JPS595493Y2 - soldering iron - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a soldering iron.

Conventionally, when soldering the lead terminals of various elements to a printed circuit board, for example, flux (
paste) is scattered around by the hot soldering iron, and as a result, the flux adheres to the surrounding printed contacts, adversely affecting the contacts, and the flux scattering also spreads the solder onto unnecessary printed surfaces. There were cases where the printed wiring could become short-circuited.

An object of the present invention is to provide a soldering iron that prevents scattering of flux during soldering and has good soldering workability without adversely affecting the contact portions or shorting printed wiring.

Embodiments of the present invention will be described below based on the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a soldering iron body having a grip portion 2, and a tapered iron stem 3 is inserted into the tip of this body 1.

A conductive wire 4 connected to the iron stem 3 is inserted through a hollow portion 5 of the main body and drawn out to the outside.

As shown in FIGS. 2 and 3, a cylindrical body 6 having high heat resistance and made of, for example, tempered glass is attached to the tip of the main body 1 so as to surround the iron stem 3.

That is, a socket 7 is inserted into the inner peripheral surface of the upper end of the cylindrical body 6, and a through hole 7a is formed in the axial center of the socket.

A female screw portion 7b is formed on the inner periphery of the upper end of the through hole 7a, and a receiving portion 7C is formed on the lower end.

The female screw 7b of the socket 7 is screwed into the male screw of the main body 1, and the flange portion 3a of the iron stem 3 is engaged with the receiving portion 7C.

The tip of the cylindrical body 6 is slightly longer than the tip of the trowel stem 3, so that the true tip is covered by the edge of the opening at the tip of the cylindrical body.

In the illustrated example, a partition plate 8 is provided inside the opening at the tip of the cylinder body 6.
, and a solder amount adjustment space 9 is formed at the tip.

A hole 8a is provided in the center of the partition plate 8, and the tip of the iron bar 3 passes through this hole.

A solder insertion hole 10 is provided at the edge of the opening at the tip of the cylinder 6, into which solder 11 can be inserted from the outside into the space 9.

In FIG. 2, 12 is a printed circuit board, and 13 is an element in which a lead terminal 13a is inserted into a hole 12a of the printed circuit board 12.

Next, to explain how to use the soldering iron, as shown in Fig. 2, with the soldering iron 3 perpendicular to the printed circuit board 12, and while positioning the soldering iron at the soldering point, print the tip of the cylinder 6. The lead terminal 13H is brought into contact with the substrate 12, and the cylindrical body 6 covers the tip of the lead terminal 13H.

By inserting solder 11 such as thread solder through the solder insertion hole 10 and melting it with the iron shank 3, soldering can be performed between the solder surface of the printed circuit board and the lead terminal 13a of the element 13.

During soldering, the solder 11 is blocked by the fluff that scatters when it melts or by the cylinder 6 surrounding the iron shank 3, so that it does not scatter or adhere to other printed surfaces.

Further, the spread of the molten solder is regulated within the area surrounded by the cylinder 6, and the amount of solder is further regulated by the partition plate 8. In other words, the amount of solder filled in the space 9 is regulated. Excessive solder and solder defects can be avoided.

Note that if the cylinder 6 is made of, for example, a transparent glass member, the soldering process using the iron stem 3 can be visually observed from outside the cylinder 6, thereby improving work efficiency.

As described above, according to the present invention, the cylindrical body surrounding the iron stem is provided, and the solder insertion hole is formed at the edge of the tip opening of the cylindrical body, thereby preventing flux from scattering during soldering. This prevents adverse effects on the contacts and short circuits in printed wiring, etc., and since the tip of the cylinder is longer than the true tip of the iron, the molten solder does not spread wider than the surface surrounded by the cylinder. Short circuits with adjacent printed wiring can be prevented, and soldering work can be performed effectively.

[Brief explanation of the drawing]

Figure 1 is a front view of the main parts of the soldering iron, Figure 2 is Figure 1 II-
FIG. 3 is a sectional view taken along line III--III in FIG. 2. 1... Soldering iron body, 3... Iron stem,
6...Cylinder, 7...Socket, 8...
...Partition plate, 9...Solder amount adjustment space, 10
...Solder insertion hole.

Claims (1)

[Scope of utility model registration request] 1. A iron stem attached to the tip of the soldering iron body, and a heat-resistant cylindrical body that is attached to the soldering iron body, surrounds the iron stem, and is longer in the axial direction than the true tip of the iron. and a solder insertion hole provided at the edge of the opening at the tip of the cylindrical body. 2. Utility Model Registration The soldering iron according to claim 1, characterized in that a partition plate is provided in the opening at the tip of the cylindrical body to form a solder amount adjustment space.