JPH05110141A - LED cover fixing method - Google Patents

Abstract

(57) [Abstract] [Purpose] The LED cover fixing method should be easy and reliable to assemble. [Structure] The LED cover 5 is supported by the ribs 2 provided upright on the case body 1, and the positioning protrusions 6 of the LED cover 5 are inserted into the positioning holes 3 formed in the case body 1.
The LED cover 5 is sandwiched between the rib 2 and the printed circuit board 7, and the printed circuit board 7 is fixed to the support column 4 of the case body 1 with the mounting screws 9 or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing an LED (Light Emitting Diode) cover used in an electric device such as a telephone.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional LED cover fixing structure, where 11 is a case body, 12 is a rib provided on the case body 11, and 13 is a positioning hole. 14
Is an LED cover, 15 is a positioning protrusion provided on the LED cover 14, and 16 is a protrusion for ultrasonic welding.

Next, a method of fixing the LED cover in the above conventional example will be described. First, the positioning protrusion 15 of the LED cover 14 is fitted into the positioning hole 13 of the case body 11, and the LED cover 14 is fixed between the ribs 12 of the case body 11 while melting the protrusion 16 by ultrasonic welding. As another method, there is a method of fixing the LED cover to the case body by adhesion.

[0004]

However, in the above-described conventional LED cover fixing method, since the positioning protrusions of the LED cover are simply inserted and supported in the positioning holes of the main body case, the LED cover is fixed during ultrasonic welding or bonding. There was a problem that it took a lot of time and effort to assemble it as it came off the case body.

The present invention solves such a conventional problem, and provides an excellent LED cover fixing method which allows easy and reliable assembly without the LED cover coming off the main body case during assembly. To aim.

[0006]

In order to achieve the above-mentioned object, the present invention supports an LED cover on a rib provided upright on a case body, and a positioning protrusion of the LED cover on a positioning hole formed in the case body. Is inserted, the LED cover is sandwiched between the rib and the printed circuit board, and the printed circuit board is fixed to the case body.

[0007]

Therefore, according to the present invention, the LED cover is supported by the rib of the case body, and the positioning protrusion of the LED cover is inserted into the positioning hole of the case body.
Moreover, since the LED cover is sandwiched between the rib of the case main body and the printed circuit board, the LED cover does not come off from the main body case during assembly, so that the LED cover can be assembled easily and surely.

[0008]

FIG. 1 shows an LED cover fixing structure according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a case body made of an opaque resin, which has a front plate 1a and a base plate 1b formed in an L shape. 2 is the case body 1
Is a pair of ribs projecting from the back side of the front plate 1a of
Is a rectangular positioning hole formed above the middle portion of the two ribs 2. Reference numeral 4 denotes a pair of columns that are erected on the base plate 1b, and have a mounting hole 4a at the upper end surface thereof. Reference numeral 5 is an LED cover made of transparent resin, which has an L-shaped standing wall portion 5a and leg portions 5b. Reference numeral 6 denotes a rectangular positioning protrusion provided on the front side of the standing wall portion 5a of the LED cover 5, and is inserted into the positioning hole 3 of the case body 1. Reference numeral 7 denotes a printed circuit board, which has an LED accommodating concave portion 7a formed in the front portion and a pair of mounting holes 7b formed on both sides of the rear portion. 8
Is an LED, and the LED storage recess 7 a of the printed circuit board 7
It is mounted in the state of being housed in. 9 is a mounting screw,
It is inserted into the mounting hole 7b.

Next, a method of fixing the LED cover in the above embodiment will be described with reference to FIGS. 1 and 2. First, the leg portion 5b of the LED cover 5 is attached to the rib 2 of the case body 1.
And the positioning protrusion 6 is inserted into the positioning hole 3 of the case body 1, and the standing wall portion 5a of the LED cover 5 is brought into contact with the back side of the front plate 1a of the case body 1. Next, the front portion of the printed circuit board 7 is placed on the upper surface of the leg portion 5b of the LED cover 5, the rear portion is placed on the pillar 4, and the front end face thereof is brought into contact with the back side of the standing wall portion 5a of the LED cover 5. Then, the mounting screw 9 is inserted from the mounting hole 7b and screwed into the mounting hole 4a of the support column 4 to fix the printed circuit board 7 to the case body 1.

Since the case body 1 having the positioning hole 3 is an opaque resin-formed product and the LED cover 5 is a transparent resin-formed product, light emitted from the LED 8 mounted on the printed circuit board 7 is stored in the positioning hole 3. The light is emitted to the front side of the case body 1 through the positioning protrusion 6.

As described above, according to the above embodiment, the LED cover 5 is supported by the ribs 2 and the positioning holes 3 of the case body 1, and the ribs 2 of the case body 1 and the printed circuit board 3 form the LED cover 5. By sandwiching and fixing the printed circuit board 7 to the support column 4 of the case body 1 using the mounting screws 9, it is possible to use special parts without using the conventional fixing method by ultrasonic welding or adhesion. Without, the LED cover 5 can be easily and surely fixed to the case body 1.

In the above embodiment, the printed circuit board 7 is fixed to the case body 1 by using the mounting screw 9, but instead of this, another fixing method such as fitting may be used.

[0013]

As is apparent from the above-described embodiment, the present invention supports the LED cover on the ribs provided upright on the case body, and the LED is provided in the positioning hole formed on the case body.
The positioning protrusion of the cover is inserted, the LED cover is sandwiched between the rib and the printed circuit board, and the printed circuit board is fixed to the case body.
Easy to attach the LED cover to the case body without removing the cover and using special parts.
It has an effect that it can be surely performed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an LED cover fixing structure to which an embodiment of the present invention is applied.

FIG. 2 is a sectional view of the LED cover fixing structure.

FIG. 3 is an LE to which a conventional LED cover fixing method is applied.
Exploded perspective view of D cover fixing structure

[Explanation of symbols]

 1 Case body 2 Rib 3 Positioning hole 4 Strut 5 LED cover 6 Positioning protrusion 7 Printed circuit board 8 LED 9 Mounting screw

Claims (1)

[Claims] 1. The LED cover is supported by ribs provided upright on the case body, and a positioning protrusion of the LED cover is inserted into a positioning hole formed in the case body to form the L cover.
A method of fixing an LED cover, wherein an ED cover is sandwiched between the rib and a printed circuit board, and the printed circuit board is fixed to the case body.