JP3148709B2 - High frequency heating coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating coil used for an induction hardening apparatus, and more particularly, to a high-frequency heating coil having a coil structure for heating at least a part or the whole of a side surface of a long work at a high frequency. About.

[0002]

2. Description of the Related Art A conventional first high-frequency heating coil body D having a coil structure for high-frequency heating the side surface of a long workpiece W.
Will be described with reference to FIG. 14 and FIG. FIG.
14A is a schematic side view showing a conventional first high-frequency heating coil body and its peripheral mechanism, and FIG. 14B is a schematic front view showing the conventional first high-frequency heating coil body and its peripheral mechanism. FIG. 15 (however, a transfer device is not shown), and FIG. 15 is a perspective view showing a first conventional high-frequency heating coil body.

The first conventional high-frequency heating coil body D is formed symmetrically with respect to the transport direction of the long workpiece W. The high-frequency heating coil body D includes a pair of downstream heating conductors 10 and 11 arranged in a perpendicular direction near both sides of the long workpiece W transported by the workpiece transporting device H having the roller R. The pair of heating conductors 12 and 13 on the upstream side, the lower end of the downstream heating conductor 10 and the lower end of the upstream heating conductor 12 on the same side surface of the long workpiece W. A connecting conductor portion 20 for connecting, a connecting conductor portion 21 for connecting a lower end portion of the downstream heating conductor portion 11 and a lower end portion of the upstream heating conductor portion 13, and a pair of the downstream heating conductor portions 10; , 11 are connected to each other by detouring at the upper side of the long workpiece W and interconnecting with each other.
2 and a connection conductor portion extending from the upper end of the elongated work W so as to be substantially symmetrical with the connection conductor portion 22 with the upper end portions of the upstream heating conductor portions 12 and 13 as starting ends. 23, 24 and a pair of connecting conductors 30, 31 connected to each other in parallel with each other in the upper side direction of the long workpiece W, with the ends of the connecting conductors 23, 24 as starting ends 30a, 31a, respectively. (The connecting conductor portions which are respectively continuous with the connecting conductor portions 23 and 24) and the connecting conductor portions 3
And a lead plate portion 940 connecting the end portions 30b, 30b of the reference numerals 0, 31.

The lead plate portion 940 has a flat insulating plate portion 940a and conductive portions 940b and 940c sandwiching the insulating plate portion 940a so as to sandwich the insulating plate portion 940a. The insulating plate portion 940a is connected to the connection conductor portions 30, 3
1 so that the connecting conductor 3
No short circuit occurs between 0 and 31. The lead plate 940 is fixedly connected to the lower end of the coil power supply transformer 1000. Coil power transformer 1000
Is suspended by a suspension mechanism 1500 provided from a base (hereinafter, the “base” indicates a portion of a base to which the work transfer device H and the like are fixed).

[0005] The coil portion of the high-frequency heating coil body D is a highly conductive rectangular pipe, and the heating conductor portions 10, 11, 12,
13 and connection conductor parts 20, 21, 22, 23, 24, 3
The coils 0 and 31 are fixedly connected to each other as described above to form a single connected coil. Cooling water for cooling the coil is passed through the internal hole. The cooling water is supplied and drained by water pipes (not shown) connected to water pipe connection ports 30c, 31c provided at the end portions 30b, 31b of the connection conductors 30, 31, respectively.

[0006]

With the conventional first high-frequency heating coil body D having the above-described structure, a long workpiece W is used.
When high-frequency heating is performed on both side surfaces of the heating conductor portions 10 and 1
The portions 1, 12, and 13, which are along both side surfaces of the long workpiece W, contribute to high-frequency heating by lines of magnetic force generated from those portions.

Therefore, as shown in the hatched areas G1 and G2 in FIG. 15, the entire surface of the long work W on both side surfaces is intensively heated by high frequency. After that, quenching is completed by quenching liquid injection jackets J1 and J2 described later (see FIG. 16). For this reason, in the case of the first conventional high-frequency heating coil body D, a certain area from the upper and lower sides of both sides of the long workpiece W is defined as a non-heating area (non-hardening area), and the long workpiece W However, there is a problem that it is difficult to perform high-frequency heating only in an arbitrary height region such that only a central region on both side surfaces is a heating region (quenching region). Further, since the area between the regions G1 and G2 is apt to be narrowed, if it is desired to form a screw hole between the regions G1 and G2, the region where the screw hole is to be formed and the region G1, G2
G2 may greatly overlap. That is,
Since the hardened and hardened portion takes a large amount with respect to the screw hole formation scheduled region, the time required for forming the screw hole is lengthened, and there is also a problem that the processing cost is increased. This problem becomes more serious in the following phenomena.

On the other hand, a conventional first high-frequency heating coil body D
In the case of, the quenching is completed by quenching liquid jetting jackets J1 and J2 described below, while high-frequency heating is performed on both sides of the long workpiece W by the high-frequency heating coil body D.
The long workpiece W bends to the right or left in the transport direction (hereinafter simply referred to as left and right in the transport direction), and the quenching depth of the long workpiece W (the depth of the hardened layer) is inappropriate. There is a problem that the phenomenon that appears becomes large.

This phenomenon will be described with reference to FIG.
FIG. 16 shows that a long work is bent by high frequency heating of a long work by a conventional first high-frequency heating coil body while being hardened by a quenching liquid jetting jacket. FIG. 3A is a schematic explanatory view for explaining that a phenomenon in which the quenching depth is inappropriate appears significantly.
Shows a state in which the long workpiece starts to be bent, and FIG. However, it is exaggerated for clarity.

As shown in FIG. 16, a quenching liquid injection jacket J is provided downstream of the high-frequency heating coil body D.
1, J2 are fixedly provided on both sides of the passage area of the long workpiece W. As shown in FIG.
The long work W is conveyed by rollers R with guides, and the heating conductor portions 10, 11, 12, 13 of the high-frequency heating coil body D
, First, since there is uneven heating on the left and right, for example, if the right side of the long workpiece W is heated excessively, the long workpiece W will bend to the left.

This is because the long work W has distortion during machining, and the gap between the inner surface of the guide-equipped roller R and both side surfaces of the long work W is as follows. Is provided, the long workpiece W does not properly pass between the heating conductor portions 10 and 11 and between the heating conductor portions 12 and 13.
That is, the long workpiece W and the heating conductor portions 10, 11, 12,
This is because the distance from the lens 13 slightly changes, and uneven heating occurs on the left and right sides. The gap here is a long workpiece W
In consideration of the fact that the long work W is heated and expands due to heating, the long work W is difficult to adhere to the inner surface of the roller R with the guide. It is provided so that there is no.

