JPH0673871U - Wiring terminal fittings for coated electric wires - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a wiring terminal metal fitting suitable for connecting a large number of electric wires to the rack of a communication device, in a state in which both the electric wire and the terminal are connected and fixed by the metal fittings. It is an object of the present invention to provide a wiring terminal fitting that can obtain the above. [Structure] When the sheath of the covered electric wire is shaved off and a core wire is connected to a predetermined terminal by wiring, an annular portion 11 that encloses the electric wire distal end by a predetermined length, and an annular portion 11 extending from the annular portion 11 in the direction of the electric wire tip, and a wrapping terminal. It is formed by forming an extension portion 12 which is hooked on and electrically connected. Alternatively, the extension 12 is formed so as to be inserted into the soldering terminal hole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wiring terminal fitting suitable for connecting a large number of electric wires to the rack of a communication device.

[0002]

[Prior art]

 In a telephone office, a large number of coaxial cables and other communication cables are connected to a device called a rack so as to be connected to a large number of connection terminals such as 24 pairs and 48 pairs. Then, the coating on the end of the cable was scraped off and soldered or caulked to connect it to the end of the rack.

Coaxial cables are normally connected to each other by a connecting device called a plug / jack. However, when the connecting terminals of the communication cable are aligned in the rack as in a telephone office, the terminals are connected to each other. It is necessary to connect directly to.

At this time, as shown in FIG. 7, when a large number of cables come close to the terminals provided close to each other, the coating only on the tip portion of the cables is scraped off. In FIG. 7, 1 is a coaxial cable, 2 is a core wire of the coaxial cable, 3 is a covering material for the core wire, and 4 is a coated braided wire of the coaxial cable (also referred to as a shield wire because it functions as a shield for the core wire). Reference numeral 5 denotes an outer coating of the braided wire, for example, fibers, 6 is not shown in detail, but is a wrapping terminal of a rack of a communication device, for example, and 7 is a shrink tube made of synthetic resin inserted in a coaxial cable.

When the coaxial cable 1 is connected to the wrapping terminal 5, the coating (often made of synthetic resin) on the tip of the coaxial cable 1 is scraped off with a tool called a nipper, and the tip of the core wire covering material 3 is scraped off to remove the core wire. Expose 2 The coated braided wire 4 is twisted into a twisted wire. There is a fiber-like coating 5 on the side of the coaxial cable 1 of the braided wire 4 so as to prevent an accidental short circuit with the wrapping terminal and the coaxial cable core wire together with the coating material 3. The shrink tube 7 is also inserted so that an unexpected accident does not occur.

FIG. 8 is a view showing a case where the rack terminals are soldering terminals. In FIG. 8, reference numeral 8 denotes a half-finished terminal, and other than that, the same reference numerals as those in FIG. 7 denote the same parts. The core wire 2, the braided wire 4 and the terminal 8 are soldered.

As the communication cable, not only a coaxial cable but also a core wire containing an iron-based material may be used.

[0008]

[Problems to be solved by the device]

 Since the coaxial cable 1 is connected to the terminal of the rack, the coating is scraped off by an instrument, so that the core wire 2 and the coated braided wire 4 often have scratches that cannot be detected by the naked eye. The damage can be dealt with immediately if the core wire 2 is broken during the connection test at the terminal of the rack, but immediately after the device is broken due to a small amount of scratches and the user discovers it. If it cannot be processed, the manufacturer bears the responsibility, resulting in a large loss for both the user and the manufacturer.

The disconnection accident is because the terminals 6 and 8 are supported only by the core wire 2, so that when the coaxial cable 1 is slightly vibrated, a large tension is applied to the core wire. When the shrinkable tube 7 is used, the outer diameter of the cable 1 becomes unnecessarily large and the cables often come into contact with each other, which causes a drawback that the tension applied to the cable core wire becomes large.

Further, when the iron wire material is used for the electric wire, if the core wire is directly soldered, brittleness particularly occurs, and the wire is easily broken. SUMMARY OF THE INVENTION An object of the present invention is to provide a wiring terminal metal fitting that solves the above-mentioned drawbacks and can obtain a state in which both an electric wire and a terminal are connected and fixed by a metal fitting.

[0011]

[Means for Solving the Problems]

 FIG. 1 is a perspective view showing the principle configuration of the present invention, 10 is a metal fitting as a whole, 11 is an annular portion that wraps around the tip portion, and 12 is an extension portion.

In order to achieve the above-mentioned object, the present invention has an annular portion (11) for wrapping a tip of an electric wire for a predetermined length when the sheath of the covered electric wire is shaved to connect a core wire to a predetermined terminal. The ring-shaped portion (11) is extended in the direction of the tip of the electric wire, and is formed by an extension portion (12) that is hooked on the lapping terminal and electrically connected.

FIG. 2 is a perspective view showing the structure of another device, wherein 10 and 11 show the same parts as in FIG. 1, and 13 is an extension of the other device. In another invention, it is the same as FIG. 1 except that the extension portion 13 can be inserted into the soldering terminal.

