JPH0432769Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a mounting device for mounting a large number of indicators, such as light emitting diodes, on a printed circuit board.

[Conventional technology]

For example, in a control device such as a programmable controller, a large number of light emitting diodes are attached to a printed circuit board, and the status of a detection section is indicated by a pellet exposed from a case of the device.

An example of such a display mounting device is shown in Japanese Utility Model Publication No. 16179/1983. As shown in FIG. 6, this invention includes a plurality of pairs of holding pieces 4, 4a having claws 3, 3a at their upper ends, erected on the upper surface, and claws 5, 5a projecting outward at their lower ends. A holding plate 1 having engaging pieces 6, 6a provided on its lower surface.
The engaging pieces 6, 6a of this holding plate 1 are fitted into the holes 8, 8a provided in the printed circuit board 1 and fixed,
The light emitting diode 2 is inserted between each holding piece 4, 4a and locked between the claws 3, 3a, and its lead wires 9, 9a are inserted into holes provided in the holding piece 1 and the printed circuit board 7. , it is designed to be soldered to a pattern provided on a printed circuit board 7.

In addition, the one shown in FIGS. 4 and 5 has a through hole 14 at a position corresponding to the light emitting diode on the surface of the substrate 11 on which the pellet 12 of the light emitting diode is provided, and a translucent layer is formed on the surface side. A mounting plate 1 consisting of a member 13 to which a cover sheet 15 is attached.
0, a terminal block 18 in which a large number of lead wires 19 are embedded and molded, and a printed circuit board 20.As shown in FIG.
The lead wire 19 of the terminal block 18 is inserted into the hole 22 of the terminal block 18 and soldered to the pattern 21, and the mounting plate 1 is
A lead wire 19 bent at 90 degrees is inserted into the hole 17 of the board 11 and soldered to the pattern 16.

[Problem that the invention attempts to solve]

The device disclosed in Japanese Utility Model Publication No. 58-16179 shown in Fig. 6 not only has an extremely complicated structure, but also has a very large size when the number of detection points is, for example, 30 or more as has been the case recently. There is a problem in that it cannot cope with the miniaturization of equipment.

Furthermore, in the case shown in FIG. 4, not only is it troublesome to bend the many lead wires 19 linearly embedded in the terminal block 18 at right angles at the same height.
Connecting the lead wires 19 to the substrate 11 and the printed circuit board 20 is also troublesome. Furthermore, it is difficult to mount the board 11 accurately (at 90 degrees) to the printed circuit board 20, which causes various problems such as the member 13 having the pellet 15 not aligning with the window of the case, making adjustment troublesome. It was hot.

This invention was developed to solve the above problems, and has a compact and simple structure that is easy to install on a printed circuit board, and moreover, an indicator light that can be accurately mounted on a printed circuit board at a 90° angle. The purpose of this invention is to obtain a mounting device.

[Means for solving problems]

The present invention has been made to achieve the above-mentioned object, and includes a mounting plate having a plurality of through holes, and a protrusion provided on both sides of the mounting plate and a protrusion at the tip end on the base side of the lower part, which is approximately similar to the mounting plate. A locking piece extending at right angles;
a support plate comprising a fitting part having an engaging part having a fitting part on the end side; a display element is provided corresponding to the through hole of the mounting plate and connected to the display element at the lower part; The printed circuit board has a hole into which the protruding part of the locking piece provided on the support plate fits, and an elongated hole into which the engaging part fits. The present invention provides a display mounting device characterized by the following.

[Effect]

The board is attached to the mounting plate of the support plate, and the engaging portion is fitted into the elongated hole of the printed circuit board, and the end of the locking piece is brought into contact with the printed circuit board. When the support plate is pushed in in this state, the fitting part of the locking part will fit into the printed circuit board, the protruding part of the locking piece will fit into the hole of the printed circuit board, and the support plate will be fixed to the printed circuit board. . Next, connect the printed circuit board and the terminals of the board.

