JP7090242B2 - Cordless soldering iron and holding stand - Google Patents

Description

The present invention relates to a cordless soldering iron and a holding table used by attaching a battery to the soldering iron body.

In soldering work, it is common to supply power to the soldering iron from AC 100V, which is a commercial power source, using a power cable, and to keep the temperature of the soldering iron at a high temperature. At this time, the work of constantly supplying power to the heater, placing the soldering iron on the iron stand while keeping the iron tip temperature at a high temperature, and soldering the electronic parts as necessary is repeated. However, the less experienced electronic work is, the longer it takes to place the electronic components on the printed circuit board, and as a result, the soldering iron is placed on the iron stand in a high temperature state. Further, in the process of soldering work, the tip of the soldering iron, which is in a high temperature state, often comes into contact with the power cable. Therefore, a cable having excellent heat resistance is used for supplying power. Although such cables have excellent heat resistance, they are often stressful in terms of flexibility and cable weight.
In the task training to mount the designed electronic circuit on the printed circuit board, students form a group of a certain number of people and share a limited work desk. In this training, tools such as soldering irons and nippers owned by each student will be used. Therefore, the desk is occupied by soldering irons and tools in addition to electronic parts. Therefore, in addition to lowering the work efficiency, there is a risk that the soldering iron cable may get entangled with the adjacent worker and the soldering iron may fall, leading to injury such as burns.
In this way, soldering irons that use a power cable connected to a commercial power supply are not suitable for delicate soldering, which is a practical task, or group work on a cramped work desk, and improvement in learning efficiency is required. ..
Battery-powered cordless soldering irons and gas-heated cordless soldering irons are commercially available as soldering irons that solve these problems. However, the battery-powered cordless soldering iron on the market is not suitable for task training because the continuous use time is as short as about 1 hour. In addition, the gas heat type cordless soldering iron is not suitable for practical training work such as flux application where fire is strictly prohibited.
Patent Document 1 discloses a cordless soldering iron using a secondary battery as a power source, and Patent Document 2 discloses a battery-powered cordless soldering iron that can selectively use a power cartridge containing a battery.
Further, Patent Document 3 discloses a cordless electric solder heating appliance in which an electric double layer capacitor is used as a power supply unit and the capacitor is automatically charged when a soldering iron is placed on a dedicated holding table.

Microfilm of Jitsugyo No. 59-195921 (Jitsukaisho No. 61-11670) Japanese Unexamined Patent Publication No. 2006-26744 International Publication No. 2005/084865

By using a cordless soldering iron as disclosed in Patent Documents 1 to 3, the problem related to the soldering iron cable can be solved.
However, especially for students who have little experience in electronic work, it takes a long time to install electronic components such as resistors and semiconductors on the electronic board, so the soldering iron is left on the holding table in a high temperature state for a long time. .. If the soldering iron is left in such a high temperature state, not only power is wasted, but also the tip of the iron tip of the soldering iron forms an oxide film due to heat, and the soldering work cannot be performed. Especially for students who are unfamiliar with electronic circuit mounting, the soldering iron is left for a long time, so it is necessary to clean the iron tip each time, and maintenance takes a lot of time.

Therefore, the present invention is a cordless soldering iron that does not require cleaning of the iron tip even if it is placed on the holding table for a long time, and even a student who is not accustomed to soldering work can perform safe and efficient soldering work. And to provide a holding table.

