JP5248635B2 - Soldering iron - Google Patents

Description

  The present invention relates to a soldering iron, and more particularly to a soldering iron whose tip is replaceable.

Soldering iron tips are widely distributed in the form of heaters, copper with excellent thermal conductivity around the heaters, and iron plating on the outer surface. The iron plating used as the outer surface is for the purpose of preventing so-called solder erosion, in which copper is melted into wet solder (molten solder). The iron plating solder biting speed is about 1/10 of the copper solder biting speed.

  By the way, even if it is in the iron plating in this kind of soldering iron, although it is not as much as the copper mentioned above, it has the property of being eaten by wet solder. Therefore, in this type of soldering iron, as the soldering operation is performed, the iron plating gradually melts into the wet solder, and the copper inside is eventually exposed. It was. When copper was exposed in this way, the copper was immediately eaten away by the solder, making it useless as a tip. In other words, the soldering iron as a whole was not useful. In order to solve such problems, a soldering iron is provided in which the tip is replaceable in a cartridge type (see Patent Document 1).

Utility Model Registration No. 3001893

  However, in the soldering iron configured so that the tip can be replaced, it is necessary to grasp and pull the tip with the hand when removing the tip from the main body of the tip. Therefore, when the tip is lowered to a temperature close to room temperature, the tip can be easily grasped by hand, but when the tip is hot, the tip The tip could not be removed by hand, and it could not be replaced unless the tip had cooled down.

  The present invention has been made in view of such circumstances, and even when the tip is hot at the time of soldering work or the like, it is easily possible without waiting for the tip to cool down. The object is to provide a soldering iron whose tip is replaceable.

In order to solve the above problems, the present invention provides a soldering iron having the following means.
That is, the invention of the soldering iron according to claim 1 includes a tip having a tip that can melt the solder and a male terminal at the base end, and a female terminal that can be engaged with the male terminal. A soldering iron including a built-in iron body integrated with the tip by engaging the male terminal and the female terminal. The outer periphery of the tip has heat insulation. In addition, a grip that covers the vicinity of the proximal end of the tip is provided, and a plurality of projecting portions that project inward inside the grip are provided only at a part of the grip in the axial direction. In addition, the inner peripheral surface of the projecting portion is in close contact with the outer peripheral surface in the vicinity of the proximal end of the tip, and an air layer is formed between the projecting portions.

In the soldering iron according to the present invention, when the grip is pulled or pushed out by any member, the male terminal and the female terminal in which the iron tip and the iron body are integrated are attached. It can be canceled. Furthermore, since the grip has heat insulation and is provided so as to cover the vicinity of the proximal end of the tip, for example, even when the tip is hot when using this soldering iron, The heat at the tip of the tip is not transmitted to the grip, and the operator can grip the grip with bare hands. Therefore, even when the soldering iron is used, the operator can remove the iron tip from the iron body with bare hands.
Further, a plurality of projecting portions projecting inward inside are provided inside the grip, and the inner peripheral surface of the projecting portion is in close contact with the outer peripheral surface in the vicinity of the proximal end of the tip. Since the air layer is formed in the air, the air in the air layer has a heat insulating property, so that the heat of the tip body is hardly transmitted to the grip.

  A soldering iron according to a second aspect is the soldering iron according to the first aspect, wherein a plurality of grooves extending in the circumferential direction and arranged in the axial direction are formed on the outer peripheral surface of the grip. It is characterized by that.

  In the soldering iron according to the present invention, when the operator grips the grip by the hand, the outer peripheral surface of the grip is formed with a plurality of grooves extending in the circumferential direction and arranged in the axial direction. The operator's hand can be prevented from slipping from the grip.

  The invention of the soldering iron according to claim 3 is the soldering iron according to claim 1 or 2, wherein the grip has a fitting hole into which a protrusion provided on the tip is fitted. It is formed.

  In the soldering iron according to the present invention, the grip and the tip are connected by fitting the protrusion provided on the tip into the fitting hole of the grip, so that the grip is pulled. Sometimes, the grip can be prevented from coming off the tip, and the tip can be reliably removed from the tip body.

  According to the soldering iron of the present invention, when replacing the soldering iron tip, the tip is cooled even when the tip is hot during soldering work or the like. The tip can be easily replaced without waiting.

