KR101579035B1 - Apparatus for cleaning tip of soldering iron - Google Patents

Abstract

An apparatus (1) for cleaning a tip of a soldering iron according to the present invention comprises: a casing (100); a conductive rotation brush (132) which is maintained to be able to rotatable by maintaining an insulation state electrically on the casing (100); a motor (119) for driving the rotation brush (132); a motor power supply circuit (164) for supplying power to the motor (119); a detection line (172) which applies a voltage to the rotation brush (132) and also has an insulated grounding side; and a switch circuit (171) which is connected to the motor power supply circuit (164), and closes the motor power supply circuit (164) of the motor (119) by that an iron tip (21) of a soldering iron (2) comes in contact with the rotation brush (132) so that the detection line (172) is connected to the grounding side of the iron tip (21) for conduction.

Description

[0001] APPARATUS FOR CLEANING TIP OF SOLDERING IRON [0002]

The present invention relates to an apparatus for cleaning an indifferent point of a soldering iron.

The soldering iron cleaning apparatus of the soldering iron is a device for removing deposits such as excess soldering or flux attached to the soldering iron tip of the soldering iron operated by hand. In general, an iron tip cleaning apparatus places a metal web, which wipes the soldering iron tip of a soldering iron, on a base plate. The user rubs the tip on this web and removes the attachment. However, since the web is made of metal, a device configured to electrically connect the soldering iron and the web and perform a predetermined inspection has been proposed. For example, in an apparatus disclosed in Japanese Patent Application Laid-Open No. 2008-54057, a leak current from a soldering tip can be detected when a soldering tip and a web electrically connected to the leak testing device are connected.

On the other hand, a device configured to automatically drive the motor by detecting that the soldering iron is mounted at a predetermined position, employs a rotary brush or a cleaner driven by a motor instead of the web arranged on the base plate. For example, Japanese Laid-Open Utility Model Application No. Hei 02-32367 discloses a portable electronic device that includes a cylindrical pharyngoscope for inserting a soldering iron tip, a limit switch disposed inside the pharyngoscope, a motor driven by connection of a limit switch , And a cleaner driven by the motor and rotating. In the apparatus disclosed in Japanese Utility Model Application Laid-Open No. H02-32367, when a soldering tip is inserted to a predetermined stroke, the limit switch is connected to the soldering tip so that the motor is operated to rotate the cleaner. Japanese Patent No. 3153813 discloses an image forming apparatus having a cleaner driven by a motor, a casing accommodating a cleaner, a shutter opening and closing an opening of the casing, and a limit switch connected by using a movement when the shutter is opened and closed One device is disclosed. The shutter normally closes the opening, and is configured to open the opening by being pushed in by a soldering tip when cleaning.

However, in the configuration of Japanese Patent Application Laid-Open No. 2008-254057, only the leak current is detected and the brush can not be driven.

On the other hand, in the structure disclosed in Japanese Utility Model Laid-Open No. Hei 02-32367, since the soldering iron is detected on the basis of the stroke when the soldering iron is inserted into the soldering iron, in order to reliably operate the limit switch, It is necessary that the length is suitable for the installation position of the limit switch. Therefore, when the length of the soldering iron is different, it is necessary to prepare various types of soldering iron depending on the type of the soldering iron. As a result, the versatility becomes insufficient, and at the present time when the soldering iron is requested to be diversified, it becomes difficult to commercialize the soldering iron.

Further, in the structure of Japanese Patent No. 3153813, in order to drive the limit switch, it is necessary to open the shutter with the soldering iron tip. For this reason, there is a fear that the attachment is attached to the shutter and the operability of the shutter is deteriorated. In addition, there is a concern that the soldering tip is liable to be damaged because it is necessary to press the soldering tip on the shutter.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a solder iron tip cleaning method capable of automatically driving a motor for driving a rotary brush at the time of cleaning of a soldering iron and capable of automatically driving a motor without applying a load to a soldering tip, Device.

The present invention relates to an apparatus for cleaning a soldering tip of a soldering iron having a soldering tip, the apparatus comprising: a casing; a conductive rotating brush which is kept electrically insulated from the casing and rotatably held in the casing; A power supply circuit that supplies power to the motor; a detection line that is electrically connected to the rotary brush and applies a voltage to the rotary brush, the detection line being grounded; and a power supply circuit connected to the power supply circuit, And a switching means for closing the power supply circuit of the motor by electrically connecting the detection line to the ground side of the soldering tip by contacting the soldering tip of the soldering tip of the soldering iron with the rotating brush. In this aspect, the detection line is connected to the rotary brush. A voltage for inspection is applied to the detection line. However, the detection line is insulated from the ground side, and the rotary brush is also supported in an electrically insulated state. Therefore, even when a voltage is applied to the detection line, the detection line is not energized in a state in which the rotary brush does not contact the soldering tip and the insulation property of the rotary brush is maintained. On the other hand, when the soldering tip touches the rotating brush, the ground side of the soldering tip is electrically connected to the detecting line through the rotating brush. Therefore, an applied current flows through the detection line. Based on the applied current, the switch means closes the power supply circuit. Thus, in this embodiment, when the soldering tip touches the rotary brush, the detection line is energized and the switching means closes the power supply circuit by using the fact that the soldering iron tip of the soldering iron is grounded. As a result, the soldering iron can be detected irrespective of the length of the soldering iron, and the versatility of the soldering iron cleaning device can be enhanced. In addition, the power supply circuit can be closed only by bringing the soldering tip into contact with the rotary brush as in the prior art. Therefore, the motor can be driven without applying a large load to the soldering tip.

