JPH0679179U - Printed circuit board through-hole processing pin and insertion kit - Google Patents

Abstract

(57) [Abstract] [Purpose] Conducting conductive processing of through holes on printed circuit boards
It should be possible to perform safely, easily and quickly without using harmful plating chemicals. [Structure] A through-hole processing pin 1 made by filling a solder 4 inside a pipe 3 made of a copper material and provided with slits 2, 2, ... . A knock-type pin insertion tool in which the through-hole processing pin 1 housed in the shaft portion 6a is gradually pushed out by pushing the cap 6b. The impactor 11 is slidably fitted in the body portion 8a of the shaft portion 8. The impactor 11 is pushed out by the restoring elasticity of the coil spring 9.
The coil spring 9 is compressed when the shaft portion 8 is pushed. When the shaft 8 is pushed to some extent, the projecting rod 10 is disengaged, and the impactor 11 strikes the punch holder 12 via the projecting rod 10 to provide an automatic punch. In addition, a kit for inserting pins for through-hole processing on a printed circuit board that includes these as a set is included.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a through hole processing pin for a printed circuit board and a kit for inserting the same.

[0002]

[Prior art]

 Conventionally, a plating method has been used to electrically conductive a through hole of a desired land on a printed circuit board. However, when the plating method is used, there is a problem that a plating chemical that is harmful to the human body must be used and that it takes too much time and labor.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above-mentioned points, and a printed circuit board capable of performing conductive processing of through holes safely, easily and quickly without using harmful plating chemicals. It is intended to provide a through hole processing pin and a kit for inserting the same.

[0004]

[Means for Solving the Problems]

 Thus, as a through-hole processing pin for achieving the above object, a pipe made of a copper material, having a required length and provided with slits at regular intervals slightly longer than the thickness of the printed circuit board. Through-hole processing pins made by filling solder inside are used.

In using the through-hole processing pin, the work can be efficiently performed by using a knock type pin insertion tool having a mechanism similar to that of the knock type sharp pencil.

Furthermore, it is convenient to use an auto punch when the end of the through hole processing pin protruding from the hole is hit after the through hole processing pin is inserted into the hole of the printed board. In the auto punch, when the head is pressed and the shaft is pushed down, the coil spring inside the shaft is compressed, and when it is pushed down further, the projecting rod is released and the impactor is pushed out by the restoring force of the coil spring. Along with this, the punch holder is suddenly pushed out through the projecting rod, and the punch hits the end of the through-hole machining pin. According to the auto punch, only the end portion of the through-hole processing pin can be locally crushed, so that the other parts of the printed circuit board are not damaged and can be performed with one touch once. .

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of a through-hole processing pin, FIG. 2 is an enlarged sectional view of a portion A in FIG. 1, FIGS. 3 to 6 are explanatory views of a method of using the through-hole processing pin, and FIG. 7 is B in FIG. 8 is a front view of the knock type pin insertion tool, FIG. 9 is a front view of the state where the cap is removed and the through hole processing pin is inserted, and FIGS. 10 and 11 are knock type pin insertion tools. Fig. 12 is a front view of the auto punch, Fig. 13 is a vertical cross-sectional view of the auto punch, Fig. 14 is an exploded perspective view of the auto punch, and Fig. 15 is an explanatory view of the use of the auto punch. .

In the figure, 1 is a through-hole processing pin, which is made of a copper material, has a required length, and has slits 2, 2, ... The inside of the provided pipe 3 is filled with solder 4.

Further, in this embodiment, the pipe 3 of the through-hole processing pin 1 is a high-purity copper material plated with tin and has a wall thickness of 35 μm. Moreover, the total length is 64.2 mm, and 25 slits are provided at intervals of 1.88 mm. The outer diameter is 1.0 mm or 1.2 mm. Incidentally, the slit completely cuts the copper material and reaches the solder.

However, the method of using the through hole processing pin 1 is as shown in FIGS. 3 to 6, and first, as shown in FIG. 3, the through hole processing pin 1 is formed in the hole P ′ of the printed circuit board P. After inserting, tilt it and fold it at the slit 2.

Next, as shown in FIG. 4, the end of the through hole processing pin 1 projecting from the hole P ′ of the pipe 3 is tapped. As a result, the through-hole processing pin 1 bulges outward by the amount of being crushed, and the outer peripheral surface is pressed against the inner wall of the hole P '.

Next, as shown in FIG. 5, solder H 2 is placed on both sides of the pipe 3 using a soldering iron (not shown) to melt the solder 4 in the pipe 3. After that, the solder sucker (not shown) is used to suck all the solder at once.

As a result, as shown in FIG. 6, the inside of the pipe 3 of the through-hole processing pin 1, which is pressure-bonded to the inner wall of the hole P ′ of the substrate, becomes empty, and the processing is completed. Then, even if there is a gap between the pipe 3 and the land P ″ of the printed circuit board P, the melted solder 4 enters the gap and is cured as shown in FIG. 7, and the electrical characteristics are impaired. In addition, 5 in the other figures is a metal pedestal.

