JPH0668338U - Pin jack structure - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Regarding the structure of pin jacks used as electrical connection terminals for electric products such as televisions, VTRs, and audio equipment, when a color-coded ring is used for the pin jacks, It is an object of the present invention to provide a pin jack structure in which the color-coded ring does not fall from the fixed housing of the jack plate during assembly. A jack plate, a fixed housing fixed to the jack plate, a positive electrode body fitted in a fitting hole of the fixed terminal, and a color-coded ring placed on an upper end surface of the fixed housing. , A pin jack comprising the color-coded ring and a ground electrode body which is fitted around the fixed housing and fixed to the jack plate, in the upper part of the fixed housing 12, 12a and the lower part of the color-coded ring 11, 11a. The concave portions 15, 15a, 16, 16a and the convex portions 13, 13a,
That is, the engaging portions composed of 14 and 14a are provided, and the engaging portions have different engaging arrangements for different colors.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a so-called pin jack structure, which is used as an electrical connection terminal of an electric product such as a television, a VTR, an audio device, etc., and into which a pin plug of a cable for transmitting an electric signal is inserted.

[0002]

[Prior art]

 The structure of a conventional pin jack shown in FIGS. 5A and 5B is known. That is, to explain with an exploded view of FIG. 5B, a jack plate 1 fixed to the end surface of a device such as an electric product by a screw, a fixed housing 1a fixed to the jack plate 1, and the fixed terminal 1a. The positive electrode body 2 fitted in the fitting hole, the color-coded rings 3 and 3a placed on the upper surface of the fixed housing 1a, and the color-coded rings 3 and 3a and the fixed housing 1a. And a ground electrode body 4 which is fixed to the jack plate 1.

In this pin jack, a color-coded ring formed by adding color to synthetic resin in order not to make a mistake in inserting IN and OUT of a pin plug of a cable for connecting to another device. The colors 3 and 3a are used for distinction.

[0004]

[Problems to be solved by the device]

 However, when the pin jack shown in FIG. 5 is assembled, the color-coded rings 3 and 3a have a mere cylindrical shape, and even if they are mounted on the upper surfaces of the fixed housings 1 and 1a, they are fixed in position. Therefore, the color-coded rings 3, 3a often fall from the fixed housing 1a when the ground electrode body 4 is put on the color-coded rings 3, 3a from above. In this way, there was a drawback that the assembly work of the pin jack was inefficient. As shown in FIG. 6, there is also a method of printing the color on the upper end surfaces of the fixed housings 5 and 5a which are integrally formed without using the color-coded rings, but the color is printed on the housing of the molded product. It has the drawback that it is difficult to identify because it cannot obtain a color with a certain degree.

The present invention has been made in view of the above problems, and when a color-coded ring is used for a pin jack, the color-coded ring is prevented from falling from a fixed housing of a jack plate during assembly. It is intended to provide the structure of.

[0006]

[Means for Solving the Problems]

 An object of the present invention to solve the above problems and achieve the above objects is to provide a jack plate fixed to an end surface of a device such as an electrical product, a fixed housing fixed to the jack plate, and a fitting of the fixed terminal. A positive electrode body fitted into the fitting hole, a color-coded ring placed on the upper end surface of the fixed housing, and a grounding that is fitted around the color-coded ring and the fixed housing and fixed to the jack plate. In the pin jack consisting of the electrode body, the engaging portion consisting of the concave portion and the convex portion is provided in the upper part of the fixed housing and the lower part of the color-coded ring, and the engagement parts are arranged to be different in color. Exist.

[0007]

[Action]

 The engaging portion of the color-coded ring and the fixed housing eliminates the inconvenience that the color-coded ring falls off from the fixed housing when the pin jacks are assembled with each other. Further, since the arrangement of the concave portion and the convex portion of the engaging portion is made different depending on the color, only the fixed housing having the same engaging arrangement and the color-coded ring can be fitted. Never.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a color-coded ring and a fixed housing of a pin jack according to the present invention, and FIG. 2 is a vertical cross-sectional view showing an assembled state of the color-coded ring and the fixed housing. In the figure, reference numeral 10 is a pin jack of the present invention, 11 and 11a are color-coded rings, 12 and 12a are fixed housings, 13 and 13a are convex portions, 14 and 14a are convex portions, 15 and 15a are concave portions, 16 and Reference numerals 16a indicate concave portions, respectively. For ease of understanding, the parts corresponding to those in the conventional example are designated by the same reference numerals.

The pin jack 10 according to the present invention includes recesses 15, 15 a, 16, 16 a and a protrusion 13 on the upper part of the fixed housing 12, 12 a to which the jack plate 1 is fixed and the lower part of the color-coded ring 11, 11 a. , 13a, 14 and 14a are provided, and the engaging portions are arranged differently for each color (for example, black and yellow).

