SU1204337A1 - Electric soldering iron - Google Patents

Description

1204337

FIELD: engineering.

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assembling production of electronic equipment, in particular, to tools for performing electromechanical joints by soldering with solder, and can be used in electrical and radio engineering, instrumentation and electronics.

The purpose of the invention is to improve the operational and technical characteristics of the electric heater for direct heating by making the heating element in the form of a package of resistive plates connected in series with thermoelectrically insulating gaskets between them.

FIG. I shows an electric direct heating heater, a general view of FIG. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a view of FIG. one; in fig. 6 is a section d-d in FIG. one; in fig. 7 - average location of the flat part; in fig. 8 - side flat detail; in fig. 9 - side flat detail.

Electric pa lnik (Fig. 1) consists of a manual part 1, flexible wiring wires 2 and a power source (not shown).

The hand piece is made of a body-handle 3, a heating element 4 in the form of a tip with a zone 5 for metering solder and making the connection by soldering.

The heating element is composed of flat parts 9–11 assembled in a package by rivets 6–8 (Figs. 7, 8, 9) and thermoelectric insulating strips 12–15. Flat parts are made of sheet resistive material of equal thickness 16 and width 17 with holes 18 and 19 at the ends for passing electrically conductive rivets 6 and 7, holes of mechanical fastening 20 in the package with rivets 8 and holes 21 and 22 of electrical connection of flexible electrical wiring .

Medium in position in the package, the flat part 10 has a zone 5 unprotected by heat-resistant electrically insulating gaskets 12–15 from copper-sized sections 23–25 of the surface of a resistive sheet material, i.e. the sections are made, for example, by sputtering copper layer of a certain size.

The heating element from the package of flat parts and thermoelectroisol -

The gaskets are connected by rivets of conductive materials so that the rivets simultaneously touch the metal of two joined flat parts in their electromechanical joints (Fig. 2, 3 or the material of only one flat part in places of purely mechanical connection (Fig. 41. The device works as follows

in a way.

The passage of electrical current from the power source through flexible electrical wiring and electrically connected through rivets flat

Details of the sheet resistive material in the package of the heating element-tip provides a certain heat dissipation. In this case, the contact method occurs

heat transfer of the heat released to the copper layer 26 of sections 23-25 of zone 5 and through thermal insulating strips by convection into the environment.

Since the gaskets protect the flat parts 9 and II from direct contact with the environment, and the flat parts 9 and 11, in turn, protect the middle flat

component 10, the convection exchange takes place only with the surfaces of thermoelectric insulating gaskets relating only to these parts, and thus a certain stabilization of the thermal mode of contact heat transfer to the copper layer 26 of zone 5 is ensured.

By contacting the copper sections 23-25 of zone 5 of the middle part 10 of the heating element 4, first with the flux and hard solder, the surface is cleaned from the oxide film and the solid phase is transformed into liquid, then by repeated contact after transferring the liquid dose of copper to the copper. the solder in the location of the connected elements now with the surfaces of the connection, for example, the contact surface of the radio element and the surface of the prepared end of the conductive wire ntazhnogo wires, heating is performed locations surfaces compound to consist 1204337

nor wettability with a dose of liquid solder introduced by copper sections.

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Claims (1)

A direct-heating ELECTRIC soldering iron containing a heating element and a tip with a solder dosing surface, characterized in that, in order to improve operational characteristics, the heating element is made in the form of a package consisting of at least three resistive plates connected electrically in series with thermoelectric insulating gaskets, located between the plates and outside them, and a tip with a surface for dispensing solder is located on the middle plate. Thebes. 1>