JP2009301949A - Electric wire wiring object and electric wire wiring method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a short circuit caused by a cut electric wire effectively. <P>SOLUTION: (A) Firstly, only the insulating coating 15 is cut at a middle part (C1 portion) of a prescribed electric wire 6 installed between a pair of housings 2, 3. (B) Each insulating coating 15, 15 is shrunk so as to pull respectively to both sides and an inner conductor 16 is made to expose at the center. (C) In this state, both the side two parts (C2 portion) toward each insulating coating 15 are cut and the inner conductor 16 is cut away by a prescribed length. (D) The shrunk insulating coatings 15, 15 are extended to the original length. Then, the insulating coatings 15, 15 extend to the middle part of plates 4, 4 going over the end part of the inner conductor 16 cut respectively, and thereby, an electric wire wiring object in which the inner conductor 16 is covered by the insulating coating 15 is obtained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an electric wire wiring body wired by an insulation displacement joint connector used for manufacturing a wire harness of an automobile, and an electric wire wiring method.

  As shown in Patent Document 1, for example, a press-contact joint connector is known which is formed by housing a plurality of press-contact terminals of electric wires in a housing in which a plurality of electric wire insertion ports are arranged in parallel at both ends. In this pressure contact terminal, two blade portions that press-contact a pair of adjacent wires are connected in a direction orthogonal to the wire, and when forming a branch circuit, the pressure contact terminals are paired in the direction orthogonal to the wire. A tool such as a nipper or a cutter is used to place the wires between the press contact terminals in a state where the positions of the wires are shifted and the three wires are inserted into the housing in parallel and the two wires are pressed into each press contact terminal. Disconnect with. As a result, two sets of branch circuits having two branches are obtained.

Japanese Patent No. 3541540

  In such a pressure-welded joint connector, due to an increase in the number of branches, the situation of arrangement in the vehicle, etc., a pair of housings that accommodate the pressure-contact terminals are arranged in the direction of the electric wires, and any electric wires installed between the housings A branch circuit may be formed by cutting. However, since the ends of the wires cut between the housings are left as they are in an exposed state, the end portions that become free are likely to swing between the housings, and the end surfaces of the internal conductors are the vehicle body and other mounted parts. There is a risk of short circuit due to contact with metal parts such as tools. Moreover, when adjacent electric wires are cut, an internal conductor may contact between the electric wires to cause a short circuit.

  Then, even if it is a case where an electric wire is cut | disconnected between housings, this invention aims at providing the electric wire wiring body and electric wire wiring method which can prevent the short circuit resulting from the cut electric wire effectively. Is.

In order to achieve the above object, according to the first aspect of the present invention, a plurality of electric wires are wired substantially in parallel between a pair of housings in which the press contact terminals are respectively accommodated, and are press-fixed to a predetermined press contact terminal. A wire laying body wired by a pressure-welded joint connector in which a predetermined electric wire is cut between housings to form a branch circuit, and the end of the inner conductor is covered with an insulation coating at the end of the cut electric wire. It is located inside the end portion.
In order to achieve the above object, according to the second aspect of the present invention, a pressure welding joint connector comprising a pair of housings each accommodating a pressure welding terminal is set on a wiring board of a wire harness, and a plurality of electric wires are interposed between the housings. Are arranged in parallel with each other and are press-fixed to the pressure contact terminals, respectively, and a predetermined electric wire is cut between the housings to form a branch circuit. Only the insulation coating is cut, and the cut insulation coating is shrunk to the housings on both sides to expose the inner conductors, and the exposed inner conductors are cut to a predetermined length, and then the insulation coatings on both housings are restored. It is characterized by extending to a length of.
In order to achieve the above object, according to a third aspect of the present invention, there is provided a press-joint joint connector comprising a pair of housings each housing a press-contact terminal on a wiring board of a wire harness, and a plurality of electric wires between the housings. Are arranged in parallel with each other and fixed to the pressure contact terminals, respectively, and a predetermined electric wire is cut between the housings to form a branch circuit. The inner conductor is exposed by shrinking the insulation coating to the housing side at each end of the cut electric wire, and the exposed inner conductor is cut to a predetermined length, and then the insulation coating on both housing sides is applied. Each is characterized by extending to its original length.
In order to achieve the above object, according to a fourth aspect of the present invention, a pressure-joint joint connector comprising a pair of housings each accommodating a pressure-contact terminal is set on a wiring board of a wire harness, and a plurality of joints are provided between the housings. An electric wire laying method in which electric wires are wired substantially in parallel and fixed to the pressure contact terminals, respectively, and a predetermined electric wire is cut between housings to form a branch circuit, which is cut between a pair of housings. The insulation coating of the electric wires is pulled to the housing sides on both sides, the electric wires are cut by a predetermined length at the tensile portions, and then the insulation coating on both housing sides is returned to the original length. .

