JP3022261B2 - Wire termination structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire terminal treatment structure for crimping a terminal of a core wire of a circuit wire and a terminal of a core wire of a heat radiation wire to a crimp barrel of one terminal in common. This is to improve the heat radiation effect of the heat radiation wire.

[0002]

2. Description of the Related Art As shown in FIG. 6, a power supply circuit wire 3 for connecting an alternator 1 mounted on a vehicle and a battery 2 is, for example, as shown in FIG. The terminal 4 is connected to a power supply section of the alternator 1 by bolts (not shown).

[0003] Since a large current is supplied from the alternator 1, the connection between the power supply section of the alternator 1 and the terminal 4 generates heat. Further, the connection generates heat even when the heat stored in the alternator 1 is conducted.

In order to suppress the heat generation at the connection portion, as a first prior art, a thick electric wire in which the core wire size d1 of the electric wire 3 is larger than a normal size may be used.

However, in the first prior art, since the thick electric wire 3 with an increased size is used, the cost is increased due to over specification, and the electric wire 3 becomes thicker.
A crimp terminal of a normal size cannot be crimped to the other terminal.
Therefore, the connection between the crimp terminals to other wires or fusible link blocks, etc., which had been connected via the connector, must be connected to the bolted terminals, which deteriorates the workability of the connection and the connection performance. Also gets worse.

For this reason, as in the second prior art shown in FIG. 8A, the terminal 3a of the core wire of the circuit wire 3 and the heat-radiating wire (hereinafter referred to as the dummy wire 5) having a required total length L1 are formed. A crimping terminal 5a and a crimping terminal 4a of the crimping terminal 4 are double crimped by a core crimping barrel 4a and an insulating coating barrel 4b to perform common crimping.

[0007]

However, since the wires 3 and 5 crimped together are connected to the vicinity of the drive section of the alternator 1, the other ends of the wires 3 and 5 are free.
Must be prevented from interfering with other members such as the drive mechanism of the alternator 1. Therefore, conventionally, FIG.
(B) As shown in (C), the circuit electric wire 3 and the dummy electric wire 5 are used to bind the heat-dissipating dummy electric wire 5 to the circuit electric wire 3.
Are wrapped with a tape 6 or the like, which causes a problem that the heat radiation surface area of the dummy electric wire 5 is reduced and the heat radiation effect is halved. Further, as shown in FIG. 9, if the total length L1 of the dummy wires 5 is increased in order to enhance the heat radiation effect, it is necessary to connect the dummy wires 5 together with the circuit wires 3 by the connector 7.
In addition to the increase in the size of the connector, it is necessary to engage the dummy wires with the terminals, which causes problems such as an increase in the number of parts and an increase in the number of work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an object to provide a terminal treatment structure of an electric wire in which the heat radiation surface area of the heat radiation wire is not reduced by tape winding or the like, and the heat radiation effect can be improved. It is intended to be.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a terminal of a core wire of a circuit wire and a terminal of a core wire of a heat dissipation wire are connected to a crimp barrel of one terminal. As a terminal treatment structure for electric wires that are crimped in common by double caulking, the above-mentioned heat-dissipating wires are installed side by side with the circuit wires, and are housed together with the circuit wires inside the exterior material such as resin tubes, corrugated tubes, and protectors at both ends. In addition, the present invention provides an electric wire terminal treatment structure in which a gap is provided between an inner periphery of an exterior material and a heat radiation wire.

As described above, if the heat-dissipating wires are housed and held together with the circuit wires in the sheathing material, and if a gap is provided between the sheathing material and the heat-dissipating wires, the conventional tape will be in close contact. And holding it to the circuit wire,
The surface area of the heat dissipation wire is not reduced. Therefore,
The heat radiation effect can be enhanced.

The resin tube having both ends opened is a resin sheet made of a large-diameter cylindrical material having both ends opened, and a part of the resin tube is wound around a heat-dissipating electric wire and a circuit electric wire which are inserted therein with a tape or a band. It is preferable to fix it.
(Claim 2)

As described above, when openings are provided at both ends of the resin tube, heat radiated into the tube through the insulating coating of the heat radiating wire is further radiated into the atmosphere from both ends of the tube. Efficiency can be further improved.

In the third aspect, the heat-dissipating wire is inserted into a large-diameter resin tube having openings at both ends with a gap therebetween, and the resin tube having the heat-dissipating wire inserted is taped to a circuit wire. Alternatively, there is provided an electric wire terminal treatment structure in which a part is wound and fixed by a band.

