. 3 is a diagram showing a wire harness of product number B made by a conventional technique.

FIG. 4 is a diagram showing a temporary binding circuit 1b made by a conventional technique.

FIG. 5 is a diagram showing a temporary binding circuit 2b made by a conventional technique.

FIG. 6 is a product number A produced according to an embodiment of the present invention.
It is a figure which shows the wire harness of FIG.

FIG. 7 is a product number B produced according to an embodiment of the present invention.
It is a figure which shows the wire harness of FIG.

FIG. 8 is a circuit showing a temporary binding circuit 1x produced according to an embodiment of the present invention.

FIG. 9 is a diagram showing a temporary binding circuit 2x produced according to an embodiment of the present invention.

FIG. 10 is an image view of a wire harness of product number A produced according to an embodiment of the present invention.

FIG. 11 is an image view of a wire harness of product number A in a state without tape fastening.

FIG. 12 is an image diagram of a temporary binding circuit that is branched and designed in consideration of easiness of conventional binding.

[Explanation of symbols]

 1x, 2x, 3x common temporary binding circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Takenami 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems Co., Ltd. (72) Fujio Ogawa 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Denso Co., Ltd. (72) Inventor Teiji Sakuma 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Prefecture Sumitomo Wiring Systems Co., Ltd. (72) Takashi Kobayashi 1-14 Nishi-suehiro-cho, Yokkaichi-shi, Mie Sumitomo Denso Co., Ltd. Incorporated (72) Inventor Yuichi Ito 1-14 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (1)

[Claims] 1. A method for common production of wire harnesses, comprising a step of extracting a shared temporary binding circuit which is a constituent element that is commonly included in a plurality of wire harnesses of a certain part to be produced. The process of designing the binding circuit into a jointless circuit using a branch connector, the process of laying the electric wire using an automatic wiring machine to form the designed shared temporary binding circuit, and the laid wire A method for producing a shared wire harness, comprising a step of applying a tape to a predetermined portion of the bundle to prevent the bundle of electric wires from coming apart.