The cordless soldering iron of the present invention according to claim 1 is a cordless soldering iron body to which a trowel tip is attached and a cordless soldering iron body to which a battery is attached to the soldering iron body, and is connected to the soldering iron body to the output terminal of the battery. It is provided with a power supply terminal, a charging terminal connected to the input terminal of the battery, an energization control switch for opening and closing the energizing circuit between the power supply terminal and the iron tip, and an input terminal on the main body side connected to the charging terminal. By placing the soldering iron main body on the holding table, the energization control switch opens the energization circuit, the main body side input terminal is connected to the charging unit, and the power supply terminal becomes one power supply terminal and the other power supply terminal. The one-sided power supply terminal is connected to the energization circuit to the iron tip and a conductive material arranged on the outer peripheral surface of the iron tip or the outer peripheral surface of the iron tip via a heat-resistant electric insulating material. The other power supply terminal is provided with a changeover switch for switching between the energization circuit to the iron tip and the connection to the continuity checker terminal, and the continuity checker terminal is provided on the soldering iron main body by the changeover switch. The one power supply terminal is connected to the outer peripheral surface of the iron tip or the conductive material, the other power supply terminal is connected to the continuity checker terminal, one probe is connected to the continuity checker terminal, and the iron tip is used as the other probe. It is characterized in that a continuity check is performed using the one-sided probe and the iron tip .
The present invention according to claim 2 is characterized in that a reed switch is used as the energization control switch in the cordless soldering iron according to claim 1.
The present invention according to claim 3 is the cordless soldering iron according to claim 1 or 2, wherein the battery is provided with a constant voltage circuit.
The present invention according to claim 4 is the cordless soldering iron according to any one of claims 1 to 3, wherein the battery is provided with an energization stop switch for stopping energization from the output terminal. It is a feature.
The present invention according to claim 5 is the cordless soldering iron according to any one of claims 1 to 4, wherein the soldering iron body is provided with a display unit indicating an energized state to the iron tip. It is a feature.
According to the sixth aspect of the present invention, in the cordless soldering iron according to any one of claims 1 to 5, the main body side input terminal is composed of one main body side input terminal and the other main body side input terminal. The input terminal on the one main body side is the conductive material arranged on the outer peripheral surface of the iron tip or the outer peripheral surface of the iron tip via the heat-resistant electric insulating material, and the input terminal on the other main body side is attached to the soldering iron main body. It is characterized by being provided.
The holding table of the present invention according to claim 7 is used by attaching a soldering iron main body to which a trowel tip is attached and a battery attached to the soldering iron main body, and the soldering iron main body has a power supply terminal connected to an output terminal of the battery and the said. The soldering iron body is provided with a charging terminal connected to the input terminal of the battery, an energization control switch for opening and closing the energizing circuit between the power supply terminal and the iron tip, and an input terminal on the main body side connected to the charging terminal. By placing it on the holding table, the energizing control switch opens the energizing circuit, the input terminal on the main body side is connected to the charging unit, and the holding used for the cordless soldering iron using the lead switch as the energizing control switch. It is a stand and is characterized by being provided with a magnet for operating the lead switch.
According to a eighth aspect of the present invention, the magnet can be moved to a first position in which the reed switch is operated and a second position in which the reed switch is not operated in the holding table according to the seventh aspect. It is a feature.
The present invention according to claim 9 is characterized in that, in the holding table according to claim 7 , the magnet is used as an electromagnet, and a control unit for intermittently energizing the electromagnet is provided.
According to the tenth aspect of the present invention, in the holding table according to the seventh aspect, the main body side input terminal is composed of one main body side input terminal and the other main body side input terminal, and the one main body side input terminal is the iron. The outer peripheral surface of the tip of the iron is provided, and the input terminal on the other side of the main body is provided on the main body of the soldering iron. A pair of movable arms to be supported are provided, and the magnet is provided at the other end of the pair of movable arms, and the reed switch is operated by the magnet provided on one of the movable arms to the other movable arm. It is characterized in that the magnet is connected to the other main body side input terminal, and the one main body side input terminal is connected to the above-mentioned mounting member.
The present invention according to claim 11 is characterized in that the holding table according to claim 7 is provided with a heat insulating cover that keeps at least the tip of the iron tip warm.

According to the present invention, while the soldering iron body is placed on the holding table, charging is performed and the temperature of the soldering iron tip is lowered by opening the energizing circuit to form an oxide film at the tip of the soldering iron tip. It is possible to prevent this from happening, and even if the soldering iron body is placed on the holding table for a long time, there is no need to clean the tip of the soldering iron, and even students who are not accustomed to soldering work can perform safe and efficient soldering work. Can be done.

A block diagram showing a cordless soldering iron according to an embodiment of the present invention as a means for realizing a function. Block diagram showing the soldering work of the same cordless soldering iron Block diagram showing the normal state when the cordless soldering iron is placed on the holding table A block diagram showing the cordless soldering iron placed on a holding table while maintaining its heating state. Block diagram showing the usage status of the continuity checker of the same cordless soldering iron Configuration diagram showing the same cordless soldering iron Configuration diagram showing the holding table used for the cordless soldering iron Characteristic diagram of the same cordless soldering iron A block diagram showing a cordless soldering iron according to another embodiment of the present invention as a means for realizing a function. Characteristic diagram of the cordless soldering iron shown in FIG. A block diagram showing a holding table suitable for the cordless soldering iron shown in FIG. 9 by means for realizing the function. Characteristic diagram of the cordless soldering iron when the holding table shown in FIG. 11 is used. A block diagram showing a cordless soldering iron according to still another embodiment of the present invention as a means for realizing a function.

