JPH0650277U - Coaxial type 3 pole mini plug - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a compact coaxial three-pole mini-plug with high packaging density of components and high tensile strength of a cord. In a coaxial type three-pole mini plug, each pole is exposed stepwise at an upper end portion of the plug through an insulating layer, and a substrate on which a predetermined component is mounted is fitted into the stepwise exposed electrode, A predetermined cord is connected to the substrate, and is integrally molded with an appropriate insulator so that a part of the plug and a part of the cord wire are covered.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a coaxial type three-pole mini plug used for transmitting a signal to a terminal of an electronic device.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 3, a predetermined component 22 such as a resistor or a capacitor is directly attached between each terminal piece 20 of a coaxial type three-pole mini plug by soldering or the like, and a cap 21 made of an insulating material such as vinyl is attached. The cord 5 inserted in advance was connected to the terminal piece 20 with solder or the like, and then the cap 21 was returned and screwed into the plug.

[0003]

[Problems to be solved by the device]

 Therefore, the complicated work of connecting small parts in a narrow space is required, and the space is limited.Therefore, the number of parts that can be installed is limited, and the larger the number of parts, the larger the plug becomes. There was a problem to do. Also, since the parts are attached manually, the reliability is low, and the tensile strength at the cord connection tends to be insufficient, resulting in frequent disconnection accidents. This invention was made to solve such problems.

[0004]

[Means for solving problems]

 In a coaxial three-pole mini plug, each pole is exposed stepwise at the upper end of the plaque via an insulating layer, and a board on which predetermined components are mounted is fitted into the stepwise exposed electrode, and a predetermined cord is attached. Is connected to the substrate, and is integrally molded with an appropriate insulating material so that a part of the plug and a part of the cord wire are covered.

[0005]

[Action]

 Since the mounting of certain parts on the board is done mechanically in a specialized factory, many parts can be mounted on a small board, and this board can be fitted into the electrode exposed in the step at the top of the plug. Installation of the parts to each electrode of the plug is completed, and the installation work becomes very easy. After the specified coat is connected to the board, it is integrally molded with an appropriate insulator so that part of the plug and part of the cord are applied, so the tensile force of the cord is reinforced, and It is possible to prevent disconnection accidents due to insufficient power.

[0006]

【Example】

 Referring to FIGS. 1 and 2 showing an embodiment of the present invention, reference numeral 1 is a coaxial type three-pole mini-plug, and an insulating layer 2 made of rubber or plastic is provided at an upper end portion thereof so that the respective poles do not come into contact with each other. Through, each pole is exposed in a floor shape. Reference numeral 4 is a board on which a predetermined circuit is printed, and a predetermined component 3 is mounted on the circuit. The lower end of the board is fitted to each of the poles exposed in the floor of the plug 1 to electrically connect them. It has stepped notches to allow it. Reference numeral 7 denotes an electrode of the substrate, which is attached so as to be electrically in close contact with each of the above-mentioned stepwise exposed poles. A code 5 is connected to the substrate 4. 6 is a mold made of an insulating material such as rubber or plastic, which covers a part of the plug and a part of the cord wire. As shown in FIG. 1, the cord 5, the board 4, and the plug 1 are watertight. Is integrally molded. In the present invention, the shape of the mold 6 is not limited.

[0007]

【effect】

 Since the present invention is configured as described above, it has the following effects. (1) Since the plug and the component mounting board are integrated, the diameter can be reduced. (2) Since the cord is integrally molded, the tensile strength of the cord is improved and the disconnection accident can be reduced. (3) Chip-type components can be used by using a substrate, which enables high-density mounting of components and miniaturization of the entire plug. The present invention has the above effects, and its industrial utility value is remarkable.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a plan view of a substrate

FIG. 3 is a partially cutaway front view showing a conventional technique.

[Explanation of symbols]

 1 Plug 2 Insulating Layer 3 Parts 4 Board 5 Code 6 Mold 7 Board Electrode 20 Terminal Piece 21 Cap 22 Parts

Claims (1)

[Scope of utility model registration request] 1. A coaxial three-pole mini-plug, in which each pole is exposed stepwise at the upper end of the plug (1) through an insulating layer (2), and a predetermined electrode is provided on the stepwise exposed electrode. The board (4) on which the component (3) is mounted is fitted, the predetermined cord (5) is connected to the board (4), and part of the plug (1) and part of the cord wire (5) are caught. A coaxial three-pole mini plug characterized by being integrally molded (6) with an appropriate insulator