JPH06224569A - Apparatus for mounting light emitting diode - Google Patents

Abstract

PURPOSE:To surely make engage the engaging pawl of the legs in a holder for holding light emitting diodes, with the engaging holes in a wiring board. CONSTITUTION:A synthetic resin holder 9, which receives and holds light emitting diodes 6, has a plurality of legs having an engaging pawl 11 at their end; the holder 9 is installed on a wiring board 17 by fitting the engaging pawls 11 into the engaging holes in the board 17. Each engaging pawl 11 has a guiding section 16 including a slope 16a on its rear face. Even if a leg 12 is deformed in the opposite direction to the direction (direction of arrow A) in which an engaging pawl 11 is engaged with an engaging hole 18, the slope 16a 12 is put in contact with the edge of the engaging hole 18, and thereby corrects the leg 12 in the direction of arrow A. This secures the engaging pawl 11 in the engaging hole 18 reliably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode mounting apparatus for mounting a light emitting diode on a wiring board.

[0002]

2. Description of the Related Art For example, in an operation panel portion of a washing machine, a plurality of light emitting diodes for displaying a washing process and the like are used. These light emitting diodes are generally attached to a wiring board as follows. There is.

That is, a plurality of light emitting diodes are held in a holder made of synthetic resin, and the holder is provided with engaging claws provided at the tips of a plurality of legs of the holder in the engaging holes of the wiring board. Each is inserted and engaged to be mounted on the wiring board. At this time, the pair of terminals of each light emitting diode are inserted into the terminal insertion holes of the wiring board. After that, each terminal is connected to the land of the wiring board by soldering.

[0004]

By the way, most of the holders of this kind are made of synthetic resin, and the legs may be deformed. Especially when the leg is deformed in the direction opposite to the direction in which the engaging claw engages with the engaging hole, even if the engaging claw is inserted into the engaging hole, the engaging part with respect to the engaging hole is engaged. The engagement of the dowel may be insufficient, and in such a case, the mounting state becomes unstable. In addition, when the legs are deformed, it is difficult to insert the engaging claw into the engaging hole, and it is difficult to insert the engaging claw, which means that it is difficult to insert the terminal of the light emitting diode into the terminal inserting hole. It also becomes.

Further, since the terminals of the light emitting diode are relatively long and the distance between the terminals is relatively narrow, there is a problem that the terminals are easily touched by a slight deformation of the terminals. It becomes a cause.

Further, the light emitting diode has an anode terminal and a cathode terminal, and these terminals have polarities. Conventionally, however, a pair of terminals of the light emitting diode are inserted into a pair of terminal insertion holes of the wiring board. Therefore, there is a risk that the light-emitting diode may be attached with the wrong polarity because the light-emitting diode is inserted in a state opposite to the normal one.

Therefore, a main object of the present invention is to make it possible to securely engage the engaging claws of the legs of the holder for holding the light emitting diode with the engaging holes of the wiring board, and to insert the terminal of the light emitting diode into the terminal. Another object of the present invention is to provide a device for mounting a light emitting diode that can be easily inserted into a hole. For another purpose, it is possible to prevent a pair of terminals of the light emitting diode from contacting each other, and to mount the light emitting diode without mistaken polarity. Another object of the present invention is to provide a mounting device for a light emitting diode that can perform

[0008]

SUMMARY OF THE INVENTION According to the present invention, a light emitting diode having a pair of terminals is held in a holder, and the holder is wired with engaging claws provided at the tips of a plurality of legs of the holder. In a light emitting diode mounting device configured to be inserted into and engaged with a wiring board by being engaged with an engaging hole of a board, respectively, and a pair of terminals of the light emitting diode are respectively inserted into terminal insertion holes of the wiring board, A guide portion having an inclined surface for guiding the engaging claw in the engaging direction in cooperation with the edge of the engaging hole is provided on the back side of the engaging claw in each of the legs. is there.

In this case, it is preferable that the holder is provided with a partition portion for partitioning between the pair of terminals of the light emitting diode while holding the light emitting diode.

Further, in the holder having a concave fitting portion into which the element body portion of the light emitting diode is fitted,
It is preferable that the fitting portion and the element body portion are provided with positioning means for determining the mounting direction of the element body portion with respect to the fitting portion.