[0014]

[Action]

 In the metal fitting 10 shown in FIGS. 1 and 2, the annular portion 11 encloses the tip of the electric wire. Further, the extension 12 is hooked on the connection terminal or inserted into the terminal to fix the metal fitting to the connection terminal. Next, scrape off the wire coating and connect the exposed core wire to the required terminals by soldering, etc.

[0015]

【Example】

 FIG. 3 is a perspective view showing a state in which the coaxial cable is attached to the wrapping terminal by the metal fitting of the present invention. In FIG. 3, 1 is a coaxial cable, 2 is a core wire, 3 is a covering material for the core wire, 4 is a coated braided wire, 6 is a wrapping terminal, 10 is a metal fitting of the present invention, 11 is an annular portion, and 12 is an extension portion. The metal fitting 10 is preferably made of a copper material having a hardness higher than that of the conventional product.

A part of the end coating of the coaxial cable 1 is shaved off, the annular portion 11 is wrapped around the portion of the coating 3, and caulking or other processing is performed. Next, the opposite side of the extension 12 from the cable is hooked on the wrapping terminal 6 so that the metal fitting 10 and the coaxial cable are fixed to the wrapping terminal 6. Then, the core wire 2 is wound around the wrapping terminal 6 using a wrapping tool, or is simply wound and then soldered. The coated braided wire (coated shielded wire) 4 is connected to the adjacent installation terminal by an appropriate means.

FIG. 4 shows a case similar to that of FIG. 3 in which a metal fitting is attached to the coated braided wire (coated shielded wire) 4 of the coaxial cable. Therefore, the reference numerals are the same as those in FIG. Then, the annular portion 11 wraps the covered braided wire 4 and performs processing such as caulking. The extension 12 is hooked to the terminal of the lapping terminal 6 which is at the ground potential. The core wire 2 is wound around a predetermined terminal. The core wire 2 and the portion where the coated braided wire 4 is wrapped in the annular portion 11 are half-bonded as necessary.

FIG. 5 shows a state in which the coaxial cable 1 is attached to a soldering terminal, and the electrical connection between the metal fitting and the terminal corresponds to the case of FIG. The extension 12 is inserted into the hole 13 of the terminal and then bent, and then the core wire 2 is wound around the terminal or the metal fitting extension and soldered.

FIG. 6 likewise corresponds to the case of FIG. In the above, the case where the coaxial cable is used as the electric wire has been described, but the present invention can be similarly applied to a covered electric wire such as a stranded cable other than the coaxial cable.

Further, it can be applied to a pin terminal other than the lapping terminal as a wiring terminal, for example, a pin terminal that requires dense wiring.

[0021]

[Effect of device]

 In this way, according to the present invention, since the wired wire is fixed to the terminal, even when vibration is applied to the wire, tension is not applied to the core wire, so the covering is scraped off. Even if the core wire is damaged, it will not expand and break, which is effective in improving the quality of the manufacturer's products.

When the portion of the metal fitting that is at the ground potential is wrapped by the annular portion, it is possible to easily connect to the terminal by the extension portion without making a twisted wire after scraping off the coating as in the conventional method. Therefore, the working time can be shortened. Even when using a coaxial cable as in the past, it is not necessary to use a shrink tube near the terminal shown in the figure, so even if many coaxial cables are concentrated near the terminal, the cable part swells and becomes large. There is no such thing.

[Brief description of drawings]

FIG. 1 is a perspective view showing the principle configuration of the present invention.

FIG. 2 is a diagram showing the configuration of another device.

FIG. 3 is a perspective view showing a configuration of an embodiment of the present invention.

FIG. 4 is a perspective view showing the configuration of another embodiment of the present invention.

FIG. 5 is a perspective view showing the configuration of another embodiment of the invention.

FIG. 6 is a perspective view showing a configuration of another embodiment of another invention.

FIG. 7 is a diagram for explaining a conventional technique.

FIG. 8 is a diagram for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coaxial cable 2 Core wire 3 Core wire coating material 4 Coated braided wire 6 Lapping terminal 10 Metal fitting of the present invention 11 Annular portion 12 Extension portion

Claims (3)

[Scope of utility model registration request] 1. An annular portion (11) for enclosing a tip of an electric wire by a predetermined length when the core wire is shaved off to connect a core wire to a predetermined terminal, and an end of the electric wire from the annular portion (11). A ring-shaped terminal fitting, which is extended in a direction and is formed with an extension portion (12) hooked on a wrapping terminal and electrically connected. 2. An annular portion (11) which encloses the tip of the electric wire for a predetermined length when the sheath of the end of the covered electric wire is shaved off and the core wire is connected to a predetermined terminal, and an end of the electric wire from the annular portion (11). A ring-shaped terminal fitting, characterized in that it is formed with an extension (13) that extends in the direction and can be inserted into the soldering terminal hole. 3. An annular terminal fitting, wherein the covered electric wire according to claim 1 or 2 is a coaxial cable.