Subsequently, when the heating area of the long workpiece W passes through the heating conductors 10, 11, 12, and 13 and reaches the quenching liquid jetting jackets J1 and J2, the jackets J1 and J2.
The quenching liquid is injected from Step 2 to complete the quenching of the region where the quenching liquid has been injected. At the stage of the quenching completion process, the long work W is further bent to the left due to the imbalance in cooling of the long work W. Then, FIG.
As shown in FIG. 5, the left side of the long workpiece W comes into contact with the left inner side surface of the roller R with guide on the downstream side,
Elongated work W (particularly heating conductor portions 10, 11, 12, 1
3 is shifted to the right. As a result, the heating unevenness on the left and right is further increased, and the deviation of the cooling balance between the jackets J1 and J2 is also increased, and the quenching depth (the depth of the hardened layer) on the right side of the long workpiece W is larger than that on the left side. It will be deep.

In order to solve this problem, a conventional second high-frequency heating coil E, which has been improved from the first conventional high-frequency heating coil D, is shown in FIG. 17 and FIG.
This will be described with reference to FIG. FIG. 17 is a perspective view showing a second conventional high-frequency heating coil body.

The second conventional high-frequency heating coil body E is different from the first conventional high-frequency heating coil body D on the downstream side of the pair of heating conductors 10 and 11 (that is, on the downstream side of the high-frequency heating coil body D). ), A gate-shaped side plate 50, a gate-shaped side plate 60 on the upstream side of the pair of heating conductors 12 and 13, and connecting bodies 70 and 71 for connecting the side plates 50 and 60 to each other. That is, the side plates 50 and 60 are connected
Are fixed on both sides of the high-frequency heating coil body D.

Side plate 50 on the downstream side of high-frequency heating coil body D
, Insulating chips 51 and 52 are fixedly installed so as to protrude toward the long workpiece W side. This chip 51,
The distance between the inner ends 51a and 52a of the long workpiece W and both sides of the long workpiece W is such that the two sides of the long workpiece W in the non-heated state do not contact the inner ends 51a and 52a of the chips 51 and 52. It is set to a predetermined distance. Also, the inner ends 51a and 5a
The distance between the second work 2a and the second work 2a is set slightly larger than the width of the long workpiece W in the heated state. by this,
The long workpiece W in the heated state is prevented from hitting the chips 51 and 52. Note that, on the downstream side of the high-frequency heating coil body E, quenching liquid injection jackets J1 and J2 are provided fixed to both sides of the passage area of the long workpiece W.

In the second conventional high-frequency heating coil E having such a configuration, as shown in FIG. 14B, a lead plate 940 is fixedly connected to the lower end side of the coil power supply transformer 1000. In this state, it is suspended by the suspension mechanism 1500. The suspension mechanism 1500 allows the high-frequency heating coil body E to freely swing left and right with the fulcrum 1500a as a fulcrum.

Therefore, even if the long workpiece W described with reference to FIG. 16 is bent, the chip 51 or 52 comes into contact with the bent long workpiece W and is connected to the high-frequency heating coil E and the high-frequency heating coil E. Coil power transformer 1
000 is moved so that the difference between the respective distances between the inner surfaces of the heating conductor portions 10, 11, 12, 13 and both side surfaces of the long workpiece W does not increase any more. Therefore, the high-frequency heating strength of the conventional second high-frequency heating coil body E on both side surfaces of the long workpiece W is set to a level within a certain range. Therefore, when the quenching completion processing is performed on both side surfaces of the long workpiece W by the quenching liquid jet jackets J1 and J2, the deviation of the cooling balance between the left and right is also set to a level within a certain range. That is, in the second conventional high-frequency heating coil E, the left and right variations in the quenching depth (hardened layer depth) due to the bending of the long workpiece W are prevented from increasing (the width is within a certain range). So) has been automatically improved.

However, in the case of the second conventional high-frequency heating coil E, the weight of the coil power supply transformer 1000 to which the high-frequency heating coil E is fixedly connected is very heavy. Therefore, with respect to the bending of the long workpiece W, the high-frequency heating coil body E and the coil power supply transformer 1000 are arranged so as not to hinder the transport of the long workpiece W to which the contact pressure with the chips 51 and 52 is applied. It is necessary to move to follow. For this purpose, in order to prevent the load of the coil power supply transformer 1000 from being directly applied to the side surface of the long workpiece W, the coil power supply transformer 1000 is suspended by a spring balancer or the like.
Weight reduction mechanism such as pulling up to the 500 side or pushing up the coil power supply transformer 1000 (not shown)
Need to be added. There is a problem that such a lightening mechanism is relatively large.

It is a main object of the present invention to appropriately heat a predetermined area in an arbitrary height direction on a side surface of a long work, and to automatically follow a bending of the long work during heating. Accordingly, an object of the present invention is to provide a high-frequency heating coil body capable of uniformly and appropriately heating both side surfaces of a long work.

[0020]

In order to solve the above problems, a high-frequency heating coil according to the present invention is a high-frequency heating coil for heating a side surface of a long work relatively moving in a predetermined direction. A pair of linear heating conductors disposed substantially in parallel with the predetermined direction in the vicinity of the position to be heated on the side surface of the long work, and a long work between one end of the pair of heating conductors. A first connection conductor portion that is detour-connected at a predetermined distance or more from the coil-power-supplying transformer side while being detoured at a predetermined distance or more from the long workpiece with each other end of the pair of heating conductor portions as a base end. And a pair of second connection conductors that are fixedly connected to the second connection conductor.

Therefore, in the case of the high-frequency heating coil body according to the present invention, the conductor portions (connection conductor portions) of the coil other than the pair of linear heating conductor portions are detoured away from the long workpiece by a predetermined distance or more. The conductor part (connection conductor part) of the coil other than the heating conductor part should not be heated except for a certain area in the desired height direction on the side surface of the long workpiece. it can.

The high-frequency heating coil according to the present invention is provided on the first connection conductor and the pair of second connection conductors, and rotates the heating conductor substantially in parallel with the elongated work. Rotating means on a vertical surface, pressing means for urging the heating conductor toward the side of the long workpiece, and heating to maintain the heating conductor and the long workpiece at a substantially predetermined distance. It is preferable to include an insulating spacer portion provided to protrude from the conductor portion to the side surface of the long work.

Therefore, in the case of the high-frequency heating coil body according to the present invention, the first connection conductor portion and the pair of second high-frequency heating coil bodies (even if the coil power supply transformer and the high-frequency heating coil body are fixed). The heating conductor portion is vertically rotatable because the movable portion has a movable portion called a vertically rotating means provided on the connection conductor portion. The rotatable direction is a direction in which the heating conductor is substantially parallel to the long workpiece.

A spacer is connected to the heating conductor so as to protrude to the side of the long work, and the heating conductor is pressed by the pressing means and the vertical rotating means. It is urged to the side of the long workpiece.
That is, the heating conductor portion comes into pressure contact with the side surface of the long workpiece via a predetermined dimension called the spacer portion. Therefore,
The distance between the heating conductor and the side surface of the long work is constant.