In a preferred embodiment of the present invention, there is further provided a detection circuit connected to the detection line for detecting a resistance value of the soldering tip, and a notification means connected to the detection circuit for notifying the detection result of the resistance value of the soldering tip Respectively. In this aspect, the resistance value of the soldering tip can be simultaneously detected at the time of cleaning the soldering tip, and the result can be notified so that the user can determine whether the soldering tip needs to be exchanged or not.

In a preferred embodiment of the present invention, the rotary brushes are juxtaposed in pairs, and include a wiring member for electrically connecting the detection lines to the respective rotary brushes. In this embodiment, cleaning can be carried out more reliably by the two pairs of rotating brushes provided in parallel. Further, since each of the two pairs of rotation brushes is connected to the detection line by the wiring member, the reliability of the connection structure for connecting the detection circuit and the rotary brush is improved.

In a preferred embodiment of the present invention, the cleaning apparatus further comprises a pair of gears, which are respectively installed in the two pairs of rotating brushes and are engaged with each other. The connection member includes a brake wire to be. In this embodiment, since the rotary shafts are gathered in the radial direction by the connecting member functioning as the brake wire, the backlash of the pair of gears and the rattling caused by the dimensional tolerance are absorbed at the time of rotation. As a result, each rotary shaft rotates naturally. Therefore, it is possible to reduce noise and vibration at the time of driving. In addition, since the rattling can be absorbed, the dimensional tolerance of each part can be set relatively large. For this reason, no precise dimensional accuracy is required, and manufacturing and assembly are facilitated.

In a preferred embodiment of the present invention, there is provided an apparatus for cleaning an indifferent portion, comprising: a mouth portion for forming an opening in the casing to face the rotary brush; and a brush portion provided in the mouth portion along the contour of the mouth portion, And further comprises an insulating guide for guiding. In this embodiment, the insulative tip guides the soldering tip with the rotary brush in a state that the insulation between the soldering iron and the casing is ensured by the insulating guide, and the operability is improved.

In a preferred embodiment of the present invention, an operation line for outputting an operation signal when the detection line and the ground side of the soldering iron are connected to each other, a light emitting element provided in the switch means, And a photocoupler having a light receiving element for receiving the light of the light emitting element and outputting a signal, wherein the switching means switches the power supply circuit so as to close the power supply circuit based on a signal output from the light receiving element of the photocoupler Consists of. In this embodiment, since the detection circuit and the switching means can be constituted based on a simple semiconductor element, the reliability of the device can be increased at a relatively low price.

As described above, according to the present invention, it is possible to detect the soldering iron without involving physical displacement of the switch means and to close the power supply circuit by energizing the soldering tip side of the soldering tip by using the soldering iron tip of a general soldering iron as the ground Therefore, it is possible to increase versatility and to exert a remarkable effect that a high reliability can be exerted without imposing a load on the soldering tip.

1 is a perspective view of an apparatus for cleaning an eyepiece according to an embodiment of the present invention.
FIG. 2 is a schematic plan view of the soldering iron cleaning apparatus, the soldering iron and the main body apparatus of FIG. 1; FIG.
3 is a cross-sectional view of the in-ear tip cleaning apparatus of FIG.
4 is an exploded perspective view showing a main part of the power transmission system of the in-ear tip cleaning apparatus of FIG.
FIG. 5 is an exploded perspective view showing a main part of the cleaning apparatus of FIG. 1; FIG.
FIG. 6 is an exploded perspective view showing a state in which the mouse cap is removed from the front box of the in-ear tip cleaning apparatus of FIG. 1;
7 is a perspective view showing an outer appearance of the mouth cap of the sold-tip cleaning apparatus of Fig. 1 from the back side. Fig.
8 is a wiring diagram of the in-ear tip cleaning apparatus of FIG.
Fig. 9 is an enlarged view showing the main part of Fig. 8; Fig.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.

First, referring to Figs. 1 to 3, the soldering iron cleaning apparatus 1 according to the present embodiment is configured to be used simultaneously with the main body apparatus 3 in parallel with the main body apparatus 3 of the soldering iron 2 have. The soldering iron 2 has a conductive soldering tip 21 electrically connected to the ground side. The cleaning apparatus 1 is an apparatus which is highly suitable as a soldering iron 2 mainly composed of a conductive material in which the soldering tip 21 is electrically grounded.

