JPH058688Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to fixing a light emitting diode used in electronic equipment, particularly a light emitting diode having two lead parts bent in an L shape in advance, to a printed wiring board. This invention relates to a light emitting diode fixing device.

[Conventional technology]

A conventional light emitting diode fixing device of this kind and a method of fixing a light emitting diode to a printed wiring board using the device will be explained with reference to FIGS. 1 to 3.

In the figure, 1 is a light emitting diode, and this light emitting diode 1 includes a molded main body 2 and a flange portion 3 integrally formed at the rear end of the main body 2.
It has two lead parts 4 which protrude from the rear surface of the main body 2 and are bent into an L shape.

5 is a light emitting diode fixing device, and this light emitting diode fixing device 5 consists of a base body 7 having a mounting hole 6 into which the light emitting diode 1 is attached, and fixing legs 8 that protrude downward from both sides of the base body 7. The mounting hole 6 has a stopper surface 9 against which the front surface of the flange portion 3 of the light emitting diode 1 comes into contact, and a locking claw 10 is formed at the lower end of the fixing leg portion 8.

11 is a printed wiring board, and this printed wiring board 11 is provided with lead insertion holes 12 and leg insertion holes 13 at predetermined positions, respectively.

Therefore, when fixing the light emitting diode 1 to the printed wiring board 11 using the light emitting diode fixing device 5, as shown in FIG. is inserted to make the front part of the main body 2 protrude in front of the light emitting diode fixing device 5, and
The front surface of the flange portion 3 is brought into contact with the stopper surface 9 in the mounting hole 6.

After the light emitting diode 1 is attached to the light emitting diode fixing device 5 in this way, the lead part 4 of the light emitting diode 1 is inserted into the lead insertion hole 12 provided in the printed wiring board 11, and the fixing leg of the light emitting diode fixing device 5 is inserted. 8 into the leg insertion holes 13 of the printed wiring board 11, and the locking claws 10 are inserted into the printed wiring board 1.
1, and then the lead portion 4 is soldered to the printed wiring board 11.

However, in such a conventional light emitting diode fixing device, if an external force is applied to the light emitting diode from the front side after the light emitting diode is fixed to the printed wiring board together with the light emitting diode, the lead part of the light emitting diode will be damaged because there is no stopper toward the rear side. This has the disadvantage that the light emitting diode is bent and the light emitting diode moves backwards, and the light emitting diode fixing device itself also has the disadvantage that the fixing legs easily come off from the leg insertion holes of the printed wiring board if force is applied from the front. However, it also had the disadvantage of requiring frequent correction work and lacking in appearance and reliability.

[Purpose of invention]

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and can prevent the light emitting diode from moving due to external force after it is fixed to the printed wiring board together with the light emitting diode, and the light emitting diode fixing device itself can also be prevented from moving due to external force. This prevents the light emitting diode from coming off the printed wiring board, improving appearance and reliability, and when fixing the light emitting diode to the printed wiring board, insert the lead part of the light emitting diode into the lead insertion hole of the printed wiring board. It is an object of the present invention to provide a light emitting diode fixing device with good assemblability that can be positioned with respect to the light emitting diode.

[Structure of the idea]

In order to achieve this object, the present invention provides a light emitting diode having a flange portion formed at the rear end of the main body and two lead portions protruding from the rear surface of the main body and formed in an inverted L shape in advance. The light emitting diode fixing device is for fixing the light emitting diode to the printed wiring board so that the leads are parallel to the printed wiring board, and the whole is integrally formed of resin, and the two lead parts of the light emitting diode are attached to the front side. It has a diameter that allows it to be inserted from the side at the same time and passes through to the rear side, and forms a stopper surface that can position the lead part with respect to the lead insertion hole of the printed wiring board by bringing the rear face of the flange part of the light emitting diode into contact with it. a base body having one mounting hole; a protrusion located below the mounting hole and protruding rearward from the lower end of the rear surface of the base body; two fixing legs protruding downward from both lower sides of the base, an inverted trapezoidal locking part formed at the lower end of each fixing leg, and a locking part provided on the locking part. It is characterized by having a vertical slit.