[0025] Even if the long work relatively moving in the predetermined direction is heated and turned to the right or left in the moving direction, the heating conductor is kept in contact with the pressing means and the vertical rotating means. As a result, the pressing member keeps pressing and contacting the side surface of the long work via the spacer portion. Therefore, in the case of the high-frequency heating coil body according to the present invention, when focusing on the entire length of the heating conductor, the distance distribution between the heating conductor and the side surface (that is, the heating position) of the long work is made substantially constant. Since the continuous work can be kept, the side surface of the long work can be appropriately heated while automatically following the bending of the long work. Therefore, the quenching liquid injection jacket provided on the downstream side of the high-frequency heating coil body can ultimately appropriately quench the side surface of the long workpiece.

In the above description, the vertical rotating means provided on the first connection conductor is, for example, a part of the first connection conductor, and And a connecting plate portion connecting between the pair of separated vertical rotating device contact portions, and a connecting plate portion and a vertical rotating device contact portion. A through-hole portion provided so as to penetrate both portions in a horizontal direction at a portion where the contact portion contacts, a fastening component portion inserted into the through-hole portion, and an elastic body portion fitted into the fastening component portion. Should be provided.

On the other hand, the vertical rotating means provided on each of the pair of second connection conductors is, for example, a part of the second connection conductor, A pair of vertical rotating means contact portions that are in contact with each other in a separated state, and a pair of the vertical rotating means contact portions are provided so as to penetrate both in a horizontal direction at a portion where the vertical rotating means contact portions contact each other. What is necessary is just to have the through-hole part provided, the fastening part part inserted in this through-hole part, and the elastic body part fitted in this fastening part part.

In the case of the high-frequency heating coil body according to the present invention, the fastening part includes a water passage cavity formed at the center thereof, and a side outer end of the fastening part from the water passage cavity. And a water-permeable through-hole reaching up to. Therefore, in the case of the high-frequency heating coil body according to the present invention,
The water passage cavity and the water passage through hole of the fastening part can be used as a passage for cooling water.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A high-frequency heating coil according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1A is a schematic side view showing a high-frequency heating coil body according to a first embodiment of the present invention and its peripheral mechanism, and FIG. 1B is a first embodiment of the present invention. FIG. 2 is a schematic front view showing a high-frequency heating coil body according to the present invention and a peripheral mechanism thereof (however, a transfer device is not shown). FIG. 2 shows a main body of the high-frequency heating coil body according to the first embodiment of the present invention. FIG. 3 is a perspective view showing a high-frequency heating coil body according to the first embodiment of the present invention.

The high-frequency heating coil C (see FIG. 3) according to the first embodiment of the present invention is attached to a main body B (see FIG. 2) of the high-frequency heating coil C and is attached to the main body B. Side plates 950, 960, and both side plates 950, 96
It is provided with connecting bodies 970 and 971 for connecting between 0 and insulating chips 951 and 952 provided on the downstream side plate 950 so as to protrude toward the long workpiece W side.

The main body portion B is configured such that a side surface of a long work W conveyed by a work conveyance device H having a roller R in a conveyance direction (predetermined direction) is connected to the coil feeding transformer 100.
This is a high-frequency heating coil body that heats using a current from 0, and is formed substantially symmetrically in the structure with respect to the transport direction of the long workpiece W.

The main body B includes a pair of linear heating conductors 900 and 901 disposed substantially parallel to the predetermined direction near the position to be heated on the side surface of the long workpiece W, and the pair of heating conductors. A first connection conductor portion 910 having a shape in which a substantially angular C-shape which is detour-connected between the ends 900a and 901a of the portions 900 and 901 by a predetermined distance or more from the long workpiece W is turned down; The other ends 900b and 901b of the heating conductors 900 and 901 are set as base ends 920a and 921a, and are substantially U-shaped reaching the upper side of the long work W while detouring away from the long work W by a predetermined distance or more. Lower body portions 920L, 9 of the pair of second connection conductor portions 920, 921
21L, and the upper end portions 920b and 921b of the elongated work W in the lower body portions 920L and 921L of the second connection conductor portions 920 and 921, and are disposed on the upper side of the elongated work W and are supplied with the coil power. Upper body portions 930, 931 of a pair of second connection conductor portions 920, 921 fixedly connected to the transformer side 1000, and the upper body portions 930, 93
And a lead plate portion 940 connecting the first end portions 930b and 931b.

The lead plate portion 940 is formed of an insulating plate portion 940
a and conductive portions 940b and 940c sandwiching both sides of the insulating plate portion 940a so as to sandwich the insulating plate portion 940a. Note that the insulating plate portion 940a includes upper body portions 930 and 93.
1, so that the upper body portions 930 and 931 are not short-circuited. The lead plate 940 is provided with a coil power supply transformer 1000.
(See FIG. 1). The coil power supply transformer 1000 is suspended by the suspension mechanism 1500 provided from the base.

The coil portion of the main body portion B of the high-frequency heating coil body C is, for example, a square pipe of good conductivity,
00, 901, the first connection conductor 910, and the second connection conductors 920, 921 are fixedly connected to each other as described above to form a single connected coil. Cooling water for cooling the coil is passed through the internal hole. This cooling water is supplied by water pipes (not shown) connected to water pipe connection ports 930c and 931c provided at the end portions 930b and 931b of (the upper body portions 930 and 931 of) the second connection conductor portions 920 and 921. , Water supply and drainage.
Note that, on the downstream side of the high-frequency heating coil body C, quenching liquid injection jackets (not shown) are provided fixed to both sides of the passage area of the long workpiece W.

In the main body portion B of the high-frequency heating coil body C thus configured, portions other than the heating conductor portions 900 and 901, that is, the first connection conductor portion 910 and the second connection conductor portions 920 and 921 are separated from each other. Since it is provided so as to detour at a predetermined distance or more from the long workpiece W, the portion other than the heating target on the side surface of the long workpiece W is not heated. That is, in the structure of the main body B, it is possible to appropriately heat a predetermined area in an arbitrary height direction on the side surface of the long workpiece W.

However, even in the main body portion B, when the both sides of the long work W, which is the third problem described in the problem to be solved by the invention, is heated and quenched, the long work W becomes long. The problem that the work W is bent to the right or left in the transport direction and the quenching depth (depth of the hardened layer) of the long work W appears to be inappropriate has not been solved.
Similarly to the high-frequency heating coil body E of the first embodiment, also in the high-frequency heating coil body C according to the first embodiment of the present invention, the main body B has side plates 950, 960, and both side plates 950, 960.
It is desirable to have connecting bodies 970 and 971 for connecting the 60s and chips 951 and 952 provided on the side plate 950 on the downstream side.

The side plates 950 and 960 are formed in a gate shape, and a pair of linear heating conductors 900 and 9 are provided.
01 are provided at both ends. The connecting body 970 includes the first
And the lower body 920 </ b> L of the second connection conductor 920 and one end of the side plates 950 and 960.
The connecting body 971 is fixed to the lower body 921L of the first connection conductor 910 and the second connection conductor 921, and to the other ends of the side plates 950 and 960.