The cleaning apparatus (1) includes a casing (100). The casing (100) has a lower casing (110) and an upper casing (111). Each of the casings 110 and 111 is a cube having a substantially rectangular shape in a plan view extending in a longitudinal direction. Each of the casings 110 and 111 is formed in a box shape by combining sheet metal members.

On the front surface of the lower casing 110, a pair of LEDs 101 and 102 and a toggle switch 103 are provided. Of the pair of LEDs 101 and 102, one LED 101 emits green light and the other LED 102 constitutes a lamp emitting red light. These LEDs 101 and 102 are an example of notifying means for notifying the detection result of the resistance value of the soldering iron tip 21. The toggle switch 103 is used to switch the operation mode of the to-be-tip cleaning apparatus 1 to either the automatic operation mode or the manual operation mode described later. Further, a power source unit 104 is built in the rear portion of the lower casing 110 (see Fig. 3). The power supply unit 104 is provided with a power cord 105, and is configured to be connected to a power outlet on the power supply side to be powered. The power cord 4 of the main body apparatus 3 is connected to the socket 106 and the power cord 4 is connected to the main body apparatus 3 You can feed. A substrate 107 and a transformer 108 are arranged in this order from the front side on the bottom of the lower casing 110.

The upper casing 111 has a rear box 112 disposed on the rear end side in forward and backward directions, an inner box 113 disposed in front of the rear box, and a front box 114.

Referring to Figs. 1 and 3 to 5, the rear box 112 is a section for partitioning a machine room or the like for equipping the optional apparatus. Although not specifically shown, a known soldering iron holder is mounted on the side of the rear box 112, with the soldering iron 2 being laid down.

The inner box 113 has a partition plate 115 therein. The inner box 113 is partitioned by the rear motor chamber 16 and the entire gear chamber 117 by the partition plate 115.

A motor 119 is attached to the motor chamber 116 through a motor stand 118. The rotating shaft 120 of the motor 119 extends through the partition plate 115 and into the gear chamber 117 at the front.

In the gear chamber 117, a driving gear 121 is disposed. The driving gear 121 is fixed to the rotating shaft 120 of the motor 119. The drive gear 121 meshes with the first spur gear 122 disposed in the gear chamber 117. The first spur gear 122 meshes with the second spur gear 123 disposed on the side thereof. The spur gears 122 and 123 are arranged side by side on the front face side of the partition plate 115 and are engaged with each other. Therefore, when the motor 119 is driven, the driving gear 121 is driven in a predetermined direction (counterclockwise as viewed from the front). Therefore, the first spur gear 122 meshed with the drive gear 121 rotates in the reverse direction (clockwise from the front), while the second spur gear 122 meshes with the first spur gear 122, The gear 123 is driven in the same direction as the driving gear 121. [

Each of the spur gears 122 and 123 has a metal rotary shaft 124 concentrically. Each rotary shaft 124 is rotatably supported by the partition plate 115 in a state of being electrically insulated from the partition plate 115. The spur gears 122 and 123 are electrically insulated from the casing 100 (the inner box 113. The rotating shaft 124 is connected to the small diameter portion 125 and the small diameter portion 125 Diameter connecting sleeves 128 which are continuous with the bosses of the spur gears 122 and 123. The small diameter portion 125 is press-fitted into the inner periphery of the boss portion of the spur gears 122 and 123. The boss portion and the bearing 130 An annular gap S is formed between the rear end face and the rear end face.

Between the both rotary shafts 124, there is disposed a brake wire 126 which enters from the lower side into the annular gap S. Both ends of the brake wire 126 are insulated by a tube. A truss bolt 127 projecting forward from both outer sides of the spur gears 122 and 123 is attached to the partition plate 115 of the inner box 113 to support both ends of the brake wire 126 . On the outer circumference of the truss bolt 127, a spacer 140 is disposed. The truss bolt 127 protrudes forward from the partition plate 115 by a length defined by the entire length of the spacer 140. The middle portion of the brake wire 126 is positioned on the side of the rotation shaft 124 in the annular gap S so that both ends of the brake wire 126 (the portion to which the tube is fixed) Diameter connection sleeve 128 at the front. Accordingly, the brake wire 126 elastically presses the spur gears 122, 123 upward through the connecting sleeve 128. [ When the brake wire 126 is attached to each of the connecting sleeves 128 by the upward elastic urging force, the two rotating shafts 124 connected to the connecting sleeve 128 are pulled to each other, Backlash or rattling during assembly is absorbed. The brake wire 126 is an example of a wiring member for electrically connecting a detection line 172, which will be described later, with each rotary brush.

