JPH0935766A - Termination work structure of cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable termination work structure which can shorten the overall length of a cable for heat radiation and can improve the heat radiation effect. SOLUTION: This is a cable termination work structure to crimp 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 in common to the crimping part 4a of a terminal 4, and the cable 8 for heat radiation is wound spirally around the cable 3 for circuit. Moreover, the cable 8 for heat radiation is made in the shape of a curled cord, and it is juxtaposed with the cable 3 for circuit, and the tips are fixed by a tape or are accommodated in a sheath material such as a corrugated tube or the like.

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 in which a core wire end of a circuit electric wire and a core wire end of a heat dissipation electric wire are commonly crimped to a crimp barrel of one terminal. The entire length of the electric wire can be shortened and the heat radiation effect can be improved.

[0002]

2. Description of the Related Art As shown in FIG. 4, a power supply circuit wire 3 for connecting an alternator 1 and a battery 2 mounted on a vehicle is, for example, as shown in FIG.
Is crimped onto the core wire crimping barrel 4a of the crimping terminal 4, 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 to 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, as shown in FIG. 5, a thick electric wire in which the core wire size d2 of the electric wire 3 is thicker than a normal size may be used.

However, in the first prior art, since the thick electric wire 3 having the increased size is used, the specification becomes over-specified and the cost is increased, and the electric wire 3 becomes thicker.
The crimp terminal of the normal size d1 cannot be crimped 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.
Coupling workability deteriorates and coupling performance also deteriorates.

Therefore, as in the second prior art shown in FIG. 6A, the core wire end 3a of the circuit wire 3 and the core wire end 5a of the heat dissipation dummy wire 5 of the required length L1. And the core wire crimping barrel 4a and the insulating coating barrel 4b of the crimping terminal 4 are double crimped to perform common crimping.

[0007]

However, FIG.
As shown in (B) and (C), tape 6 or the like is wound around the circuit electric wire 3 and the dummy electric wire 5 in order to bind the heat radiating dummy electric wire 5 to the circuit electric wire 3. There is a problem that the surface area is reduced and the heat dissipation effect is halved. Further, as shown in FIG. 7, 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 join the circuit electric wire 3 with the connector 7, so that the connector becomes large and the dummy electric wire is formed. Since it is necessary to engage the terminals with each other, there are problems such as an increase in the number of parts and labor required.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric wire end treatment structure capable of shortening the apparent overall length of a heat dissipation wire and improving the heat dissipation effect. It is what

[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. There is provided an end treatment structure for an electric wire which is commonly crimped by double crimping, wherein the heat dissipation electric wire is spirally wound around an outer periphery of a circuit electric wire.

According to the above-mentioned invention, since the heat-radiating electric wire, which is commonly crimped to the circuit electric wire and the terminal, is spirally wound and held around the circuit electric wire, it is not necessary to wind the tape as in the conventional case. Instead, the entire outer peripheral surface of the heat dissipation wire is exposed, and the heat dissipation effect can be enhanced. Also, if the apparent total length (mounting length) of the heat dissipation wire is the same as the conventional one, the length of the heat dissipation wire will be several percent (several times depending on the pitch) longer than the straight shape. The total length of the heat dissipation wire can be increased, and the heat dissipation effect can be improved.

Further, according to the present invention, in claim 2, an end treatment structure of an electric wire in which a terminal of a core wire of a circuit electric wire and an end of a core wire of a heat dissipation electric wire are commonly crimped to a crimp barrel of one terminal by double crimping. Further, there is provided an end treatment structure of an electric wire, characterized in that the heat radiating electric wire is wound in a curl cord shape, and the end of the electric wire is wound around a circuit electric wire with a band or a tape.

When the heat-radiating electric wire is formed into a curl cord shape as described above, the electric wire length can be increased as in the case of spirally winding around the circuit electric wire. Further, when the free end of the curled cord-shaped electric wire is taped or band-fastened to the circuit electric wire, the heat dissipation effect can be improved as compared with the conventional case where the heat dissipation electric wire is taped over the entire length. it can.

The heat-radiating dummy electric wire wound in a curl cord shape may be arranged in parallel with the circuit electric wire to be housed inside an exterior member composed of a golgate tube and a protector.

When a curl cord-shaped electric wire is arranged in parallel with a circuit electric wire, if the heat-radiating electric wire is also held by a protector or a corrugated tube that is externally mounted on the circuit electric wire, the heat-radiating effect can be obtained rather than the conventional method of holding it by tape winding. Can be prevented from decreasing.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail based on the illustrated embodiments. FIG. 1 shows a first embodiment, in which a core wire end 3a of a circuit electric wire 3 and a core wire end 8a of a dummy electric wire 8 for heat dissipation are subjected to common crimping by a crimping terminal 4 core wire crimping barrel 4a by double crimping, In addition, the insulation coating of the circuit electric wire 4 and the dummy electric wire 8 is also crimped by the insulation coating crimp barrel 4b to perform common crimping. As shown in FIG. 1 (B), the length L2 of the electric wire itself (straight shape) of the dummy electric wire 8 is several tenths to several times the required total length L1 (see FIG. 1) of the dummy electric wire 8. It is set.