The inner ends 951a of the chips 951 and 952,
The distance between the both sides of the long work W in a non-heated state is such that the distance between the two sides of the long work W is the chips 951 and 95.
2 are set to a predetermined distance that does not make contact with the inner ends 951a and 952a. The distance between the inner ends 951a and 952a is set slightly larger than the width of the elongated workpiece W in the heated state. In this way, the long workpiece W in the heated state does not hit the chips 951 and 952.

Therefore, it is assumed that the long workpiece W is heated by the high-frequency heating coil body C and quenched by the quenching liquid jet jacket, and the long workpiece W described with reference to FIG. Also chip 951 or 9
Reference numeral 52 denotes a high-frequency heating coil C and a coil power supply transformer 1000 which are in contact with the bent long workpiece W, and respectively connect the inner surfaces of the heating conductors 900 and 901 and both side surfaces of the long workpiece W. Works so that the difference between the distances does not increase any more. Therefore, the high-frequency heating intensity of the high-frequency heating coil body C on both side surfaces of the long workpiece W is set to a level within a certain range. Therefore, the right and left cooling balance deviations when the quenching completion processing is performed on both side surfaces of the long workpiece W by the quenching liquid injection jacket are also at a level within a certain range. That is, in the high-frequency heating coil body C, the variation in the quenching depth (the depth of the hardened layer) due to the bending of the long workpiece W is not automatically increased (to be within a certain range width). Has been improved.

However, even in the case of the high-frequency heating coil C according to the first embodiment of the present invention, the weight of the coil power supply transformer 1000 to which the high-frequency heating coil C is fixedly connected is very large. heavy. Therefore, with respect to the bending of the long workpiece W, the high-frequency heating coil body E and the coil power supply transformer 1000 are arranged so as not to hinder the transport of the long workpiece W to which the contact pressure between the chips 951 and 952 is applied. It is necessary to move to follow.
For this purpose, the coil power supply transformer 1000 is pulled up to the suspension mechanism 1500 side by, for example, a balancer using a spring, so that the load of the coil power supply transformer 1000 is not directly applied to the side surface of the long workpiece W. It is necessary to add a relatively large-scale lightening mechanism (not shown) such as pushing up the power supply transformer 1000.

Therefore, as an improved type of the high-frequency heating coil body C according to the first embodiment of the present invention, an improved type based on the main body B of the high-frequency heating coil body C according to the second embodiment of the present invention is described. The high-frequency heating coil body A according to the embodiment will be described below with reference to FIGS. 4 to 13 and FIG.

FIG. 4 is a schematic perspective view showing a high-frequency heating coil according to a second embodiment of the present invention. FIG. 5 is a perspective view of a high-frequency heating coil according to a second embodiment of the present invention. FIG. 6 is a schematic plan view showing a vertically rotating means provided on one connection conductor part, and FIG. 6 is provided on a second connection conductor part of a high-frequency heating coil body according to a second embodiment of the present invention. FIG. 7 is a partially cut-away schematic plan view showing a rotating means on a vertical plane.
FIG. 8 is a schematic cross-sectional view showing a high-frequency heating coil body according to a second embodiment of the present invention. FIG. 8 is a diagram showing a heating conductor portion of the high-frequency heating coil body according to the second embodiment of the present invention. Even if the long workpiece is heated and quenched, even if it bends to the right or left in the moving direction, a schematic explanatory view illustrating the following state (however, the quenching liquid injection jacket is FIG. 9 shows a second embodiment according to the present invention.
A partially cut-away schematic plan view showing a vertical on-plane rotating means provided at a connection portion between an upper body portion and a lower body portion of a pair of second connection conductor portions in the high-frequency heating coil body according to the embodiment, FIG. 10 is a schematic plan view showing another vertically rotating means provided on the first connection conductor in the high-frequency heating coil body according to the second embodiment of the present invention, and FIG. FIG. 12 is a schematic plan view showing another vertical rotating means provided on the second connection conductor of the high-frequency heating coil body according to the second embodiment. FIG. 12 is a second embodiment according to the present invention. FIG. 13 is a schematic explanatory view (in comparison with FIG. 8) showing another space portion and its periphery in order to explain another space portion of the high-frequency heating coil body according to the embodiment. Turning the high-frequency heating coil body according to the second embodiment above another vertical plane In schematic cross-sectional view for explaining the means, (B) is a cross-sectional view taken along line A-A of (A).

The high-frequency heating coil body A according to the second embodiment of the present invention has the same length as the high-frequency heating coil body C shown in FIG. Transport direction of the work W (predetermined direction)
Is a high-frequency heating coil body that heats the side surface of the long work W using the current from the coil power supply transformer 1000, and is formed to be substantially symmetrical in the structure with respect to the transport direction of the long workpiece W. The coil power supply transformer 1000 and the high-frequency heating coil body A are fixedly connected as described above. However, the coil power supply transformer 1000 is fixed to a fixture 1600 provided from the base.

The high-frequency heating coil body A includes a long workpiece W
A pair of linear heating conductors 900 and 901 are disposed substantially parallel to the predetermined direction in the vicinity of the position to be heated on the side surface of the pair.
And one end 900 of the pair of heating conductors 900 and 901
a and 901a are separated from the long workpiece W by a predetermined distance or more and are detoured and connected.
0, 901 at the other end 900b, 901b at the base end 920
a, 921a, and a lower body of a pair of substantially U-shaped second connection conductors 920, 921 reaching the upper side of the long work W while detouring at a predetermined distance or more from the long work W 920L, 921L and the second connection conductor 920,
A pair of first bodies 920L, 921L, which are disposed on the upper side of the elongated work W from the upper ends 920b, 921b of the elongated work W in the lower body portions 920L, 921L and are fixedly connected to the coil-feeding transformer side 1000. 2 connection conductor part 92
0, 921, and a lead plate portion 940 connecting the terminal portions 930b, 931b of the upper body portions 930, 931.

The high-frequency heating coil body A is provided with the first
Connection conductor portion 910 and a pair of second connection conductor portions 92
Rotating means 300, 310, 3 for rotating the heating conductors 900, 901 substantially parallel to the elongated workpiece W are respectively provided on the lower body portions 920L, 921L of 0, 921.
20.

Further, the high-frequency heating coil body A includes pressing means 200 for pressing the heating conductors 900 and 901 against the side surface of the long workpiece W, and the heating conductors 900 and 90.
Insulating spacers protruding from the heating conductors 900 and 901 to the side surfaces of the long work W by a predetermined dimension, respectively, so as to maintain a substantially predetermined distance between the first work W and the side surface of the long work W. Units 100, 100, 101, and 101 (see FIGS. 7 and 8).