A bearing 130 is mounted on the front end wall 129 of the inner box 113. [ The bearing 130 is made of an insulating material and has a sleeve portion receiving the outer circumference of the coupling sleeve 128 of the rotary shaft 124 and a flange portion integrally formed on the front end of the sleeve portion. The sleeve portion extends rearward from the front end wall 129 to the vicinity of the boss portion of the corresponding spur gear 122 or 123 and supports the outer periphery of the coupling sleeve 128 while forming the annular gap S . The flange portion is in contact with the front surface of the front end wall 129. A snap ring (not shown) is fitted to the sleeve portion. The snap ring is fixed to the back surface of the front end wall 129. The bearing 130 is firmly fixed to the front end wall 129 by sandwiching the front end wall 129 between the snap ring and the flange portion. The bearing 130 thereby rotatably supports the connecting sleeve 128 in a state of restricting the axial movement of the connecting sleeve 128 and electrically isolating the connecting sleeve 128.

The connecting sleeve 128 of the rotating shaft 124 penetrates the front end wall 129 through the bearing 130 and protrudes forward of the front end wall 129. A fixing screw 131 is provided in front of the bearing 130 of the connecting sleeve 128. The fixing screw 131 is for fixing the rotating brush 132 mounted on the inner peripheral portion of the leading end of the connecting sleeve 128.

One rotation brush 132 is provided for each of the pair of connection sleeves 128, and the pair of rotation brushes 132 are arranged side by side in pairs. In another embodiment, the rotary brushes 132 may be arranged vertically. Each of the rotary brushes 132 is embodied as a cylindrical mother body. Each of the stranded bodies is fixed to the outer periphery of the shaft portion 133. The rotary brush 132, and the shaft portion 133 are conductive members formed of a metal having high corrosion resistance.

In the illustrated example, the rotary brush 132 is set to have the same diameter as the spur gears 122 and 123, and is configured to slightly mesh with each other. The rear end of the shaft portion 133 is inserted into the coupling sleeve 128 and connected to the corresponding rotary shaft 124 through the coupling sleeve 128. [ Accordingly, the rotary brush 132 and the rotary shaft 124 are configured to be mechanically and electrically connected. The shaft portion 133 connected to the rotary shaft 124 via the rotary shaft 124 and the connecting sleeve 128 which is a part of the rotary shaft 124 is connected to the corresponding spur gear 122, And constitutes a shaft member 134 which is mechanically and electrically connected to the corresponding rotary brush 132. [

As shown in Fig. 5, a pair of side plates 135 is provided on the side of the inner box 113. As shown in Fig. Each side plate 135 shields the side of the inner box with the top plate 136. A power switch 137 is attached to one side plate 135.

Each of the side plates 135 has a guide portion 138 in which the upper portion of the front portion is cut away. Each guide portion 138 extends from the front end wall 129 to the front end portion of the lower casing 110. Each guide portion 138 constitutes a guide member of the front box 114, which will be described later, in a state in which the rotary brushes 132 are opened in the upper portion.

5 and 6, the front box 114 is a box-shaped sheet metal member which is inserted back and forth along the inner surface of the guide portion 138. As shown in Fig. The front box 114 includes a rectangular bottom plate 141 viewed in plan view, a pair of side plates 142 extending from both sides of the bottom plate 141 and a rear plate 144 extending from the rear end edge of the bottom plate 141. [ And a front end plate 144 extending from the front end edge of the bottom plate 141 as one body.

In the side plate 142, a nut hole 145 is formed in the vicinity of the front lower portion. An insertion hole 139 is formed in the guide portion 138 at the front end portion. The nut hole 145 is opposed to the insertion hole 139 when the front box 114 is inserted between the guide portions 138. [ The front box 114 is fixed to the guide portion 138 by screwing the cosmetic bolt 146 to the nut hole 145 through the insertion hole 139. [ In the embodiment shown in the drawings, a horizontal edge 148 is provided on the upper edge of each side plate 142. The sun visor 148 extends in the width direction by a predetermined length and also opens the upper central portion of the front box 114 back and forth. Therefore, when the front box 114 is attached between the guide portions 138, the clearance between the awning 148 and 148 opens the opposing portions of the pair of the rotating brushes 132 and 132.

The rear end plate 143 is a structure that forms the backing plate 147 at the bottom of the front box 114 together with the bottom plate 141, the side plate 142 and the front end plate 144. The rear end plate 143 is set low so as to avoid interference with the rotary brush 132 at the time of mounting, and the rear portion of the front box 114 is widely opened.

The front plate 144 is a structure that extends to the upper portion of the side plate 142 and covers the entire front box 114. The upper portion of the front plate 144 forms a mouse portion 149 which is recessed so that the center thereof curves downward. The mouth portion 149 communicates with the gap between the shoulders 148 and 148 and defines an opening 155 for inserting the soldering iron 2 into the front box 114. The soldering iron 2 can be directed to the rolling parts of the rotary brushes 132 through the openings 155. A mouse cap 150 is attached to the mouse unit 149. The mouse cap 150 is an example of an insulative guide for guiding the soldering tip 21 to the rotary brush 132.

