JPH0327341Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] This is a retaining metal fitting for connecting a coaxial cord to a printed board, and a horizontal terminal is attached to this holding metal fitting to enable connection to the ground patterns on both sides of the printed board.

[Industrial application field]

The present invention relates to a retaining fitting for connecting a coaxial cord to a printed board, and particularly relates to the structure of a coaxial cord retaining fitting provided with a horizontal terminal connected to a ground pattern on the top surface (component mounting surface) of the printed board.

In recent years, in order to match impedances in signal transmission in electronic devices, a structure in which a coaxial cord is directly connected to a printed board has been adopted. In this case, it is necessary to connect the outer conductor of the coaxial cord to ground, but due to the mounting structure of current printed boards, the ground is supplied from the top surface (component mounting surface) of the printed board. However, with conventional coaxial cord retaining fittings, the terminal connected to the ground is connected to the bottom surface (pattern surface) of the printed circuit board, so the strap wire connects the ground pattern on the component mounting surface and the ground pattern surface. Because you are doing the unnecessary work of connecting it with the pattern,
It is desired that there be a coaxial cord retainer that can be directly connected to the ground pattern on the component mounting surface.

[Conventional technology]

Fig. 2 is a diagram illustrating a conventional coaxial cord retaining fitting, in which a is a perspective view, b is a perspective view of the coaxial cord mounted, c is a front view of the mounted coaxial cord, and d is a perspective view of the connection using a strap wire. It is a diagram.

In the figure, a metal with good conductivity, such as copper, is bent into an M shape, and vertical terminals 21 are placed on both sides of the bent metal.
The vertical terminal 21 of the retaining metal fitting 2 formed with the above is inserted into the through hole 11 provided in the printed board 1, bent, and bonded with solder or the like. Then, a predetermined amount of the outer sheath of the coaxial cord 3 connected to the retainer 2 is removed, and the exposed external conductor 31 is connected to the recess of the retainer 2 by soldering or the like. However, since the ground pattern that supplies this external conductor is provided on the component mounting surface, this ground pattern and the pattern connecting the vertical terminals are connected to each other by the strap wire 4 through the sheet 5, as shown in FIG. 2c. It is a structure that connects.

[Problem that the invention attempts to solve]

Regarding the conventional coaxial cord retaining fittings mentioned above,
Since the ground patterns on both sides of the printed board are connected by strap wires, there is a problem in that it requires a large amount of man-hours and also hinders high-density mounting of the printed board.

[Means for solving problems]

The present invention provides a coaxial cord retainer that solves the above problems, reduces the number of work steps, and enables high-density mounting.

In other words, in the coaxial cord retainer that connects the coaxial cord to the ground pattern on the top and bottom surfaces of the printed board, one opposing piece of the retainer is bent upward into a U-shape, and the other opposing piece is bent downward into an inverted U-shape. At the tip of this inverted U-shape, cut out the center of the tip and provide a vertical terminal that connects to the ground pattern on the bottom surface of the printed board, and connect both sides of this vertical terminal to the ground pattern on the top surface of the printed board. This problem is solved by bending the horizontal terminal.

[Effect]

The coaxial cord retainer has a horizontal terminal that can be connected to the ground pattern on the component mounting surface of the printed board, so that it can be easily connected to the ground pattern.

〔Example〕

FIG. 1 is a diagram illustrating an embodiment of the present invention.
In the figure, a is a perspective view, b is a perspective view of the coaxial cord mounted thereon, and c is a front view of the mounted coaxial cord. Portions equivalent to those in FIG. 2 are designated by the same reference numerals.

In the figure, one opposing piece of a retaining metal fitting 6 made of a metal with good conductivity, such as copper, is bent upward into a U-shape, and the other opposing piece is bent downward into an inverted U-shape. A vertical terminal 61 is cut out from the center of the tip and connected to the ground pattern on the bottom surface of the printed board 1, and horizontal terminals 62 are provided on both sides of the vertical terminal 61 to connect to the ground pattern on the top surface of the printed board 1. The vertical terminal 61 of the bent metal fitting 6 is attached to the printed board 1.
The horizontal terminal 62 is inserted into the through hole 11 provided in the board 1 and bonded by bending and soldering, and further the horizontal terminal 62 is bonded to the ground pattern on the component mounting surface of the printed board 1 by soldering or the like. Then, a predetermined amount of the outer sheath of the coaxial cord 3 connected to the retainer 2 is removed, and the exposed external conductor 31 is connected to the recessed portion of the retainer 2 by soldering or the like.

[Effect of idea]

As is clear from the above description, according to the present invention, the grounding that is supplied to the coaxial cord can be carried out directly using the retaining metal fitting, which improves the connection work efficiency and is extremely effective for high-density mounting of printed circuit boards. In addition, by attaching a horizontal terminal, it is possible to connect on the front and back sides of the printed board, and mechanical connection strength can be ensured. In this case, there is a risk of wire breakage due to thermal expansion when the external conductor is finally soldered to the retainer body, but since the horizontal terminal is connected, such wire breakage can be prevented. has.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating an embodiment of the present invention.
Figure a is a perspective view, b is a perspective view of the coaxial cord mounted, c is a front view of the installed coaxial cord, and Figure 2 is a diagram illustrating a conventional coaxial cord retainer; figure a is a perspective view, and b is a perspective view of the coaxial cord mounted, c is a front view of the mounted coaxial cord, and d is a perspective view of connection by strap wire. In the figure, 1 is a printed board, 2 and 6 are fasteners, 3 is a coaxial cord, 4 is a strap wire, 5 is a sheet, 11 is a through hole, 21 and 61 are vertical terminals, 31 is an external conductor, and 32 is an internal The conductors and 62 indicate horizontal terminals, respectively.

Claims (1)

[Scope of Claim for Utility Model Registration] In a coaxial cord retainer that connects the coaxial cord 3 to the ground pattern on the upper and lower surfaces of the printed board 1, one opposing piece of the retainer 6 is bent upward into a U-shape, and the other A vertical terminal 61 is provided at the tip of the inverted U shape by cutting out the center portion of the tip and connecting it to the lower ground pattern of the printed circuit board 1. A coaxial cord retaining fitting characterized in that horizontal terminals 62 are bent and formed to connect both sides of the board to the upper surface ground pattern of the printed board 1.