JP5900916B2 - Connection method and electric wire with terminal - Google Patents

Description

  The present invention relates to a connection method and a terminal-attached electric wire, and in particular, a connection method for connecting a fiber conductor formed by twisting a plurality of conductors plated with a conductive metal on the surface of a fiber, and a terminal fitting, and The present invention relates to an electric wire with a terminal provided with fiber conductors connected to each other using a connection method and a terminal fitting.

  Conventional electric wires are mainly used as a core wire by twisting a plurality of copper wires. In order to increase the tensile strength, weight reduction, and bendability of the wire using a copper wire as the core wire, a plurality of conductors plated with a conductive metal such as copper on the surface of the fiber were twisted. The thing which uses a fiber conductor as a core wire is considered.

  And as a method of connecting a terminal metal fitting to the end part of such a fiber conductor, the method of crimping | bonding a fiber conductor to a terminal metal fitting can be considered like the conventional copper wire (patent document 1). However, although the fiber electric wire has a strong force in the pulling direction, one wire and one wire are extremely thin, and therefore, it is weak in the shearing direction. Therefore, the connection method by pressure bonding has a problem that the fiber conductor may be cut at the time of pressure bonding.

  In addition, a connection method in which a fiber conductor is wound around a terminal fitting and then soldered to connect is proposed (Patent Document 2). However, in this connection method, the electrical and mechanical connection between the fiber conductor and the terminal metal fitting cannot be achieved simply by winding the fiber conductor. There was a problem in terms of cost because it was necessary to do this.

Japanese Patent Laid-Open No. 9-223523 Special table 2009-518790 gazette

  Accordingly, the present invention provides a connection method capable of reliably and inexpensively connecting a fiber conductor and a terminal fitting, and a terminal provided with the fiber conductor and the terminal fitting connected using the connection method. It is an object to provide an electric wire.

In order to solve the above-mentioned problem, the invention according to claim 1 is a connection for connecting a fiber conductor formed by twisting a plurality of conductors plated with a conductive metal on the surface of a fiber, and a terminal fitting. In the method, the fiber conductor is inserted into a plurality of holes arranged in a longitudinal direction provided in the terminal metal fitting so that the fiber conductor floats and crosses with respect to the terminal metal fitting, and the fiber is inserted. The fiber conductor and the terminal fitting are mechanically and electrically connected only by the frictional force generated between the fiber conductor and the terminal fitting by braiding the conductor into the terminal fitting and pulling the fiber conductor. The connection method is characterized by the above.

The invention according to claim 2 is characterized in that the terminal fitting is provided with a plurality of communication holes extending from each of the plurality of holes to an end portion in a short direction of the terminal fitting. It exists in the connection method of claim | item 1.
According to a third aspect of the present invention, each of the plurality of communication holes extends from the distal end side of the hole in the longitudinal direction to the mating connector connection side to an end portion in the short direction of the terminal fitting, The connection method according to claim 2, wherein the communication hole does not extend from a rear end side in the longitudinal direction to an end portion in a short direction of the terminal fitting.
According to a fourth aspect of the present invention, the fiber conductor is sequentially inserted into the plurality of holes toward the distal end side that is the counterpart connector connection side in the longitudinal direction, and then folded back to the rear end side in the longitudinal direction. The connection method according to any one of claims 1 to 3, wherein the holes are sequentially inserted into the plurality of holes.

  As described above, according to the first aspect of the present invention, the fiber conductor is inserted into the plurality of holes provided in the terminal metal fitting so that the fiber conductor floats and crosses with respect to the terminal metal fitting. By weaving the terminal fitting, friction is generated between the fiber conductor and the terminal, and the fiber conductor and the terminal fitting are mechanically and electrically connected by this frictional force. Accordingly, the fiber conductor and the terminal fitting can be reliably and inexpensively connected without soldering or the like. In addition, since the fiber conductor is highly flexible, it can be easily tightened when braided, and almost no force is generated after knitting, so the fiber conductor and the terminal fitting can be connected more reliably. it can.