In the arrangement of the engaging portion, as shown in FIGS. 1A and 1B, for example, the convex portion 13 is rotated below the convex portion 13 on the lower part of the yellow color-coded ring 11 and about 120 °. Protrusions 13a are provided in the arrangement. Further, the convex portion 14 and the convex portion 14a are provided at a lower portion of the black color-specific ring 11a and rotated by 180 ° with respect to the convex portion 14.

Further, the fixed housing 12 is also provided with concave portions 15 and 15a in the same arrangement so as to fit with the convex portions 13 and 13a of the color-coded ring 11. Similarly, the fixed housing 12a is also provided with concave portions 16 and 16a so as to be fitted into the convex portions 14 and 14a of the color-coded ring 11a.

With the pin jack 10 thus constructed, for example, as shown in FIG. 2A, when the color-coded ring 11 is fitted to the fixed housing 12, the color-fitted ring 11 is fitted properly, and 12a and the color-coded ring 11a are normally fitted together, and the pin jack 10 is assembled as shown in FIGS.

However, by mistake, as shown in FIG. 2B, an operator tries to fit the black color-coded ring 11a into the fixed housing 12 (for the yellow color-coded ring 11). However, since the concave portions 15 and 15a (120 ° arrangement) of the fixed housing 12 and the convex portions 14 and 14a (180 ° arrangement) of the color-coded ring 11a have different arrangements, they cannot be fitted together. Therefore, even if the color-coded ring 11a is placed on the upper end surface of the fixed housing 12 and the ground electrode body 4 is covered from above, the height is increased by the height of the convex portions 14 and 14a, and the terminal of the ground electrode body 4 is increased. The ground electrode body 4 cannot be fixed to the jack plate 1 because the terminal 4a cannot be bent because the lower surface 4a of the jack plate 1 does not penetrate therethrough. As described above, the wrong combination of the color-coded rings and the fixed housing cannot be fitted, and the ground electrode body 4 cannot be fixed to the jack plate 1, so that the pin jack 10 can be assembled correctly.

The pin jack 10 described above is an example, but the above-described recesses may be provided on the color-coded ring and the projections may be provided on the fixed housing, for example, in the reverse order of the above. In addition, the number of the engaging portions of the concave portions and the convex portions provided is arbitrary, and it is possible to easily cope with an increase in the number of color sections, and the arrangement (angle in the circumferential direction) is also appropriately changed. It is possible. Further, the shape of the concave portion and the convex portion is not limited to the rectangular cross section as shown in the figure, but may be U-shaped or triangular.

[0015]

[Effect of device]

 As described above, the structure of the pin jack according to the present invention includes a jack plate fixed to an end surface of a device such as an electric product, a fixed housing fixed to the jack plate, and a fitting hole of the fixed terminal. A positive electrode body to be fitted, a color-coded ring placed on the upper end surface of the fixed housing, and a ground electrode body which is fitted around the color-coded ring and the fixed housing and fixed to the jack plate. In the pin jack consisting of, since the engaging portion composed of the concave portion and the convex portion is provided in the upper portion of the fixed housing and the lower portion of the color-coded ring, and the engagement portions have different color-based engagement arrangements, When it is fitted into the fixed housing, it does not fall down during assembly, improving work efficiency, and because the arrangement of the engaging part differs for each color, there is no assembly error and accurate assembly is possible. Pi The improvement of the jack of reliability.

[Brief description of drawings]

FIG. 1 is a plan view (a), (b), (c) and (d) of a color-coded ring and a fixed housing of a pin jack according to the present invention.

FIG. 2 is vertical sectional views (a) and (b) showing a state of assembling the color-coded ring and the fixed housing.

FIG. 3 is a perspective view showing a pin jack of the present invention in which assembly is completed.

FIG. 4 is an exploded perspective view of a pin jack according to the present invention.

FIG. 5 is a perspective view (a) of a pin jack according to a conventional example,
It is an exploded perspective view (b).

FIG. 6 is a perspective view of a pin jack according to another conventional example.

[Explanation of symbols]

10 pin jack of the present invention, 11, 11a color-coded ring, 12, 12a fixed housing, 13, 13a convex portion, 14, 14a convex portion, 15, 15a concave portion, 16,
16a Recess.

Claims (1)

[Scope of utility model registration request] 1. A jack plate fixed to an end surface of a device such as an electric appliance, a fixed housing fixed to the jack plate, and a positive electrode body fitted in a fitting hole of the fixed terminal.
A pin jack comprising a color-coded ring placed on the upper end surface of the fixed housing and a ground electrode body fitted around the color-coded ring and the fixed housing and fixed to the jack plate, wherein the fixed housing And a lower portion of the ring for each color, an engaging portion composed of a concave portion and a convex portion is provided, and the engaging portion has an engaging arrangement different for each color.