The spacer portions 100 and 101 are, for example, rectangular plate-like members made of an insulating ceramic such as silicon nitride that can withstand high temperatures. The spacer portions 100 and 101 are symmetrical with each other in plan view, so that the lower surfaces of both ends in the longitudinal direction of the heating conductor portions 900 and 901 are provided, that is, one end 900a, 901a side and the other end 900b, 901.
It is fixed to the lower surface side with the b side.

As a fixing method, the thickness of the heating conductor portions 900 and 901 made of square pipes is relatively thin, and cooling water is passed through the inside of the square pipes. The heating conductors 900, 9
It is often difficult to screw it to 01. Therefore, for example, the following fixing method is used.

As shown in FIGS. 7 and 8, first,
Two bolts 110a are respectively inserted into predetermined positions on the lower surface side of one end 900a, 901a side and the other end 900b, 901b side of the heating conductor parts 900, 901.
The upper side of the head a is fixed by brazing.
At this time, due to the positioning accuracy by brazing, the bolt 1
There is a case where the upper surface side of the head 10a is fixed to be slightly shifted from a predetermined position. In order to make it possible to correct this displacement and to make adjustments after the wear of the spacer portions 100 and 101, a pair of through holes for inserting the bolts 110a previously opened in the spacer portions 100 and 101 are formed by the shafts of the bolts 110a. It is formed in a slightly larger size than the root side of the portion (the portion has no thread, but a thread may be formed).

Next, the threadless portions at the base side of the shaft of the bolt 110a are inserted into the pair of through holes. Then, while correcting the displacement, the nut 110 is provided at the threaded portion on the tip end side of the shaft of the bolt 110a.
b, the spacer portions 100, 10
The fixing of 0, 101, and 101 at the predetermined positions on the lower surface side of the heating conductors 900 and 901 is completed.

A magnetic core (not shown) is usually provided in the heating conductor portions 900 and 901 where the spacer portions 100, 100, 101 and 101 are not provided. Needless to say, this magnetic core (not shown) is not provided at least on the inner side of the heating conductors 900 and 901 facing each other.

The pressing means 200 includes a pair of elastic members 21
0, 210 and a pair of elastic body fixing side plates 220, 22
0 and a top plate 230. Elastic body part 210
Is an elastic body such as a spring or silicone rubber, but if possible, avoids a metal or the like that is easily heated by induction.

The elastic body fixing side plates 220 and 220 and the top plate 230 are preferably insulative, and those which are easily subjected to induction heating are avoided. Elastic body fixing side plate part 220, 2
Reference numeral 20 is located near the center of each of the heating conductors 900 and 901 and on the side where the long workpiece W does not pass.

The top plate 230 is provided with the elastic body fixing side plate 22.
0, 220 are fixed. Top plate 230
The elastic body fixing side plates 220, 2
20 is fixed with a fastening part such as a screw (not shown) made of ceramic or the like which is not easily heated by induction.

The top plate 230 is formed by the upper body 93 of the second connection conductors 920 and 921 of the high-frequency heating coil A.
0 and 931 may be fixed to the upper side thereof, or to the fixing device 1600 provided from the coil power supply transformer 1000 or the base to which the high-frequency heating coil body A is fixed. As shown,
The lower end side of the lead plate portion 940 and the conductive portion 940
b, 940c are fixed to the conductive top plate holding flanges 231a, 231b brazed to 940c by a plurality of screws 232. The top plate 230 has a fixed plate 233 extending at the lower end thereof. This fixing plate 233
The connecting plate 3 of the vertical plane rotating means 300 described later
01 is fixed.

The elastic portions 210, 210 are arranged such that the direction in which the elasticity acts is horizontal, and the heating conductor portions 900 (90)
One end of the heating conductor 900 is perpendicular to 1).
The other end is fixed to the elastic body fixing side plate 220. The fixing of the elastic body portion 210 to the elastic body fixing side plate portion 220 is performed by a fastening part such as a screw made of ceramic or the like which is hardly induced by induction heating.
When the elastic body portion 210 is an elastic body such as silicone rubber which is hardly heated by induction and can be bonded and fixed, an insulating adhesive can be used. When the elastic body 210 is made of a material such as silicone rubber that is hardly subjected to induction heating, the connection to the heating conductor 900 (901) can be made by using an insulating adhesive, and not by connecting but by simply making contact. It may just be done. The elastic bodies 210, 2 fixed in this way
10 is set so that the pressing force due to its elasticity acts at least until the long bending of the long workpiece W.

The coil portion of the high-frequency heating coil body A is made of, for example, a square pipe of good conductivity over substantially the entire length, and includes heating conductors 900 and 901 and a first connection conductor 910.
The second connection conductors 920 and 921 are connected to each other as described above, and form a series of connected coils as a whole. Cooling water for cooling the coil is passed through the internal hole. This cooling water is supplied to the second connection conductor 92.
0, 921 (upper body part 930, 931) end part 93
0b, a water pipe connection port 930c provided in 931b,
Water is supplied and drained by a water pipe (not shown) connected to 931c. In addition, as a part including an exceptional part which does not become the rectangular pipe, vertical on-plane rotating means 300, 300 ', 310, 320, 330, and 34 described later.
There are 0 and 350.

As shown in FIGS. 4 and 5, the vertical-plane rotating means 300 is a part of the first connection conductor 910 and is located on the upper side through which the long workpiece W passes. Is provided. The vertical-plane rotating means 300 is a vertically-turned, substantially T-shaped connecting plate portion 301 and a first connecting conductor portion 910 to which both ends of the connecting plate portion 301 are electrically pressed and connected. Moving means contact portions 911 and 912, and connecting plate portion 3
01 and vertical section rotating means contact portions 911 and 912
Connecting portions 302, 302 for rotatably connecting the
And

Inside the thick portion 301a of the connecting plate portion 301, holes 301b through which cooling water passes are provided except for both ends of the connecting plate portion 301. Portions on both ends of the connection plate portion 301 where the hole portion 301b is not provided are:
The thin portions 301c and 301c are provided. This thin part 3
01c is provided with a through-hole portion 301d into which the fastening portion 302 is inserted.

The water pipe connection port 301 communicating with the hole 301b through which the cooling water flows is provided at the both ends of the thick portion 301a in the longitudinal direction of the first connection conductor portion 910 in FIG.
e, 301e are protrudingly provided. This projecting direction is shown in FIG.
And in a substantially horizontal direction as shown in FIG. However, this protruding direction may be any other direction, but particularly when provided on the lower side, the water pipe connection ports 301e, 301e
Care is taken so that the water tubes 303 made of rubber or the like connected to e do not come into contact with the long workpiece W.

Rotating means contact portions 911 and 912 on a vertical plane
Has a thick part 911a and a thin part 911c. The thick portions 911a and 912a have holes 91 through which cooling water is passed.
1b and 912b are provided. This hole 9
11b and 912b are heating conductor parts 900 and 901 respectively.
Are connected to the holes 900c and 901c (see FIG. 7).

