JP2540129Y2 - Soldering jig - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a jig for soldering between a pipe mounting body such as a tank of a heat exchanger and a pipe for cooling water inflow which is mounted on a side surface thereof. More particularly, the present invention relates to a method for preventing solder from falling downward from a gap between joints.

[0002]

2. Description of the Related Art As an example, a pipe 3 for inflow of cooling water as shown in FIG.
The installation was done as follows. A perforated hole 2 is provided on a side surface of an elongated box-shaped pipe mounting body 1 which is open at one end, and a burring portion 10 is formed at an edge of the perforated hole 2 so as to be recessed on the inner surface side. Then, the pipe 3 is fitted into the perforated hole 2. Pipe 3 of this embodiment
Shows an example in which an opening 8 is formed at one end. Then, as shown in the figure, the pipe 3 is fitted into the perforated hole 2 of the pipe mounting body 1, the tip of the rod-shaped solder 4 is looked into the fitting portion, and the solder 4 is melted by the burner 7. Then, while moving the burner 7 and the solder 4 over the entire circumference of the fitting portion, the solder is fixed in a liquid-tight manner.

[0003]

However, in the soldering according to the conventional method as shown in FIG. 6, the molten solder 4 often flows downward from the gap between the drilled hole 2 and the pipe 3 and is brazed. There was a disadvantage that the work required skill. Also, since the brazing operation has to be performed carefully, much work time is required.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a soldering jig for solving the above problems, and the gist is as follows. That is, the soldering jig of the present invention is used when the pipe 3 is fitted into the drilled hole 2 of the pipe mounting body 1 and the solder 4 is supplied to the fitted portion and liquid-tightly joined. is there. The jig main body 5 is detachably abutted on the inner peripheral surface side of the pipe attachment body 1 at the hole edge of the drilled hole 2. Further, the jig body 5 has a solder storage portion 6 which is annularly recessed on the contact surface side of the jig body 5 so as to be aligned with the pipe mounting body 1. At least the solder reservoir 6 is made of a material that is difficult to bond with solder.

[0005]

The jig body 5 is connected to the pipe mounting body 1 as shown in FIG.
It is inserted from the inner surface side, and the solder reservoir 6 and the perforated hole 2 are arranged so as to be aligned. In such a state, the solder 4 is
Then, the solder 4 is melted by the burner 7. Then, the molten solder 4 is captured by the solder reservoir 6 of the jig main body 5 and does not flow downward. Therefore,
Solder is securely held at the fitting portion between the drilled hole 2 of the pipe attachment 1 and the pipe 3, and the two are joined in a liquid-tight manner.
Next, the jig body 5 may be removed.

[0006]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a use state of the first embodiment of the soldering jig, FIG. 2 is a perspective view of a main part of the jig, and FIG. 3 is a plan view of the same. In this embodiment, as shown in FIGS. 2 and 3, the annular jig body 5 is divided into two parts, and each end is attached to a scissor-like or pliers-like holding part 11. The jig main body 5 is made of a material having heat resistance, such as titanium or ceramic, and which is difficult to be joined to solder. Note that only the solder reservoir 6 described later of the jig body 5 may be coated with titanium or ceramic. Next, the inner peripheral surface of the jig body 5 is formed so as to match the outer periphery of the pipe 3, and an annular solder reservoir 6 is formed on one surface thereof. This solder reservoir 6 is shown in FIG.
As shown in the figure, the size is such that the burring portion 10 formed in the drilled hole 2 of the pipe attachment 1 can be sufficiently fitted. The jig body 5 is opened and closed by opening and closing the pair of gripping portions 9 around the pin 12.

In the soldering jig thus constructed, the jig main body 5 is inserted from the open end of the pipe mounting body 1 in an open state, and the jig body 5 is fastened to the fitting portion between the pipe 3 and the drilled hole 2. The pair of grips 9 are pressed. Then, the outer periphery of the burring portion 10 and the outer periphery of the pipe 3 are fitted. In such a state, the solder 4 is looked into the fitting portion between the pipe 3 and the pipe mounting body 1, and the tip of the solder 4 is melted by the burner 7. Then, when the molten solder 4 is poured between the drilled hole 2 and the pipe 3, it is held in the solder reservoir 6. By performing such an operation over the entire circumference of the pipe 3, it is possible to reliably and quickly solder the fitting portion between the pipe 3 and the pipe mounting body 1. Next, the holding portion 11 is opened, and the jig body 5 may be extracted.