According to the invention of claim 2 or 3 , since the fiber conductor can be inserted into the plurality of holes through the communication hole extending to the end of the terminal fitting, the fiber conductor is easily knitted. be able to.

According to the fourth aspect of the present invention, the mechanical and electrical connection between the fiber conductor and the terminal fitting can be more firmly performed by folding and braiding.

(A) is a top view in one Embodiment of the electric wire with a terminal of the present invention, and (B) is an AA line sectional view of (A). (A) is a perspective view of the electric wire shown in FIG. 1, (B) is a front view of (A), and (C) is a perspective view of the conductor shown in (B). It is sectional drawing of the electric wire with a terminal in other embodiments.

  Hereinafter, a connection method and a terminal-attached electric wire according to the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the electric wire with terminal 1 of the present invention includes an electric wire 2 and a terminal fitting 3 connected to the end of the electric wire 2.

  The said electric wire 2 comprises the wire harness routed by the motor vehicle etc. as a moving body. As shown in FIG. 2, the electric wire 2 includes a conductive fiber conductor 21 and an insulating covering portion 22. The fiber conductor 21 is formed by twisting a plurality of conductors 23. The conductor 23 includes a fiber 23A made of a resin such as para-aramid or polyarylate, and copper 23B as a conductive metal plated on the surface of the fiber 23A.

  In the present embodiment, copper 23B is used as the conductive metal. However, the present invention is not limited to this, and any metal that can be plated on the surface of the fiber 23 may be used. Moreover, although the chemical fiber which consists of resin is used as the fiber 23A, this invention is not limited to this, For example, a natural fiber may be sufficient.

  As shown in FIG. 1, the terminal fitting 3 is formed by press-working a conductive metal plate, and has a flat wire connecting portion 31 in which the fiber conductor 21 is woven, and a mating connector. And the terminal connection portion 32 to which the terminal fittings are connected are provided integrally in the longitudinal direction Y1. The electric wire connecting portion 31 is provided with a plurality of holes 31A1 to 31A5 arranged along the longitudinal direction Y1.

  In the present embodiment, for example, five holes 31A1 to 31A5 are provided at intervals along the longitudinal direction Y1. In addition, the wire connection portion 31 is provided with a plurality of communication holes 31B1 to 31B5 extending from each of the plurality of holes 31A1 to 31A5 to one end portion in the short direction Y2 of the terminal fitting 3.

  Next, a method for connecting the above-described electric wire 2 and the terminal fitting 3 will be described below. First, the covering portion 22 at the end of the electric wire 2 is peeled to expose the fiber conductor 21. Next, as shown in FIG. 1, a plurality of holes 31 </ b> A <b> 1 to 31 </ b> A <b> 5 arranged along the longitudinal direction Y <b> 1 provided in the terminal fitting 3 so that the fiber conductors 21 float and sink with respect to the terminal fitting 3. Then, the fiber conductor 21 is inserted and the fiber conductor 21 is knitted into the terminal fitting 3.

  Specifically, as shown in FIG. 1 (B), the fiber electric wire 21 is located above the electric wire connecting portion 31 on the rear end side in the longitudinal direction Y1 with respect to the hole 31A1 located on the most rear end side (right side in the drawing) in the longitudinal direction Y1. It arrange | positions and then arrange | positions below the electric wire connection part 31 between hole 31A1-hole 31A2 through the said hole 31A1. Moreover, the fiber electric wire 21 is arrange | positioned above the electric wire connection part 31 between hole 31A2-hole 31A3 through hole 31A2, and then passes through hole 31A3, and the electric wire connection part 31 between hole 31A3-hole 31A4. It is arrange | positioned below, and also arrange | positions above the electric wire connection part 31 between hole 31A4-hole 31A5 through hole 31A4.

