JPH05206628A - Soldering auxiliary tool - Google Patents

Abstract

PURPOSE:To readily carry out soldering operations manually by a method wherein an engaging part on a printed board and a lead wire holder are provided. CONSTITUTION:A pair of arms 2 are pinched from both sides and bent inside, and then a lead wire 7 is interposed between a pair of lead wire holders 3 from both sides. Next, a pair of engaging parts 4 is inserted vertically into an engaging hole 9 such as a through hole or the like of a part to be engaged on a printed board 8 to engage it. A tip of a core wire 7a of a lead wire is accurately positioned on a land 10a which is a part to be soldered for a wiring pattern 10 on the printed board 8, and the tip thereof is fixed in such the state. Next, an operator grasps only a soldering wire by his one hand and a soldering iron by his another hand to freely move his both hands, while he accurately melts the soldering wire at a tip of the core wire 7a and a soldering lump 11 is accurately formed on the land 10a to accurately and readily solder the tip of the core wire 7a on the land 10a. Thus, soldering operations can be carried out manually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary soldering tool used for soldering a lead wire to a wiring pattern of a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, when a lead wire is manually soldered to a wiring pattern of a printed circuit board, for example, one hand such as the left hand is used to hold the lead wire and the solder wire at the same time so that the lead wire and the solder wire are overlapped with each other. It is common to hold the soldering iron with the other hand, press the lead wire against the wiring pattern, and melt the solder wire with the soldering iron for soldering.

[0003]

However, this manual soldering work is very complicated and requires skill. And, in many cases, the solder position of the lead wire with respect to the wiring pattern is displaced or the lead wire floats from the wiring pattern, so that a sufficient alloy layer is not formed between the lead wire and the wiring pattern. There was a problem that defects were likely to occur. If a sufficient alloy layer is not formed and the lead wire is lifted from the wiring pattern, it is likely to cause noise in the electronic circuit and the lead wire is easily dropped from the wiring pattern.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an auxiliary soldering tool that can easily perform a manual soldering operation.

[0005]

An auxiliary tool for soldering according to the present invention for achieving the above object comprises an engaging portion for a printed circuit board and a lead wire holding portion.

[0006]

With the auxiliary soldering tool of the present invention configured as described above, the lead wire is printed by holding the lead wire with the lead wire holding portion and locking the locking portion with the printed circuit board. It can be accurately positioned and fixed to the wiring pattern of the board.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the auxiliary soldering tool of the present invention will be described below with reference to the drawings.

First, as shown in FIGS. 5A to 5C, the auxiliary soldering tool 1 is formed into a substantially tweezers shape by a member having a proper elasticity such as a metal plate or a synthetic resin. , A pair of lead wire holding portions 3 curved in a semi-circular shape facing each other are integrally formed horizontally at the lower ends of a pair of vertical arms 2 bent in a U shape,
A pair of engaging portions 4 that are curved in a substantially semicircular shape and are opposed to each other are integrally formed vertically in the lower part of the center of the pair of lead wire holding portions 3. A pair of cuts 5 are formed on both sides of the connecting portion of the pair of locking portions 4 to the pair of lead wire holding portions 3.

Next, how to use the auxiliary soldering tool 1 will be described with reference to FIGS.

First, the pair of arms 2 is pinched with fingers from both sides so as to be bent inwardly against elasticity, so that the lead wire 7 is sandwiched between the pair of lead wire holding portions 3 against elasticity. To do.

Next, a pair of locking portions 4 are vertically inserted into the locking hole 9 such as a through hole which is a locked portion of the printed circuit board 8 against elasticity and locked, and the lead wire 7 is formed. Core wire 7a
The tip of can be fixed in a state of being accurately positioned on the land 10a which is the portion to be soldered of the wiring pattern 10 of the printed circuit board 8.

