JPH0935767A - Termination work structure of cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the reduction of the area of the heat-radiating surface of a cable for heat radiation caused by winding of a tape, etc., and improve heat radiation effect, by arranging the constitution such that a cable for heat radiation is housed and retained in a sheath material together with a cable for circuit, and that space is provided around the cable for heat radiation. SOLUTION: For this cable termination work structure, the terminal 3a of the core of a cable 3 for circuit and the terminal 8a of the core of a cable 8 for heat radiation are crimped in common by double calking to the crimping barrel 4a of one terminal 4. The following means is added to this constitution. The cable 8 for heat radiation is juxtaposed with the cable 3 for circuit, and it is housed together with the cable 3 for circuit inside a sheath material 10 such as a resin tube 15 both whose sides are open, a corrugated tube, or a protector, etc., and also space 11 is provided between the periphery of the sheath material 10 and the cable 8 for heat radiation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire end treatment structure for commonly crimping a core wire end of a circuit electric wire and a core wire end of a heat dissipation electric wire to a crimp barrel of one terminal. It is intended 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 circuit electric wire 3 for connecting an alternator 1 and a battery 2 mounted on a vehicle has, for example, a terminal 3a of a core wire and a crimp terminal 4 as shown in FIG. The core 4 is crimped onto the core crimping barrel 4a, and the terminal 4 is connected to the power feeding portion of the alternator 1 with a bolt (not shown).

Since a large current is fed from the alternator 1, the connecting portion between the feeding portion of the alternator 1 and the terminal 4 generates heat. Further, even if the heat that is contained in the alternator 1 is conducted, the connecting portion generates heat.

In order to suppress the heat generation of the connecting portion, as a first conventional technique, there is used a thick electric wire in which the core wire size d1 of the electric wire 3 is thicker than a normal size.

However, in the first prior art, since the thick electric wire 3 which is size-up is used, the specification is increased and the cost is increased, and the electric wire 3 becomes thicker.
You cannot crimp a normal size crimp terminal to the other terminal.
Therefore, it is necessary to connect the crimp terminals with other electric wires, fusible link blocks, etc., which were connected via the connector, with the bolted terminals, which deteriorates the connection workability and the connection performance. Also gets worse.

Therefore, as in the second prior art shown in FIG. 8A, the core wire end 3a of the circuit electric wire 3 and the heat radiating electric wire of the required total length L1 (hereinafter referred to as the dummy electric wire 5) are provided. There is provided one in which the core wire end 5a and the core wire crimping barrel 4a and the insulating coating barrel 4b of the crimping terminal 4 are subjected to double crimping for common crimping.

[0007]

However, since the electric wires 3 and 5 which are commonly crimped are connected in the vicinity of the drive portion of the alternator 1, the other end of the dummy electric wire 5 is free.
However, it must be prevented from interfering with other members such as the drive mechanism of the alternator 1. Therefore, in the conventional case, as shown in FIG.
(B) As shown in (C), in order to bind the dummy electric wire 5 for heat radiation to the electric wire 3 for circuit, the electric wire 3 for circuit and the dummy electric wire 5
And are wound with the 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 reduced by half. Further, as shown in FIG. 9, if the total length L1 of the dummy electric wire 5 is increased in order to enhance the heat dissipation effect, it is necessary to connect the dummy electric wire 5 with the circuit electric wire 3 by the connector 7,
As the size of the connector increases, it is necessary to engage the dummy electric wires with each other, resulting in an increase in the number of parts and labor.

The present invention has been made in order to solve the above problems, and provides an end treatment structure of an electric wire which can improve the heat radiating effect without reducing the heat radiating surface area of the heat radiating electric wire due to tape winding or the like. The purpose is to do.

[0009]

In order to achieve the above object, according to claim 1 of the present invention, the end of the core wire of the circuit wire and the end of the core wire of the heat dissipation wire are connected to a crimp barrel of one terminal. As a terminal treatment structure for the wires that are commonly crimped by double staking, the heat dissipation wires are installed side by side with the circuit wires, and are housed together with the circuit wires inside the exterior materials such as resin tubes, corrugated tubes, protectors, etc. with openings at both ends. A terminal treatment structure for an electric wire is provided, wherein a gap is provided between the inner circumference of the exterior material and the heat radiating electric wire.