According to the present invention, at the end portion of the cut electric wire, the end portion of the inner conductor is positioned on the inner side of the end portion of the insulating coating, and is protected by the insulating coating. Therefore, there is no possibility that the inner conductor will contact the vehicle body or other mounted parts, or the inner conductors will contact each other, and even if the electric wire is cut between the housings, a short circuit caused by the cut electric wire Can be effectively prevented. Further, since no other member is used for protecting the cut electric wire, the structure is simplified, the cost increase is suppressed, and the projecting portion from the housing is eliminated, and the handleability is excellent.
In particular, according to the wiring method of claims 2 and 3, since only the inner conductor from which the insulation coating has been removed is cut out, there is an advantage that the disposal and recycling of the inner conductor can be easily performed. Moreover, according to the wiring method of Claim 4, since the cutting process is only required once, the working time concerning wiring is shortened compared with the other methods, and the wiring structure of Claim 1 is simplified. There are benefits to be gained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Form 1]
FIG. 1 is a perspective view showing an example of a pressure-joint joint connector. The pressure-joint joint connector 1 includes a first housing 2 and a second housing 3, and each housing 2, 3 includes a plurality of electric wires 6, 6,. Is formed from a plate 4 on which the wire is wired and a cover 5 assembled above the plate 4.
The plate 4 has a plurality of receiving grooves 8, 8... In which a plurality of partition walls 7, 7. -Forming. The cover 5 has a rectangular shape with no bottom covering the upper surface of the plate 4 and the side surface parallel to the receiving groove 8 except for the front and rear ends of the receiving groove 8 in the assembled state to the plate 4.

On each plate 4, a plurality of three press contact terminals 9 are arranged in parallel in a direction orthogonal to the electric wires 6. As shown in FIG. 2A, the press contact terminals 9 are formed of a pair of receiving blades 11 and 11 of a U-shaped electric wire 6 in the forming direction of the receiving groove 8 and fitted into the receiving groove 8. 10 are connected to each other adjacent to each other in the direction orthogonal to the electric wire 6 by the connecting portions 12 and 12 (hereinafter, this press contact terminal is referred to as “double terminal”). As shown in FIG. 2B, a pair of insulation barrels 13 and 13 for caulking and fixing the insulation coating of the electric wires 6 are provided on both ends of the duplex terminal 9 respectively.
Further, the double terminals 9 are arranged in a staggered manner so as to be opposed to each other by one wire between the plates 4 and 4 of the first and second housings 2 and 3. Therefore, the front-side accommodation groove 8 in the plate 4 on the first housing 2 side and the rear-side accommodation groove 8 in the plate 4 on the second housing 3 side in FIG. It has become.

  In the press-fit joint connector 1 configured as described above, when the electric wire 6 is wired, the two plates 4 and 4 each having the double terminals 9 arranged in a staggered manner are set on a wiring board (not shown), and then the electric wire 6 6 is wired and positioned between the duplex terminals 9 and 9 of both plates 4 and 4 so as to form a corresponding branch circuit, and is pressed against the terminal fitting 10. Then, as shown in FIG. 3, it will be in the state by which the electric wire 6,6 ... pressure-contacted between the 1st, 2nd housings 2 and 3 was constructed.

In this state, as shown in FIG. 4 (A), only the insulation coating 15 is first cut using a jig or the like at an intermediate portion (C1 portion) of a predetermined electric wire 6 installed between the housings 2 and 3. To do.
Next, the insulating coatings 15 and 15 that are cut and separated on the two housings 2 and 3 side are contracted so as to approach both sides, and the inner conductor 16 is exposed at the center (FIG. 5B). In this state, as shown in FIG. 2C, the two portions (C2 portion) on both sides near each insulating coating 15 are cut to cut the internal conductor 16 by a predetermined length.
Then, if the insulating coatings 15 and 15 that have shrunk to both sides are extended to their original lengths, the insulating coatings 15 and 15 extend beyond the ends of the cut inner conductors 16 as shown in FIG. Thus, an electric wire arrangement in which the inner conductor 16 is covered with the insulating coating 15 is obtained.