In the cordless soldering iron according to the first embodiment of the present invention, the soldering iron body has a power supply terminal connected to the output terminal of the battery, a charging terminal connected to the input terminal of the battery, and a power supply terminal and a trowel tip. It is equipped with an energization control switch that opens and closes the energization circuit and an input terminal on the main body side that is connected to the charging terminal. Is connected to the charging unit, and the power supply terminal is composed of one power supply terminal and the other power supply terminal. It is equipped with a changeover switch that switches between connecting to a conductive material arranged via an insulating material and switching the power supply terminal between an energization circuit to the iron tip and a connection to a continuity checker terminal, and the continuity checker terminal is a soldering iron body. One power supply terminal is connected to the outer peripheral surface of the iron tip or the conductive material, the other power supply terminal is connected to the continuity checker terminal, one probe is connected to the continuity checker terminal, and the iron tip is used as the other probe. On the other hand, the continuity check is performed using the probe and the iron tip . According to this embodiment, while the soldering iron body is placed on the holding table, charging is performed and the temperature of the soldering iron tip is lowered by opening the energizing circuit, so that an oxide film is formed on the tip of the soldering iron tip. It can be prevented from being formed, and even if the soldering iron body is placed on the holding table for a long time, there is no need to clean the tip of the soldering iron, and even students who are not accustomed to soldering work can perform safe and efficient soldering work. It can be carried out. Further, by providing the continuity check function, it is possible to confirm the soldered state especially when lead-free solder is used.

The second embodiment of the present invention uses a reed switch as an energization control switch in the cordless soldering iron according to the first embodiment. According to this embodiment, the energization circuit can be easily opened by providing a reed switch on the soldering iron main body.

A third embodiment of the present invention is the cordless soldering iron according to the first or second embodiment, wherein the battery is provided with a constant voltage circuit. According to this embodiment, the iron tip temperature does not decrease due to electric discharge, and stable soldering work can be performed.

A fourth embodiment of the present invention is the cordless soldering iron according to any one of the first to third embodiments, wherein the battery is provided with a power supply stop switch for stopping power supply from the output terminal. According to the present embodiment, by providing the battery with an energization stop switch, it is possible to prevent discharge when not in use and to improve safety.

A fifth embodiment of the present invention is the cordless soldering iron according to any one of the first to fourth embodiments, wherein the soldering iron main body is provided with a display unit indicating an energized state to the iron tip. According to this embodiment, it is possible to confirm the energization state of the iron tip, especially when the soldering iron main body is placed on the holding table.

In the sixth embodiment of the present invention, in the cordless soldering iron according to any one of the first to fifth embodiments, the main body side input terminal is composed of one main body side input terminal and the other main body side input terminal. The input terminal on the main body side is a conductive material arranged on the outer peripheral surface of the iron tip or the outer peripheral surface of the iron tip via a heat-resistant electric insulating material, while the input terminal on the main body side is provided on the main body of the soldering iron. According to this embodiment, by using the outer peripheral surface of the iron tip or the conductive material as the input terminal on the one side of the main body, the connection to the charging unit can be easily performed.

The holding table according to the seventh embodiment of the present invention is used by attaching a soldering iron body to which a trowel tip is attached and a battery attached to the soldering iron body, and the soldering iron body has a power supply terminal connected to the output terminal of the battery and a battery. It is equipped with a charging terminal connected to the input terminal, an energization control switch that opens and closes the energizing circuit between the power supply terminal and the iron tip, and an input terminal on the main body side connected to the charging terminal, and the soldering iron main body is placed on the holding table. As a result, the energization control switch opens the energization circuit, the input terminal on the main body side is connected to the charging unit, and the energization control switch is equipped with a magnet that operates the reed switch on the holding table used for the cordless soldering iron using the reed switch. It is a thing. According to this embodiment, the reed switch can be easily operated by providing the holding base with a magnet.

In the eighth embodiment of the present invention, the magnet can be moved to the first position where the reed switch is operated and the second position where the reed switch is not operated in the holding table according to the seventh embodiment. Is. According to this embodiment, the energization to the iron tip can be maintained by moving the magnet to the second position.

A ninth embodiment of the present invention is the holding table according to the seventh embodiment, wherein the magnet is an electromagnet and a control unit for intermittently energizing the electromagnet is provided. According to this embodiment, it is possible to prevent the iron tip temperature from dropping too much while preventing the formation of an oxide film at the tip of the iron tip, and the soldering work after the soldering iron body is placed on the holding table can be performed quickly. It can be carried out.

In the tenth embodiment of the present invention, in the holding table according to the seventh embodiment, the main body side input terminal is composed of one main body side input terminal and the other main body side input terminal, and one main body side input terminal is ironed. A pair of mounting members on which the iron tip is mounted, a pedestal that supports the mounting member, and one end that is supported by the pedestal, with the iron tip outer peripheral surface as the outer peripheral surface and the other body side input terminal provided on the soldering iron body. A movable arm is provided, a magnet is provided at the other end of the pair of movable arms, a reed switch is operated by the magnet provided on one movable arm, and a magnet provided on the other movable arm is used as an input terminal on the other main body side. It is connected and the input terminal on the main body side is connected to the mounting member. According to this embodiment, charging can be performed with a simple device configuration, and the temperature of the iron tip can be lowered by opening the energizing circuit.

In the eleventh embodiment of the present invention, the holding table according to the seventh embodiment is provided with a heat insulating cover that keeps at least the tip of the iron tip warm. According to this embodiment, it is possible to prevent the temperature of the iron tip from dropping, and it is possible to quickly perform the soldering work after the soldering iron main body is placed on the holding table.