Next, the operator can freely operate both hands by grasping only the solder wire with one hand such as the left hand and the soldering iron (neither is shown) with the other hand such as the right hand. while doing,
The solder wire is accurately melted at the tip of the core wire 7a, and the land 10
The solder wire 11 is accurately formed on the core wire 7a.
The tip of a can be soldered accurately and easily onto the land 10a. After the soldering, the pair of locking portions 4 of the auxiliary soldering tool 1 are pulled out upward from the locking holes 9.

As described above, when the auxiliary soldering tool 1 is used for manual soldering, the lead wire 7
Since the tip portion of the core wire 7a can be accurately positioned and fixed on the land 10a in advance, the operator does not need to hold the lead wire 7 by hand, only the solder wire and the soldering iron. With both hands, you can operate both hands freely. Therefore, the soldering work can be accurately and easily performed without requiring any skill. And the core wire 7a for the land 10a
Since there is no displacement of the soldering position of the tip of the core wire 7 and the tip of the core wire 7a can be reliably pressed against the land 10a for soldering, as shown in FIG. The alloy layer 12 can be surely formed between the land 10a and the solder layer, and no soldering failure occurs in which the tip of the core wire 7a floats from the land 10a. In the figure, 13 is a flux.

By the elastic repulsive force of the pair of arms 2 of the auxiliary soldering tool 1 and each pair of the cuts 5, sufficient elastic crimping force of the pair of locking portions 4 with respect to the inner surface of the locking hole 9 is exerted. Therefore, the auxiliary soldering tool 1 can be securely locked to the printed circuit board 8 and the lead wire 7 can be accurately fixed to the printed circuit board 8.

At this time, as shown in FIG. 5D, in order to increase the friction locking force of the pair of locking portions 4 with respect to the inner surface of the locking hole 9, the outer peripheral surfaces of the pair of locking portions 9 are increased. Further, it is desirable to adhere or apply a high friction sheet 14 or a high friction member 14 such as pointed particles.

The above is a description of one embodiment of the present invention.
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention. For example, the lead wire holding portion 3 and the locking portion 4 may have any shape, and the locking hole 9 which is the locked portion of the printed circuit board does not have to be a through hole. It may be any shape of the substrate.

[0017]

The auxiliary soldering tool of the present invention constructed as described above has the following effects.

Since the lead wire is held by the lead wire holding portion and the locking portion is locked to the printed circuit board, the lead wire can be accurately positioned and fixed with respect to the wiring pattern of the printed circuit board. There is no need for the operator to hold the lead wire by hand when performing soldering work.
Therefore, since the worker can carry out the soldering work while grasping only the solder wire and the soldering iron with both hands and freely operating both hands, no skill is required and the manual soldering work can be easily performed. .

Since the lead wire can be accurately positioned and fixed with respect to the wiring pattern of the printed circuit board and soldered, the solder position of the lead wire with respect to the wiring pattern is displaced or the lead wire floats from the wiring pattern. The soldering is performed in such a state that no soldering failure such as the inability to form an alloy layer occurs, and accurate and reliable soldering can always be performed. Therefore, it is possible to prevent noise generation in the electronic circuit due to defective solder.

The auxiliary tool for soldering has a simple structure, is easy to manufacture, and is low in cost.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating how to use an auxiliary soldering tool according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a plan view taken along the line BB of FIG.

4A is a cross-sectional view taken along the line CC of FIG.
4B is a cross-sectional view taken along the line D-D of FIG. 2, and FIG. 4C is an enlarged cross-sectional view of the solder joint portion.

FIG. 5 (A) is a perspective view of an auxiliary tool for soldering,
5B is a front view, FIG. 5C is a bottom view, and FIG. 5D is a bottom view of a main part showing a modified example.

[Explanation of symbols]

 1 soldering auxiliary tool 3 lead wire holding part 4 locking part 7 lead wire 8 printed circuit board 9 locking hole (locked part) 10 wiring pattern

Claims (1)

[Claims] 1. A soldering auxiliary tool including a printed circuit board engaging portion and a lead wire holding portion.