The thick-walled portions 911a and 912a have water pipe connection ports 911 communicating with the holes 911b and 912b, respectively.
e, 912e are protruded. This water pipe connection port 911
e and 912e are the same as the water pipe connection port 301e. The water pipe connection port 911e and the water pipe connection port 91
1e, and between the water pipe connection port 912e and the water pipe connection port 301e near the water pipe connection port 912e.
The connection of the cooling water passages 3 and 303 secures the passage of the cooling water between the contact portions 911 and 912 on the vertical plane.

When the length of the connecting plate 301 is short, it is not necessary to provide the hole 301b through which the cooling water flows and the water pipe connection ports 301e, 301e. In this case, the water pipe 303 is connected between the water pipe connection ports 911e and 912e.

The thin portions 911c and 912c are provided with through-holes 911d and 912d having a similar shape so as to correspond to the through-holes 301d and 301d, respectively.

The fastening part 302 is a fastening part 3 such as a bolt.
And 02a, and an elastic member 302b such as a spring fitted on the shaft portion 302a ₁ of the fastening component portion 302a.
Length of the shaft portion 302a ₁ of the fastening component portion 302a is (depth of hole portion 301d) horizontal thickness of the thin portion 301c and the horizontal thickness of the thin portion 911c (hole portion 911d or 912d of (Depth dimension), and the elastic body 302 is provided at a portion longer than the sum.
b is compressed and fitted. The fastening portions 302, 3
02 to the through holes 301d, 301d, 911d, 912d
, The thin portions 911c and 912c are disposed on the transport direction side of the long workpiece W when viewed from the thin portions 301c and 301c side.

Therefore, the vertical rotation means contact portion 91
1, 912 and the connecting plate portion 301 are pressed and connected by the fastening portion 302 and are electrically connected to each other. In addition, the rotating means contact portions 911 and 912 on the vertical plane and the connecting plate portion 301
Means that the fastening portion 302 has the through-hole portions 301d, 301d, 91
1d and 912d, the fastening portion 302
Are rotatable in the through-hole portions 301d, 301d, 911d, and 912d, and the rotating means contact portion 91 on the vertical surface is provided.
1, 912 and the connecting plate portion 301 are connected to each other with the gap 305, so that the rotating means contact portion 911 on the vertical plane
Reference numeral 912 is rotatable on a vertical plane with respect to the connecting plate portion 301. In order to increase the degree of freedom of the rotation on the vertical plane, a notch may be provided at a corner of the thin portion 301c, 911c, 912c.

As shown in FIG. 6, the vertical plane rotating means 310 is a right half part (same as the left half part) formed by cutting the same one as the vertical plane rotating means 300 in half. And basically the same shape. Vertical plane rotation means 310
Is, for example, as shown in FIG.
20 (the lower body part 920L) of the long workpiece W
Is provided on the upper side through which the light passes.

The vertical rotating means 310 includes vertical rotating means contact portions 922 and 923 of the second connection conductor portion 920 (the lower body portion 920L), and vertical rotating means contact portions 922. , 923 are connected so as to be rotatable on a vertical plane.

Thick portions 922a and 923a and thin portions 922
c, 923c. The thick portions 922a and 923a are provided with holes 922b and 923b, respectively, through which cooling water flows. The holes 922b and 923b communicate with the hole 930e of the upper body 930 of the second connection conductor 920 and the hole 900c of the heating conductor 900, respectively.

The thick-walled portions 922a and 923a have water pipe connection ports 922 communicating with the holes 922b and 923b, respectively.
e and 923e are protruded. Water pipe connection port 922e,
923e is the same as the water pipe connection port 301e. The water pipe 31 is provided between the water pipe connection ports 922e and 923e.
3 by connecting the rotating means contact portion 9 on the vertical plane.
A passage for cooling water is secured between 22, 22 and 923.

The thin portions 922c and 923c have through holes 922d and 923d into which the fastening portions 312 are inserted.
Is provided. The through hole 922d is formed such that the center line thereof coincides with the center line of the through hole 301d on the right side in FIG.

The fastening section 312 is basically the same as the fastening section 302. In other words, the fastening part 312 includes a fastening part 312a such as a bolt and the shaft part 31 of the fastening part 312a.
2a ₁ and an elastic body 312b such as a spring fitted into the body. Length of the shaft portion 312a ₁ of the fastening component portion 312a is horizontal thickness of the thin portion 922c (hole portion 92
2d) and the thickness of the thin portion 923c in the horizontal direction (the depth of the through-hole portion 923d) are set to be larger than the sum, and the elastic body 312b is compressed to a portion longer than the sum. It is fitted. This fastening part 312 is connected to the through-hole part 9.
22d and 923d, the thin portion 923c
Is arranged on the opposite side to the transport direction of the long workpiece W when viewed from the thin portion 922c side.

Therefore, the contact means 92 for the rotating means on the vertical plane
2 and 923 are press-connected by a fastening portion 312 and are electrically connected to each other. In addition, the fastening portion 312 is connected to the through-hole portion 922 between the vertical rotation means contact portions 922 and 923.
d, 923d, the fastening portion 312 is rotatable in the through-hole portions 922d, 923d, and the gap 315 is formed in the vertical rotating means contact portions 922, 923.
Therefore, the vertical rotating means contact portion 923 is rotatable on the vertical surface with respect to the vertical rotating means contact portion 922. In order to increase the degree of freedom of the rotation on the vertical plane, a notch may be provided at the tip corner of the thin portions 922c and 923c.

As described above, when the fastening portion 302 is inserted into the through-hole portions 301d and 911d, the thin portion 911c is inserted.
Are arranged on the side of the long workpiece W in the transport direction when viewed from the thin part 301c side, and the fastening part 312 is
When inserting into the 2d and 923d, the thin portion 923c is
When viewed from the thin portion 922c side, since it is arranged on the opposite side to the transport direction of the long workpiece W, even if the force component in the direction parallel to the transport direction of the long workpiece W, Even if it is applied between the contact portion 911 and the connecting plate portion 301 and between the vertical rotating means contact portions 922 and 923, the structure between them restricts the mutual movement in the parallel direction. Work like that. Thus, electrical interconnection between the two is maintained.

Here, the force component in the direction parallel to the transport direction of the long work W is, for example, when the long work W is heated and bends to the left or right, the pressing means 200
Presses the heating conductor 900, and the space portion 100 and the side surface of the long workpiece W are substantially in point contact with each other, so that a twisting force is applied to the heating conductor 900, and the heating conductor 900 is moved back and forth in the transport direction. In addition to having a force component in either direction, it is generated due to friction because the spacer portion 100 is in contact with the side surface of the long workpiece W being conveyed.

However, since the spacer portion 100 is, for example, a plate-like body made of an insulating ceramic, the friction can be hardly generated, and the force component in the parallel direction due to the friction can be extremely small. On the other hand, since the force of the twist is not so large, the force component in the parallel direction is small. Therefore, the heating conductor portion 900 and the first
There is no possibility that the connection conductor portion 910 and the second connection conductor portion 920 will be deformed.