At this time, the fiber conductor 21 is inserted into the holes 31A1 to 31A5 from the communication holes 31A1 to 31A5. Thereafter, when the front end of the fiber conductor 21 is pulled toward the rear end side in the longitudinal direction Y1 (the right side in the drawing), friction is generated between the fiber conductor 21 and the wire connection portion 31 of the terminal fitting 3, and the friction force causes the fiber to The conductor 21 and the terminal fitting 3 are mechanically and electrically connected.

  According to the above-described embodiment, the fiber conductor 21 is inserted into the plurality of holes 31A1 to 31A5 provided in the terminal fitting 3 so that the fiber conductor 21 rises and falls with respect to the terminal fitting 3 and intersects. Is knitted into the terminal fitting 3 to cause friction between the fiber conductor 21 and the terminal fitting 3, and the fiber conductor 21 and the terminal fitting 3 are mechanically and electrically connected by this frictional force. Accordingly, the fiber conductor 21 and the terminal fitting 3 can be reliably and inexpensively connected without soldering or the like. In addition, since the fiber conductor 21 is highly flexible, it is easy to tighten when knitted, and almost no force is generated after knitting, so that the fiber conductor 21 and the terminal fitting 3 are more reliably connected. It can be carried out.

  Further, according to the above-described embodiment, the terminal fitting 4 is provided with a plurality of communication holes 31B1 to 31B5 extending from each of the plurality of holes 31A1 to 31A5 to the end of the terminal fitting 3. As a result, the fiber conductor 21 can be inserted into the plurality of holes 31A to 31A5 through the communication holes 31B1 to 31B5 extending to the end of the terminal fitting 3, so that the fiber conductor 21 can be easily knitted. Can do.

  In addition, according to embodiment mentioned above, although the fiber conductor 21 was knitted in the electric wire connection part 31 toward the front end side of the longitudinal direction Y1, this invention is not limited to this. For example, as shown in FIG. 3, after the fiber conductor is inserted into the plurality of holes 31A1 to 31A5 toward the distal end side in the longitudinal direction Y1, the fiber conductor is folded back and the plurality of holes toward the rear end side in the longitudinal direction Y1. It is inserted in 31A-31A5. By folding and braiding in this way, the mechanical and electrical connection between the fiber conductor 21 and the terminal fitting 3 can be more firmly performed.

  Moreover, according to embodiment mentioned above, although connection part 31B1-31B5 was provided, this invention is not limited to this. It is not necessary to provide about connection part 31B1-31B5.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

1 electric wire with terminal 3 terminal fitting 21 fiber conductor 23A fiber 23B copper (conductive metal)
31A1-31A5 hole 31B1-31B5 communication hole

Claims (4)

In a connection method for connecting a fiber conductor formed by twisting a plurality of conductors plated with a conductive metal on the surface of a fiber, and a terminal fitting,
The fiber conductor is inserted into a plurality of holes arranged along the longitudinal direction provided in the terminal metal fitting so that the fiber conductor floats and crosses with respect to the terminal metal fitting, and the fiber conductor is The fiber conductor and the terminal fitting are mechanically and electrically connected only by a frictional force generated between the fiber conductor and the terminal fitting by braiding the terminal fitting and pulling the fiber conductor. Connection method. The connection method according to claim 1, wherein the terminal fitting is provided with a plurality of communication holes extending from each of the plurality of holes to an end portion in a short direction of the terminal fitting. Each of the plurality of communication holes extends from the front end side of the hole in the longitudinal direction to the opposite connector connection side to the end portion in the short direction of the terminal fitting,
The connection method according to claim 2, wherein there is no communication hole extending from a rear end side of the hole in the longitudinal direction to an end portion in a short direction of the terminal fitting. The fiber conductors are inserted into the plurality of holes sequentially toward the distal end side which is the mating connector connection side in the longitudinal direction, and then turned back and sequentially toward the rear end side in the longitudinal direction. It inserts in a hole. The connection method in any one of Claims 1-3 characterized by the above-mentioned.

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