5, 6, and 7, the mouse cap 150 is made of a heat-resistant resin having high insulating properties. The mouse cap 150 includes a front end portion 151 which is joined to the front surface of the front end plate 144 and a rear end portion 152 which is disposed at the rear portion of the front end portion 151 and joined to the rear surface of the front end plate 144, And a connecting portion 153 for connecting the upper edge of the front end 151 and the rear end 152 to each other. The upper edges of the front end portion 151 and the rear end portion 152 are curved members of C-shape along the contour of the mouth portion 149, respectively. Further, the connection portion 153 smoothly connects the front end portion 151 and the end portion 152 in accordance with the outline. The cross section of the mouse cap 150 shows a channel shape in which the front end portion 151, the connection portion 153, and the end portion 152 are opened downward as a whole. The mouse cap 150 is resiliently fixed along the outer edge of the mouth portion 149 to cover the mouth portion 149. [ A rib 154 is integrally provided at an upper portion of the connecting portion 153. The rib 154 is curved downward along the upper surface of the connection portion 153.

1, the rib 154 of the mouse cap 150 is a guide member for supporting and guiding the lower portion of the soldering iron 2 when the soldering iron 2 is cleaned. The user inserts the soldering iron 2 between the rotating brushes 132 and 132 from the opening 155 defined by the mouth 149 together with the flange 148 and moves the soldering tip 21 to the rib 154 The cleaning operation can be performed.

As shown in Fig. 2, the soldering iron 2 has the soldering iron tip 21 and a heater 22 accommodated in the soldering iron tip 21. The soldering tip 21 is connected to the grounding line 24 of the main body apparatus 3 through the grounding line 23. The heater 22 is connected to the feeder line 31 of the main body apparatus 3. [

The main body apparatus 3 is provided with a power supply unit 32 that supplies power to the heater 22 from the power supply line 31. [ The power supply unit 32 includes a power supply device and a control device (not shown). The power supply device has the power cord (4). The power cord 4 is connected to the receptacle 106 of the cleaning device 1. Further, the control unit of the power supply unit 32 controls the power supply from the power supply unit.

Next, with reference to Figs. 8 and 9, the circuit configuration of the soldering iron cleaning apparatus 1 will be described. Here, as shown in Fig. 8, the power source of the present embodiment is a single-phase three-wire wiring, and among the three pairs of wirings in the drawing, the central wiring is a ground line.

The power supply unit 104 is wired with a power supply line 160 connected to the power supply cord 105. The power supply line 160 branches from the inside of the power supply unit 104 to the side of the soldering iron 2 and the side of the soldering iron cleaning device 1. The side of the soldering iron 2 of the feeder line 160 is connected to the outlet 106. A feeder cord 161 is connected to the feeder line cleaning device 1 side of the feeder line 160.

The feed code 161 is connected to the primary side of the transformer 108. [ On the upstream side of the transformer 108 of the feeder code 161, the feeder lines 162 and 163 branch off. The feeder lines 162 and 163 are connected to a motor 119 and constitute a motor feed circuit 164 together with the power source unit 104 and the like. The motor feed circuit 164 is an example of a feed circuit that feeds the motor 119. One of the feeder lines 162 is connected to the a contact of the toggle switch 103. The a contact is closed when the toggle switch 103 is switched to the manual operation mode. Therefore, when the toggle switch 103 is switched to the manual operation mode when the power switch 137 (see Figs. 1 and 5) is connected, the motor 119 always rotates. 8, the power switch 137 may be provided on the power feed line 160 of the power source unit 104 to turn on / off the power feed on the soldering iron 2 side. Alternatively, (16) so that the soldering iron (2) side is always powered.

On the other hand, the secondary side of the transformer 108 is connected to the substrate 107. On the secondary side of the transformer 108, a voltage of, for example, 9 V is applied to the substrate 107.

The substrate 107 is provided with a plurality of electrical components. The substrate 107 is provided with a detection circuit 170 and a switch circuit 171 for detecting the resistance value of the soldering iron 2. The switch circuit 171 includes power supply contacts a, T1 (see Fig. 9). One of the feeder lines 162 is connected in parallel with the a contact of the toggle switch 103 to the power supply contacts T1 and T2 (see Fig. 9) of the substrate 107. [ The switch circuit 171 exercises a switch function for turning on / off the motor feeder circuit 164 on the primary side based on the output of the detection circuit 170 on the secondary side.

Next, the details of each of the circuits 170 and 171 will be described.

First, to the detection circuit 170, a detection line 172 is connected. The detection line 172 is electrically connected to the brake wire 126. A predetermined voltage (for example, a voltage of 25 mV) is applied to the detection line 172 of the detection circuit 170 and the brake wire 126 and the pair of rotation shafts 124 are electrically insulated by the bearing 130, the circuit including the detection line 172 is kept open. Therefore, the applied current does not flow in the detection line 172. On the other hand, if the soldering iron tip 21 of the soldering iron 2 is brought into contact with the rotating brush 132, the detecting line 172 moves from the brake wire 126 to the rotating shaft 124 and the rotating brush 132 And is electrically connected to the soldering tip (21) through the soldering tip (21) and connected to the grounding line (23) of the soldering tip (21). Thus, the detection circuit 170 detects that the soldering tip 2 of the soldering iron 2 is in contact with the soldering tip 2, and that the soldering tip 21 ) To the ground line 23 can be detected.

