Search

JP-2026076028-A - Electric wire with terminals, and method for manufacturing electric wire with terminals

JP2026076028AJP 2026076028 AJP2026076028 AJP 2026076028AJP-2026076028-A

Abstract

[Problem] To provide a wire with terminals that can accommodate multiple specifications while sharing terminals. [Solution] The wire with a terminal 1 comprises a terminal 20, a wire 10 connected to the terminal 20, and a cylindrical part 30 that covers the electrical contact between the terminal 20 and the wire 10. The terminal 20 has a rod-shaped contact portion 22. The wire 10 has a conductor core wire 11 that is electrically connected to the contact portion 22. The cylindrical part 30 is positioned so as to sandwich the conductor core wire 11 between the outer circumferential surface of the contact portion 22 and the inner surface of the cylindrical part 30, and is configured such that the cylindrical part 30 presses the conductor core wire 11 against the outer circumferential surface of the contact portion 22, thereby crimping the contact portion 22 and the conductor core wire 11 together. The terminal 20 has an engagement portion 25 with an uneven shape on the outer circumferential surface of the contact portion 22, and the conductor core wire 11 of the wire 10 is pressed by the cylindrical part 30 and engages with the engagement portion 25. [Selection Diagram] Figure 7

Inventors

  • 出野 正博

Assignees

  • 矢崎総業株式会社

Dates

Publication Date
20260511
Application Date
20241023

Claims (5)

  1. A wire with a terminal, comprising a terminal, a wire connected to the terminal, and a cylindrical component covering the electrical contact between the terminal and the wire, The terminal has a rod-shaped contact portion, The electric wire has a conductive core wire that is electrically connected to the contact portion. The aforementioned cylindrical part is The conductor core wire is positioned between the outer circumferential surface of the contact portion and the inner surface of the cylindrical component, and the cylindrical component presses the conductor core wire toward the outer circumferential surface of the contact portion, thereby crimping the contact portion and the conductor core wire together. Electrical wire with terminals.
  2. In the wire with terminals described in claim 1, The aforementioned terminal is The outer circumferential surface of the contact portion has an engaging portion having an uneven shape, The conductor core wire of the aforementioned electric wire is The cylindrical part is pressed against the engagement portion, Electrical wire with terminals.
  3. In the wire with terminals described in claim 1, The cylindrical part is made of a metal material. Electrical wire with terminals.
  4. In the wire with terminals described in claim 1, The contact portion of the terminal has a solid columnar shape. Electrical wire with terminals.
  5. A method for manufacturing a wire with a terminal, in which the terminal and the wire are electrically connected, The steps include: arranging the conductor core wire of the electric wire so as to cover the outer surface of the rod-shaped contact portion of the terminal; The steps include: preparing a cylindrical component having an inner diameter that allows the conductor core wire to be sandwiched between the outer surface of the contact portion and the inner surface of the cylinder; and arranging the cylindrical component so that the conductor core wire is sandwiched between the outer surface and the inner surface of the cylinder; The process includes a step of using a crimping tool that deforms the cylindrical part to reduce its diameter, to crimp the cylindrical part, the conductor core wire, and the contact portion together, thereby crimping the contact portion and the conductor core wire. A method for manufacturing wires with terminals.

Description

This invention relates to a wire with a terminal, in which the terminal and the wire are electrically connected, and to a method for manufacturing a wire with a terminal. Conventionally, it has been proposed to manufacture wires with terminals using terminals that have a connecting portion that connects to the mating terminal and a crimping portion that has a continuous cylindrical shape (a so-called closed barrel shape) in the circumferential direction and is crimped to the conductor core of the wire (see, for example, Patent Document 1). Japanese Patent Publication No. 2017-224396 Figure 1 is a perspective view showing a wire with terminals according to an embodiment of the present invention.Figure 2 is a side view illustrating the first process for manufacturing the terminal-equipped electric wire shown in Figure 1.Figure 3 is an enlarged view of section A in Figure 2.Figure 4 is a side view illustrating the second process for manufacturing the terminal-equipped electric wire shown in Figure 1.Figure 5 is a side view illustrating the third step in manufacturing the terminal-equipped wire shown in Figure 1.Figure 6 is a side view illustrating the fourth step in manufacturing the terminal-equipped wire shown in Figure 1.Figure 7 is a cross-sectional view taken along line B-B in Figure 6.Figure 8 is an enlarged view of section C in Figure 7. <Implementation> The following describes, with reference to the drawings, an electric wire with a terminal 1 according to an embodiment of the present invention shown in Figure 1, and its manufacturing method. As shown in Figures 1 and 2, the electric wire with a terminal 1 is composed of an electric wire 10, a male terminal 20, and a cylindrical component 30. The electric wire with a terminal 1 is manufactured by crimping the cylindrical component 30, which is positioned so as to sandwich the conductor core wire 11 of the electric wire 10 between the outer surface of the contact portion 22 of the terminal 20 and the inner surface of the cylindrical component 30, using a pair of molds 40 shown in Figure 6, thereby crimping the contact portion 22 to the conductor core wire 11. In this example, a male terminal 20 is used, but a female terminal 20 may also be used. For the sake of clarity, the following definitions will be used, as shown in Figure 1, etc., to define the "front-to-back direction," "up-down direction," and "left-to-right direction." These directions are orthogonal to each other. The front-to-back direction coincides with the axial direction of terminal 20. Furthermore, the radial and circumferential directions of terminal 20 (contact portion 22) will simply be referred to as the "radial direction" and "circumferential direction." Below, we will first describe each component constituting the terminal-equipped wire 1 in order. First, let's describe the electric wire 10. As shown in Figure 2, the electric wire 10 consists of a metal rod-shaped (long, slender cylindrical) conductor core wire 11 and a cylindrical resin insulating sheath 12 that covers the outer circumference of the conductor core wire 11. The conductor core wire 11 may be composed of multiple thin conductor wires bundled together, or it may consist of only one long, slender cylindrical conductor. At the tip (front end) of the electric wire 10, the insulating sheath 12 is removed by so-called terminal processing, exposing a predetermined length of conductor core wire 11. Next, the terminal 20 will be described. The metal terminal 20 is formed by processes such as casting and machining. The hardness of the metal material constituting the terminal 20 is higher than the hardness of the metal material constituting the conductor core wire 11 of the electric wire 10. As shown in Figure 2, the terminal 20 is a male-type terminal and comprises a connecting portion 21 located at the tip (front end) and a contact portion 22 located at the base (rear end). The connector portion 21 is the part that is inserted into the base end of the female-type mating terminal (not shown) and connected to the mating terminal. As shown in Figure 2, it has a solid cylindrical shape extending in the front-to-back direction. To facilitate insertion of the connector portion 21 into the mating terminal, the tip (front end) of the connector portion 21 has a shape that tapers towards the tip (a so-called tapered shape). The contact portion 22 is the part where the exposed conductor core wire 11 of the electric wire 10 is positioned to cover the outer surface of the contact portion 22 and then crimped to the conductor core wire 11. Before crimping, as shown in Figure 2, it has a solid cylindrical shape extending in the front-rear direction. The outer diameter of the contact portion 22 is smaller than the outer diameter of the connection portion 21. To facilitate the positioning of the exposed conductor core wire 11 of the electric wire 10 to cover the outer surface of the contact portion 22, the base end (rear end) of the contact po