1 is a perspective view of a soldering iron according to the present invention. It is a disassembled perspective view of a tip. They are a side sectional view and a tip enlarged sectional view of a tip. It is the side view from the length direction of a grip part, and the side view from a cross-sectional direction. FIG. 2 is an exploded perspective view of the soldering iron of FIG. 1. FIG. 2 is an exploded perspective view of the soldering iron of FIG. 1. FIG. 2 is a cutaway side view and a partially enlarged side view of the soldering iron of FIG. 1. It is a figure which shows removal of the tip from a main body of a step in steps.

  Hereinafter, embodiments of the soldering iron according to the present invention will be described. 1 is a perspective view of the soldering iron according to the present invention, FIG. 2 is an exploded perspective view of the tip, FIG. 3 is a side sectional view and an enlarged sectional view of the tip, and FIG. FIG. 5 is an exploded perspective view of the soldering iron of FIG. 1, FIG. 6 is an exploded perspective view of the soldering iron of FIG. 1, and FIG. It is the notch side view and partially expanded side view of a soldering iron.

In FIG. 1, reference numeral 1 denotes a soldering iron according to this embodiment.
The soldering iron 1 is used for the purpose of melting the solder at its tip 10a and attaching the molten solder to a desired location or removing the attached solder. The soldering iron 1 is roughly divided so as to be integrated with the tip 10 on the side of the base end 10b of the tip 10 whose tip 10a is meltable. A trowel main body 50 is included. A cord armor 80 made of rubber is attached to the base end 50b of the iron body 50. The cord armor 80 is provided with a cord 81 that can be connected to a power source. Hereinafter, the term “tip” simply refers to the end of the member in the direction of the tip of the tip 10a, and the term “proximal end” refers to the direction of the member in the direction of the base of the iron body 50b. Means the end.

Next, the tip 10 of the soldering iron 1 will be described first.
As shown in FIG. 2, the tip 10 is roughly divided into a tip body 11, a heating device 20 (see FIG. 3B) built in the tip body 11, and the iron. It is comprised from the grip part 27 provided so that the vicinity of the base end 11b of the front main body 11 might be coat | covered.

As shown in FIG. 3 (a) and FIG. 3 (b) in which the range A in FIG. 3 (a) is enlarged, the tip main body 11 has a tip portion 12 formed in a conical shape having a hollow inside. And the cylindrical portion 13 provided by connecting the open ends of the tip portion 12 are integrated. The tip 12 is the tip 10 a of the tip 10. Here, the tip body 11 is made of iron, and the inside of the tip 11a is filled with a conductive portion 14 made of copper having excellent thermal conductivity. A hollow portion 15 that is cut out in a columnar shape is formed inside the conductive portion 14, and a heater 21 and a temperature sensor 22 that are formed in a coil shape are incorporated in the hollow portion 15. Insulating ceramics is filled so as to fill the gap. The heater 21 and the temperature sensor 22 constitute the heating device 20.
That is, the heater 21 is provided for the purpose of heating the tip 10 a of the tip 10, and the temperature sensor 22 is for measuring the temperature of the tip 10 a of the tip 10. It is provided as.

  A connection lead wire 23 is connected to each of the heater 21 and the temperature sensor 22. The connection lead wires 23 are arranged for the purpose of supplying electric power to the heater 21 and transmitting a measurement signal from the temperature sensor 22, and a total of four connection leads, two for each other. A wire 23 is connected to each of the heater 21 and the temperature sensor 22. The tip 10 is provided with a spring member 31 in contact with the tip body 11. The spring member 31 is in contact with a metal band 85, which will be described later. The spring member 31 is made of a conductive metal, and has one end connected to the tip body 11 and the other end connected to the metal band 85. It is formed in a letter shape. The spring member 31 is pressed against the metal band 85 so that the central portion of the spring member 31 formed in a substantially square shape is deformed. As a result, the spring member 31 has return elasticity that returns to its shape. The grip portion 27 and the terminal cover 30 are urged toward the inner peripheral surface of the outer case 51 (the iron body 50) by this elastic force. The electric charge accumulated in the tip body 11 is grounded by the spring member 31, the metal band 85, and the ground wire 87.