Hereinafter, examples of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a cordless soldering iron according to an embodiment of the present invention as a means for realizing a function.
The cordless soldering iron according to this embodiment is composed of a soldering iron main body 20 to which the iron tip 10 is attached and a battery 30 attached to the soldering iron main body 20.
The soldering iron body 20 opens and closes a power supply terminal 21 connected to the output terminal 31 of the battery 30, a charging terminal 22 connected to the input terminal 32 of the battery 30, and an energization circuit 23 between the power supply terminal 21 and the iron tip 10. The energization control switch 24, the input terminal 25 on the main body side connected to the charging terminal 22, the display unit 26 showing the energization state to the iron tip 10, the changeover switch 27, the pressing switch 28, and the continuity checker terminal 29. It is equipped with.

The main body side input terminal 25 is composed of, for example, one main body side input terminal 25a which is a positive terminal and the other main body side input terminal 25b which is a negative terminal.
On the other hand, the main body side input terminal 25a is the iron tip outer peripheral surface 11 of the iron tip 10, and the other main body side input terminal 25b is provided on the soldering iron main body 20.
On the other hand, the input terminal 25b on the main body side and the continuity checker terminal 29 are electrically connected and have the same potential.

The power supply terminal 21 is composed of, for example, one power supply terminal 21a which is a positive terminal and the other power supply terminal 21b which is a negative terminal.
The changeover switch 27 switches between a soldering iron use state and a continuity checker use state. That is, the changeover switch 27 switches one power supply terminal 21a between the connection of the iron tip 10 to the energization circuit 23 and the connection of the iron tip 10 to the iron tip outer peripheral surface 11, and the other power supply terminal 21b is connected to the interlocking switch 27a. The connection to the energization circuit 23 of the iron tip 10 and the connection to the continuity checker terminal 29 are switched via the above. The interlocking switch 27a operates in conjunction with the changeover switch 27.

Inside the iron tip 10, a heating source 13 for heating the tip 12 of the iron tip 10 is provided. The heating source 13 is connected to one power supply terminal 21a and the other power supply terminal 21b by an energization circuit 23.

The battery 30 includes an energization stop switch 33 for stopping energization from the output terminal 31, and a constant voltage circuit 34 composed of, for example, a regulator.

The holding table 50 on which the cordless soldering iron is placed includes a charging unit 60 for charging the battery 30 and an energizing control switch operating unit 70 for operating the energizing control switch 24.
The charging unit 60 is a power source including a secondary battery, a power supply circuit that converts electric power supplied from an AC power source, or a connection terminal with an external power source. The charging unit 60 includes one charging unit side terminal 61a that comes into contact with the iron tip outer peripheral surface 11 and the other charging unit side terminal 61b that is connected to the other main body side input terminal 25b.

In this embodiment, the energization control switch operating unit 70 is a magnet 71, and the energization control switch 24 is a reed switch. The energization control switch 24, which is a reed switch, is operated depending on the position of the magnet 71. The magnet 71 can move to a first position 71a in which the reed switch is operated and a second position 71b in which the reed switch is not operated.
The energization control switch operating unit 70 may be any as long as it operates the energization control switch 24 by mounting the soldering iron main body 20 on the holding base 50. For example, the energization control switch 24 appears on the outer surface of the soldering iron main body 20. The switch may be a possible switch, and the energization control switch operating unit 70 may be configured to press the energization control switch 24 that can appear and disappear by mounting the soldering iron main body 20 on the holding table 50.

FIG. 2 is a block diagram showing a time of soldering work of a cordless soldering iron according to this embodiment.
During the soldering work of the cordless soldering iron, the tip 12 of the iron tip 10 is heated by the heating source 13.
The energization stop switch 33 of the battery 30 is off, that is, the battery 30 is energized from the output terminal 31.
Since the soldering iron main body 20 is removed from the holding table 50, the energization control switch 24 closes the energization circuit 23.
The changeover switch 27 is in a soldering iron use state. Therefore, the one power supply terminal 21a and the other power supply terminal 21b are connected to the energization circuit 23 to the iron tip 10.
Therefore, the heating source 13 is energized from the battery 30 to be heated, and the display unit 26 displays the soldering iron usage state by lighting or blinking.

FIG. 3 is a block diagram showing a normal state in which the cordless soldering iron according to this embodiment is placed on a holding table.
By placing the cordless soldering iron on the holding base 50, one main body side input terminal 25a is connected to one charging part side terminal 61a via the iron tip outer peripheral surface 11, and the other main body side input terminal 25b is the other charging part side terminal. It is connected to 61b.
Therefore, the battery 30 is charged by the charging unit 60.
The energization control switch 24 opens the energization circuit 23 by the energization control switch operating unit 70. Specifically, when the magnet 71 constituting the energization control switch operating unit 70 is close to the reed switch constituting the energization control switch 24 (first position 71a), the energization control switch 24 is turned off. There is.
Therefore, the heating source 13 is not energized from the battery 30, and the display unit 26 indicates by non-lighting that the soldering iron is not in use.
The energization stop switch 33 of the battery 30 may be turned off, and the changeover switch 27 may be in the state of using the continuity checker.

