JPH0353477Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to lead wires for electric circuit elements such as resistors and capacitors, particularly semiconductor elements such as transistors, light emitting elements, and light receiving elements.

[Conventional technology and problems]

Conventionally, in such an electric circuit element, a plurality of lead wires extend in parallel from one side of the casing of the electric circuit element. When mounting these electric circuit elements on a printed circuit board, for example, in the case of a capacitor having two lead wires, as shown in FIG. In order to fix the capacitor to the capacitor, bent portions 3a and 4a which protrude inward from each other are formed in advance at predetermined positions of the lead wires 3 and 4 arranged in the transverse direction, that is, at a distance l from the casing. 1 lead wires 3 and 4 at the bent part 3
A, 4a are inserted into the hole 2a of the printed circuit board 2 until they come into contact with the upper surface of the printed circuit board 2, and then soldered.

However, in the capacitor 1 configured as described above, when the lead wires 3 and 4 are inserted into the hole 2a of the printed circuit board 2, the lead wires 3 and 4 are
Since the capacitor 1 is only loosely fitted to the printed circuit board 2 and may be tilted in the front-back direction, the capacitor 1 must be held upright relative to the printed circuit board 2 during soldering. It was very difficult to perform automatic mounting because it was necessary to perform soldering at the same time.

For example, when mounting light-emitting elements, light-receiving elements, etc. at a predetermined distance on a printed circuit board, insert these elements into the printed circuit board by hand, and then use a special jig to mount them at a specified distance from the printed circuit board. position and solder in this state. In this case, since assembling the element onto the printed circuit board and soldering are separate processes, double man-hours are required for masking, soldering, and assembling, which increases the incidence of misassembled elements. It took about 40 to 50 seconds, and automatic implementation was difficult in this case as well.

[Purpose of invention]

In view of the above points, the present invention is capable of automatic mounting, that is, automatic insertion and soldering into a printed circuit board, which allows for mounting in a short time. ,
It is an object of the present invention to provide an electric circuit element that does not tilt with respect to a printed circuit board.

[Means and actions for solving problems]

According to the present invention, in an electric circuit element having at least two lead wires extending in parallel toward one side, at least two The lead wire has a bent portion projecting perpendicularly to the plane and in opposite directions at a predetermined distance from the casing of the electric circuit element, preferably forming the bent portion on the free end side of the lead wire. This is achieved by a lead wire of an electrical circuit element characterized in that the wire portion extends in a direction perpendicular to the lead wire other than the bent portion.

More preferably, in the electric circuit element, a large number of the electric circuit elements are taped together for automatic mounting, and each electric circuit element has a bent portion in its lead wire.

According to this invention, since the bent portion is provided at a predetermined distance from the casing of the lead wire of the electric circuit element, when the electric circuit element is inserted into the printed circuit board, the free end side of the bent portion is placed on the upper surface of the printed circuit board. By inserting the electric circuit element until it makes contact with the bent part, it is possible to position the electric circuit element at a predetermined distance on the printed circuit board without using a special jig, and the free end side of the bent part can be connected to a lead other than the bent part. If it extends perpendicularly to the line part, this free end side will touch along the top surface of the printed circuit board,
This prevents the electric circuit element from tilting in the front-back direction, making it suitable for automatic mounting such as automatic insertion using a radial component inserter and automatic soldering using a dip tank. Since the bending part can be formed very easily by press forming in the front-back direction, the cost of forming the bent part can be kept low.

In addition, when taping a large number of electrical circuit elements during automatic mounting, it is extremely easy to simply add a pressing process to press the lead wires of each electrical circuit element in a direction perpendicular to the taping surface during the taping process. By changing the specifications, it is possible to include bent parts in the lead wires of electrical circuit elements.
A bent portion can be formed extremely easily.

Therefore, since the assembly and soldering of the electric circuit elements to the printed circuit board are performed in one automatic mounting process, there is no need for masking and only one soldering is required, which can reduce the number of man-hours and reduce the electrical The occurrence of misassembled circuit elements can be completely eliminated.

〔Example〕

Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

FIG. 1 shows an embodiment in which the present invention is applied to a light emitting diode.
1 has two lead wires 12 and 13 extending downward and in parallel. Each lead wire 1
2 and 13 each have the lead wire 1 between them.
2 and 13 are provided with bent portions 14 and 15 that protrude in the vertical direction with respect to the plane P formed by them. The bent portions 14 and 15 are formed on the casing sides 14a and 15a of the light emitting diode 11.
For the portions of the lead wires 12 and 13 other than 5, that is, the lead wires are inclined obliquely at an angle of about 30 degrees with respect to the plane P, and extend perpendicularly to the plane P at the free end sides 14b and 15b. The lower edges of the free end sides 14b and 15b are located at a predetermined distance l from the upper end of the casing 11a of the light emitting diode 11.