Reference numeral 6 denotes a knock-type pin insertion tool which is convenient to use when inserting the through-hole processing pin 1 into the hole P ′ of the printed circuit board P. The mechanism of the knock type pin insertion tool 6 is the same as that of the knock type mechanical pencil, and when the head of the cap 6b is pushed, the through hole processing pin 1 is gradually pushed out.

When using, the head of the cap 7 is pushed to bring out the through hole processing pin 1 to a required length, and the shaft portion 6a is first held to pass through the hole P'of the printed circuit board P as shown in FIG. The hole processing pin 1 may be inserted and then tilted left or right as shown in FIG. As a result, the through hole processing pin 1 is broken at the slit 2. Therefore, the through-hole processing pin 1 can be inserted into the hole of the printed circuit board in an efficient manner.

Numeral 7 is an auto-punch which is convenient to use for hitting the cut end of the through-hole processing pin 1. When the head portion of the auto punch 7 is pressed to push down the shaft portion 8, the coil spring 9 in the shaft portion 8 is compressed, and when the auto punch 7 is pushed further down, the projecting rod 10 is released and its tip is the lower surface of the impactor 11. It goes into the recess 11a at the center. At this time, the impactor 11 is pushed out by the restoring force of the coil spring 9. Along with this, the punch holder 12 is suddenly pushed out through the projecting rod 10, and the punch 13 strikes the portion of the through-hole machining pin 1 protruding from the hole P '. The shaft portion 8 is composed of a body portion 8a, a head portion 8b, and a tip portion 8c, which are integrated by being screwed into each other. Moreover, 14 and 15 are coil springs.

However, as shown in FIG. 15, the auto punch 7 automatically pushes the punch 13 against the end of the through-hole machining pin 1 and pushes down the head portion 8b of the shaft portion 8 to automatically push the through hole. This is for hitting the end of the processing pin 1 so that the work can be performed efficiently. Moreover, since only the end of the through-hole processing pin can be hit, there is no risk of damaging other parts of the printed circuit board.

[0018]

[Effect of device]

 By using the through-hole processing pin according to the present invention, conductive processing of the through-hole can be performed safely, simply and quickly without using harmful plating chemicals.

Further, when inserting the through-hole processing pin into the hole of the substrate, a knock-type pin insertion tool can be used to perform the work efficiently. Furthermore, if the through hole processing pin is hit with an auto punch, the work can be performed efficiently, and only the end of the through hole processing pin can be hit, so that the printed circuit board There is no risk of damaging other parts.

[Brief description of drawings]

FIG. 1 is a front view of a through-hole processing pin.

FIG. 2 is an enlarged sectional view of a portion A in FIG.

FIG. 3 is a cross-sectional view showing a state in which a through hole processing pin is inserted into a hole of a substrate.

FIG. 4 is a cross-sectional view of a state where the end portion of the through-hole processing pin is hit.

FIG. 5 is a cross-sectional view showing a state in which melted solder is placed on both sides of a through hole processing pin.

FIG. 6 is a cross-sectional view showing a state in which solder is absorbed.

FIG. 7 is an enlarged cross-sectional view of portion B in FIG.

FIG. 8 is a front view of a knock type pin insertion tool.

FIG. 9 is a front view of the knock-type pin insertion tool in a state where the cap is removed and the through-hole processing pin is inserted.

FIG. 10 is a front view of the knock-type pin insertion tool in which the through-hole processing pin is inserted into the hole of the substrate.

FIG. 11 is a front view of the knock-type pin insertion tool with the through-hole processing pin folded.

FIG. 12 is a front view of an auto punch.

FIG. 13 is a central longitudinal sectional view of the auto punch.

FIG. 14 is an exploded perspective view of an auto punch.

FIG. 15 is a front view of the auto punch in a state where a through-hole processing pin is hit.

[Explanation of symbols]

 1 Through Hole Machining Pin 2 Slit 3 Pipe 4 Solder 5 Metal Base 6 Knock Pin Insert Tool 6a Knock Pin Insert Shaft 6b Knock Pin Insert Cap 7 Auto Punch 8 Auto Punch Shaft 9 Coil spring 10 Projecting rod 11 Impactor 11a Impactor recess 12 Punch holder 13 Punch

Claims (4)

[Scope of utility model registration request] 1. A through board for a printed circuit board, which is made of a copper material, has a required length, and is filled with solder inside a pipe provided with slits at regular intervals that are slightly longer than the thickness of the printed circuit board. Hole processing pin. 2. A knock-type pin insertion tool according to claim 1, wherein the through-hole processing pin is housed in the shaft portion and is pushed out by pushing the cap. 3. A shaft portion comprising a body portion, a head portion and a tip portion,
An impactor slidably fitted in the body of the shaft and having a recess in the center of the lower surface; a coil spring provided between the impactor and the inner surface of the head of the shaft; Is abutted on the lower surface of the impactor, and the other end side is abutted on the end of the punch holder described later and slidably fitted on the tip of the shaft, and the punch is attached to the tip. A kit for inserting a through hole processing pin of a printed circuit board, which comprises an auto punch including the punch holder, a through hole processing pin according to claim 1, and a knock type pin insertion tool according to claim 2. 4. A kit for inserting a pin for through-hole processing, which comprises the kit according to claim 3 and a pedestal made of metal as a set.