〔Example〕

Examples will be described below with reference to the drawings.

FIG. 4 is a diagram showing an embodiment of a light emitting diode fixing device according to the present invention.

FIG. 5 is a perspective view showing a method for fixing a light emitting diode by the light emitting diode fixing device of FIG.

In the figure, 14 is a light emitting diode fixing device,
This light emitting diode fixing device 14 is integrally formed entirely of resin and has the following structure.

That is, as shown in FIG. 4, reference numeral 15 is a base body of the light emitting diode fixing device 14, and this base body 15 is provided with one mounting hole 16 to which the light emitting diode 1 can be mounted from the front side. A step-shaped stopper surface 17 is formed within the stopper surface 16 .

A protrusion 18 is formed at the lower end of the rear surface of the base body 15 so as to be positioned below the mounting hole 16, and a protrusion 18 is formed so as to protrude rearwardly, and a fixing leg portion 19 that protrudes downward is formed at the bottom of both sides of the base body 15. An inverted trapezoidal locking portion 20 is formed at the lower end of each fixing leg portion 19, and each locking portion 20 is further provided with a vertical slit 21. ing.

Note that the light emitting diode 1 has the same structure as that in FIG. 1, and the printed wiring board 11 also has lead insertion holes 12 and leg insertion holes 13.
The leg insertion hole 13 is formed to match the shape of the fixing leg 19.

In this embodiment, when fixing the light emitting diode 1 to the printed wiring board 11 using the above-mentioned light emitting diode fixing device 14, first, as shown in FIG. The two lead parts 4 are simultaneously inserted into the mounting holes 16 from the front side of the base body 15.

Next, as shown by arrow A, the main body 2 of the light emitting diode 1 is raised and the lead part 4 is attached to the base 15.
When the rear surface of the light emitting diode 1 is inserted into the mounting hole 16 and the rear surface of the flange portion 3 is brought into contact with the stopper surface 17 provided in the mounting hole 16, this state is achieved. The bent portion of the lead portion 4 is positioned along the rear surface of the base body 15 at the same time.

After the light emitting diode 1 is thus mounted in the mounting hole 16 of the light emitting diode fixture 14, the lead portions 4 of the light emitting diode 1 are inserted into the lead insertion holes 12 provided in the printed wiring board 11, and
The inverted trapezoidal locking portions 20 formed at the lower ends of the fixing legs 19 of the light emitting diode fixing device 14 are press-fitted into the leg insertion holes 13, respectively.

At this time, the lead portion 4 of the light emitting diode 1 is
As described above, since the flange portion 3 of the main body 2 is in a positioned state by abutting against the stopper surface 17 in the mounting 16, the leg insertion hole 13 of the locking portion 20 of the fixing leg portion 19 is positioned. The lead insertion hole 12 can be smoothly inserted at the same time as the lead insertion hole 12 is press-fitted into the lead insertion hole 12.

On the other hand, since the locking portion 20 is provided with a slit 21, it narrows inward due to the elasticity of the resin when passing through the leg insertion hole 13, and widens after passing through the leg insertion hole 13. Securely locks on the back.

As a result, the light emitting diode 1 is connected to the printed wiring board 11.
After that, the light emitting diode 1 is attached to the printed wiring board 11 by soldering the lead portion 4 to the printed wiring board 11.

[Effect of idea]

As explained above, the light emitting diode fixing device of the present invention is formed entirely of resin and has a diameter that allows the two lead parts of the light emitting diode to be inserted simultaneously from the front side and pass through to the rear side. , and a base body having one mounting hole forming a stopper surface that allows positioning of the lead portion with respect to the lead insertion hole of the printed wiring board by abutting the rear surface of the flange portion of the light emitting diode, and a base body below the mounting hole. a protrusion located at and protruding rearward from the lower end of the rear surface of the base; and a protrusion protruding downward from both lower sides of the base so as to be insertable into the leg insertion hole of the printed wiring board. 2
The structure includes book fixing legs, an inverted trapezoidal locking part formed at the lower end of each fixing leg, and a vertical slit provided in the locking part. The effect of this can be obtained.