Before the crimping of the end 8a of the core wire to the crimping terminal 4, the dummy electric wire 8 is wound in a curl cord shape (spiral shape) in advance so as to have a curl cord-like habit. The curled cord-shaped electric wire is preferably cut and used. When the pitch P of the curl cord (see FIG. 1) is large, the length L2 of the electric wire itself is about several tenths of the total length L of the dummy electric wire 8, but the pitch P is small and close to close winding. , The length L2 of the electric wire itself is several times as long as the total length L1 of the dummy electric wire 8.

Dummy electric wire 8 wound in a curl cord shape
Are arranged side by side with the circuit electric wire 3 in the curl cord shape, and the other end 8b is fixed to the circuit electric wire 3 with the insulating tape 9.

In the configuration of the first embodiment, since the dummy electric wire 8 is wound in a curl cord shape, it is assumed that the dummy electric wire 5 has the same overall length L1 as the dummy electric wire 5 of the second prior art (see FIG. 5). For example, the curl cord shape is several ten to several times longer than the straight shape, so the heat dissipation effect is significantly improved. Further, when it is sufficient to maintain the heat radiation effect at the same level, the total length L1 of the dummy electric wire 8 can be shortened. Further, since the dummy electric wire 8 is not covered with the tape over the entire length unlike the second conventional example, the heat dissipation effect is excellent.

FIG. 2 shows a modified example of the first embodiment. The dummy electric wire 8 has the same curl cord shape as that of the first embodiment, and the dummy electric wire 8 is covered with the circuit electric wire 3 by a corrugated tube 10. . In this way, holding both electric wires 3, 8 with the corrugated tube 10 does not reduce the heat radiating surface area of the dummy electric wire 8 as compared with the case where the insulating tape 6 is wound to bind the both electric wires 3, 5, so that the heat radiating effect is improved. Reduction can be prevented.

FIG. 3 shows a second embodiment, in which the dummy electric wire 8
The wire itself is spirally wound around the outer circumference of the circuit electric wire 3.
Needless to say, the curl-code-shaped dummy electric wire 8 of the first and second embodiments may be spirally wound around the circuit electric wire 3. While the dummy electric wire 8 is curled and wound around the circuit electric wire 3 in a spiral shape,
Is held, connect the free end of the dummy wire 8 to the circuit wire 3
There is no need to stop at. If the dummy electric wire 8 is wound around the circuit electric wire 3 in a spiral shape and the dummy electric wire 8 may be unwound, the free end of the dummy electric wire 8 is attached to the circuit electric wire 3 with the tape 9. It's wrapped around and stopped.

According to the configuration of the second embodiment, since the dummy electric wire 8 is wound around the circuit electric wire 3 and held, it is not necessary to hold the dummy electric wire 8 by the corrugated tube 10 or the protector as in the second embodiment. , The cost will be lower.

In each of the above-described embodiments, even when the total length L1 of the dummy electric wire 8 becomes extremely long as in the prior art of FIG. 6, the total length L1 is set by the curl cord-shaped dummy electric wire 8.
Since it can be shortened, it is not necessary to connect with the circuit electric wire 3 with the connector 7.

[0023]

As is apparent from the above description, the wire end treatment structure of the present invention has a structure in which a heat dissipation wire is wound in a curl cord shape, or spirally wound around a circuit wire. Therefore, the length of the heat dissipation dummy electric wire itself can be made longer than that of the straight shape. Therefore, if the heat radiation effect is improved and the heat radiation effect is equal, the apparent length (mounting length) of the heat radiation wire can be shortened.

Further, unlike the conventional case, since the entire length of the heat radiating dummy electric wire is not covered with a tape, the heat radiating property of the heat radiating dummy electric wire can be improved.

[Brief description of drawings]

1A and 1B are a wire end treatment structure according to a first embodiment of the present invention, FIG. 1A is a perspective view of the first embodiment, and FIG. 1B is a perspective view showing a length of a dummy heat radiation wire.

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

FIG. 3 is a perspective view of a second embodiment.

FIG. 4 is a circuit diagram of an alternator mounted on a vehicle.

FIG. 5 is a perspective view of a first conventional technique.

6A is a perspective view of a second conventional technique, FIG. 6B is a perspective view of the second conventional technique in which a tape is wound, and FIG.
FIG.

FIG. 7 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 4 Crimp terminal 4a Core wire crimp barrel 8 Heat dissipation (dummy) wire 8a Core wire

Claims (2)

[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. An end treatment structure for an electric wire, which is spirally wound around the outer circumference of the electric wire for a circuit. 2. An end treatment structure of an electric wire, wherein a terminal of a core wire of a circuit wire and an end of a core wire of a heat dissipation wire are commonly crimped to a crimp barrel of one terminal by double crimping, wherein the heat dissipation wire is An end treatment structure for an electric wire, which is wound in a curl cord, and the end of the end is wrapped around a wire or tape for a circuit to be fastened.