When the heat-dissipating wire is inserted into the large-diameter tube with a gap as described above, the heat-dissipating effect of the heat-dissipating wire is achieved, and a part of the tube is connected to the circuit wire by a band or tape. Because of the holding, the heat radiating wire can be held securely.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. 1A and 1B show a first embodiment,
The terminal 3a of the core wire of the circuit wire 3 and the terminal 8a of the core wire of the heat dissipation wire (hereinafter referred to as the dummy wire 8) are crimped together by double crimping with the core crimp barrel 4a of the crimp terminal 4, and The insulating coating of the electric wire 4 and the dummy electric wire 8 is also crimped by the insulating coating crimp barrel 4b and crimped in common.

The circuit electric wire 3 and the dummy electric wire 8 are housed inside the exterior material 10 in a state where they are juxtaposed with each other, and a gap 11 is formed between the inner periphery of the exterior material 10 and the dummy electric wire 8. Like that.

In the first embodiment, a resin tube 1 is used as an exterior material 10 in which a resin sheet material is a large-diameter cylindrical material having both ends opened.
5 is used. The resin tube 15 has terminals 3a, 8a
The length is set so as to cover the entire area from the vicinity of the crimp terminal 4 to the rear end of the other side of the dummy wire 8. In addition, the resin tube 15 has a rear end 15a wound and fixed around a tape 16 together with the circuit wires 3 and the dummy wires 8. Note that, instead of the tape 16, it may be fixed by an elastic band.

According to the first embodiment, as shown in FIG. 1B, the circuit wires 3 and the dummy wires 8 are loosely inserted into the resin tube 15. As a result, a gap 11 is formed in the outer periphery of the dummy electric wire 8, so that the surface area of the heat-dissipating dummy electric wire 5 is reduced as in the case where the outer periphery is taped and held together with the circuit electric wire shown in the conventional example. Will not be done. In addition, since the resin tube 15 has only the rear end 15a fixed to the wires 3 and 8 and the front end side is open, the heat radiated into the resin tube 15 through the insulating coating of the dummy wire 8 is:
Dissipated into the atmosphere through the front end opening.

Therefore, the heat radiation effect can be enhanced without increasing the total length of the dummy wires 8. In addition, since the heat can be efficiently radiated, the dummy electric wire 8 has the same heat radiation as compared with the conventional terminal processing structure.
Can have a shorter overall length or a smaller diameter.

FIG. 2 shows a modified example of the first embodiment. In this modified example, a resin tube 1 used as the exterior material 10 is used.
5, a large number of insertion holes 15b are provided in the surface of the resin tube 15.
Also, heat can be radiated to the outside from 5b. Therefore,
According to the above modification, the heat radiation effect can be further enhanced.

FIG. 3 shows a second embodiment. In the second embodiment, instead of the resin tube 15, a corrugated tube 20 which repeats a corrugated shape in a bellows shape along the length direction is used as the exterior material 10. I have. According to the second embodiment, since the dummy wires 8 are accommodated in the corrugated tube 20 in the loosely inserted state, the heat radiation effect can be enhanced as in the first embodiment, and the drive mechanism of the alternator 1 and the like Damage to the circuit wires 3 and the dummy wires 8 due to interference with other members can be reliably prevented.

FIG. 4 shows a third embodiment. In the third embodiment, the circuit electric wire 3 and the dummy electric wire 8 are accommodated in a resin protector 25 having a concave cross section as an exterior material 10. Like that. The above protector 25
Are side walls 25b, 25b protruding from both sides of the bottom plate 25a.
A slit 25c of a required width is provided from the upper end of the wire, and the outer circumference is wound around the slit 25c with a tape 26 to fix the wires 3, 8 and the protector 25.

FIG. 5 shows a fourth embodiment. In the fourth embodiment, the circuit electric wire 3 is made up of an exterior material 1 such as a resin tube 15.
0, only the dummy wires 8 are accommodated in the resin tube 15. Also,
The resin tube 15 accommodating the dummy electric wire 8 and the circuit electric wire 3 are fixed by winding a tape 16 on both sides in the length direction with a tape.

