JPS6218061Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an LED holder.

Conventionally, to mount an LED (light emitting diode) on a printed circuit board, the two pin terminals of the LED are inserted into the through holes of the printed circuit board, and the locking protrusion protruding in the middle of the pin terminals is inserted into the through hole of the printed circuit board. There is a method of attaching the LED directly to the printed circuit board by locking it around the hole.
However, according to this, the LED is simply held on the printed circuit board by the protrusion,
If an upward force is applied to the tip of the pin terminal protruding from the bottom of the printed circuit board, there is an inconvenience that the LED will lift up from the printed circuit board and move upward. In other words, this applies to the case where the pin terminals and the wiring pattern on the printed circuit board are soldered from the back side of the printed circuit board by so-called date pinning, and the disadvantage is that the LED is soldered slightly upward from its original position. It was hot.

In order to eliminate this drawback, a holder that can hold the LED is formed, and the holder is placed on a printed circuit board to prevent the LED from moving during day-setting, etc., and the LED is placed at a predetermined height. However, this type of holder is generally configured to hold almost the entire LED body excluding the pin terminal, so it can be used with various types of holders whose body shapes differ depending on the manufacturer and rating.
It was not possible to create a structure that would suit all types of LEDs, and the holder lacked the compatibility and versatility that would allow a single holder to hold many types of LEDs.

This invention was proposed in view of the above points, and its purpose is to have compatibility that can hold various LEDs with different body shapes, and
To provide an LED holder which securely holds an LED on a printed circuit board and prevents the LED from moving during printing or the like.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, 1 is a substantially cylindrical main body made of plastic with a flat upper end surface 1a;
A through hole 2 having a flat rectangular cross section is bored inside the main body 1 over the entire axial length of the main body 1 . In this through hole 2, a substantially rectangular parallelepiped-shaped central protrusion 3 is formed which is connected to the main body 1 divided into two by the through hole 2. The central protrusion 3 is disposed slightly above the center in the height direction of the main body 1, and has notches 3a formed on both sides of its upper end to facilitate insertion of the pin terminals 11 of the LED 10. Note that the length of the lower end surface 3b of the central protrusion 3 from the mounting surface 1a is determined by the length between the lower end surface of the LED main body 10a and the pin terminal 11 that is fixed to the printed circuit board P provided in advance in the middle. It is necessary to make the length approximately equal to the length between the upper end of the projection 11a and the upper end of the projection 11a. The central protrusion 3 divides the through hole 2 into a pair of terminal insertion holes 4a and 4b along the axial direction of the main body 1.

Approximately inverted L-shaped support legs 5a and 5b are vertically disposed at the upper end of the outer periphery of the main body 1 at positions separated by 180 degrees in the circumferential direction. The support legs 5a, 5b are integrally molded with the main body 1 and have appropriate elasticity, and have a locking end 6a on the lower end surface that locks on the periphery of the through hole P' on the back surface of the printed circuit board P. ,6b
It is equipped with Note that the lower ends of the locking ends 6a, 6b are formed into a sharp shape to facilitate insertion into the through hole P'.

However, in order to use this, when the pin terminal 11 of the LED 10 is inserted into the terminal insertion holes 4a and 4b of the main body 1, the position of the protrusion 11a of the pin terminal 11 is located below the central protrusion 3 as described above. Since the position of the end surface 3b is adjusted in advance, the lower end surface of the LED main body 10a is placed on the mounting surface 1a while the upper end of the protrusion 11a of the pin terminal 11 is locked to the lower end surface 3b of the central protrusion 3. It polymerizes and becomes the state shown in the diagram.
LED10 is fixed. That is, by locking the protrusion 11a to the central protrusion 3, upward movement of the LED 10 is completely prevented.

Next, the locking ends 6a, 6b of the support legs 5a, 5b of the holder to which the LED 10 is attached are attached to the support legs 5.
Using the elasticity of the pin terminals a and 5b, the pin terminals 11 are inserted into the through hole P' of the printed circuit board P, and the locking ends 6a and 6b are locked on the back surface of the printed circuit board P, and the pin terminal 11 is inserted into the through hole P' of the printed circuit board P. After that, the unnecessary part of the pin terminal 11 is cut off, and the electrical connection between the pin terminal 11 and the wiring pattern of the printed circuit board P is made by dipping or the like from the back side of the printed circuit board P. .In addition, in the figure,
Q indicates solder.

As described above, according to the present invention, there is provided a main body having a flat mounting surface on which the LED main body is placed, and a central protrusion that engages the protrusion of the pin terminal of the LED from above; The entire structure consists of support legs that fix the board onto the printed circuit board.
The structure for holding the LED body only needs to be a flat mounting surface, and there is no need for a special structure depending on the shape of the LED body.
This holder has the compatibility and versatility to hold many types of LEDs in a single holder even if the LED manufacturers and ratings differ. In addition, since the protrusion of the pin terminal is used and the central protrusion is locked to this protrusion from above, there is no risk of the LED moving upwards even if an upward force is applied to the pin terminal during date pinning, etc. This has the advantage of allowing soldering to be carried out with the LED body positioned at a predetermined height.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a vertical cross-sectional view of the device attached to a printed circuit board, and Fig. 2 is a cross-sectional view taken along the line A-A in Fig. 1. 1: main body, 1a: mounting surface, 2: through hole, 3
. . . central protrusion, 3a . . . notch, 3b . . . lower end surface, 4a, 4b . . . terminal insertion holes, 5a, 5b . . .
Support legs, 6a, 6b.... Engagement end, 10...
LED, 10a... LED body, 11... pin terminal, 11a... protrusion, P... printed circuit board, P',
P″…through hole.

Claims (1)

[Scope of utility model registration request] It has a flat mounting surface 1a on which the LED main body 10a is mounted, and terminal insertion holes 4a and 4b into which the pin terminal 11 of the LED 10 can be inserted, and is provided in the middle of the pin terminal 11. A main body 1 comprising a central projection 3 that can be engaged with the projection 11a from above, and a support leg 5 that is connected to the main body 1 and that is engaged in a through hole P' of a printed circuit board P.
An LED characterized by being composed of a and 5b.
holder.