FIG. 4 is a block diagram showing a state in which the cordless soldering iron according to the present embodiment is placed on a holding table while maintaining a heated state.
In order to maintain the heated state of the heating source 13 while being placed on the holding table 50, the energization control switch operating unit 70 is switched to the non-operating state.
FIG. 4 shows a state (second position 71b) in which the magnet 71 constituting the energization control switch operating unit 70 is separated from the reed switch constituting the energization control switch 24.

By deactivating the energization control switch 24, the energization control switch 24 keeps the energization circuit 23 closed, and the one power supply terminal 21a and the other power supply terminal 21b are connected to the energization circuit 23 to the iron tip 10. Has been done.
The energization stop switch 33 of the battery 30 is off, and the changeover switch 27 is in the soldering iron use state.
Therefore, the heating source 13 is energized from the battery 30 to be heated, and the display unit 26 displays the soldering iron usage state by lighting or blinking.

FIG. 5 is a block diagram showing a state in which the continuity checker of the cordless soldering iron according to this embodiment is used.
The heating source 13 is not heated when the continuity checker of the cordless soldering iron is used.
The energization stop switch 33 of the battery 30 is off, that is, the battery 30 is energized from the output terminal 31.
Since the soldering iron main body 20 is removed from the holding table 50, the energization control switch 24 closes the energization circuit 23.
The changeover switch 27 is in the state of using the continuity checker. Therefore, one power supply terminal 21a is connected to the iron tip outer peripheral surface 11 of the iron tip 10, and the other power supply terminal 21b is connected to the continuity checker terminal 29.
One probe 80 is connected to the continuity checker terminal 29, the iron tip 10 is used as the other probe, and the continuity check is performed using the one probe 80 and the iron tip 10.
It is preferable to provide a pressing switch 28 between the output terminal 31 and the continuity checker terminal 29. The pressing switch 28 closes the circuit from the output terminal 31 to the continuity checker terminal 29 only while the user is pressing the pressing switch 28.
Although the continuity confirmation display unit may be provided between the continuity checker terminal 29 and the probe 80, the continuity confirmation display unit 26 can be used as the continuity confirmation display unit.

FIG. 6 is a configuration diagram showing a cordless soldering iron according to this embodiment.
The iron tip 10 is attached to one end side of the soldering iron main body 20, and the battery 30 is attached to the other end side of the soldering iron main body 20.
The battery 30 is attached to the soldering iron main body 20 by fitting the power supply terminal 21 and the output terminal 31 and fitting the charging terminal 22 and the input terminal 32.
The battery 30 is removable from the soldering iron body 20.
On the other hand, the input terminal 25a on the main body side is connected to the outer peripheral surface 11 of the iron tip of the iron tip 10 inside the soldering iron main body 20.
On the other hand, the input terminal 25b on the main body side is arranged on the outer surface of the soldering iron main body 20.
When a reed switch is used as the energization control switch 24 as in this embodiment, it is preferable to arrange the reed switch inside the soldering iron main body 20 on one end side of the soldering iron main body 20 rather than the display unit 26 and the changeover switch 27.
When the holding base 50 shown in FIG. 7 is used, it is preferable to arrange the reed switch and the input terminal 25b on the other side of the main body on the opposite outer peripheral surfaces of the soldering iron main body 20.

FIG. 7 is a configuration diagram showing a holding table used for the cordless soldering iron according to the present embodiment.
The holding base 50 according to the present embodiment includes a mounting member 51 on which the iron tip 10 is placed, a pedestal 52 for supporting the mounting member 51, and a pair of movable arms 53 whose one end is supported by the pedestal 52. It is provided with a charging unit 60 which is a connection terminal with an external power source. The mounting member 51 is made of a conductive material. The holding table 50 according to this embodiment is used by connecting another secondary battery or an external power source to the charging unit 60.
Magnets 54 are provided at the other ends of the pair of movable arms 53, respectively.
A fixing magnet 55 is provided on the bottom surface of the cradle 52. The fixing magnet 55 is arranged on the mounting member 51 side. By providing the fixing magnet 55, it is possible to prevent the holding table 50 from moving when it is used on a metal desk or the like, and the cordless soldering iron can be stably placed. Further, by arranging the fixing magnet 55 on the mounting member 51 side, the soldering iron main body 20 can be mounted on the holding table 50 with the iron tip 10 at a high position.
The pedestal 52 has the same potential as the movable arm 53 and the magnet 54 and has a ground potential, and is insulated from the mounting member 51. One charging unit side terminal 61a of the charging unit 60 is connected to the mounting member 51, and the other charging unit side terminal 61b of the charging unit 60 is connected to each magnet 54.

