JPH09266034A - Connection structure of coaxial cable - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To reduce the number of parts, to simplify the structure, to reduce the number of wiring steps, and to simplify the structure. (EN) Provided is a coaxial cable connection structure compatible with pitching. A coaxial cable (10) having a central conductor (11) and a shield wire (13) extending in a cylindrical shape on the outer periphery of the coaxial conductor (10) is formed by connecting the central conductor (11) to a terminal (21) serving as a first connection target, and a shielded wire. 13 is a connection structure of a coaxial cable in which 13 is connected to a terminal 22 as a second connection target. The shielded wire 13 is formed by bundling a plurality of the wires and further applying a liquid rubber coating 30 as a fixing means to connect them to the terminals 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable connection structure in which a coaxial cable is connected to a connection target such as a connection side of a contact that constitutes a connector.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view showing an example of a conventional coaxial cable connection structure. In FIG. 5, the coaxial cable 10 includes a center conductor 11, a dielectric 12, a shield wire 13, and a sheath 14. The coaxial connector 20 'to which the coaxial cable 10 is connected includes an inner conductor 21', an insulator 23 ', a body 26, and a ferrule 22'.

This wire connection structure is constructed as follows. The center conductor 11 and the shield wire 13 of the coaxial cable 10
Is exposed, and the inner conductor 21 'is soldered to the central area 11. One end of the body 26 is inserted between the dielectric 12 and the shield wire 13. The ferrule 22 'is put on this and fixed by soldering. Through this step, the center conductor 11 is electrically connected to the inner conductor 21 ', and the shield wire 13 is electrically connected to the body 26.

The wiring structure assembled as described above is used by being fitted to the pin contacts attached to the electronic circuit board as it is, or is singly or plurally planted in an insulator (not shown). Then, it is used after constructing such a type of connector.

[0005]

The conventional coaxial cable connection structure, including the example shown in FIG. 5, has a large number of parts and is complicated in structure. For this reason, the number of connecting steps is large and complicated. In addition, the outer diameter of the coaxial connector is larger than the outer diameter of the coaxial cable itself, and therefore, when it is used by implanting it in the insulator as described above, it cannot cope with a narrow pitch.

An object of the present invention is to provide a coaxial cable connection structure having a small number of parts, a simple structure, and a small number of connection steps.

[0007] Another object of the present invention is to provide a coaxial cable connection structure that accommodates a narrower pitch of the connector when it is implanted in an insulator to form a connector.

[0008]

According to the present invention, a coaxial cable having a central conductor and a shield wire extending in a cylindrical shape at the outer periphery of the coaxial cable is formed by connecting the central conductor to a first connection target. In a connection structure of a coaxial cable in which a shield wire is connected to a second connection target, the shield wire is formed by bundling a plurality of the element wires and further applying a fixing means to the shield wire. A connection structure of a coaxial cable is obtained which is connected to a second connection target.

According to the present invention, a plurality of the first and second connection objects are respectively arranged in a row,
The connection structure of the coaxial cable is obtained in which the first and second connection objects in each row are displaced from each other in the direction in which the rows extend.

Further, according to the present invention, each of the first and second connection objects includes a pair of blade plate portions facing each other at a predetermined interval, and the center conductor and the grouped blade plate portions are arranged between the pair of blade plate portions. A connection structure for the coaxial cable is obtained, in which the plurality of wires in the separated state are press-fitted to form a connection.

According to the present invention, the connection structure of the coaxial cable can be obtained in which the first and second connection targets are connection sides of contacts forming a connector.

According to the present invention, the fixing means includes liquid rubber paint, thermosetting resin, ultraviolet curable resin, solder,
A connection structure for the coaxial cable is obtained, which is one of an adhesive and a shrink tube.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A coaxial cable connection structure according to an embodiment of the present invention will be described below with reference to the drawings.

1 (a) to 1 (d) are schematic assembly process diagrams for explaining a coaxial cable connection structure according to an embodiment of the present invention. FIG. 2 is a sectional view taken along the section line A1-A1 in FIG. FIG. 4 is a sectional view of the coaxial cable. In the drawings used in the embodiments of the present invention, the same or similar parts as those of the conventional example are
The same reference numerals as in FIG. 5 are attached.

With reference to FIGS. 1 (d), 2 and 4, the present connection structure includes a coaxial cable 10 having a center conductor 11 and a shield wire 13 extending in a cylindrical shape on the outer periphery thereof.
The center conductor 11 is connected to a terminal 21 as a first connection target, and the shield wire 13 is connected to a terminal 22 as a second connection target. The terminals 21 and 22 are planted in the insulator 23, and are the connection side of the contact (the whole is not shown) which comprises a connector not shown.