As described above, if the heat dissipation wire and the circuit wire are accommodated and held in the exterior material and a space is provided between the exterior material and the heat dissipation wire, the conventional tape is adhered. As if it were wrapped around and held on a circuit wire,
The surface area of the heat dissipation wire is not reduced. Therefore,
The heat dissipation effect can be enhanced.

The resin tube having openings at both ends is made of a resin sheet material having a large-diameter cylindrical material having openings at both ends. A part of the resin tube is wound with a tape or band around the heat radiating electric wire and the circuit electric wire. It is preferable to fix it.
(Claim 2)

As described above, when the openings are provided at both ends of the resin tube, the heat radiated into the tube through the insulating coating of the heat radiation wire is further radiated to the atmosphere through the openings at both ends of the tube, so that the heat is radiated. The efficiency can be further increased.

According to a third aspect of the present invention, the heat radiation electric wire is inserted into the large diameter resin tube having openings at both ends with a gap, and the resin tube having the heat radiation electric wire inserted is taped to a circuit electric wire. Alternatively, the present invention provides an end treatment structure for an electric wire, which is characterized in that a part thereof is wound and fixed by a band.

When the heat dissipation wire is inserted into the large-diameter tube with a gap as described above, the heat dissipation effect of the heat dissipation wire is obtained, and a part of the tube is applied to the circuit wire by a band or tape. Since it is held, the heat radiation wire can be held reliably.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings. 1A and 1B show the first embodiment,
The core wire end 3a of the circuit electric wire 3 and the core wire end 8a of the heat dissipation electric wire (hereinafter referred to as the dummy electric wire 8) are commonly crimped by double crimping with the core wire crimping barrel 4a of the crimping terminal 4, and for the circuit. The insulation coating of the electric wire 4 and the dummy electric wire 8 is also crimped by the insulation coating crimp barrel 4b to perform common crimping.

The circuit electric wire 3 and the dummy electric wire 8 are accommodated inside the outer casing 10 in a state of being arranged side by side, and a space 11 is formed between the inner periphery of the outer casing 10 and the dummy electric wire 8. I am trying.

In the first embodiment, a resin tube 1 in which a resin sheet material is used as the exterior material 10 and a large-diameter cylindrical material having openings at both ends is used.
5 is used. The resin tube 15 has terminals 3a and 8a.
The length is set to cover the entire area from the vicinity of the crimp terminal 4 to the rear end of the dummy electric wire 8 on the other side. Further, the resin tube 15 has a rear end portion 15a fixed by winding the outer circumference thereof with a tape 16 together with the circuit electric wire 3 and the dummy electric wire 8. Instead of the tape 16, a band having elasticity may be used for fixing.

According to the first embodiment, as shown in FIG. 1B, the circuit electric wire 3 and the dummy electric wire 8 are loosely inserted in the resin tube 15. As a result, a space 11 is formed on the outer circumference of the dummy electric wire 8, so that the surface area of the dummy electric wire 5 for heat dissipation is reduced as in the case where the outer circumference of the dummy electric wire 8 is tape-wrapped and held. It will not be done. Further, since the resin tube 15 is fixed to the electric wires 3 and 8 only at the rear end portion 15a and is opened at the front end side, heat radiated into the resin tube 15 through the insulating coating of the dummy electric wire 8 is
Emitted from the front opening into the atmosphere.

Therefore, the heat radiation effect can be enhanced without increasing the total length of the dummy electric wire 8. Further, since the heat can be efficiently dissipated, the dummy electric wire 8 is used when the amount of heat dissipated is the same as that of the conventional terminal treatment structure.
It is possible to use the one whose length is short or whose diameter is thin.

FIG. 2 shows a modification of the first embodiment. In this modification, a resin tube 1 used as the exterior material 10 is used.
5. A large number of insertion holes 15b are provided on the surface of 5, so that the heat radiated from the dummy electric wire 8 into the resin tube 15 can be prevented
The heat is also radiated to the outside from 5b. Therefore,
According to the above modification, the heat dissipation effect can be further enhanced.