[0011]

When the engaging claws of the leg portions of the holder are inserted into the engaging holes of the wiring board, the leg portions are deformed to the side opposite to the direction in which the engaging claws engage with the engaging holes. In this case, the inclined surface of the guide portion abuts on the edge of the engaging hole to correct the engaging claw in the direction in which the engaging claw is engaged with the engaging hole, so that the engaging claw is reliably engaged with the engaging hole. be able to. At this time, the inclined surface of the guide portion also serves as a guide when inserting the engaging claw into the engaging hole, so that the engaging claw can be easily inserted into the engaging hole, and eventually the terminal of the light emitting diode can be inserted into the terminal inserting hole. Easier to do.

When the holder is provided with the partition portion, the partition portion partitions the pair of terminals in a state where the holder holds the light emitting diode, so that the terminals can be prevented from contacting each other. Further, when the positioning means is provided in the element body of the light emitting diode and the fitting portion of the holder to which the element body is fitted, the element body is always fitted in the fitting portion in the proper direction, As a result, the light emitting diode can be attached to the wiring board without confusing the polarity.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 6 shows an external view of the washing machine 1, and the top cover 2 at the top of the washing machine 1 is
A panel 3 having an operation surface and a display surface is provided. Below the panel 3, an electric circuit device 5 covered with a cover 4 is provided as shown in FIG.

The electric circuit device 5 has a control circuit (not shown) equipped with a microcomputer for controlling a washing operation, and a plurality of display circuits for displaying a washing process as shown in FIG. A light emitting diode 6 and the like are provided. Hereinafter, regarding the mounting structure of the light emitting diode 6,
It will be described mainly with reference to FIGS.

The light emitting diode 6 has a pair of terminals 8 and 8 (see FIG. 5) consisting of an anode terminal and a cathode terminal on the lower surface of the element body 7. The element body portion 7 has a collar portion 7a, and this collar portion 7a is a straight line for forming a positioning means for determining the mounting direction of the element body portion 7 on the side surface, as shown by the chain double-dashed line in FIG. It has a portion 7b and is formed in a D-shape in a plan view.

The holder 9 for holding the light emitting diode 6 is
A plurality of concave fitting portions 10 for fitting and holding the element main body portion 7 of the light emitting diode 6 are provided on the upper surface side of the synthetic resin integrally formed, and on the outer peripheral portion on the lower surface side. Is provided with a plurality of legs 12 each having an engaging claw 11 at its tip.

Here, the fitting portion 10 has a circular shape as a whole, a through hole 13 is formed in the central portion thereof, and the mounting direction of the element body 7 together with the linear portion 7b is determined at a predetermined portion on the upper surface side. The convex portion 14 for forming the positioning means is formed. Further, a partition portion 15 is provided on the back side of the holder 9 so as to partition each of the through holes 13 into two.

The engaging claws 11 of the leg portions 12 are formed so as to project outward, respectively, and are opposite to the back side of the engaging claws 11 of the leg portions 12, that is, the protruding direction of the engaging claws 11. The guide portion 16 is provided on the side (inside) and extends in the vertical direction. An inclined surface 16a is formed in the lower portion of each guide portion 16 as shown in FIG.

On the other hand, in the wiring board 17 which is a printed wiring board, the engaging holes 1 corresponding to the engaging claws 11 of the holder 9 are formed.
8, and a terminal insertion hole 19 for inserting the terminal 8 of each light emitting diode 6 is formed, and although not shown,
A predetermined wiring pattern is provided, and lands are provided around each terminal insertion hole 19.

Next, a procedure for mounting the light emitting diode 6 on the wiring board 17 will be described. First, in order to hold the light emitting diode 6 in the holder 9, the pair of terminals 8, 8 is inserted into the through hole 13, and the collar portion 7a of the element body portion 7 is fitted into the fitting portion 1.
Fit to 0.

At this time, since the collar portion 7a has a D-shape and the fitting portion 10 is provided with the convex portion 14, the fitting portion 10 is formed.
If the orientation of the collar portion 7a with respect to, and hence the mounting direction of the element body portion 7 is different from the normal state, the collar portion 7a cannot be fitted to the fitting portion 10, and therefore the fitting portion 10 is On the other hand, the mounting direction of the element body portion 7 will not be mistaken.
Further, since the partition portion 15 exists between the pair of terminals 8 and 8 and the partition portion 15 partitions the terminals 8 and 8, the terminals 8 and 8 are prevented from contacting each other as much as possible. can do.

While the light emitting diode 6 is held by the holder 9, the engaging claws 11 of the legs 12 are inserted into the engaging holes 18 of the wiring board 17 to engage with each other, and the terminals of the light emitting diode 6 are also engaged. 8 is inserted into the terminal insertion hole 19.