The detection circuit 170 is provided with an operation line 174. The detection circuit 170 is configured to output an output signal to the switch circuit 171 when a current flows through the detection line 172. [ Here, in the present embodiment, when the resistance value detected by the detection circuit 170 is equal to or less than a predetermined drive resistance value (for example, 70?) When a current flows through the detection line 172, 174, respectively. The configuration using the drive resistance value can serve as a safety measure. For example, even if an object (for example, a finger of a user) erroneously contacts the rotary brush 132 and an applied current flows to the detection line 172, When it is out of the assumed range, no current flows through the operation line 174, and the motor 119 is also not driven. For example, since the human skin resistance is 5000 OMEGA, even if a person accidentally touches the rotary brush 132, the rotary brush 132 remains in a stopped state, and safety is secured. In addition, since the applied voltage is low, there is no possibility of affecting the human body.

The detection circuit 170 turns on only one of the LEDs 101 when the resistance value of the soldering iron 2 is less than a predetermined set value (for example, 2 ohms) And only the other LED 102 is turned on. Unnecessary electric charges such as leakage current and static electricity from the heater 22 are supplied from the soldering tip 21 to the earth terminal of the AC outlet through the ground line 23 when the resistance value is low (when the LED 101 is lit) The adverse effect on the device can be avoided. On the other hand, when the resistance value is high (when the LED 102 is lit), the soldering tip 21 is worn and the resistance between the soldering tip 21 and the ground becomes high, indicating that the unnecessary charge can not be sufficiently discharged to the ground. Based on the notification of the LEDs 101 and 102, the user judges whether or not the soldering tip 21 is appropriate, and exchanges the soldering iron with a new one if necessary.

9, the switch circuit 171 is an example of a switch means for closing the motor feed circuit 164 by connecting the detection line 172 to the ground side of the soldering tip 21 and energizing it. The switch circuit 171 is composed of an electronic component including a photocoupler 175 and a bidirectional thyristor (triac) 176.

The photocoupler 175 includes a light emitting element 177 and a light receiving element 178. To the light emitting element 177, an operation line 174 of the detection circuit 170 is connected. When a current flows through the operation line 174, the light emitting element 177 emits light, and the light receiving element 178 is driven. The light receiving element 178 of the photocoupler 175 is connected to the bidirectional thyristor 176.

In the illustrated example, the bidirectional thyristor 176 is connected to the power supply a contacts T1 and T2 of the switch circuit 171. [ When a signal is output from the light-receiving element 178, the bidirectional thyristor 176 connects the power supply a contacts T1 and T2. Thus, the feeder line 162 is conducted. As a result, in the present embodiment, when the power switch 137 is turned ON and the toggle switch 103 is switched to the automatic operation mode, the soldering iron tip 2 of the soldering iron 2 is rotated by the rotating brushes 132, The motor 119 is automatically turned on and operated to rotate the rotary brushes 132 and 132. In this case, Further, the bidirectional thyristor 176 is not an essential element. For example, when a direct current can be used, it may be omitted. In this case, the light receiving element 178 of the photocoupler 175 may be connected to the direct power supply a contacts T1 and T2, and the photocoupler 175 may constitute a switch circuit (switching means).

The power supply cord 4 of the main body apparatus 3 is connected to the soldering tip 2 of the soldering iron 2 by the soldering iron 2 and the soldering iron 2, To the outlet 106 of the battery pack 100 so as to be ready for power supply.

The main body apparatus 3 heats the heater 22 of the soldering iron 2 under the control of the power supply unit 32. As a result, the soldering tip 21 is heated so that the soldering can be performed by melting the soldering. The user grasps the soldering iron 2 and performs the soldering work while supplying the soldering tip 21 with soldering.

By repeating the soldering work, surplus solder, flux or the like adheres to the soldering iron 2, and the wettability and the like of the soldering iron tip 21 change. Here, the user appropriately cleans the soldering iron tip 21 with the soldering iron cleaning device 1. In this cleaning operation, the soldering tip 21 is moved to the front box 114 of the soldering iron cleaning apparatus 1 and inserted into the rotary brush 132 from between the flanks 148, 148.

Prior to this cleaning operation, the user can switch the operation mode of the toothed cleaning apparatus 1 to the automatic operation mode and the manual operation mode by operating the toggle switch 103.

When the user switches the toggle switch 103 to the manual operation mode, one motor feed circuit 164 is closed, so that the motor 119 always rotates. Therefore, even when a soldering iron having a soldering iron tip made of ceramic is used, cleaning of the soldering tip can be performed.

On the other hand, when the toggle switch 103 is set to the automatic operation mode and the rotating brush 132 is not in contact with the soldering tip 21 and the insulating property of the rotating brush 132 is maintained, No electric power is supplied to the motor 119 and the rotating brush 132 is kept stationary since the a contact of the switching circuit 103 and the switch circuit 171 is open. A predetermined voltage is applied to the detection line 172. A brake wire 126 and a pair of rotary shafts 124 pulled by the brake wire 126 are electrically insulated by the bearing 130 The circuit including this detection line 172 is kept open.