The vertically rotating means 320 is a structure in which the vertically rotating means 310 is symmetrical left and right, and is provided only on the lower body 921L side of the second connection conductor 921. Therefore, the description is omitted.

The lead plate portion 940 is provided with an insulating plate portion 940a.
And conductive portions 940b and 940c sandwiching both sides of the insulating plate portion 940a. Note that the insulating plate portion 940a is connected to the second connection conductor portion 92.
It also extends over the entire surface between the upper body portions 930 and 931 of 0 and 921 so that the upper body portions 930 and 931 are not short-circuited. A quenching liquid injection jacket (not shown) is provided downstream of the high-frequency heating coil body A.
Are fixedly provided on both sides of the passage area of the long workpiece W.

When the side surface of the long workpiece W is heated by the high-frequency heating coil body A configured as described above and quenched by a quenching liquid jet jacket (not shown), the long workpiece W is heated. Due to distortion during machining of W, etc.
Even if the long workpiece W is bent, the heating conductors 900 and 901 automatically follow the width of the long workpiece W and move so that both sides of the long workpiece W are substantially uniform. It will be described with reference to FIG. 8 that the quenching can be ultimately performed substantially uniformly.

In FIG. 8, the case where the long work W is bent to the left in the transport direction as the side surface of the long work W is heated is exaggerated and schematically illustrated for ease of explanation. Is shown. In addition, if it demonstrates just in case, the front-end | tip part of the long workpiece W will be a heating conductor part 900,
If heating (energization) is not started in a state inserted to the downstream side of the 901 (one end 900a, 901a side), the heating conductors 900 and 901 will be heated to a high temperature with each other. At the start of heating, the tip of the long workpiece W is set between the spacers 100 and 101 on the downstream side. Therefore, the long workpiece W is formed by the spacer portions 100, 100, 101, 10
There is no worry about hitting other than the inner contact surface of 1.

The heating conductors 900 and 901 related to the heating of the high-frequency heating coil A are provided on the four spacers 100 and 1 on the side of the long workpiece W which has begun to bend to the left.
00, 101, and the spacer part 100 on the downstream side of 101
And the elastic body portion 21 via the upstream side spacer portion 101.
0,210.

At this time, the longitudinal direction of the inner contact surface between the downstream spacer portion 100 and the upstream spacer portion 101 is set so that the longitudinal direction of the long workpiece W before bending is changed with respect to the side surface of the curved long workpiece W. W side direction (that is, long workpiece W
In the transport direction), and the vertical rotation means 30
0, 310, 310 rotate, and the spacer portion 1
Since the widths of 00 and 101 are constant, the heating conductor 90
The integral value of the interval distribution between the side surface portion of the long workpiece W facing each of 0 and 901 and the end portion of the heating conductor 900 (901) on the long workpiece W side is substantially equal ( See FIG. 8). In other words, when focusing on the entire length of the heating conductor 900 (901), the heating conductor 900 (901)
And the distance distribution between the side surface of the long workpiece W (that is, the heating position) can be kept substantially constant.

Therefore, the degree of heating on one side surface of the long work W is substantially equal to the degree of heating on the other side surface of the long work W. Therefore, when the high-frequency heating coil body A is used, the heating conductors 900 and 901 related to the heating are automatically turned in the width direction of the long work W in response to the bending of the long work W at the time of heating. , And both sides of the long workpiece W can be heated substantially uniformly. Thereafter, when a quenching liquid is injected from a quenching liquid injection jacket (not shown) to both side surfaces of the long workpiece W after heating, the cooling balance becomes substantially uniform, and the quenching depth ( The curing depth can also be made substantially uniform on both sides.

On the other hand, when the long workpiece W is bent to the right in the transport direction, the heating conductors 900 and 901 need not be shown to the side of the long workpiece W without being shown in the drawing.
Downstream spacer section 101 and upstream spacer section 100
, And is pressed by the elastic portions 210, 210. Needless to say, the same applies to the above case.

By the way, in the high-frequency heating coil body A configured as described above, the rotating means 310, 3
Reference numeral 20 denotes lower body portions 920L and 921L and upper body portions 930 and 931 of the pair of second connection conductor portions 920 and 921.
May be provided at the connection portion with the. In this case, the vertical body rotation means 330 is connected to the lower body 920L.
A description will be given with reference to FIG. 9 as a representative of a portion provided at the connection portion between the upper body portion 930 and the lower body portion 921L of the second connection conductor portion 921. , The rotation means on the vertical plane is merely a structure in which the rotation means 330 on the vertical plane is symmetrical in the left-right direction, and the description thereof is omitted.)

The vertical plane rotating means 330 is used to move the long workpiece W in the lower body 920L of the second connection conductor 920.
On the vertical plane provided at the upper end 920b of the second connecting conductor 920, and the vertical plane rotating means provided on the base end 930a of the upper body 930 of the second connection conductor 920. The contact portion 935 and the contact portion 92 of the rotating means on the vertical plane
Fastening part 33 that connects between 3 and 935 so as to be rotatable on a vertical plane.
And 2.

The vertical rotating means contact portions 923 and 935 have thick portions 923a and 935a and thin portions 923, respectively.
c, 935c. However, the thin portion 935c is
At the base end 930a of the upper body 930, the lower body 9
20L, which protrudes from the upper end 920b. The shape of the thin portion 935c is the same as that of the thin portion 922c.
Is the same as The thick portions 923a and 935a are provided with holes 923b and 930e, respectively, through which cooling water flows. The hole 923b is formed in the hole 9 of the heating conductor 900.
00c side.

The thick portions 923a and 935a communicate with the holes 923b and 930e, respectively.
Water pipe connection ports 923e and 935e protrude from an end of the 930e. The water pipe connection ports 923e and 935e are
It is the same as the water pipe connection port 301e. By connecting the water pipe 333 between the water pipe connection ports 923 e and 935 e, the rotating means contact portions 923 and 935 on the vertical plane are provided.
The passage of cooling water between them is secured.

The thin portions 923c and 935c have through holes 923d and 935d into which the fastening portions 332 are inserted.
Is provided.

The fastening section 332 is basically the same as the fastening section 302. In other words, the fastening part 332 includes a fastening part 332a such as a bolt and the shaft part 33 of the fastening part 332a.
2a ₁ and an elastic body 332b such as a spring fitted into the body. Length of the shaft portion 332a ₁ of the fastening component portion 332a is horizontal thickness of the thin portion 923c (hole portion 92
3d) and the thickness in the horizontal direction of the thin portion 935c (the depth of the through-hole portion 935d), and the elastic body 332b is compressed at a portion longer than the sum. It is fitted. The through-hole portion 935d is formed such that the center line thereof coincides with the center line of the through-hole portion 301d on the right side in FIG.