  At the end of the connection lead wire 23, a male terminal 24, which is a connection terminal made of an elongated plate made of metal, is provided. Specifically, one end of the male terminal 24 is overlapped with the end of the connection lead wire 23 from which the coating is removed and the conductive wire is exposed, and then the crimping portion 25 is formed by caulking each other. . In this way, the end of the connection lead wire 23 and the male terminal are connected. The male terminal 24 is provided so as to be parallel to the axial direction of the tip 10. By being provided in this manner, it can be suitably fitted to a female terminal 61 described later. That is, by this fitting, they are engaged with each other. Reference numeral 26 is fixed to the tip body 11 and separates the connection lead wire 23 and the male terminal 24 from each other, and the male terminal 24 is arranged in the axial direction of the tip 10. It is the 1st intervention member supported in order to make it project with a good posture.

  And the grip part 27 is provided in the tip main body 11 with which the heating apparatus 20 was incorporated. The grip portion 27 is configured by assembling a substantially cylindrical shape made of a resin excellent in electrical insulation and heat resistance. That is, the grip portion 27 has a cross-section in which a flat portion 27a is formed such that a part of the grip portion 27 is cut out as shown in the side views from the length direction of FIGS. 3 (a) and 4 (a). It is formed in a substantially circular shape. By forming the flat surface portion 27a in this way, it is suitably positioned when stored in an outer case 51 described later, and is preferably held in the outer case 51 when stored in the outer case 51. The Rukoto. Further, on the outer peripheral surface of the grip portion 27, as shown in FIGS. 3 (a) and 4 (b), a plurality of grooves 29 are provided in the circumferential direction in order to prevent slipping when gripped by hand. Is formed.

  And in the inside of the said grip part 27, the protrusion part 27b which protrudes inward inside the inside and supports the said tip main body 11 is provided. The inner peripheral surface of the protruding portion 27b is in close contact with the outer peripheral surface in the vicinity of the base end 11b of the tip body 11. In this way, the grip portion 27 holds the tip body 11 so as to be integrated with the grip portion 27. Further, by holding the vicinity of the base end 11b of the tip body 11 by the protruding portion 27b, an air layer 27c is formed in which a space is formed between the protruding portions 27b. Since the air in the air layer 27c has a heat insulating property, the heat of the tip body 11 is hardly transmitted to the grip portion 27. The air layer 27c corresponds to the heat insulating layer in the present invention. In addition, the air layer 27c, or the protruding portion 27b and the air layer 27c may be replaced with appropriate heat insulating materials to form a heat insulating layer in the present invention.

  Further, the tip 10 is provided with a terminal cover 30 adjacent to the grip portion 27. The terminal cover 30 is provided for the purpose of insulating the male terminal 24 from the outside. Like the grip portion 27 described above, the terminal cover 30 is made of a resin having excellent electrical insulation and heat resistance and is cylindrical. What is formed is assembled and configured. The grip part 27 and the terminal cover 30 are connected by fitting the protrusions 26a and 26b provided in the first interposed member 26 into the fitting holes 27d and 30d provided in the grip part 27 and the terminal cover 30, respectively. It has become a thing. That is, the grip in the present invention is constituted by the grip portion 27 and the terminal cover 30. Therefore, the base end of the grip in the present invention is the base end 30 b of the terminal cover 30. And the base end 30b of this terminal cover 30 is contact | abutted to the front-end | tip 71a of the base plate 71 of the slider 70 demonstrated later. The base end 30 a of the terminal cover 30 is in contact with the base end 27 b of the grip portion 27.

Next, the iron body 50 to which the iron tip 10 is attached will be described.
As shown in FIG. 5, FIG. 6, FIG. 7 (a) and FIG. 7 (b) in which the range B in FIG. 7 (a) is enlarged, the iron body 50 is roughly formed in a substantially cylindrical shape. The outer case 51, a connection device 60 built in the outer case 51, and a slider 70 provided on the outer periphery of the outer case 51.

  The outer case 51 is made of a resin excellent in electrical insulation and heat resistance, and is formed in a substantially cylindrical shape. The outer case 51 is configured by assembling a half-cracked one. The outer case 51 is open at the tip 51a so that the tip 10 can be inserted and withdrawn, and a connecting device 60 is provided inside the cavity. A locking portion 52 for locking the cord armor 80 is formed at the base end 51b. The outer case 51 is integrated by being assembled with each other, which is half-cracked by screwing.

  The connection device 60 includes a female terminal 61 and a lead wire 62 connected to each of the female terminals 61. The female terminal 61 is a terminal that can be fitted to the male terminal 24, and four female terminals are provided corresponding to the male terminal 24. The male terminal 24 and the female terminal 61 are engaged with each other. A lead wire 62 is connected to each of the female terminals 61. The cord 81 is connected to the lead wire 62. A cover 65 for protecting the female terminal 61 is provided on the outer periphery of the female terminal 61.

  In the connection device 60, the female terminals 61 and the lead wires 62 are insulated and separated from each other, and the male terminal 24 is provided in a good posture in the axial direction of the tip 10 and supported. A mounting member 63 is provided. Note that the upper surface of the second interposed member 63 is formed in a planar shape in order to suitably guide a slider 70 described later. Note that a metal band 85 in contact with the spring member 31 and a ground wire 87 connected to the metal band 85 are disposed below the second interposed member 63. The metal band 85 is fixed by the second interposed member 63 and the outer case 51.

  On the outer periphery of the outer case 51, a notch 53 for arranging a slider 70 described later is provided from the vicinity of the base end to the approximate center. The notch 53 is formed so as to extend in the axial direction of the outer case 51, and is notched according to the width and length of a slider 70 described later. A guide plate 54 that projects from the inside of the outer case 51 and guides the slide of the slider 70 is provided inside the notch 53.

  The slider 70 includes a base plate 71 and an extrusion projecting portion 72 formed to project outward from the base end side of the base plate 71. A step which descends toward the tip is formed in the middle portion of the upper surface of the base plate 71, and the forward movement of the slider 70 is caused by the tip of the push-out protrusion 72 colliding with the tip edge 53c of the notch 53. It is regulated to stop. Further, the distal end 71 a of the base plate 71 comes into contact with the proximal end 30 b of the terminal cover 30. The lower surface of the base plate 71 is formed in a planar shape. Accordingly, the slider 70 is suitably guided by the upper surfaces of the guide plate 54 and the second interposed member 63. That is, when the slider 70 moves forward toward the tip 51a of the iron body, the slider 70 can be slid stably until the tip of the push-out projection 72 collides with the tip edge 53c of the notch 53. When the slider 70 is retracted toward the base end 50b, the rear end 70b of the slider 70 can be stably slid until it collides with the rear end edge 53b of the notch 53.

  The soldering iron body 50 is constructed so that the soldering iron 1 constructed as described above is more reliable when assembled, and the soldering iron 1 is further improved in gripping performance. A cylindrical body 91 is provided so as to cover the outer periphery of the cylinder. The cylinder 91 is made of a rubber material. Further, a fastener 92 that prevents the cylindrical body 91 from coming off is also attached to the tip of the iron body 50. In this way, the cylindrical body 91 and the fastener 92 are provided, the outer case 51 that is half-broken in the screw member 95 is integrated, and the soldering iron 1 is reliably integrated by the cord armor 80. ing.

  Next, the function and effect produced by the above-described soldering iron 1 will be described with reference to FIG. FIG. 8 is a diagram showing stepwise removal of the tip 10 from the iron body 50, and FIG. 8A shows an example in which the iron tip 10 is attached to the iron body 50. 8B shows an example in which the slider 70 is slid toward the tip 10, and FIG. 8C shows an example in which the tip 10 is removed from the tip body 50. FIG.

  That is, as shown in FIG. 8A, the soldering iron 1 has a replaceable cartridge-type iron tip 10 attached to a main body 50 whose tip is opened. Although not shown in the figure, the male terminal 24 provided on the proximal end side of the tip 10 is fitted with a female terminal 61 provided in the iron body 50. That is, the male terminal 24 is suitably engaged with the female terminal 61, and the tip 10 does not come out of the iron body 50 by this engagement, and is integrated. In addition, the outer periphery of the grip portion 27 is pressed against the inner periphery of the iron body 50 by the urging of a metal band 85 provided inside the iron body 50. As a result, the frictional force between the outer periphery of the grip portion 27 and the inner periphery of the iron body 50 is increased, and the iron tip 10 and the iron body 50 are more reliably integrated. Then, as described above, the cylindrical body 91 and the fastener 92 are provided, and the outer case 51 that is half-broken into the screw member 95 is integrated. Easy but stable assembly.

  Then, when the push-out protrusion 72 of the slider 70 is pushed toward the tip 10a with a finger, the slider 70 is guided and slid by the upper surfaces of the guide plate 54 and the second interposed member 63. At this time, the distal end 71a of the base plate 71 constituting the slider 70 presses the proximal end 30b of the terminal cover 30 which is the grip proximal end of the present invention, and advances toward the distal end 10a of the tip 10. As a result, the tip 10 is moved away from the iron body 50. That is, the iron tip 10 moves so as to protrude from the outer case 51 of the iron body 50. In addition, the grip portion 27 previously stored in the outer case 51 also moves so as to protrude from the outer case 51.

  Thus, when the tip 10 is moved away from the iron body 50, the male terminal 24 provided on the iron tip 10 and the female terminal 61 provided in the iron body 50 are provided. Will be released. Furthermore, since the grip part 27 that has been stored so far appears outside the hand, the user can grasp the grip part 27 by hand and pull out the tip 10. As described above, the grip portion 27 is made of a resin having excellent electrical insulation and heat resistance. Therefore, even if the tip 10a of the tip 10 is hot, the grip portion 27 is hot. Therefore, the user can grip the grip portion 27 without any problem. Therefore, even when the soldering operation is performed, the tip 10 can be easily pulled out as shown in FIG. 8C.

  If a new tip 10 is inserted into the main body 50 instead of the drawn tip 10, this soldering iron can be used again like a new one. When inserting a new tip 10 into the main body 50 of the iron, it is necessary to push it in until the male terminal 24 is engaged with the female terminal 61. At this time, the base end 30 b of the terminal cover, which is the base end of the grip of the present invention, presses the front end 71 a of the base plate 71 constituting the slider 70 and moves backward toward the base end 50 b of the iron body 50. It becomes.

In addition, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, an appropriate selection is possible. For example, in the soldering iron 1 of the above-described embodiment, the tip 10a of the tip 10 is formed in a conical shape, but is not limited to this example, and an appropriate shape is selected. can do. Further, the replacement of the tip 10 is not only performed when so-called solder erosion progresses, but may be replaced by selecting a tip appropriately depending on the application.
Moreover, even if it is in the shape of the iron body 50 and the shape of the slider 70 described above, an appropriate shape can be selected.

  Further, in the soldering iron 1, a stopper that restricts the grip portion 27 from protruding from the outer case 51 may be provided at the tip 50 a of the iron body 50. When such a stopper is provided, the tip 10 is prevented from being detached from the iron body 50 even during the soldering operation.

DESCRIPTION OF SYMBOLS 1 Soldering iron 10 Tip 10a Tip end 10b Tip base end 24 Male terminal 26a, 26b Protrusion part 27 Grip part (grip)
27b Protruding portion 27c Air layer 27d, 30d Fitting hole 29 Groove 30 Terminal cover 50 Iron body 50b Iron body base 61 Female terminal 70 Slider 71 Base plate 71a Tip of base plate

Claims (3)

A tip having a tip that can melt solder and a male terminal provided at the base end and a female terminal that can be engaged with the male terminal are incorporated, and the male terminal and the female terminal are engaged. A soldering iron including a iron body integrated with the iron tip,
Provided on the outer periphery of the tip is a grip that has heat insulation and covers the vicinity of the proximal end of the tip,
A plurality of projecting portions projecting inward inside the grip are provided only at a part on the tip end side in the axial direction of the grip, and an inner peripheral surface of the projecting portion is a base of the tip. A soldering iron, wherein the soldering iron is in close contact with an outer peripheral surface near an end, and an air layer is formed between the protrusions.   2. The soldering iron according to claim 1, wherein a plurality of grooves extending in the circumferential direction and arranged in the axial direction are formed on an outer peripheral surface of the grip. 3.   The soldering iron according to claim 1, wherein a fitting hole into which a protrusion provided on the tip is fitted is formed in the grip.

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