In the automatic operation mode, when the soldering tip 21 comes into contact with the wire body of the rotating brush 132, the detecting line 172 moves from the brake wire 126 through the rotating shaft 124 and the rotating brush 132, (21), and is connected to the ground line (23) of the soldering tip (21). Thus, an applied current flows through the detection line 172, and the detection circuit 170 can detect the resistance value of the soldering iron 2. When the resistance value of the soldering iron 2 is less than the set value, the detection circuit 170 turns on one of the LEDs 101. [ When the resistance value of the soldering iron 2 is equal to or larger than the set value, the detection circuit 170 lights the other LED 102. [

The detection circuit 170 determines whether or not the detected resistance value is equal to or lower than the drive resistance value (for example, 70?), In parallel with the output to the LED 101 or the LED 102. [ When the resistance value exceeds the drive resistance value, the detection circuit 170 does not drive the operation line 174. For this reason, the motor 119 is also kept stationary. On the other hand, when the resistance value is equal to or lower than the drive resistance value, the detection circuit 170 energizes the operation line 174 and emits the light emitting element 177 of the photocoupler 175 provided in the switch circuit 171. As a result, the light receiving element 178 of the photocoupler 175 closes the power supply a contacts T1 and T2. Thereby, the motor feed circuit 164 of the primary side is closed, and the motor 119 is fed with power. When the motor 119 is supplied with electric power, the torque is transmitted from the drive gear 121 to the first spur gear 122 and the second spur gear 123 in this order, and the spur gears 122 and 123, The rotary brushes 132 rotate in opposite directions to each other through the connecting sleeve 128 of the rotary shaft 124 connected to the gears 122, As a result, when the soldering iron 2 is brought into contact with the rotary brush 132, the rotary brush 132 rotates and the adherend is removed.

While the rotary brush 132 is rotating, the user places the soldering iron 2 on the mouse cap 150 of the front box 114 and appropriately rotates the soldering iron 2 around the axis, Can be removed. The removed deposit is collected in the receiving tray 147 of the front box 114. When the deposit is sufficiently removed, the user may remove the soldering iron 2 from the front box 114, perform the soldering operation again, or turn off the power to finish the soldering work.

When the soldering iron tip 21 of the soldering iron 2 is detached from the rotary brush 132, the circuit including the detection line 172 is opened and energization of the detection line 172 is stopped. As a result, the detection circuit 170 stops energizing the operation line 174. Therefore, the light emitting element 177 of the photocoupler 175 provided in the switch circuit 171 is stopped, and the light receiving element 178 also stops outputting. As a result, the bidirectional thyristor 176 of the switch circuit 171 opens the power supply contact points T1 and T2. Therefore, the motor feed circuit 164 is opened, and the feeding is stopped. Therefore, the motor 119 is stopped and the rotary brush 132 is also stopped.

In the cleaning operation, the deposit collected in the receiving tray 147 of the front box 114 appropriately removes the front box 114 to be removed.

As described above, according to the present embodiment, the detection line 172 to which the inspection voltage (for example, 25 mV) is applied is provided, and this detection line 172 is connected to the rotary brush 132 . Here, the detection line 172 is insulated from the ground side, and the rotary brush 132 is also supported in an electrically insulated state. Therefore, even when a voltage is applied to the detection line 172, the detection line 172 is not energized in a state in which the rotary brush 132 does not contact the soldering tip 21 and the insulation property of the rotary brush is maintained. Therefore, the motor 119 is stopped, and the rotary brush 132 is kept stationary. On the other hand, when the soldering tip 21 comes into contact with the rotating brush 132, the grounding line 23 of the soldering iron tip 21 and the grounding line 24 of the main body apparatus 3, (Not shown). Therefore, an applied current flows through the detection line 172. By this applied current, the switch circuit 171 closes the motor feed circuit 164. As described above, in this embodiment, when the soldering iron tip 21 of the soldering iron 2 is grounded, the detecting line 172 is energized when the soldering iron tip 21 touches the rotating brush 132, The switch circuit 171 closes the motor feed circuit 164. As a result, the soldering iron 2 can be detected irrespective of the length of the soldering iron 2. Therefore, it is possible to enhance the versatility of the cleaning apparatus 1. Further, the motor feed circuit 164 can be closed only by bringing the iron tip 21 into contact with the rotary brush 132 as in the past. Therefore, the motor 119 can be driven without applying a large load to the soldering iron tip 21. Further, since the casing 100 is made of metal, the durability is improved, and the maintenance performance, such as the treatment of adherends, is also improved.