In the cordless soldering iron according to this embodiment, as shown in FIG. 6, one main body side input terminal 25a is provided on the outer peripheral surface of the iron tip of the iron tip 10, and the other main body side input terminal 25b is provided on the outer peripheral surface of the soldering iron main body 20 to energize. As the control switch 24, the reed switch and the input terminal 25b on the other side of the main body are arranged on the outer peripheral surfaces of the soldering iron main body 20 facing each other. Therefore, by placing the cordless soldering iron on the holding table 50, the reed switch is operated by the magnet 54 provided on one movable arm 53, and the other main body side input terminal is operated by the magnet 54 provided on the other movable arm 53. It can be connected to the 25b, and the input terminal 25a on the one side of the main body and the terminal 61a on the one side of the charging part 60 can be connected by the contact between the mounting member 51 and the outer peripheral surface 11 of the iron tip.
Therefore, as described with reference to FIG. 3, the battery 30 can be charged without energizing the heating source 13 with the energization control switch 24 turned off.
Further, as described with reference to FIG. 4, in order to maintain the heated state of the heating source 13, the magnet 54 provided on one of the movable arms 53 is separated from the reed switch, so that the energization control switch operating unit 70 is in a non-operating state. Can be.

FIG. 8 is a characteristic diagram of a cordless soldering iron according to this embodiment.
In FIG. 8, the vertical axis is the temperature of the tip 12 of the iron tip 10, the horizontal axis is the elapsed time, the characteristics of the battery 30 provided with the constant voltage circuit 34 according to the present embodiment are A, and the constant voltage circuit 34 according to the comparative example is provided. The characteristic of the non-battery 30 is shown as B. A lithium ion battery is used as the battery 30 according to the present embodiment, and the constant voltage circuit 34 converts the voltage from 3.7v to 5v.
The melting point of eutectic solder is 183 ° C, and the melting point of lead-free solder is 217 ° C, but the temperature of the tip 12 of the iron tip 10 suitable for soldering work is 340 ° C to 380 ° C.
In the characteristic B shown as a comparative example, the temperature of the tip 12 of the iron tip 10 gradually decreases with the elapsed time. As described above, when the temperature of the tip 12 of the iron tip 10 gradually decreases, the degree of melting of the solder differs depending on the elapsed time, so that it is difficult to perform efficient soldering work.
On the other hand, in the characteristic A shown as the present embodiment, a stable temperature is maintained without being affected by the elapsed time, and efficient soldering work can be performed.

As described above, according to the present embodiment, by placing the soldering iron main body 20 on the holding base 50, the energization control switch 24 opens the energization circuit 23, and the main body side input terminal 25 is connected to the charging unit 60. Therefore, while the soldering iron body 20 is placed on the holding table 50, charging is performed, and the energization circuit 23 is opened to lower the temperature of the iron tip 10, so that an oxide film is formed on the tip 12 of the iron tip 10. It can be prevented from being formed, and even if the soldering iron body 20 is placed on the holding table 50 for a long time, there is no need to clean the iron tip 10, and even students who are not accustomed to soldering work can safely and efficiently solder. You can do the soldering work.
Further, according to the present embodiment, the energization circuit 23 can be easily opened by providing the soldering iron main body 20 with a reed switch and providing the holding base 50 with a magnet 71 for operating the reed switch.
Further, according to the present embodiment, by providing the constant voltage circuit 34 in the battery 30, the temperature of the iron tip 10 does not decrease due to electric discharge, and stable soldering work can be performed.
Further, according to the present embodiment, by providing the battery 30 with the energization stop switch 33, it is possible to prevent discharge when not in use and to improve safety.
Further, according to the present embodiment, the soldering iron main body 20 is provided with a display unit 26 indicating the energization state of the soldering iron tip 10, so that the soldering iron main body 20 is particularly placed on the holding table 50. You can check the energization status of the soldering iron.
Further, according to the present embodiment, by using the iron tip outer peripheral surface 11 as the input terminal 25a on the one side of the main body, the connection to the charging unit 60 can be easily performed.
Further, according to the present embodiment, by providing the continuity check function, it is possible to confirm the soldered state especially when lead-free solder is used.
Further, according to the present embodiment, since the magnet 71 can be moved to the first position 71a in which the reed switch is operated and the second position 71b in which the reed switch is not operated, the magnet 71 is moved to the second position 71b. By moving it, it is possible to maintain the energization of the iron tip 10.
Further, according to the present embodiment, a mounting member 51 on which the iron tip 10 is mounted, a pedestal 52 for supporting the mounting member 51, and a pair of movable arms 53 whose one end is supported by the pedestal 52 are provided. A magnet 54 is provided at the other end of the pair of movable arms 53, the reed switch is operated by the magnet 54 provided on one movable arm 53, and the other main body side input is provided by the magnet 54 provided on the other movable arm 53. By connecting to the terminal 25b and connecting the input terminal 25a on the main body side to the mounting member 51, charging can be performed with a simple device configuration, and the energization circuit 23 can be opened to lower the temperature of the iron tip 10. ..