  As described above, according to the wiring arrangement and the wiring method of Embodiment 1, only the insulating coating 15 of the electric wire 6 to be cut is cut, and the cut insulating coating 15 is moved to the housings 2 and 3 on both sides. The inner conductor 16 is exposed by contraction, and the exposed inner conductor 16 is cut out by a predetermined length, and then the insulation coatings 15 on both housings 2 and 3 are extended to their original lengths. At the end portion of the electric wire 6 cut between the housings 2 and 3, the end portion of the inner conductor 16 is positioned inside the end portion of the insulating coating 15 and is protected by the insulating coating 15. Therefore, there is no possibility that the inner conductor 16 contacts the vehicle body or other mounted parts, or the inner conductors 16 contact each other, and even when the electric wire 6 is cut between the housings 2 and 3, it is disconnected. Thus, it is possible to effectively prevent a short circuit due to the electric wire 6. In addition, since no other member is used for protecting the cut electric wire 6, the structure is simplified, the cost is suppressed, and the projecting portions from the housings 2 and 3 are eliminated, and the handleability is excellent. In particular, in this embodiment, since only the inner conductor 16 from which the insulating coating 15 has been removed is cut off, there is an advantage that the disposal and recycling of the inner conductor 16 can be easily performed.

Hereinafter, other embodiments of the present invention will be described. However, since the structure of the press-contact joint connector is the same as that of the first embodiment, a redundant description will be omitted, and the configuration related to the wire cutting procedure in the wire wiring method will be mainly described.
[Form 2]
After press-contacting the electric wires 6, 6... Between the first and second housings 2 and 3 as in the first embodiment, as shown in FIG. 5 (A), first, an intermediate portion (C1 portion) of the predetermined electric wire 6 is set. Disconnect.
Next, at the ends of the wires that are cut and separated to the two housings 2 and 3 side, the insulating coating 15 is shrunk so as to move toward both sides to expose the internal conductors 16 and 16, respectively (see FIG. (B)). In this state, as shown in FIG. 3C, the internal conductors 16 are cut at the portions (C2 portions) near the insulating coatings 15 respectively.
Then, if the insulating coatings 15 and 15 that have shrunk to both sides are extended to their original lengths, the insulating coatings 15 and 15 extend beyond the ends of the cut inner conductor 16 as shown in FIG. Since it extends to an intermediate portion between the plates 4 and 4, an electric wire wiring body in which the inner conductor 16 is covered with the insulating coating 15 is obtained.

  As described above, also in the wiring arrangement and the wiring arrangement method of the above-described form 2, the electric wire 6 to be cut is cut at the intermediate portion, and the insulating coating 15 is provided at each end portion of the cut electric wire 6 in the housings 2 and 3, respectively. The inner conductor 16 is exposed by contracting to the side, the exposed inner conductors 16 and 16 are cut out by a predetermined length, and then the insulating coatings 15 on both the housings 2 and 3 are extended to their original lengths. As a result, at the end of the electric wire 6 cut between the two housings 2 and 3, the end of the inner conductor 16 is positioned inside the end of the insulating coating 15 and is protected by the insulating coating 15. . Therefore, it is possible to effectively prevent a short circuit due to the cut electric wire 6, suppress cost increase by simplifying the structure, improve handling, and further facilitate disposal and recycling by cutting only the internal conductor 16. The same effect as in the first mode can be obtained.

[Form 3]
After press-contacting the electric wires 6, 6... Between the first and second housings 2 and 3 as in the first and second embodiments, as shown in FIG. The insulating coating 15 is stretched to spread on both sides, and the insulating coating 15 is shifted to both sides.
Next, in a state where the insulating coating 15 is pulled, as shown in FIG. 5B, the wire 6 of the tensioned portion is cut at two locations (C1 portion) and cut out by a predetermined length.
Then, if the insulating coating 15 that has been pulled to both sides is extended to both sides at both ends of the electric wire 6, the insulating coating 15 forms the ends of the cut inner conductor 16 as shown in FIG. Since it extends beyond the intermediate portion between the plates 4 and 4, an electric wire arrangement in which the inner conductor 16 is covered with the insulating coating 15 is obtained.