Note that the bent portions 14 and 15 can be formed in one operation by press forming in a direction perpendicular to the plane P.

Here, the bent portion 14 protrudes to the left in FIG. 1A, that is, to the rear in FIG. 1B, and the bent portion 15 projects to the right in FIG. 1A, that is, the first In Figure B, it protrudes forward.

The light emitting diode 11 according to the present invention is constructed as described above, and when mounting the light emitting diode 11 on the printed circuit board 16, first connect the lead wires 12 and 13 of the light emitting diode 11 to the printed circuit board 16.
6, and emit light until the lower edges of the free end sides 14b, 15b of the bent parts 14, 15 provided on the lead wires 12, 13 come into contact with the upper surface of the printed circuit board 16. If the diode 11 is inserted, the light emitting diode 1
1 can be positioned on the printed circuit board 16 at a predetermined distance l from the top surface of the printed circuit board 16 without using a special jig.

At this time, the light emitting diode 11 connects to the lead wire 1
The bent portion 14 of the lead wire 13 is in contact with the upper surface of the printed circuit board 16 at the lower edge of its free end side 14b, and the bent portion 15 of the lead wire 13 is in contact with the lower edge of its free end side 14b.
Since the light emitting diode 11 is in contact with the upper surface of the printed circuit board 16 at 5b, the light emitting diode 11 does not tilt left and right in FIG. 1A, that is, it does not tilt back and forth in FIG. 1B.

From this state, for example, by cutting the portions of the lead wires 12 and 13 that protrude below the printed circuit board 16 and further bending them as shown by the chain lines in FIG. can be fixed. Thereafter, the bent portions of the lead wires 12 and 13 of the light emitting diode 11 are soldered to the lower surface of the printed circuit board 16, thereby completing the mounting of the light emitting diode 11 on the printed circuit board 16.

Incidentally, the above-described mounting of the light emitting diodes 11 on the printed circuit board 16 can be carried out automatically by sequentially inserting the light emitting diodes onto the printed circuit board using a radial component inserter and automatically soldering them using a dip bath. is possible.

In the case of automatic mounting, generally, as shown in FIG.
So-called taping is performed in advance by placing the mounting paper 17 at a constant interval d and fixing it with tape 18 from above.In this case, after fixing with tape 18, and the lead wires 12, 1 of each light emitting diode 11 by press-molding in the vertical direction with respect to the tape 18.
By automatically feeding the taped light emitting diode 11 using the automatic feed hole 19, the lead wires 12, 1 of each light emitting diode can be formed in sequence.
Bent portions 14 and 15 can be formed at 3.

In the above embodiments, a light emitting diode having two lead wires has been described, but it can also be used with other semiconductor devices such as photodiodes, electric circuit elements such as capacitors, and resistors, as well as light emitting diodes with three or more leads extending in parallel. The present invention can also be applied to dichroic light emitting diodes, transistors, etc. that have wires.

As shown in FIG. 3, for example, an electric circuit element 2
1 is three lead wires 2 extending parallel to one side.
2, 23, 24, the lead wire 2
2, 23, 24 (lead wire 22,
23 and 24 are not aligned with the casing of the electric circuit element 21, as shown in FIG. A bent portion 22 in which the lead wires 22 and 24 on both sides protrude vertically rearward.
a, 24a, and the center lead wire 23 may be configured to have a bent portion 23a projecting vertically forward, and as shown in FIG. 22 has a bent portion 22a that projects vertically backward, and the lead wire 24 on the other side has a bent portion 24a that projects vertically forward, and the central lead wire 23 does not have such a bent portion. It may be configured to remain straight. The electric circuit element 21 configured in this way is
As in the case of the light emitting diode 11 of the embodiment shown in FIG. 1, it can be mounted on the printed circuit board 16.

Furthermore, in the case of an electric circuit element 31 having four lead wires extending parallel to one side, for example, a fourth
As shown in Figure A, bent portions 32a, 35a where the two lead wires 32, 35 located on both sides protrude in opposite directions with respect to the two central lead wires 33, 34.
Even if it is formed to have
As shown in the figure, the two lead wires 32 and 33 on one side
may be formed to have bent portions 32a, 33a protruding in the opposite direction to the two lead wires 34, 35 on the other side, and furthermore, as shown in FIG. It may be formed so that every other one has bent parts 32a to 35a protruding in mutually opposite directions, and in any case, the first
The same effect as the embodiment shown in the figure can be obtained.