FIG. 9 is a block diagram showing a cordless soldering iron according to another embodiment of the present invention by means for realizing a function. The same functional members as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.
In the cordless soldering iron according to this embodiment, the energization control switch operating unit 70 uses an electromagnet 75 and includes a control unit 76 that intermittently energizes the electromagnet 75.

FIG. 10 is a characteristic diagram of the cordless soldering iron shown in FIG.
In FIG. 10, the vertical axis is the temperature of the tip 12 of the iron tip 10, and the horizontal axis is the elapsed time. In the control unit 76, the cordless soldering iron is placed on the holding table 50, and the stop time T1 and the energization time T2 are repeatedly performed. It is a thing.
By intermittently energizing the electromagnet 75 by the control unit 76 as in this embodiment, the temperature of the soldering iron 10 drops too much while preventing the formation of an oxide film at the tip 12 of the soldering iron 10. It is possible to quickly perform the soldering work after the soldering iron main body 20 is placed on the holding table 50.
Even when the electromagnet 75 is intermittently energized as in the present embodiment, the battery 30 is continuously charged by the charging unit 60.
It is preferable that the stop time T1 and the energization time T2 can be changed by the control unit 76 according to the usage environment.

FIG. 11 is a block diagram showing a holding table suitable for the cordless soldering iron shown in FIG. 9 by a function realizing means. The same functional members as those in FIG. 9 are designated by the same reference numerals, and the description thereof will be omitted.
The holding table 50 according to this embodiment is provided with a heat insulating cover 56 that keeps at least the tip 12 of the iron tip 10 warm. The heat insulating cover 56 is formed in a bottomed tubular shape using, for example, a heat-resistant glass material.
By providing the heat insulating cover 56 in this way, the tip 12 of the iron tip 10 can be kept warm, and the solder residue adhering to the tip 12 of the iron tip 10 can be collected.

FIG. 12 is a characteristic diagram of a cordless soldering iron when the holding table shown in FIG. 11 is used.
In FIG. 12, similarly to FIG. 10, the vertical axis is the temperature of the tip 12 of the iron tip 10 and the horizontal axis is the elapsed time. The time T2 is repeated.
By providing the heat insulating cover 56 as in the present embodiment, it is possible to prevent the temperature of the iron tip 10 from dropping, and it is possible to quickly perform the soldering work after the soldering iron main body 20 is placed on the holding table 50.
Although the case where the control unit 76 for intermittently energizing the electromagnet 75 is provided, even if the control unit 76 is not provided, the iron can be provided by providing the heat insulating cover 56. It is possible to prevent the temperature of the tip 10 from dropping too much, and it is possible to quickly perform the soldering work after the soldering iron main body 20 is placed on the holding table 50.

FIG. 13 is a block diagram showing a cordless soldering iron according to still another embodiment of the present invention by means for realizing a function. The same functional members as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.
The iron tip 10a according to the present embodiment is for the iron tip type in which the iron tip outer peripheral surface 11 cannot be used as the input terminal 25a on the main body side.
When such a trowel tip 10a is used, a heat-resistant electric insulating material 14 arranged on the trowel tip outer peripheral surface 11 and a conductive material 15 insulated from the trowel tip outer peripheral surface 11 by the heat-resistant electric insulating material 14 are used.
For example, a tape-shaped heat-resistant electric insulating material 14 is wound around the outer peripheral surface 11 of the iron tip, and a conductive material 15 made of a metal pipe is covered with the tape-shaped heat-resistant electric insulating material 14.
In this embodiment, the input terminal 25a on the main body side is connected to the conductive material 15 provided on the outer peripheral surface 11 of the iron tip 10a. The changeover switch 27 switches the power supply terminal 21a between the connection of the iron tip 10a to the energization circuit 23 and the connection of the iron tip 10a to the conductive material 15 provided on the iron tip outer peripheral surface 11. One of the charging unit side terminals 61a of the charging unit 60 comes into contact with the conductive material 15 provided on the outer peripheral surface 11 of the iron tip.
In this way, by providing the conductive material 15 arranged on the outer peripheral surface 11 of the iron tip via the heat-resistant electric insulating material 14, the outer peripheral surface 11 of the iron tip cannot be used as the input terminal 25a on the one side of the iron tip 10a. Even if there is, the connection to the charging unit 60 can be easily performed.

The cordless soldering iron of the present invention is most suitable as a soldering iron used in task training in an educational institution, but it is also suitable as a soldering iron used in outdoor work.