According to the fourth embodiment, the dummy electric wire 3
Since both ends of the resin tube 15 accommodating the resin are open, air can flow through the inside of the resin tube 15. Therefore, the heat radiated from the dummy wires 8 can be efficiently radiated to the outside of the resin tube 15.

Note that the present invention is not limited to the above configuration. For example, in the above-described embodiment, the outer casing is formed to have a length covering the vicinity of the crimp terminal of the terminal of the electric wire to the other end of the dummy electric wire. However, it may be mounted so as to cover only a part of the circuit wires and the dummy wires.

[0026]

As is apparent from the above description, in the electric wire terminal treatment structure of the first aspect of the present invention, the heat radiating electric wire is accommodated and held in the exterior material together with the circuit electric wire.
Since the gap is provided on the outer periphery of the dummy electric wire, the heat radiation surface area does not decrease. Therefore, the heat radiation effect can be enhanced without increasing the total length of the heat radiation wire as in the conventional example. Further, since it is not necessary to lengthen the entire length of the heat radiating wire, it is possible to prevent various problems that occur with it.

In the structure for terminating an electric wire according to claim 2, a resin tube having both ends opened is used as an exterior material, and a part of the resin tube is fixed with a tape or a band.
The heat radiated into the tube through the insulating coating of the dummy wire is radiated into the atmosphere from the opening of the resin tube. Therefore, the heat radiation efficiency can be further improved.

Also, in the terminal treatment structure of the third aspect, since the heat-dissipating electric wire is inserted through the tube with a gap, the heat-dissipating effect can be enhanced.

[Brief description of the drawings]

FIG. 1 is an end treatment structure of an electric wire according to a first embodiment of the present invention, where (A) is a perspective view and (B) is a cross-sectional view taken along the line II of (A).

FIG. 2 is a perspective view showing a modification of the first embodiment.

FIG. 3 is a perspective view showing an electric wire terminal processing structure according to a second embodiment.

FIG. 4 is a perspective view showing a wire terminal processing structure according to a third embodiment.

FIG. 5 shows an electric wire terminal processing structure according to a fourth embodiment;
(A) is a perspective view, (B) is a II-II sectional view of (A).

FIG. 6 is a circuit diagram of an alternator mounted on a vehicle.

FIG. 7 is a perspective view of a first related art.

8A is a perspective view of the second conventional technique, FIG. 8B is a perspective view of the second conventional technique wound with a tape, and FIG. 8C is a cross-sectional view of FIG.

FIG. 9 is a perspective view of a prior art in which the entire length of a dummy wire is long.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Circuit electric wire 3a Core wire end 4 Crimp terminal 4a Core wire crimp barrel 8 Heat dissipation (dummy) wire 8a Core wire end 10 Exterior material 11 Air gap 15 Resin tube 20 Corrugated tube 25 Protector

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-220787 (JP, A) JP-A 8-222283 (JP, A) JP-A 8-222285 (JP, A) JP-A 9-220 35766 (JP, A) Fully open sho 59-31159 (JP, U) Fully open sho 61-83278 (JP, U) Fully open flat 3-94019 (JP, U) Fully open sho 63-149016 (JP, U) Japanese Utility Model Application Hei 1-77275 (JP, U) Japanese Utility Model Application Hei 4-54427 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 4/18 H02G 3/03-3/04

Claims (3)

(57) [Claims] A terminal treatment structure for an electric wire in which a terminal of a core wire of a circuit wire and a terminal of a core wire of a heat dissipation wire are crimped to a crimping barrel of one terminal by double caulking and common crimping. Along with the circuit wire, it is housed together with the circuit wire inside the exterior material such as a resin tube, corrugated tube or protector with openings at both ends, and a gap is provided between the inner periphery of the exterior material and the heat dissipation wire. A terminal treatment structure for electric wires. 2. The resin tube having both ends opened is a resin sheet made of a large-diameter cylindrical material having both ends opened, and a tape or a band is used for a heat-dissipating wire and a circuit wire inserted therein. The terminal treatment structure for an electric wire according to claim 1, wherein the wire is wound and fixed. 3. A terminal treatment structure for an electric wire in which a terminal of a core wire of a circuit wire and a terminal of a core wire of a heat radiation wire are crimped to a crimping barrel of one terminal by double crimping and common crimping. The heat-dissipating wire is inserted into the resin tube with a gap, and the resin tube having the heat-dissipating wire inserted is fixedly wound around a circuit wire with a tape or a band. Characteristic wire termination structure.