JPH043405Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a device for connecting a banana plug of a wrist strap to a communication device housing in order to ground the human body in order to prevent damage to electronic components due to electrostatic discharge. Concerning terminal structure.

[Prior Art] Conventionally, this type of terminal structure has a cylindrical terminal 21 having a hole 20 in the front part through which a wrist strap banana plug can be freely attached and detached, and a tapped part in the rear part, as shown in FIG. is bolted to an L-shaped metal fitting 23 screwed to the inside of the housing 22, and the terminal 21 is connected by wire to a terminal electrically resistance welded to the inside of the side plate 24, etc. of the housing 22. It was structured to do so.

[Problems to be Solved] In the conventional terminal structure described above, since the large terminal 21 is attached to the metal fitting 23, the structure itself becomes large and has the drawback of hindering the mounting of the electronic device component 25 most necessary for the communication device. It was hot. In addition, there was a drawback that the number of parts and assembly man-hours were large, leading to increased costs. Furthermore, depending on the installation method,
The terminal 21 protrudes from the casing 22 in the front direction and obstructs operation, especially when the tip of the terminal 21 is not insulated. There is a drawback that when a human body touches the tip of the terminal 21, static electricity is discharged at that point and the electronic component 25 is damaged.

[Means for solving the problem] The present invention was made to solve the above-mentioned conventional problems, and as a means of solving the problem, a wrist strap banana plug is connected to the communication device housing to ground the human body. In the terminal structure, the front shelf of the communication device housing is formed into an L-shaped cross section, the front side is provided with a hole for inserting the banana plug, and the upper surface of the back side is provided with a hole for inserting the banana plug inserted into the hole. Cross section U where the tip part contacts and fits
The present invention provides a terminal structure characterized in that a letter-shaped terminal is attached and the front shelf is covered with an insulating cover having holes corresponding to the holes in the front shelf.

[Example] Next, an example of the present invention will be described with reference to the drawings.

Fig. 1 is a cross-sectional view showing a terminal structure according to an embodiment of the present invention, Fig. 2 is an exploded perspective view showing the terminal structure shown in Fig. 1, and Fig. 3 is a communication device equipped with the terminal structure shown in Fig. 1. FIG. 3 is a perspective view of the casing.

The terminal structure consists of a front shelf 1, a terminal 2 attached to the inside of the front shelf 1, and a cover 3 covering the front shelf 1.

The front shelf 1 forms part of a mechanical component that forms the framework of a communication device housing 4 that houses an electronic device component 13, and is incorporated into the upper front portion of the side plates 5, 5 of the housing 4. Front shelf 1
has a substantially L-shaped cross section, and a U-shaped hole 8 into which the tip of a banana plug 7 is inserted is provided on its front surface 6.

The terminal 2 includes a banana plug insertion part 9 having a U-shaped cross section and mounting parts 10 formed horizontally on both sides of the upper end of the insertion part 9. The size of the U-shaped cross section of the insertion part 9 corresponds to the U-shaped hole 8 of the front shelf 1, and the length of the insertion part 9 is set to be slightly shorter than the tip of the banana plug 7. As shown in FIGS. 1 and 2, this terminal 2 is attached to the upper surface of the back side of the front shelf 1 by fixing a mounting portion 10 by electric resistance welding. As shown in FIG. 1, this attachment is carried out by aligning one end of the insertion portion 9 of the terminal 2 with the hole 8 in the front surface 6 of the front shelf 1, and aligning its central axis 11 with the central axis of the hole 8.

The cover 3 is formed by bending an insulating plate into an L-shape in accordance with the outer shape of the front shelf 1, and covers the outer surface of the front shelf 1 to insulate the front shelf 1. There is. The cover 3 also has a burring hole 12 formed smaller than the hole 8 at a location corresponding to the hole 8 of the front shield 1.
is provided. The burring hole 12 is provided so that its center coincides with the center axis 11 of the hole 8 and the insertion portion 9 of the terminal 2.

To adopt the above configuration, the tip of the banana plug 7 is inserted into the hole 8 of the flat front shelf 1 without any protrusions through the burring hole 12 of the cover 3, and then press-fitted into the insertion part 9 of the terminal 2. By doing so, the banana plug 7 and the housing 4 are connected. Since the front shelf 1 is insulated by the cover 3 during this connection, the human body does not come into contact with the front shelf 1.

[Effects of the invention] As explained above, in the terminal structure of the invention, the front shelf of the communication device housing is formed into an L-shaped cross section, and the front side is provided with a hole for inserting a banana plug, and the upper surface of the back side is provided with a hole for inserting a banana plug. Attach a terminal having a U-shaped cross section to which the tip of the banana plug inserted into the hole comes into contact, and cover the front shelf with an insulating cover having a hole corresponding to the hole in the front shelf. Therefore, the volume occupied by the terminal structure is extremely small, which has the effect of making it possible to mount electronic device components by effectively utilizing the casing. In addition, the number of parts and assembly man-hours are reduced, which has the effect of reducing costs. Furthermore,
Since it does not protrude from the housing and the cover is insulated, there is no damage to electronic components due to electrostatic discharge.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a terminal structure according to an embodiment of the present invention, Fig. 2 is an exploded perspective view showing the terminal structure shown in Fig. 1, and Fig. 3 is a communication device equipped with the terminal structure shown in Fig. 1. FIG. 3 is a perspective view of the casing.
Further, FIG. 4 is a perspective view of a communication device housing having a conventional terminal structure. 1...Front shelf, 2...Terminal,
3...Cover, 4...Communication device housing, 7...Banana plug, 8...Front shield hole, 12...
...burring hole.

Claims (1)

[Claim for Utility Model Registration] In a terminal structure in which a banana plug of a wrist strap is connected to a communication device case to ground the human body, the front shelf of the communication device case has a cross section L.
A hole for inserting the banana plug is provided on the front surface of the banana plug, and a terminal having a U-shaped cross section is attached to the upper surface of the back side of the banana plug into which the tip of the banana plug inserted into the hole comes into contact, and A terminal structure characterized in that the front shelf is covered with an insulating cover having holes corresponding to the holes of the front shelf.