10, 10a Iron tip 11 Iron tip outer peripheral surface 12 Tip 13 Heating source 14 Heat-resistant electrical insulating material 15 Conductive material 20 Handagote main body 21 Power supply terminal 21a One power supply terminal 21b The other power supply terminal 22 Charging terminal 23 Energization circuit 24 Energization control switch 25 Main body side Input terminal 25a One main unit side input terminal 25b The other main unit side input terminal 26 Display unit 27 Changeover switch 28 Press switch 29 Conduction checker terminal 30 Battery 31 Output terminal 32 Input terminal 33 Energization stop switch 34 Constant voltage circuit 50 Holding stand 51 Mounting member 52 Cradle 53 Movable arm 54 Magnet 55 Fixing magnet 56 Heat insulation cover 60 Charging unit 61a One charging unit side terminal 61b The other charging unit side terminal 70 Energizing control switch operating unit 71 Magnet 75 Electric magnet 76 Control unit

Claims (11)

A soldering iron body to which the iron tip is attached and a cordless soldering iron used by attaching a battery to the soldering iron body.
The soldering iron body has
The power supply terminal connected to the output terminal of the battery and
The charging terminal connected to the input terminal of the battery and
An energization control switch that opens and closes the energization circuit between the power supply terminal and the iron tip,
It is equipped with an input terminal on the main body side that is connected to the charging terminal.
By placing the soldering iron body on the holding table,
The energization control switch opens the energization circuit and
The input terminal on the main body side is connected to the charging unit ,
The power supply terminal is composed of one power supply terminal and the other power supply terminal.
The one-sided power supply terminal is switched between the energization circuit to the iron tip and the connection to the conductive material arranged on the outer peripheral surface of the iron tip or the outer peripheral surface of the iron tip via the heat-resistant electric insulating material. The other power supply terminal is provided with a changeover switch for switching between the energization circuit to the iron tip and the connection to the continuity checker terminal.
The continuity checker terminal is provided on the soldering iron body, and the soldering iron body is provided.
The changeover switch connects the one power supply terminal to the outer peripheral surface of the iron tip or the conductive material, and connects the other power supply terminal to the continuity checker terminal.
One probe is connected to the continuity checker terminal, and the iron tip is used as the other probe.
Conduct continuity check using the one probe and the iron tip.
A cordless soldering iron that features that. The cordless soldering iron according to claim 1, wherein a reed switch is used as the energization control switch. The cordless soldering iron according to claim 1 or 2, wherein the battery is provided with a constant voltage circuit. The cordless soldering iron according to any one of claims 1 to 3, wherein the battery is provided with an energization stop switch for stopping energization from the output terminal. The cordless soldering iron according to any one of claims 1 to 4, wherein the soldering iron main body is provided with a display unit indicating an energization state of the iron tip. The main body side input terminal is composed of one main body side input terminal and the other main body side input terminal.
The input terminal on the one side of the main body is the conductive material arranged on the outer peripheral surface of the iron tip or the outer peripheral surface of the iron tip via the heat-resistant electric insulating material.
The cordless soldering iron according to any one of claims 1 to 5, wherein the input terminal on the other main body side is provided on the soldering iron main body. Use the soldering iron body to attach the iron tip and the battery attached to the soldering iron body.
The soldering iron body has
The power supply terminal connected to the output terminal of the battery and
The charging terminal connected to the input terminal of the battery and
An energization control switch that opens and closes the energization circuit between the power supply terminal and the iron tip,
With the input terminal on the main unit connected to the charging terminal
Equipped with
By placing the soldering iron body on the holding table,
The energization control switch opens the energization circuit and
The input terminal on the main body side is connected to the charging unit,
A holding table used for a cordless soldering iron using a reed switch as the energization control switch .
A holding base provided with a magnet for operating the reed switch. The holding table according to claim 7 , wherein the magnet can be moved to a first position where the reed switch is operated and a second position where the reed switch is not operated. The magnet is used as an electromagnet.
The holding table according to claim 7 , further comprising a control unit that intermittently energizes the electromagnet. The main body side input terminal is composed of one main body side input terminal and the other main body side input terminal.
The input terminal on the one side of the main body is set as the outer peripheral surface of the iron tip of the iron tip.
The other main body side input terminal is provided on the soldering iron main body.
A mounting member on which the iron tip is mounted and
The pedestal that supports the above-mentioned placement member,
The cradle is provided with a pair of movable arms supported at one end.
The magnet is provided at the other end of the pair of movable arms.
The reed switch is operated by the magnet provided on one of the movable arms.
The magnet provided on the other movable arm is connected to the other main body side input terminal.
The holding table according to claim 7 , wherein the input terminal on the one side of the main body is connected to the above-mentioned mounting member. The holding table according to claim 7 , wherein a heat insulating cover for keeping at least the tip of the iron tip is provided.

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