Next, FIG. 4 shows a drain boss soldering jig to be attached to the lower tank of the heat exchanger. That is, in this embodiment, one end of the pipe 3 as the drain boss is fitted into the perforated hole 2 of the pipe attachment body 1 as the lower tank, and the fitting portion is soldered. The jig main body 5 of this embodiment is made of a flat circular ceramic or titanium material, and one end thereof is fixed to one holding portion 11. In the plane of the jig main body 5, a dish-shaped recessed part matching the perforation hole 2 is formed. The peripheral edge of the recess becomes the annular solder reservoir 6. The jig thus configured holds both ends in the axial direction of the pipe 3, supplies the solder 4 to the fitting portion between the pipe 3 and the perforated hole 2, and melts it by the burner 7. Then, the molten solder 4 is held in the solder reservoir 6, and the pipe 3 and the pipe mounting body 1 are joined in a liquid-tight manner. Next, the grip portion 9 is released, and the tip portion may be pulled out of the pipe fitting 1.

Next, FIG. 5 shows another embodiment of the jig of the present invention. This embodiment is an embodiment in which a pipe 3 serving as a water supply port is soldered to an upper end of a pipe mounting body 1 which is a tank for a heat exchanger. It is. The upper end surface of the jig body 5 of this embodiment is formed along the curved surface of the pipe mounting body 1 and has an annular solder reservoir at a position matching the burring portion of the drilled hole 2 of the pipe mounting body 1. 6 are formed. The solder reservoir 6 is large enough to insert the burring portion and the lower end fitting portion of the pipe 3. A support 13 is fixed to the lower surface of the jig body 5. The jig formed in this manner is inserted from below the pipe mounting body 1, and
The burring portion of the perforated hole 2 and the solder reservoir 6 are aligned. The burring portion and the lower end opening of the pipe 3 are inserted into the solder reservoir 6. Next, the pressing plate 14 is pressed against the upper end of the pipe 3 to hold the pipe 3. The pressing plate 14 has its arm 15 guided by a supporting cylinder 16 so as to be vertically movable and rotatable about its axis.
Fixed to 13. In this state, add solder material to pipe 3
And the pipe fitting 1 is supplied to the fitting part, and the solder holding part 6 holds it. Thereby, the drill hole 2 and the pipe 3
Can be reliably performed. Next, the pipe plate 1 and the pipe 3 may be pulled up from the jig main body 5 by pulling up and rotating the pressing plate.

[0010]

[Effect of the Invention] The soldering jig of the present invention is a jig body 5
Since the solder reservoir 6 is formed on the contact surface side of the solder, the solder 4 supplied to the fitting portion of the pipe 3 and the pipe attachment 1 is held by the solder reservoir 6, and the solder having high liquid tightness is provided. Can provide you with In addition, since at least the solder reservoir 6 is made of a material that is difficult to join with the solder, the jig can be easily removed after soldering, so that a soldering jig with good workability can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a use state of a jig according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the jig of the embodiment.

FIG. 3 is a plan view of the jig.

FIG. 4 is an explanatory view showing a use state of the jig of the second embodiment of the present invention.

FIG. 5 is a sectional view showing a use state of the jig according to the third embodiment of the present invention.

FIG. 6 is an explanatory view showing a conventional soldering method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe attachment body 2 Drilling hole 3 Pipe 4 Solder 5 Jig main body 6 Solder storage part 7 Burner 8 Opening part 9 Holding part 10 Burring processing part 11 Holding part 12 Pin 13 Support body 14 Press plate 15 Arm 16 Support cylinder

Claims (1)

(57) [Scope of request for utility model registration] 1. A pipe (3) is inserted into a drilled hole (2) of a pipe attachment body (1), and is used when a solder (4) is supplied to the inserted portion to be joined in a liquid-tight manner. In the soldering jig, a jig main body (5) detachably abutting against a hole edge of the perforation hole (2) from an inner surface side of the mounting body (1); An annular recessed solder reservoir (6) aligned with the perforated hole (2) on the contact surface side;
A soldering jig, wherein at least the solder reservoir (6) is made of a material that is difficult to join with solder.