  As described above, also in the wiring body and the wiring method according to the third aspect, the insulation coating 15 of the wire 6 to be cut is pulled toward the housings 2 and 3 on both sides, and the wire 6 is pulled at the tensioned portion. After the predetermined length is cut off, the insulating coatings 15 on both the housings 2 and 3 are returned to their original lengths, so that the inner conductor 16 is formed at the end of the electric wire 6 cut between the two housings 2 and 3. These end portions are located inside the end portions of the insulating coating 15 and are protected by the insulating coating 15. Therefore, it is possible to effectively prevent a short circuit due to the cut electric wire 6 and to obtain the same effects as those of Embodiments 1 and 2 such as suppression of cost increase due to simplification of the structure and improvement of handleability. In particular, in this embodiment, since the cutting process is only required once, there is an advantage that the working time relating to the wiring is shortened compared to other methods, and the electric wire wiring body can be easily obtained.

The number of receiving grooves and double terminals in each housing is not limited to the above form, and may be appropriately increased or decreased according to the number of electric wires and the form of the branch circuit. Of course, it is not necessary for the housing grooves and the number of double terminals to be the same between the housings, and the present invention can be applied even to pressure joint connectors having different types of housings.
On the other hand, the terminal to be used is not limited to a duplex terminal, but may be a multiple terminal such as a triple or quadruple. Further, the shift is not limited to one, and may be two or more. Furthermore, the arrangement of the terminals is not limited to a staggered pattern, and can be changed according to the design of the wiring, such as a partial staggered pattern, a straight line, or a middle gap.

It is a disassembled perspective view of the pressure welding joint connector of form 1. (A) is a perspective view of the double terminal of form 1, (B) shows the press-contact state of an electric wire. It is a perspective view after the assembly | attachment of the press-contact joint connector of the form 1 (before electric wire cutting). (A)-(D) are explanatory drawings which show the cutting procedure of the electric wire of form 1. FIG. (A)-(D) are explanatory drawings which show the cutting procedure of the electric wire of the form 2. FIG. (A)-(C) are explanatory drawings which show the cutting procedure of the electric wire of the form 3. FIG.

Explanation of symbols

  1 .... Pressure-welded joint connector, 2 .... first housing, 3 .... second housing, 4 .... plate, 5 .... cover, 6 .... electric wire, 7 .... partition wall, 8 .... receiving groove, 9 ....・ Press contact terminal (double terminal), 10 ・ ・ Terminal fitting, 15 ・ ・ Insulation coating, 16 ・ ・ Inner conductor.

Claims (4)

A plurality of electric wires are wired substantially in parallel between a pair of housings each accommodating the press contact terminals, and are pressed and fixed to the predetermined press contact terminals, and the predetermined electric wires are cut between the housings to form a branch circuit. A wire arrangement wired by a pressure welding joint connector,
In the end portion of the cut electric wire, the end portion of the inner conductor is located inside the end portion of the insulation coating. A crimping joint connector consisting of a pair of housings each accommodating a crimping terminal is set on the wiring board of the wire harness, and a plurality of electric wires are wired substantially in parallel between the housings and fixed to the respective crimping terminals. A wiring method for forming a branch circuit by cutting a predetermined electric wire between the housings,
Between the pair of housings, only the insulation coating of the wire to be cut is cut, the cut insulation coating is contracted to the housing sides on both sides to expose the inner conductor, and the exposed inner conductor is After the predetermined length is cut off, the wiring covering method is characterized in that the insulating coatings on both housing sides are extended to their original lengths. A crimping joint connector consisting of a pair of housings each accommodating a crimping terminal is set on the wiring board of the wire harness, and a plurality of electric wires are wired substantially in parallel between the housings and fixed to the respective crimping terminals. A wiring method for forming a branch circuit by cutting a predetermined electric wire between the housings,
The electric wire to be cut is cut at an intermediate portion of the pair of housings, and the inner conductor is exposed by contracting the insulating coating to the housing side at each end of the cut electric wire, and the exposed inner conductor is An electrical wiring method, wherein the insulation coatings on both housing sides are extended to their original lengths after being cut out by a predetermined length. A crimping joint connector consisting of a pair of housings each accommodating a crimping terminal is set on the wiring board of the wire harness, and a plurality of electric wires are wired substantially in parallel between the housings and fixed to the respective crimping terminals. A wiring method for forming a branch circuit by cutting a predetermined electric wire between the housings,
Between the pair of housings, the insulation coatings of the wires to be cut are pulled to the housing sides on both sides, and the insulation coatings on both housing sides are cut after cutting the wires by a predetermined length at the tensile portions. A wiring method, characterized by returning to the original length.

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