The detection circuit 170 is connected to the detection line 172 and detects the resistance value of the soldering tip 21. The detection circuit 170 is connected to the detection circuit 170 and detects the resistance value of the soldering tip 21 And LEDs 101 and 102 as notification means for notifying the detection result. Specifically, when a pair of lamps (LED 101 and LED 102) is provided and the resistance value of the soldering iron tip 21 of the soldering iron 2 is less than a predetermined value (for example, 2?), (LED 101) alone is turned on, and notifies that the soldering tip 21 has a very suitable resistance value. When the resistance value of the soldering tip is not less than the predetermined value, only the other lamp (LED 102) is turned on to notify that the soldering tip 21 is old. Therefore, in the present embodiment, the resistance value of the soldering iron tip 21 can be detected at the same time during the cleaning of the soldering iron tip tip 21, and the result can be notified so that the user can determine whether or not the soldering iron tip 21 should be replaced Lt; / RTI > As a notification means, a liquid crystal panel may be employed instead of an LED or the like so that the detected resistance value can be displayed.

In the present embodiment, the rotary brushes 132 are provided in pairs and are provided with a brake wire 126 for electrically connecting the detection line 172 to each rotary brush 132. [ For this reason, in the present embodiment, by providing two pairs of rotating brushes 132, cleaning can be performed more reliably. Since the detection line 172 and the rotary brush 132 are connected to the brake wire 126, the reliability of connecting the detection circuit 170 and the rotary brush 132 is enhanced.

Further, the present embodiment further includes a pair of gears 122, 123 which are respectively provided in the pair of rotating brushes 132 and which mesh with each other. The brake wire 126 is connected to the pair of gears 122, 123 in the direction in which they engage with each other. Therefore, in the present embodiment, since the rotary shafts 124 are gathered in the radial direction by the brake wires 126, the rattling caused by the backlash of the pair of gears, dimensional tolerances, etc. is absorbed at the time of rotation, (124) rotates naturally. Therefore, it is possible to reduce noise and vibration at the time of driving. In addition, since the rattling can be absorbed, the dimensional tolerance of each part can be set relatively large. For this reason, no precise dimensional accuracy is required, and manufacturing and assembly are facilitated.

In this embodiment, a mouse unit 149 for forming an opening in the casing 100 for rotating the rotary brush 132 to the soldering iron 2 and a mouse unit 149 And a mouth cap 150 for guiding the soldering tip 21 to the rotary brush 132. [ Therefore, in the present embodiment, the mouth cap 150 makes it easy to lead the soldering tip 21 to the rotating brush 132 in a state where the insulation between the soldering iron 2 and the casing 100 is ensured, . In particular, since the ribs 154 are provided on the mouse cap 150, positioning is facilitated and operability is improved.

In this embodiment, an operation line 174 for outputting an operation signal when the detection line 172 and the ground side of the soldering iron 2 are connected, and a control circuit 174 provided in the switch circuit 171, And a photocoupler 175 having a light emitting element 177 for emitting light by the light emitting element 177 and a light receiving element 178 for receiving the light of the light emitting element 177 and outputting a signal, And the motor feed circuit 164 is closed on the basis of the signal output from the light receiving element 178 of the coupler 175. Therefore, in the present embodiment, the detection circuit 170 and the switch circuit 171 can be formed based on a simple semiconductor device, and the reliability of the device can be improved at a relatively low cost.

It is needless to say that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

Claims (6)

An apparatus for cleaning an indifferent of a soldering iron having a soldering tip,
A casing,
An electrically conductive rotating brush which is kept electrically insulated from the casing and is rotatably held in the casing;
A motor for driving the rotary brush,
A power feeding circuit for feeding the motor,
A sensing line electrically connected to the rotary brush to apply a voltage to the rotary brush and having a ground side insulated,
And switching means connected to the power supply circuit and closing the power supply circuit of the motor by connecting the detection line to the ground side of the soldering tip by energizing the soldering tip of the soldering iron to contact the rotary brush Of the soldering iron. The method according to claim 1,
A detection circuit connected to the detection line for detecting a resistance value of the soldering tip;
Further comprising notifying means connected to said detecting circuit for notifying a detection result of the resistance value of said soldering tip. The method according to claim 1,
Wherein the rotary brushes are juxtaposed in pairs,
And a wiring member for electrically connecting the detection line to each of the rotary brushes. The method of claim 3,
Further comprising a pair of gears which are respectively installed in the pair of rotating brushes and are engaged with each other,
Wherein the wiring member is a brake wire for collecting the pair of gears in a direction in which the pair of gears are engaged with each other. The method according to claim 1,
A mouth portion for forming an opening in the casing to face the rotary brush on the soldering iron;
Further comprising an insulative guide provided in the mouth part along the contour of the mouth part to guide the soldering tip to the rotary brush. The method according to any one of claims 1 to 5,
An operation line for outputting an operation signal when the detection line and the ground side of the soldering iron are connected,
Further comprising an optocoupler provided in the switch means and having a light emitting element emitting light by the operation signal and a light receiving element receiving light of the light emitting element and outputting a signal, And the power feed circuit is closed based on a signal output from the light receiving element.

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