JP2574093B2 - Housing structure of telephone subscriber unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel housing structure of a telephone subscriber unit which is one of communication devices.

[0002]

2. Description of the Related Art In recent years, communication services using telephone lines have expanded, and the demand for a subscriber home unit (DSU) installed in a general telephone subscriber home has increased. For this reason, there is a demand for mass productivity and cost reduction of a housing for housing the device.
As shown in FIG. 5, the structure of a conventional device of this type is a rectangular print in which an electronic component 43 is mounted in an inner space of a box-shaped housing 41 having a rectangular planar shape and an open top. A package composed of the substrate 42 is accommodated, and the package is closed with a cover plate 50 from above. Printed circuit board 4
2 is a pin 4 projecting from a pedestal 47 provided at a corresponding position on the bottom wall of the housing with a hole 49 provided at an appropriate position thereof.
8 and positioned. And printed circuit board 4
The tips of the plurality of display light-emitting diodes 45 mounted on one edge (the left end in FIG. 5) of the second device 2 are inserted into windows 51 formed on the side wall of the housing and attached so as to be visible from the outside. The mounted lid plate 50 is fixed by resiliently fitting a notch 52 provided at an appropriate position on a side edge thereof to the projection 51 on the housing side, and the printed circuit board 42 is lowered from the inner wall of the lid plate 50. The protruding pressing piece 53 is pressed so as not to move upward. Reference numeral 44 denotes a connector mounted on a printed circuit board.

[0003]

In this conventional structure, there is no guide for housing the package inside the housing, and the light emitting diode mounted in the end of the lead wire in the horizontal direction is mounted on the side wall of the housing. It was necessary to position the printed circuit board with respect to the pins of the receiving seat from above while aligning the window with the window, which made assembly work difficult.

The present invention solves such problems in the prior art, and by providing guide means for facilitating the insertion of a package in a housing, assembling work can be easily performed and appearance can be improved. An object is to provide an excellent housing structure.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a box-shaped housing having a rectangular bottom wall and a wall surrounded by a side wall and having an open top surface. A printed circuit board having a rectangular printed circuit board mounted with light-emitting diodes therein is housed therein, and the opening is covered with a lid to hermetically seal, and one of the side walls is provided with the light-emitting diode. A window into which a tip is inserted is provided, a bottom wall portion near the side wall forms an inclined surface rising toward the side wall, and has a stopper for locking an edge of the printed circuit board, and a package This is achieved by a housing structure in which a light emitting diode is inserted into a window while guiding the edge of the printed circuit board along the inclined surface during storage.

[0006]

In order to accommodate the package, the printed circuit board is maintained substantially horizontal by hand, and the edge on which the light emitting diode is mounted is advanced while sliding along the inclined surface of the bottom wall of the housing, and stopped by the stopper. Move up to At that position, the dimensional relationship is set such that the tip of the light emitting diode just coincides with the window on the side wall of the housing, and the pin of the receiving seat provided at an appropriate position on the bottom wall coincides with the hole of the printed circuit board. The package is easily positioned in place.

Hereinafter, based on a preferred embodiment shown in the drawings,
The present invention will be described in more detail.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A housing 1 according to the present invention has an electronic component 3 mounted on the surface of a rectangular printed circuit board 2 as in the conventional structure, a connector 4 mounted along one edge, and the other edge opposed thereto. For accommodating a package formed by fixing a plurality of light emitting diodes 5 so that their tips are directed in the horizontal direction along the bottom wall, as shown in FIG. 6 around side walls 7, 8, 9, 10
And is box-shaped with an open top.

The side wall 7 has a window 11 into which the tip of the light emitting diode 5 is inserted when the package is accommodated. Guides 12 are provided on the side walls 8 and 9 to guide the edge of the printed circuit board 1 to a predetermined position when housing the package. An opening 13 is formed in the side wall 10 for connecting the connector 4 to an external cable.