At this time, when the leg portion 12 is deformed in the direction opposite to the direction in which the engaging claw 11 engages with the engaging hole 18 (direction of arrow A in FIG. 1), the guide portion 16 is formed. Slope 16
When a comes into contact with the edge of the engaging hole 18, the engaging claw 1
Since 1 is corrected in the direction of engaging with the engaging hole 18 (direction of arrow A), the engaging claw 11 can be reliably engaged with the engaging hole 18. Further, the inclined surface 16a of the guide portion 16 also serves as a guide when the engaging claw 11 is inserted into the engaging hole 18, so that the engaging claw 11 can be easily inserted into the engaging hole 17, and thus the light emitting diode 6 can be easily inserted. It becomes easy to insert the terminal 8 into the terminal insertion hole 19.

Further, in this case, since each light emitting diode 6 is always fitted and held in the fitting portion 10 in the proper mounting direction, the polarity of the terminal 8 is not attached to the wiring board 17 by mistake. .

After the light emitting diode 6 is mounted on the wiring board 17 in this manner, the terminals 8 are connected to the lands of the wiring board 17 by soldering 20 (see FIG. 1). Installation to 17 is completed.

In the above-described embodiment, the positioning means for determining the mounting direction of the element body 7 of the light emitting diode 6 is the linear portion 7b of the collar portion 7a of the element body portion 7 and the convex portion 14 of the fitting portion 10. However, as the positioning means, for example, a convex portion is provided on the outer peripheral portion of the circular collar portion in the element body portion 7, and a concave portion into which the convex portion is fitted is provided in the fitting portion. You may comprise from the part and the recessed part of a fitting part.

[0027]

According to the light emitting diode mounting device of the first aspect of the present invention, the engaging claw is engaged with the rear side of the engaging claw in each leg of the holder in cooperation with the edge of the engaging hole. By providing a guide part having a slope that guides in the direction, the leg part
Even if the engaging claw is deformed to the side opposite to the direction in which it engages with the engaging hole, the engaging claw can be reliably engaged with the engaging hole. In addition, the inclined surface of the guide portion also serves as a guide when inserting the engaging claw into the engaging hole, so that the engaging claw can be easily inserted into the engaging hole, and thus the terminal of the light emitting diode can be inserted into the terminal inserting hole. It will be easier.

According to the light emitting diode mounting apparatus of the second aspect, the partition portion of the holder partitions the terminals of the light emitting diode from each other, thereby preventing the terminals from contacting each other.

According to the light emitting diode mounting device of the third aspect, the element body is provided with the positioning means in the element body of the light emitting diode and the fitting portion of the holder into which the element body is fitted. Will always be fitted to the fitting portion in the proper direction, and by extension, the light emitting diode can be attached to the wiring board without confusing the polarity.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a fitting portion.

FIG. 3 is a plan view of a holder

[Fig. 4] Bottom view of the holder

FIG. 5 is a front view in which a part of the electric circuit device is cut away and shown.

FIG. 6 is an external perspective view of the washing machine.

FIG. 7 is a vertical sectional side view of a panel portion.

[Explanation of symbols]

6 is a light emitting diode, 7 is an element main body, 7b is a linear portion (positioning means), 8 is a terminal, 9 is a holder, 10 is a fitting portion, 11 is an engaging claw, 12 is a leg portion, and 14 is a convex portion ( (Positioning means), 15 is a partition part, 16 is a guide part, 16a is an inclined surface, 17 is a wiring board, 18 is an engagement hole, and 19 is a terminal insertion hole.

Claims (3)

[Claims] 1. A light emitting diode having a pair of terminals is held in a holder, and the holder is inserted into engaging holes of a wiring board by engaging claws provided at tip ends of a plurality of legs of the holder. And a pair of terminals of the light emitting diode are inserted into the terminal insertion holes of the wiring board, respectively. A device for mounting a light-emitting diode, characterized in that a guide portion having a sloped surface that guides the engaging claw in the engaging direction in cooperation with the edge of the engaging hole is provided on the back side of the claw. 2. The mounting device for a light emitting diode according to claim 1, wherein the holder has a partitioning portion that partitions a pair of terminals of the light emitting diode while holding the light emitting diode. 3. The holder has a recessed fitting portion to which the element body portion of the light emitting diode is fitted, and the positioning for determining the mounting direction of the element body portion with respect to the fitting portion and the element body portion. The mounting device for a light emitting diode according to claim 1 or 2, further comprising means.