[Effect of idea]

As described above, according to the present invention, in an electric circuit element having at least two lead wires extending in parallel toward one side, at least two The lead wire is provided with a bent portion projecting perpendicularly to the plane and in mutually opposite directions at a predetermined distance from the casing of the electric circuit element, preferably forming the bent portion on the free end side of the lead wire. More preferably, each electrical circuit element has a plurality of electrical circuit elements taped together for automatic mounting such that the lead wire portion extends perpendicularly to the lead wire other than the bent portion. Since the lead wire is configured to have a bent portion, the bent portion provided at a predetermined distance from the casing of the lead wire of the electric circuit element allows the bent portion to be formed when the electric circuit element is inserted into the printed circuit board. Since the electric circuit element is inserted until the free end side touches the top surface of the printed circuit board, it is possible to position the electric circuit element at a predetermined distance on the printed circuit board without using a special jig, and the bending part can be freely inserted. If the end side extends in a direction perpendicular to the lead wire portion other than the bent portion,
This free end comes into contact with the top surface of the printed circuit board, which prevents the electric circuit element from tilting in the front-back direction, making it possible to obtain an electric circuit element suitable for automatic mounting such as automatic insertion and automatic soldering. .

Furthermore, since the bent portion of the lead wire according to the present invention can be formed very easily by press molding in the front and back direction of the electric circuit element, the molding cost of the bent portion can be reduced, and moreover, it is possible to reduce the molding cost of the bent portion, and moreover, it is possible to form a large number of electric circuits during automatic mounting. When taping elements, the lead wires of the electric circuit elements can be easily changed by simply adding a pressing process in the taping process to press the lead wires of each electric circuit element in a direction perpendicular to the taping surface. Since it is possible to provide a bent portion in the structure, the bent portion can be formed very easily. Therefore, since the assembly and soldering of the electric circuit elements to the printed circuit board are performed in one automatic mounting process, there is no need for masking and only one soldering is required, which can reduce the number of man-hours and reduce the electrical The occurrence of misassembled circuit elements can be completely eliminated.

Thus, according to the present invention, when an electric circuit element is inserted into a printed circuit board, it is possible to position it without using a special jig, and it is possible to prevent the electric circuit element from being tilted with respect to the printed circuit board. do not have,
It is possible to provide an extremely excellent electric circuit element that is suitable for automatic mounting such as automatic insertion and automatic soldering, and that does not cause mis-assembly of electric circuit elements.

[Brief explanation of the drawing]

FIG. 1 shows an example in which the present invention is applied to a light emitting diode having two lead wires.
is a side view, B is a front view, Fig. 2 is a schematic diagram showing the state in which the light emitting diode shown in Fig. 1 is taped for automatic mounting, and Figs. A schematic perspective view showing an example when applied to an electric circuit element having
1A and 1B are schematic perspective views showing various embodiments in which the present invention is applied to an electric circuit element having four lead wires. FIG. 5 is a front view showing a capacitor having lead wires of a conventional shape. 11... Light emitting diode; 11a... Casing; 12, 13... Lead wire; 14, 15... Bent part of lead wire; 14a, 15a... Casing side of lead wire; 14b, 15b... Free lead wire End side; 16...Printed circuit board; 16a, 16b
... Through hole; 17 ... Mount; 18 ... Tape; 19 ... Automatic feeding hole; 21, 31 ... Electric circuit element; 22, 23, 24, 32, 33, 3
4, 35... Lead wire; 22a, 23a, 24
a, 32a, 33a, 34a, 35a...Bending portions of lead wires.

Claims (1)

[Claims for Utility Model Registration] (1) In an electric circuit element having at least two lead wires extending in parallel toward one side, at least two A lead wire for an electric circuit element, characterized in that the lead wire is provided with a bent portion projecting perpendicular to the plane and in mutually opposite directions at a predetermined distance from a casing of the electric circuit element. (2) On the free end side of the lead wire, the lead wire portion forming the bent portion extends in a direction perpendicular to the lead wire other than the bent portion;
A lead wire for an electric circuit element according to claim 1 of the utility model registration claim. (3) With a large number of the electric circuit elements taped together for automatic mounting, each electric circuit element is
A lead wire for an electric circuit element according to claim 1 or 2, characterized in that the lead wire has a bent portion.