The region of the bottom wall 5 close to the side wall 7 is
A pair of left and right stoppers 15 for connecting the inclined surface 14 and the side wall 7 are formed.
It protrudes inward. The base of the stopper 15 rising from the inclined surface 14 is cut out to form a recess 16.
Is formed. A pair of left and right pedestals 17 is provided in a horizontal region of the bottom wall adjacent to the inclined surface 14, and a pin 18 projects from the pedestal 17.

In order to accommodate the package in the housing 1, the rear part of the printed circuit board 2 is grasped with a finger, and the printed circuit board 2 is inserted into the housing with the side edge along the guide 12. Then print
The substrate 2 is positioned along the center line of the housing 1 by the guide 12. Next, as shown by a dotted line in FIG. 2, the edge of the printed circuit board 2 to which the light emitting diode 5 is fixed is brought into contact with the inclined surface 14 of the bottom wall 6 and is advanced.
With the concave portion 16 of FIG. Then, the light emitting diode 5 is brought into a posture corresponding to the window 11 of the side wall 7 and its tip is inserted into the window 11 as shown in FIG.

When the printed circuit board 2 is leveled at this position, the pins 18 projecting from the bottom wall 6
And the position of the package is determined. Thereafter, the open surface of the housing 1 is closed by the cover plate 20, and the projections 21 provided on the cover plate 20 are engaged with the corresponding notches 22 of the side walls 8 and 9 of the housing and fixed. As a result, the holding pieces 23 hanging downward from the cover plate 20 hold down the connector 4 on the printed board 2 and prevent the rear end of the printed board 2 from moving upward. On the other hand, since the front end of the printed circuit board 2 is held by the concave portion 16 of the stopper, the position of the package is fixed by both.

In the example described above, the inclined surface 14 is provided on the bottom wall 6 of the housing 1 to guide the front edge of the printed circuit board 2. However, the inclined surface is not provided on the bottom wall 6, and instead shown in FIG. In this manner, the base of the stopper 15 may be formed in a tapered shape and guided to the recess 16.

[0014]

According to the present invention, by providing the inclined surface on the bottom wall of the housing, if the front end of the printed circuit board is advanced along the front surface, the front end of the light emitting diode is naturally engaged with the stopper and the front end of the light emitting diode is simultaneously formed. Since it is inserted into the window of the housing, it is possible to store the package in the housing with one hand operation,
The assembly work of the device can be made more efficient. Also,
Application of the automatic assembling apparatus is also facilitated.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a housing structure of the present invention.

FIG. 2 is a side sectional view of the housing structure of the present invention.

FIG. 3 is a side view showing a mounted state of a light emitting diode according to the present invention.

FIG. 4 is a side view showing another embodiment of the stopper of the present invention.

FIG. 5 is a side sectional view of a conventional housing structure.

[Description of Signs] 1 ... Housing 2 ... Printed circuit board 3 ... Electronic component 4 ... Connector 5 ... Light emitting diode 6 ... Bottom wall 7,8,9,10 ... Side wall 11 ... Window 12 ... Guide 13 ... Connector opening 14 ... Slope Surface 15: Stopper 16: Recess 17: Base 18 ... Pin 19: Hole 20: Cover plate

Claims (1)

(57) [Claims] An inside of a box-shaped housing (1) having a bottom wall (6) having a rectangular shape and being surrounded by side walls (7, 8, 9, 10) and having an open top surface, has one end. It has a housing structure in which a package formed of a rectangular printed circuit board (2) on which a plurality of light emitting diodes (5) oriented in the horizontal direction are mounted on the edge is accommodated, and the opening is covered with a lid (20) and sealed. One of the side walls (7) is provided with a window (11) into which the tip of the light emitting diode (5) is inserted, and a bottom wall portion near the side wall (7) rises toward the side wall. And a stopper (15) for locking an edge of the printed circuit board (2). The printed circuit board (2) is formed along the inclined surface (14) when the package is stored. Insert the light emitting diode (5) into the window (11) while guiding the edge of A housing structure characterized by being inserted.