FIG. 3 shows a second embodiment. In the second embodiment, as the exterior material 10, a corrugated tube 20 which repeats bellows-like irregularities along the length direction is used instead of the resin tube 15. There is. According to the second embodiment, since the dummy electric wire 8 is accommodated in the corrugated tube 20 in a loosely inserted state, it is possible to enhance the heat dissipation effect as in the first embodiment, and at the same time, drive mechanism for the alternator 1 and the like. It is possible to reliably prevent damage to the circuit electric wire 3 and the dummy electric wire 8 due to interference with other members.

FIG. 4 shows a third embodiment. In the third embodiment, as the exterior material 10, the circuit electric wire 3 and the dummy electric wire 8 are housed inside a resin protector 25 having a concave cross section. I am trying. The protector 25
Are side walls 25b, 25b projecting from both sides of the bottom plate portion 25a.
A slit 25c having a required width is provided from the upper end of the wire, and the outer periphery is wound with a tape 26 through the slit 25c to fix the wires 3 and 8 and the protector 25.

FIG. 5 shows a fourth embodiment. In the fourth embodiment, the electric wire 3 for a circuit is an exterior material 1 such as a resin tube 15.
However, the dummy electric wire 8 is only accommodated inside the resin tube 15 without being accommodated inside the resin tube 15. Also,
The resin tube 15 accommodating the dummy electric wire 8 and the electric wire 3 for a circuit are fixed by winding a tape 16 on both sides in the length direction.

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 circulate inside the resin tube 15. Therefore, the heat radiated from the dummy electric wire 8 can be efficiently radiated to the outside of the resin tube 15.

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

[0026]

As is apparent from the above description, in the electric wire end treatment structure according to the first aspect of the present invention, the heat radiating wire is accommodated and held in the outer casing together with the circuit electric wire.
Since the air gap is provided on the outer circumference of the dummy electric wire, the heat radiation surface area is not reduced. Therefore, unlike the conventional example, the heat dissipation effect can be enhanced without increasing the total length of the heat dissipation wire. Further, since it is not necessary to increase the total length of the heat radiation wire, various problems that accompany it can be prevented.

In the electric wire terminal treatment structure of claim 2, since the resin tube having openings at both ends is used as the 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 electric wire is radiated into the atmosphere from the opening of the resin tube. Therefore, the heat dissipation efficiency can be further improved.

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

[Brief description of drawings]

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

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

FIG. 3 is a perspective view showing an end treatment structure for an electric wire according to a second embodiment.

FIG. 4 is a perspective view showing an electric wire terminal treatment structure according to a third embodiment.

FIG. 5 shows an end treatment structure for an electric wire 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 conventional technique.

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

FIG. 9 is a perspective view of a conventional technique in which a dummy wire has a long total length.

[Explanation of symbols]

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

Claims (3)

[Claims] 1. A wire end treatment structure in which a core wire end of a circuit wire and a core wire end of a heat dissipation wire are commonly crimped to a crimp barrel of one terminal by double crimping. Installed in parallel with the circuit wire, housed together with the circuit wire inside the outer material such as resin tube, corrugated tube or protector with openings at both ends, and providing a gap between the inner circumference of the outer material and the heat dissipation wire. An end treatment structure for electric wires, which is characterized in that 2. The resin tube having openings at both ends is made of a resin sheet material having a large-diameter cylindrical material having openings at both ends, and a part of the heat dissipation electric wire and the circuit electric wire inserted therein is a tape or band. The wire end treatment structure according to claim 1, wherein the wire is wound and fixed. 3. A wire end treatment structure in which a core wire end of a circuit wire and a core wire end of a heat dissipation wire are commonly crimped to a crimp barrel of one terminal by double crimping, and a large diameter of both end openings is provided. Insert the above-mentioned heat dissipation wire inside the resin tube with a gap, and fix the resin tube in which the heat dissipation wire is inserted around the circuit wire with a tape or band. Characteristic electric wire terminal treatment structure.