The shielded wire 13 is connected to the terminal 22 in a state where the shielded wires 13 are bundled together and further applied with a liquid rubber coating 30 as a fixing means.

Each of the terminals 21 and 22 is provided with a pair of blade plate portions facing each other at a predetermined interval, and a plurality of strands of the central conductor 11 and the shielded wire 13 in a grouped state are arranged between the blade plate portions of the pair. It is connected by press fitting.

As a means for fixing the plurality of strands of the shielded wire 13, in addition to the liquid rubber coating 30, a thermosetting resin, an ultraviolet curable resin, a solder, an adhesive, a shrink tube or the like may be applied. Good.

Next, a process of assembling the present wire connection structure will be described. First, as shown in FIG. 1A, the sheath 14 is peeled off by a predetermined length to expose the shielded wire 13. continue,
As shown in FIG. 1 (b), the shielded wire 13 is removed from the dielectric 12 and the plurality of strands forming the shielded wire 13 are twisted. Next, as shown in FIG. 1C, the twisted strands of the shielded wire 13 are coated with the liquid rubber coating material 30 and then dried, whereby the shielded wires 13 are put together. Next, as shown in FIG. 1D, the center conductor 11 is press-fitted between the pair of blade plates of the terminal 21 to form a wire connection and the terminal 2
Wiring is performed by press-fitting a plurality of strands of the shielded wire 13 in a grouped state between two pairs of blade plate portions. As described above, the coaxial cable connection structure according to the embodiment of the present invention is completed. This structure has a small number of parts and the assembly process is simple. This is more apparent when compared with the conventional connection structure shown in FIG.

Next, an application example of the connection structure of the coaxial cable according to the embodiment of the present invention will be described. This application example is an example in which the wiring structure of the present invention is applied to a connector having a plurality of contacts. That is, referring to FIG. 3, the insulator 23 has a plurality of contacts (only the terminal side is shown).
In accordance with this, a plurality of terminals 21 and 22 as the first and second connection objects shown in FIGS. 1 and 2 are respectively arranged in rows in the insulator 23. . The terminals 21 and 22 are offset from each other in the direction in which the rows extend. The pitch of each contact is narrower than that of a conventional connector of a type including a plurality of connectors due to the even arrangement and the short distance between adjacent terminals.

[0021]

The coaxial cable connection structure according to the present invention comprises a coaxial cable having a central conductor and a shield wire extending in a cylindrical shape on the outer periphery of the coaxial cable, the central conductor being connected to the first connection target. In a connection structure of a coaxial cable in which a shield wire is connected to a second connection target, the shield wire is bundled by arranging a plurality of the element wires and further fixing means to form a second wire. The number of parts is small, the structure is simple, and the number of wiring steps is small and simple.

Further, when a connector is formed by implanting it in an insulator, it is possible to cope with a narrower pitch of the connector.

[Brief description of drawings]

1A to 1D are assembly process diagrams for explaining a coaxial cable connection structure according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the section line A1-A1 in FIG.

FIG. 3 is a diagram showing an application example of a connection structure of a coaxial cable according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a coaxial cable applied to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a conventional coaxial cable connection structure.

[Explanation of symbols]

 10 coaxial cable 11 center conductor 12 dielectric 13 shielded wire 14 sheath 21, 22 terminal 21 'inner conductor 22' ferrule 23, 23 'insulator 26 body 30 liquid rubber paint

Claims (5)

[Claims] 1. A coaxial cable comprising a central conductor and a shield wire extending in a cylindrical shape on the outer periphery of the coaxial conductor, the central conductor being connected to a first connection target, and the shield wire being a second shield wire.
In the connection structure of the coaxial cable formed by connecting to the connection target, the shielded wire is bundled with a plurality of the element wires, and is further fixed to the second connection target. A coaxial cable connection structure characterized by being connected. 2. A plurality of the first and second connection objects are arranged in rows, and the first and second connection objects in each row are displaced from each other in a row extending direction. The connection structure for a coaxial cable according to claim 1, wherein the connection structure is for a coaxial cable. 3. The first and second connection objects each include a pair of blade plate portions facing each other at a predetermined interval, and the central conductor and the grouped state are arranged between the pair of blade plate portions. The connection structure for a coaxial cable according to claim 1, wherein the connection is made by press-fitting a plurality of wires. 4. The first and second connection objects are:
The connection structure of a coaxial cable according to any one of claims 1 to 3, wherein the connection structure is on a connection side of a contact that constitutes a connector. 5. The fixing means is any one of a liquid rubber paint, a thermosetting resin, an ultraviolet curable resin, a solder, an adhesive, and a shrink tube. The coaxial cable connection structure according to any one.