JPS5814044Y2 - electric soldering iron - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric soldering iron with compatible soldering iron tip units.

Conventional electric soldering irons have incompatible soldering tip units installed at the tip of the grip, and various electric soldering irons are used with the grip replaced as needed.

Therefore, in order to improve this problem, the applicant has developed a soldering iron having the structure shown in FIG.

That is, in the figure, 1 is the grip, 2 is the connector, 3 is the heat sink, 4 is the heat sink, and 5 is the heat sink 4 and the heat sink 3.
6 is the iron tip, 7 is the heater, 8 is the heater cover, 9 is the cover nut, and this cover nut 9
is screwed onto the heat dissipation plate 4, and the connecting portion is fixed to the heat dissipation plate 4.

10 is a cord, 11 is a contact pin, and 12 is a stopper.

The grip 1 is provided with a stepped portion at the connection part with the heat dissipation nut 3, and a male thread 13 is provided protrudingly, and the heat dissipation nut 3 is provided with a recessed female thread 1.
4 and are screwed together.

In order to maintain a space 15 between the heat sink nut 3 and the heat sink plate 4, a plurality of protrusions 16 are protruded, and the heat sink plate 4 is brought into contact with the protrusions 16 and fixed with the screws 5.

The heat dissipating nut 3 is made of a material with low thermal conductivity, such as synthetic resin, and is formed integrally with the protrusion 16 to have a wide thickness in the axial direction.

The connector 2 inserts and holds a contact pin 11 so that the heater 7 and the cord 10 are electrically connected through the contact pin 11.

The stopper 12 is formed in a cylindrical shape, and the heat sink 4
The heater collar 17 has a stepped portion 21 that comes into contact with the end surface of the heater collar 17, and a stepped portion 22 that comes into contact with the end surface of the heater collar 17, and the heater 7 passes through the center portion.

That is, the stopper 12 is fitted into the heat sink 4 and the stepped portion 2
1 determines the position from the bottom, and at the same time, the stepped portion 22 moves the heater collar 17 to the right, and the contacts 1 to
This is to prevent accidents from coming into contact with conductive parts such as the pin 11.

With the above-described configuration, the present invention does not require any special tools, and the soldering iron tip unit can be easily replaced by unscrewing the heat dissipation nut 3 and the grip 1 even when the heat is high immediately after use. I made it possible.

However, with this structure, there is a risk that the stopper 12 may often be forgotten during assembly, and as a result, there is a risk that the heater collar 17 may move to the right and cause an accident in which it comes into contact with a conductive part. found.

The present invention was developed in view of the above-mentioned circumstances, and aims to provide an electric soldering iron which solves the above-mentioned problems and reduces the number of parts.

That is, in the present invention, a heat dissipating nut that is non-thermally conductive and has a width in the axial direction is interposed between the heat dissipating plate and the grip, and in addition to dissipating the heat, a plurality of protrusions are provided on the side of the heat dissipating plate. A heat dissipation plate is fixed to the heat dissipation nut, a recess is provided on the grip side of the heat dissipation nut, a protrusion of the grip is removably attached to the recess, and the heat dissipation plate is integrally formed with a wall surface substantially perpendicular to the axis on the iron tip side. This electric soldering iron is characterized in that the wall surface is provided with a recessed step portion for stopping a heater collar.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 2 and 3, reference numeral 24 denotes a heat sink. The heat sink 24 has approximately the same thickness and has a stepped portion 25 and a through hole 26 on its end surface.

Further, a screw 27 is provided around the outer peripheral surface in the radial direction.

28 is a mounting hole for the heat dissipation nut 3. The co-organized parts are the same as those shown in FIG. 1 above, and therefore their explanation will be omitted.

The heat dissipation plate 24 according to the present invention is constructed as described above, and is assembled in the state shown in FIG. Just tighten it.

When replacing the soldering iron tip unit, it is sufficient to rotate the heat dissipation nut 3 and unscrew it from the grip 1.

As shown in L below, the heat dissipation plate 24 according to the present invention is interposed between the heat dissipation nut 3 and the cover nut 9, and performs the function of dissipating heat from the heater 7 portion, and must be assembled as a product. If it is not done, it will not be an integrated finished product, so the phenomenon of forgetting to assemble the heat sink 24 cannot occur.

Therefore, the function of stopping the movement of the heater collar 17 is automatically provided, and accidents caused by forgetting to install the stopper 12 can be completely prevented.

Furthermore, the stopper 12 is not required, and a soldering iron with similar functions can be obtained using only the heat sink 24, so the number of parts is reduced and costs can be reduced.

Furthermore, as is clear from FIG. 1, this stopper 12 has a large contact surface with the end of the heater collar 17.
Since the mass is large, a large amount of heat is taken from the heater at the beginning of use, and at the same time it is difficult to cool down after use.However, according to the present invention, the contact surface between the heat sink 24 and the end of the heater collar 17 These drawbacks have been improved by reducing the amount of energy and mass of the device.

[Brief explanation of drawings]

FIG. 1 is a partial vertical cross-sectional view of an electric soldering iron equipped with a stopper, FIG. 2 is a partial vertical cross-sectional view of the electric soldering iron according to the present invention, and FIG. 3 is a vertical cross-sectional view of a heat sink used in the present invention. 1...Grip, 2...Connector,
3... Heat sink nut, 4... Heat sink, 6
... Soldering tip, 7 ... Heater 8 ...
...Heater cover, 9...Cover nut,
10... Cord, 11... Contact pin, 12... Stopper, 17...
Heater collar, 24... Heat sink.

Claims (1)

[Scope of utility model registration request] A non-thermally conductive heat dissipating nut with a width in the axial direction is interposed between the heat dissipating plate and the grip, and the heat dissipating nut I is provided with a plurality of protrusions on the heat dissipating plate side, and the heat dissipating plate is attached to the protrusions. A recess is provided on the grip side of the heat dissipation nut, and the protrusion of the grip is removably attached to the recess, and the heat dissipation plate is integrally provided with a wall surface substantially perpendicular to the axis on the iron tip side, and An electric soldering iron characterized by having a recessed step that stops the heater collar.