〔Example〕

FIG. 1 is an exploded perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view showing its assembled state. In both figures, reference numeral 31 denotes a U-shaped planar support frame made of a synthetic resin material, which consists of a square mounting plate 32 and approximately trapezoidal side plates 33, 33a formed on both sides of the mounting plate 32. At the lower part (the side plate 33 will be explained below), there is a locking piece 34 having an upward protrusion 35 at the opposite end of the base, and the side plate 3
An engaging portion 37 having a fitting portion 38 on the lower end side of No. 3
is formed. Note that the groove 36 formed by the locking piece 34 and the fitting part 38 of the engaging part 37 are connected to the mounting plate 3.
2 and has a size that matches the thickness of a printed circuit board 50, which will be described later. Also, support frame 3
1 has a large number of through holes 39 (36 are shown in the figure)
A translucent cover sheet 40 is attached to the front side of each through hole 39.

Reference numeral 41 denotes a board attached to the mounting plate 32 of the support frame 31. Light emitting diode pellets 42 are provided in the parts corresponding to the through holes 39 of the mounting frame 32, and terminal patterns 46,
47 are formed and connected by through-alls 48. Also, the pellet 42 of each light emitting diode
are connected to terminal patterns 46 and 47 provided on both sides of the substrate 41 through wiring patterns 44 and 45 (not shown).

50 is a printed circuit board, and the board 4 is on both sides of the end.
Terminal patterns 51 and 52 are provided corresponding to one terminal pattern 46 and 47, and both terminal patterns 51 and 52 are connected by a through hole 55. Further, circular holes 53, 53a are provided at positions corresponding to the protruding parts 35, 35a of the locking pieces 34, 34a of the support frame 31, and elongated holes 54, 54a are provided at positions corresponding to the engaging parts 37, 37a, respectively. It is provided. Note that the wiring pattern is omitted in the figure.

Next, the installation order of the present invention configured as described above will be explained. First, the substrate 41 is attached to the support frame 31 (fixed with screws, rivets, etc. as necessary). Next, as shown in FIG.
7, 37a, and the locking pieces 34, 34
The end of a is brought into contact with the end of the printed circuit board 50.
In this state, when the support frame 31 is pushed in the direction of the arrow as shown in the figure, the fitting parts 38 of the engaging parts 37, 37a,
38a fits into the printed circuit board 50, and the locking pieces 35, 35a are elastically deformed and moved forward, and the protrusion 3
5, 35a are holes 53, 53a of the printed circuit board 50
The support frame 31 is fixed to the printed circuit board 50 by fitting into the support frame 31 . Next, as shown in FIG. 2, lead wires 56 are inserted into the through holes 48 and 55 of the board 41 and the printed circuit board 50 and soldered to electrically connect them.

Although the above description shows the case where a light emitting diode is used as the display element, other elements may be used. Furthermore, the terminal patterns and wiring patterns provided on the substrate and printed circuit board are not limited to the above embodiments, and may be modified as appropriate.

[Effect of idea]

As is clear from the above description, according to the present invention, the structure is simple and compact, and a large number of display elements can be provided, and it can be mounted accurately and easily on a printed circuit board at a 90° angle. It is very effective in practical use, as there is no problem when loading it into the case.

[Brief explanation of the drawing]

Fig. 1a is an exploded perspective view of the embodiment of the present invention, b is a front perspective view of the mounting frame, Fig. 2 is a sectional view showing the mounting frame attached to a printed circuit board, Figs. 3a,
b is a partial cross-sectional view showing the assembly order of the present invention, FIG. 4a is an exploded perspective view of a conventional mounting device, b is a front perspective view of the mounting plate, and FIG. 5 is a partial cross-section showing the assembled state. 6 are perspective views of other conventional examples. 31... Support frame, 32... Mounting plate, 33, 33
a... Side plate, 34, 34a... Locking piece, 35, 3
5a... Protruding part, 37, 37a... Engaging part, 3
8, 38a... Fitting portion, 41... Board, 46, 4
7, 51, 52... terminal pattern, 50... printed circuit board, 53, 53a... hole, 54, 54a...
...Long hole.

Claims (1)

[Claims for Utility Model Registration] A mounting plate having a plurality of through holes, and a locking piece provided on both sides of the mounting plate and having a protrusion at the tip end on the base side of the lower part and extending approximately at right angles to the mounting plate. and a fitting part having an engaging part having a fitting part on the end side; a display element is provided corresponding to the through hole of the mounting plate, and a lower part is connected to the display element. and a board to be attached to the mounting plate, the printed board having a hole into which the protruding part of the locking piece provided on the support plate fits, and an elongated hole into which the engaging part fits. A display mounting device characterized in that: