JP2000115975A - Heating coil body and heating method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sharply enhance the airtightness of a heating part in a heating coil body by a method wherein a coil in the heating coil body is formed in such a way that it can be deformed, and that it can come into contact under a prescribed pressure with the outer circumferential face of a heated object in a heating operation. SOLUTION: Both end parts of a ribbon coil 14 which forms a coil are connected to both ends of the secondary coil of an output transformer 13 which is situated inside the body case 2 of a heating coil body 1. The ribbon coil 14 is formed in such a way that a metal thin plate which is springy and conductive is covered with an insulating member, it is provided with a prescribed rigidity and elasticity, and it is constituted so as to be deformable. In the heating coil body 1, the ribbon coil 14 which is deformed is used as the coil. The coil part 14a of the ribbon coil 14 is brought into contact with the outer circumference heated object, while, e.g. its inside diameter is made small according to the shape of the heated object. The heated object is clamped by the coil part 14a itself of the ribbon coil 14. In this state, a high-frequency current can be supplied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, fixing a resin cap to the end of an electric wire by heat welding the outer sheath of the electric wire,
The present invention relates to a heating coil body used for preventing water from entering the inside of an electric wire and the like, and a heating method using the heating coil body.

[0002]

2. Description of the Related Art Conventionally, an electric wire (cable) formed of, for example, a large number of copper wires (conductors) and having a relatively large outer diameter is shipped from an electric wire manufacturer in a state of being wound around a wooden drum.
Then, since the end portion of the electric wire wound around the drum is in a state where the end face of the internal copper wire is exposed to the outside, in order to prevent corrosion of the copper wire due to ingress of water into the inside of the electric wire,
Generally, a cap is covered on the end of the electric wire.

[0003] This cap is generally formed of a vinyl tube or the like and is placed over the end of the cut electric wire. However, the cap may fall off from the end of the electric wire during transportation of the drum or water may enter the inside of the electric wire. In order to prevent entry, the cap is fixed to the end of the electric wire by winding a vinyl tape, and the end is sealed.

[0004]

However, in the sealing structure of the end portion of the electric wire using the vinyl tape and the cap, the cap cannot be firmly fixed to the end portion of the electric wire for a long period of time. There is a problem that it is difficult to reliably prevent water or the like from entering the water for a long time.

[0005] That is, vinyl tapes and vinyl caps are liable to deteriorate with time, and in particular, vinyl tapes are weak in weather resistance. The cap is securely fixed to the end of the wire for a long period of time, such as when the end of the wire is incompletely sealed, and the entry of water etc. is reliably prevented. It becomes difficult.

As a result, water or the like enters the inside of the electric wire through a gap formed between the inner surface of the cap and the outer surface of the electric wire at the end portion of the electric wire whose sealing state is incomplete, and this water becomes a capillary phenomenon. Penetrates into the interior along the copper wire and corrodes the copper wire. For this reason, when using electric wires, it is a fact that the corroded portion of a predetermined length is cut and discarded, which is likely to cause waste in the use of electric wires. Is a big loss in terms of cost. In other words, in the treatment of the end portion of the electric wire, although the airtightness of the joint portion between the electric wire and the cap is required, this requirement is not sufficiently satisfied by the above-described conventional method. It is a fact.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the invention described in claims 1 to 8 is to set the object to be heated in a clamped state by a coil portion when the object to be heated is heated. An object of the present invention is to provide a heating coil body capable of performing induction heating or the like in a good state, for example, and greatly improving the airtightness of a heating unit. The object of the invention according to claims 9 to 11 is that the object to be heated can be clamped by the coil itself and induction heating or the like can be performed in a stable state, and the heating part of the object to be heated can be heated in a good state. An object of the present invention is to provide a heating method using a heating coil body, which can greatly improve the airtightness of a heating unit and can improve safety and workability of a heating operation.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, an object to be heated or inducted by being arranged on the outer periphery of the object to be heated and supplied with a current of a predetermined frequency. A heating coil body for performing dielectric heating, wherein a coil portion of the heating coil body is deformable and formed so as to be able to come into contact with an outer peripheral surface of an object to be heated at a predetermined pressure during heating.

According to a second aspect of the present invention, there is provided a heating coil body which is arranged on the outer periphery of the object to be heated and which is supplied with a current of a predetermined frequency to induce or dielectrically heat the object to be heated. A deformable coil portion which is arranged on the outer periphery of the object to be heated and can contact the outer peripheral surface of the object to be heated at a predetermined pressure during heating, and a deforming means for deforming the coil portion according to the size of the object to be heated. It is characterized by having.

According to a third aspect of the present invention, there is provided a heating coil body which is arranged on the outer periphery of the object to be heated and which is supplied with a current of a predetermined frequency to induce or dielectrically heat the object to be heated. A deformable coil portion which is arranged on the outer periphery of the object to be heated and which can be brought into contact with the outer peripheral surface of the object to be heated at a predetermined pressure at the time of heating; And an output transformer connected to both ends of the coil unit.

According to a fourth aspect of the present invention, there is provided a heating coil body which is arranged on the outer periphery of the object to be heated and which is supplied with a current of a predetermined frequency to induce or dielectrically heat the object to be heated. A deformable coil portion which is arranged on the outer periphery of the object to be heated and which can be brought into contact with the outer peripheral surface of the object to be heated at a predetermined pressure at the time of heating; An output transformer connected to both ends of the coil unit, a main body case having an operation unit for controlling current supply to the coil unit and a handle unit capable of gripping the heating coil body, I do.

According to a fifth aspect of the present invention, the coil portion is formed so as to substantially surround the outer peripheral surface of the object to be heated, one end of the coil portion is fixedly disposed, and the other end is deformed. It is characterized in that it is connected to the means and can be brought into contact with the outer peripheral surface of the object to be heated by the operation of the deforming means.

According to a sixth aspect of the present invention, the coil portion is formed of a flexible ribbon coil, and the seventh aspect of the present invention is configured such that the coil portion is formed of a flexible electric wire. Further, the invention according to claim 8 is characterized in that the object to be heated is an electric wire and a cap covered by a terminal portion of the electric wire.

With such a configuration, the deformable coil portion is disposed at a predetermined interval on the outer periphery of the object to be heated having, for example, a substantially circular outer peripheral surface. Is deformed and comes into contact with the outer peripheral surface of the object to be heated, and the object to be heated is suppressed by a predetermined pressure and clamped by the coil portion. In this state, for example, a high-frequency current is supplied from an external transistor inverter device to the coil unit via an output transformer or the like. The coil unit generates a magnetic flux by the supply of the high-frequency current, and the magnetic flux induces an eddy current in the heating unit of the object to be heated, thereby heating the heating unit, for example, by induction.

At this time, since the object to be heated is clamped by the coil part itself, a high-frequency current is uniformly supplied to the heating part in a stable state, and a good heating state is obtained. In particular, since the main body case is provided with an operation section for controlling the supply of current to the coil section and a handle section for gripping the heating coil body, the handle section can be operated while holding the heating coil body by hand. At the same time, since the object to be heated is clamped by the coil portion even in a state of being held by hand, the positional relationship of the object to be heated does not change at all, and a better heating state can be obtained. Therefore, when the object to be heated is, for example, a cap having an exothermic paint applied to the end portion and the inner surface of the electric wire,
The heat-generating paint is uniformly heated, and the inner surface of the cap is uniformly welded to the outer sheath of the electric wire, so that the airtightness of the welded portion (heating portion) is greatly improved.

According to a ninth aspect of the present invention, a coil portion of a heating coil body is arranged on the outer periphery of an object to be heated, and a current having a predetermined frequency is supplied to the coil portion to induce or heat the object to be heated. A heating method using a heating coil body, wherein the coil portion disposed on the outer periphery of the object to be heated is deformed and brought into contact with the outer peripheral surface of the object to be heated at a predetermined pressure to clamp the object to be heated, It is characterized in that an object is heated by supplying an electric current to the coil portion.

[0017] According to a tenth aspect of the present invention, the object to be heated has a substantially circular outer peripheral surface, and the substantially circular inner peripheral surface of the coil portion covers substantially the entire circumferential direction of the outer peripheral surface of the object to be heated. According to an eleventh aspect of the present invention, an electric current is supplied after the coil portion contacts at least the outer peripheral surface of the object to be heated.

With this configuration, the coil portion is disposed at a predetermined interval on the outer periphery of the object to be heated, and the inner surface of the coil portion is deformed by deforming the coil portion. The object to be heated is clamped by the coil portion by contacting the object with a predetermined pressure. At this time, the object to be heated is clamped by bringing its inner peripheral surface into contact with substantially the entire outer peripheral surface in the circumferential direction of the object to be heated so that both ends of the coil portion are not electrically conducted.

After the object to be heated is clamped by the coil portion, for example, a high-frequency current is supplied to the coil portion to induction-heat the heating portion of the object to be heated. Thus, for example, in the case where the object to be heated is the electric wire and the cap, the heating portion is heat-sealed and its airtightness is sufficiently maintained, and current is supplied after clamping, so that the safety of the heating operation is reduced. 2. A good heating state can be obtained because the positional relationship between the object to be heated and the coil portion does not change during heating.
The same effects as those of the inventions described in (8) to (8) are obtained.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show an embodiment of a heating coil body according to the present invention, FIG. 1 is a perspective view thereof, FIG. 2 is a partially cutaway perspective view of FIG. 1, FIG.
4 is a longitudinal sectional view, and FIG. 5 is a side view of FIG.

In FIG. 1 to FIG.
It has a cylindrical main body case 2 whose both ends are covered with insulating lids 3 and 4. On one lid 3, a cylinder 5 is fixed, and a lead wire 6 is fixed. A coil guide 7 having a circular guide surface 7 a is fixed to the lid 4. A substantially flat mounting plate 8 is fixed to the upper side of the main body case 2, and a handle 9 is provided at the center of the mounting plate 8.
Is fixed on one end side, and a push button switch 11 for heating control and a push button switch 12 for ribbon coil control described later are attached to the other end side.

On the other hand, an output transformer 13 having a substantially octagonal outer shape is disposed inside the main body case 2 at a lower side thereof. The output transformer 13 includes a core (not shown), a primary coil and a secondary coil wound around the core, and a resonance capacitor connected between the secondary coils as necessary. Is connected to the lead wire 6, and both ends of the secondary coil are connected to both ends of a ribbon coil 14 forming a coil.

An L-shaped rail member 15 made of copper and having a predetermined length is disposed on the upper surface of the output transformer 13. The rail member 15 has a copper slide member 16 to which one end of a ribbon coil 14 is fixed. Are sliding. A rod fixing member 17 made of resin is engaged (or fixed) on the upper part of the slide member 16, and the end of the rod 5 a of the cylinder 5 is fixed to an end surface of the rod fixing member 17.

A spring 26 is interposed between the rod fixing member 17 and the slide member 16 to constantly press the slide member 16 in the direction of the rail member 15.
The lifting of the slide member 16 from the rail member 15 is prevented. As a result, the rod 5a moves forward and backward by the operation of the cylinder 5, so that the rod fixing member 17 and the slide member 16 move a predetermined distance along the rail member 15 in the directions indicated by arrows A and B in FIG.

The ribbon coil 14 is formed, for example, by covering a thin metal plate having spring properties and conductivity with an insulating member, and has a predetermined rigidity and elastic force and is deformable (circularly bendable). Have been. The ribbon coil 14 has one end mechanically and electrically fixed to the slide member 16 and a hole 18 provided in the lid 4 on the other end.
The coil guide 14 is drawn out of the coil guide 7 and bent in a circular shape along the guide surface 7a of the coil guide 7 to form a coil portion 14a. It is drawn into the main body case 2 via the block 19.

The other end of the ribbon coil 14 drawn into the main body case 2 has a substantially L-shaped coil fixing member 20 made of copper fixed to the upper surface of the output transformer 13.
Mechanically and electrically. The rail member 15 fixed to the upper surface of the output transformer 13 and the end surface of the coil fixing member 20 are electrically insulated with a predetermined gap.
3 is electrically connected to one end of the secondary coil, and the coil fixing member 20 is electrically connected to the other end of the secondary coil of the output transformer 13.

Thus, the output coil 13 of the ribbon coil 14 has one end via the slide member 16 and the rail member 15 and the other end via the coil fixing member 20.
Is electrically connected to the secondary coil. In addition,
The inner diameter of the coil portion 14a of the ribbon coil 14 reaches the maximum inner diameter by substantially contacting the guide surface 7a of the coil guide 7 when the cylinder 5 is operated and the rod 5a is advanced most, and the rod 5a is retracted most. The stroke of the rod 5a of the cylinder 5 is set in advance so as to have the minimum inner diameter in the state.

The lead wire 6 is formed of a flexible cable and is connected to an output terminal of a transistor inverter device (not shown). Although not shown, the lead wire 6 (particularly a high-frequency current is supplied) The cooling water is circulated and supplied to the primary coil of the output transformer 13 and the primary coil of the output transformer 13 as necessary.
Heat generation is suppressed.

Next, the operation of the heating coil body 1 is described in terms of an electric wire 21 whose object to be heated has a resin sheath,
The case where the cap 22 is made of resin and is covered by the terminal portion 21a will be described as an example. First, prior to induction heating, a Patos-like member (heat-generating material) containing a conductive or magnetic powder (not shown) is applied over a predetermined width in the circumferential direction around the end 21a of the electric wire 21 or a predetermined width on the inner surface of the cap 22. A paint) is applied, or a ring-shaped member made of a conductor or a magnetic material is fitted into the outer surface of the terminal portion 21 a of the electric wire 21 or the inner surface of the cap 22. Further, the cylinder 5 is set at the position where the rod 5a is most advanced, and the ribbon coil 1
4 is substantially in contact with the guide surface 7a of the coil guide 7.

In this state, the cap 22 is connected to the electric wire 2.
As shown in FIG. 2, the coil portion 14 of the ribbon coil 14 is covered with the terminal portion 21 a of the
Insert into the hole a from a predetermined direction. At this time, for example, the handle 9 of the heating coil body 1 is held in a hand, and the hanging fitting 10 is held at a predetermined position in a state of being suspended by a balancer or the like. The ribbon coil is inserted so that the portion where the ring-shaped member is inserted is located inside the coil portion 14a of the ribbon coil 14.

The terminal 21a of the electric wire 21 is the ribbon coil 1
4 is inserted into the coil section 14a, the push button switch 1
By pushing 2 (for example, turning it on), the cylinder 5 is operated, and the rod 5a is retracted backward from the most advanced position. Due to the retraction of the rod 5a, the rod fixing member 17 moves rearward (to the lid 3 side), and the slide member 16 engaged with the rod fixing member 17 also moves in the same direction. Is pulled in the direction of arrow B.

When one end of the ribbon coil 14 is pulled by the movement of the slide member 16, the other end is fixed on the output transformer 13 by the coil fixing member 20. And its inner diameter becomes smaller. Then, the rod 5a of the cylinder 5 is retracted by a predetermined distance, and the coil portion 14a is
When the outer peripheral surface of the wire 2 comes into contact with the predetermined pressure, the cap 22 and the outer cover of the electric wire 21 are clamped at the predetermined pressure. This clamp state is maintained by continuing the operation state of the cylinder 5.

In this state, for example, by turning on the push button switch 11 for starting heating, the ribbon coil 14 (coil portion 14) is connected via the lead wire 6 and the output transformer 13.
a) is supplied with a high-frequency current, and by this high-frequency current,
An eddy current is induced in the powder or the like in the paste member to generate heat, and the outer surface of the resin electric wire 21 and the resin cap 2 are formed.
2 is melted (welded).

When the supply of the high-frequency current is started in this way, a timer (not shown) of the transistor inverter device connected to the lead wire 6 measures the heating time, and after a predetermined time elapses, the output transformer 13 is supplied to the output transformer 13. The current supply is stopped and an off signal (forward signal) is output to the cylinder 5. The rod 5a of the cylinder 5 advances by the OFF signal, and the rod fixing member 17 and the slide member 16 move in the direction of arrow A along the rail member 15.

The coil portion 14 of the ring coil 14 having a spring property follows the movement of the slide member 16.
a is also deformed outward by the spring force and stops at a position where it contacts the guide surface 7a of the coil guide 7. As a result, the cap 22 is thermally welded to the terminal portion 21a of the electric wire 21 and the ribbon coil 14 returns to the initial position, and the heating operation ends.

In the above example, the push button switch 11 for instructing the heating coil body 1 to start heating by a pressing operation is provided.
And a push button switch 12 for operating the cylinder 5 by a pressing operation to deform the shape of the coil portion 14a of the ribbon coil 14 is provided. However, for example, the power supply and the ON / OFF of the cylinder 5 can be operated individually. Can be provided, and the push-button switch 12 for operating the cylinder 5 can be provided with a power supply function, so that a high-frequency current can be automatically supplied to the ribbon coil 14 substantially simultaneously with the operation of the cylinder 5 or after a predetermined time. It can also be configured as follows.

As described above, in the heating coil body 1 of the above embodiment, the deformable ribbon coil 14 is used as a coil, and the coil portion 14a of the ribbon coil 14 is formed, for example, according to the shape of the object to be heated. Since the inner diameter is reduced and the object is brought into contact with the outer peripheral surface of the object to be heated, the object to be heated is clamped by the coil portion 14a of the ribbon coil 14 itself, and a high-frequency current can be supplied in this state.
The induction heating can be performed without changing the positional relationship between the coil portion 14a and the object to be heated at the time of heating, a stable induction heating operation can be performed, and a good heating state can be obtained.

The heating coil body 1 is connected to the lead wire 6 to the transistor inverter device, while holding the handle 9 by hand, and operating the push-button switches 11 and 12 to clamp the object to be heated and the high-frequency current. , The movement and transportation of the heating coil body 1 can be facilitated, so that the efficiency of the heating operation can be improved, and the heating operation can be easily performed even at a work site such as outdoors. it can. Further, since the coil portion 14a of the ribbon coil 14 is deformed within a predetermined range, it is possible to easily cope with the heating operation of the objects to be heated of various sizes, and the main body case 2 is formed in a cylindrical shape. Thus, the heating coil body 1 having excellent versatility, such as improved portability and usability, can be obtained.

Further, an output transformer 1 is connected to the heating coil 1.
3, the output transformer 13 can compensate for the current loss caused by the lead wire 6, and the heating coil 1 with high efficiency can be obtained.
3, the transmission loss is more efficiently reduced, and as a result, the capacity and cost of the transistor inverter device connected to the heating coil unit 1 can be reduced, and the transportation can be facilitated. Will be possible.
Further, since the ribbon coil 14 is guided by the coil guide 7, the ribbon coil 14 itself is protected, so that the ribbon coil 14 can be stably used for a long period of time even when it is used outdoors, for example, in a poor use environment. .

In particular, when the heating coil body 1 of the above embodiment is used to connect the electric wire 21 having a resin sheath and the resin cap 22 as an object to be heated, the cap 22 and the ribbon of the sheath of the electric wire 21 are used. At the time of heating and melting by the coil 14, the cap 22 is
Can be pressed against the outer shell of the wire, so that the outer shell of the melted cap 22 or the electric wire 21 can be thermally welded in a favorable state. In addition, since the entire circumference of the heating portion can be suppressed by the coil portion 14a of the ribbon coil 14, the entire area of the inner surface of the cap 22 in the circumferential direction and the entire area of the outer surface of the outer cover of the electric wire 21 are uniformly heated. The strength of thermal welding can be increased, for example, by welding.

As a result, for example, in the case of the electric wire 22, the airtightness of the terminal portion 21a can be greatly improved, and even when the electric wire 21 wound around the drum is stored outdoors or the like for a long period of time, The heat-welded portion of the cap 22 and the outer skin of the electric wire 21 hardly changes with time.
a can be maintained for a long time, and a copper wire (core wire) caused by entry of water or the like into the terminal portion 21a.
Can be reliably prevented, and the scrapped portion of the terminal 21a of the electric wire 21 due to the corrosion can be shortened as much as possible.

Further, a ring-shaped member made of a powder-like material or a magnetic material or the like in which powder is mixed in advance is set on the inner surface of the cap 22 or the outer circumferential surface of the terminal portion 21a of the electric wire 21.
Since the cap 22 and the electric wire 21 can be set simply by inserting the outside of the cap 22 into the hole of the coil portion 14a of the ring coil 14 having a relatively large diameter, the setting operation of the cap 22 and the electric wire 21 is simplified, and various diameters are set. And the terminal 21a of the electric wire 21 can be sealed easily and efficiently.

In the above embodiment, the ribbon coil 14 is used as the coil. However, the present invention is not limited to this. For example, a coil as shown in FIGS. can do. That is, the coil shown in FIG. 6A uses an electric wire 23 (or a flat plate) having flexibility and a spring property and having a circular cross section. The ribbon coil 14 can be deformed in the direction, and the same operation and effect as those of the ribbon coil 14 of the above embodiment can be obtained.

The coil shown in FIG. 6B is obtained by connecting a plurality of the electric wires 23 having a circular cross section in parallel, and both ends of each electric wire 23 are integrally connected and fixed to a fixing member 24. I have. Also in this coil, it can be deformed by the spring property of each wire 23, and the same operation and effect as the ribbon coil 14 of the above embodiment can be obtained. The operation and effect can be obtained. In this example, in order to stabilize the outer shape of the wires 23 arranged side by side, the entire wires arranged side by side may be covered with an insulating coating 25 as shown by a two-dot chain line.

As described above, the heating coil body 1 according to the present invention
It is sufficient that the coil portion is capable of deforming at least a predetermined dimension inward and outward following the forward / backward movement of the rod 5a of the cylinder 5, and does not necessarily have to have a spring property, and need not have a circular outermost shape. Instead, it is possible to adopt an appropriate material and structure (shape) that is substantially in conformity with the shape of the outer peripheral surface of the object to be heated after being deformed into a shape into which the object to be heated can be inserted.

In the above embodiment, the cylinder 5 is used to deform the ribbon coil 14. However, the deforming means according to the present invention is not limited to the cylinder 5, but may be a motor, for example. Thus, the ribbon coil 14 can be moved and deformed, or both ends of the ribbon coil 14 can be moved and deformed. Further, in the above-described embodiment, the case where the high-frequency current is supplied to the ribbon coil 14 and the object to be heated is subjected to the high-frequency induction heating has been described. However, a low-frequency current can be used as the current, Instead, it can be applied to dielectric heating.

Further, in the above-described embodiment, the coil guide 7 is provided on the other end side of the main body case 2, but this coil guide 7 is not always necessary. For example, when the coil portion 14a has a predetermined rigidity. Can be omitted. In the above embodiment, the case where the object to be heated is the electric wire 21 and the cap 22 is described. However, the present invention relates to the connection between resin pipes, the connection between various cables such as an optical fiber cable, and the like. Tube connection,
Alternatively, the present invention can be applied to, for example, shrinkage of a cap to be inserted into a core connection portion of various cables, and can also be applied to a case where an integrated object to be heated is simply heated.

In the above embodiment, the coil portion 14a of the ribbon coil 14 and the guide surface 7 of the coil guide 7 are provided.
Although the case where a is circular has been described, these may be formed into, for example, an elliptical shape or a polygonal shape. Furthermore, in the above-described embodiment, the outer shape of the heating coil body 1 is formed in a substantially cylindrical shape, but may be formed in a polygonal shape or a rectangular parallelepiped shape, or the output transformer 13 in the main body case 2 may be formed.
The arrangement positions of the slide member 16 and the like, the positions where the cylinder 5 and the lead wires 6 are drawn out, the shape of the output transformer 13 and the like are merely examples, and can be changed as appropriate.

[0049]

As described in detail above, claims 1 to 8
According to the described invention, since the coil portion is configured to be deformable, current can be supplied to the coil portion in a state where the object to be heated is clamped by the coil portion, and the object to be heated and the coil portion In a state in which the positional relationship is stabilized, induction heating or dielectric heating can be performed, and a favorable heating state can be obtained. In particular, by incorporating an output transformer in the main body case or providing a handle in the main body case, transportation of the heating coil body and the like can be simplified, improving the work efficiency of the heating work, and improving the work to be heated. In the case of an electric wire and a cap, etc., the cap and the electric wire can be thermally welded,
The airtightness of the heating section can be greatly increased by a simple method.

According to the ninth to eleventh aspects of the present invention, after the object to be heated is clamped by the deformable coil portion, for example, a high-frequency current is supplied to the coil portion to induce the heating portion of the object to be heated. Alternatively, the same effect as the invention according to claims 1 to 8 can be obtained, for example, because the dielectric heating allows the positional relationship between the coil portion and the object to be heated to be stabilized and a good heating state can be obtained. Since the current is supplied after the heated object is clamped, the safety of the heating operation is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a heating coil body according to the present invention.

FIG. 2 is a partially broken perspective view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a longitudinal sectional view of the same.

FIG. 5 is a side view of FIG. 3;

FIG. 6 is a schematic view of a main part showing another embodiment of the heating coil.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating coil body 2 Main body case 5 Cylinder 6 Lead wire 7 Coil guide 7a Guide surface 11, 12 Push button switch 13 Output transformer 14 Ribbon coil 14a Coil part 15 Rail member 16 Slide member 17 Rod fixing member 20 Coil fixing member 21 Wire 21 Terminal Part 22 Cap

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference)

Claims (11)

[Claims] 1. A heating coil body which is arranged on the outer periphery of an object to be heated and is supplied with a current of a predetermined frequency to induce or dielectrically heat the object to be heated. A heating coil body which is deformable and formed so as to be able to come into contact with an outer peripheral surface of an object to be heated at a predetermined pressure during heating. 2. A heating coil body which is arranged on an outer periphery of an object to be heated and is supplied with a current of a predetermined frequency to induce or dielectrically heat the object to be heated. A heating device comprising: a deformable coil portion capable of coming into contact with an outer peripheral surface of an object to be heated at a predetermined pressure during heating; and a deforming means for deforming the coil portion in accordance with the size of the object to be heated. Coil body. 3. A heating coil body arranged on the outer periphery of the object to be heated and supplied with a current of a predetermined frequency to induce or dielectrically heat the object to be heated. A deformable coil portion that can be brought into contact with the outer peripheral surface of the object to be heated at a predetermined pressure at the time of heating, deforming means for deforming the coil portion according to the size of the object to be heated, and connected to both ends of the coil portion And an output transformer. 4. A heating coil body which is arranged on the outer periphery of the object to be heated and is supplied with a current of a predetermined frequency to induce or dielectrically heat the object to be heated, and is arranged on the outer periphery of the object to be heated. A deformable coil portion that can be brought into contact with the outer peripheral surface of the object to be heated at a predetermined pressure at the time of heating, deforming means for deforming the coil portion according to the size of the object to be heated, and connected to both ends of the coil portion A heating coil body, comprising: an output transformer, an operation unit for controlling the supply of current to the coil unit, and a handle part capable of gripping the heating coil body. 5. The coil section is formed in a shape that substantially surrounds the outer peripheral surface of the object to be heated, one end of the coil section is fixedly disposed, and the other end is connected to the deforming means. The heating coil body according to any one of claims 2 to 4, wherein the heating coil body is configured to be able to come into contact with the outer peripheral surface of the object to be heated by the operation of (1). 6. The heating coil body according to claim 1, wherein the coil portion is formed of a flexible ribbon coil. 7. The heating coil body according to claim 1, wherein the coil portion is formed of a flexible electric wire. 8. The heating coil body according to claim 1, wherein the object to be heated is an electric wire and a cap covered by a terminal portion of the electric wire. 9. A heating method using a heating coil body for arranging a coil portion of a heating coil body around the object to be heated and supplying a current of a predetermined frequency to the coil part to induce or heat the object to be heated. A method, wherein a coil portion disposed on the outer periphery of the object to be heated is deformed to contact the outer peripheral surface of the object to be heated with a predetermined pressure to clamp the object to be heated, and thereafter, an electric current is supplied to the coil portion. A heating method using a heating coil body, which heats an object to be heated. 10. The object to be heated has a substantially circular outer peripheral surface,
The heating method using the heating coil body according to claim 9, wherein the substantially circular inner peripheral surface of the coil portion is brought into contact with substantially the entire circumferential direction of the outer peripheral surface of the object to be heated. 11. A heating method using a heating coil according to claim 9, wherein a current is supplied to the coil portion at least after the coil portion comes into contact with an outer peripheral surface of the object to be heated.