First, when the light emitting diode is fixed to the printed circuit board together with the light emitting diode, the rear part of the light emitting diode is in the mounting hole of the base, the rear surface of the flange provided on the main body is in contact with the stopper surface in the mounting hole, and the light emitting diode also emits light. Since the bent part of the lead part provided on the diode is located along the rear surface of the base, the light emitting diode will not only be affected by an external force from the front, but also by an external force applied from any direction. It does not move, and when it is fixed to the printed wiring board, the rear surface of the flange provided on the main body of the light emitting diode is brought into contact with the stopper surface in the mounting hole, so that the lead is inserted into the lead insertion hole of the printed wiring board. Since the fixing legs can be inserted into the leg insertion holes of the printed wiring board, the lead parts can be inserted into the lead insertion holes of the printed wiring board at the same time, making assembly easier. The result is improved performance.

In addition, a protrusion is formed on the lower end of the rear surface of the base to eliminate wobbling after fixing, and an inverted trapezoidal locking part is formed on the lower end of the fixing leg and is press-fitted into the leg insertion hole of the printed wiring board. Because of this structure, even if a slight force is applied from the front of the base, the fixing legs will not come off or the base will not wobble, resulting in improved reliability and no need for correction work.
Furthermore, since the restrictions such as not applying force to the light emitting diodes during handling of the printed wiring board are relaxed, there is also the effect that there is no need to be careful when handling the printed wiring board.

Furthermore, as mentioned above, the movement of the light emitting diodes due to external force can be prevented, and the light emitting diode fixing device itself does not wobble, so when a plurality of light emitting diodes are fixed to a printed wiring board, the positions of their tips can be aligned. The effect of improving the appearance is also obtained.

[Brief explanation of the drawing]

Figure 1 is a side view of a light emitting diode, and Figure 2 is a diagram showing a conventional light emitting diode fixing device.
3 is a plan view, b is a front view, c is a side view, FIG. 3 is a perspective view showing a conventional method for fixing a light emitting diode, and FIG. Figures illustrating the embodiment, in which figure a is a plan view, figure b is a front view, figure c is a side view,
FIG. 5 is a perspective view illustrating a method of fixing a light emitting diode using a fixture according to the present invention. DESCRIPTION OF SYMBOLS 1... Light emitting diode, 2... Main body, 3... Flange part, 4... Lead part, 11... Printed wiring board, 12... Lead insertion hole, 13... Leg insertion hole, 14... Light emitting diode Fixed equipment, 15...
Base body, 16... Mounting hole, 17... Stopper surface, 1
8...Protrusion, 19...Fixing leg portion, 20...Locking portion, 21...Slit.

Claims (1)

[Claims for Utility Model Registration] A flange portion formed at the rear end of the main body and a flange portion formed in advance in an inverted L shape so as to protrude from the rear surface of the main body.
A light emitting diode fixing device for fixing a light emitting diode having a book lead portion to a printed wiring board so that the main body is parallel to the printed wiring board, the whole being integrally formed of resin. , the diameter is such that the two lead parts of the light emitting diode can be inserted simultaneously from the front side and pass through to the rear side,
and a base body having one mounting hole forming a stopper surface that allows positioning of the lead portion with respect to the lead insertion hole of the printed wiring board by abutting the rear surface of the flange portion of the light emitting diode, and below the mounting hole. a protrusion located at and protruding rearward from the lower end of the rear surface of the base; and a protrusion protruding downward from both lower sides of the base so as to be insertable into the leg insertion hole of the printed wiring board. It is characterized by comprising two fixing legs, an inverted trapezoidal locking part formed at the lower end of each fixing leg, and a vertical slit provided in the locking part. Light emitting diode fixture.