Therefore, the contact means 92 for the rotating means on the vertical plane
3 and 935 are press-connected by a fastening portion 332 and are electrically connected to each other. In addition, the fastening part 332 is connected to the through-hole part 923 between the vertical rotation means contact parts 923 and 935.
d, 935d, so that the fastening portion 332 is rotatable in the through-hole portions 923d, 935d, and the clearance 335 is provided in the vertical rotation means contact portions 923, 935.
Therefore, the vertical rotating means contact portion 923 is rotatable on the vertical surface with respect to the vertical rotating means contact portion 935.

It is apparent that the above-described vertical rotating means 330 also functions in the same manner as the vertical rotating means 310. And heating conductor portions 900 and 901 related to heating.
However, a description that automatically moves following the width direction of the long work W and can heat both side surfaces of the long work W substantially uniformly is omitted.

In the high-frequency heating coil body A, the vertical rotating means 300 may be a vertical rotating means 340 without the thin portions 301c and 911c, for example, as shown in FIG. This vertical rotation means 340 is
It has rotating means contact portions 916 and 917 on the vertical surface, a connecting plate portion 341 for electrically connecting the rotating means contact portions 916 and 917 on the vertical surface, and fastening portions 342 and 342. A gap 345 is provided between the rotation unit contact portions 916 and 917 on the vertical plane.

Rotation means contact portions 916 and 917 on the vertical plane
And the side surface so as to be bridged while contacting between them (FIG. 10
Upper portions (which may be lower portions) are electrically connected to the connecting plate portion 341 provided on the upper side, and through-hole portions 341 d and 34 for inserting the fastening portions 342 and 342 are provided in portions electrically connected to the connecting plate portion 341.
1d, 916d, and 917d are provided. The hole 91 for passing the cooling water so as to avoid the portion where the through holes 341d, 341d, 916d, and 917d are provided.
6b and 917b are contact parts 916 and 91 on the vertical plane
7. Rotating means contact portion 916 on a vertical surface,
Water pipe connection ports 916e and 917e communicating with the holes 916b and 917b are provided at 917, respectively. The water pipe 34 is provided between the water pipe connection ports 916e and 917e.
3 by connecting the rotating means contact portion 9 on the vertical plane.
The passage of the cooling water between 16, 917 is secured.

[0095] Here, a case is described in which the hole 923b and the like provided in the vertical plane rotating means 300 are omitted from the vertical plane rotating means 340. If there is a space for providing the hole 923b and the like, it is not necessary to omit it.

The fastening part 342 is a fastening part 3 such as a bolt.
And 42a, and an elastic member 342b such as a spring fitted on the shaft portion 342a ₁ of the fastening component portion 342a.
Fastening component portion length of the shaft portion 342a ₁ of the 342a, the connecting plate portion 341 in the horizontal direction thickness motion means contacting portion 916 or 917 exceeded a vertical plane (hole portion depth of 341d)
Is larger than the horizontal thickness dimension (the depth dimension of the through-hole portion 916d or 917d), and the elastic body 342b is compressed and fitted into a portion longer than the sum. The through-hole portion 341d has a center line whose second center line is formed in a pair with the vertical rotating means 340.
It is formed so as to coincide with the center line of the through-hole portion 922d of the rotating means 310, 320 and the like on the vertical plane on the side of 20, 2091.

Therefore, the vertical rotating means contact portion 91
6, 917 and the connection plate portion 341 are press-connected by the fastening portion 342 and are electrically connected to each other. In addition, the rotating means contact portions 916 and 917 on the vertical plane and the connecting plate portion 341
Means that the fastening portion 342 has the through holes 341d, 341d, 91
6d and 917d, the fastening portion 342
Are rotatable in the through holes 341d, 341d, 916d, and 917d, and the rotation means contact portion 916 on the vertical plane is provided.
917 and the connecting plate portion 341 are connected to each other with a gap 345 therebetween, so that the contact portions 916 and 91 on the vertical surface turn means.
7 is rotatable on a vertical plane with respect to the connecting plate 341. In order to increase the degree of freedom of the rotation on the vertical plane, notches may be provided at the corners of the distal ends of the rotation unit contact portions 916 and 917 on the vertical plane.

In the high-frequency heating coil A, the vertical rotating means 310 (320) does not include the thin portions 921c and 922c as shown in FIG. 11, for example.
The rotation means 350 on the vertical plane may be used. The vertical plane rotation unit 350 includes vertical plane rotation unit contact portions 926 and 92.
7, a connecting plate portion 351 for electrically connecting the rotating means contact portions 926 and 927 on the vertical plane, and a fastening portion 352. A gap 355 is provided between the rotation unit contact portions 926 and 927 on the vertical plane.

Rotation means contact portions 926 and 927 on the vertical plane
And a connecting plate portion 35 provided on the side surface (upper side (or lower side in FIG. 11) in FIG. 11) so as to bridge the space therebetween.
1 is connected to one of the fastening portions 35.
2, through holes 351d and 927d are provided, and the other is fixed by brazing or the like.

In order to avoid the portion where the through holes 351d and 927d are provided, the rotating means contact portion 926 on the vertical plane
Is provided with a hole 926b for passing cooling water. In addition, inside the rotating means contact portion 927 on the vertical plane,
A hole 927b for passing cooling water is provided. The water pipe connection ports 926 communicating with the holes 926b and 927b are respectively provided in the rotation unit contact portions 926 and 927 on the vertical plane.
e, 927e are protruded. This water pipe connection port 926
By connecting the water pipe 353 between the e and 927e, the passage of the cooling water between the vertical rotation surface contact means 926 and 927 is secured. The hole 926b for passing the cooling water may extend to the connecting plate 351 side, and the water pipe connecting port 926e may be provided on the connecting plate 351 side. In this case, the water pipe connection port 927e may be provided on the opposite side to the current side.

The fastening part 352 is a fastening part 3 such as a bolt.
And 52a, and an elastic member 352b such as a spring fitted on the shaft portion 352a ₁ of the fastening component portion 352a.
Length of the shaft portion 352a ₁ of the fastening component portion 352a is horizontal thickness of the horizontal thickness motion means contacting portion 927 exceeded and the vertical plane (hole portion depth of 351d) of the connecting plate portion 351 ( (Depth dimension of the through hole 927d), and the elastic body 352 is provided at a portion longer than the sum.
b is compressed and fitted.

Therefore, the vertical rotation means contact portion 92
6, 927 and the connection plate portion 351 are press-connected by the fastening portion 352 and are electrically connected to each other. In addition, the rotation unit contact portions 926 and 927 on the vertical plane and the connecting plate portion 351
Means that the fastening portion 352 is fitted into the through-hole portions 351d and 927d, so that the fastening portion 352 is
27d and can be rotated on the vertical plane because the vertical rotation means contact portions 926 and 927 and the connecting plate 351 are connected with a gap 355 therebetween. I have. In order to increase the degree of freedom of rotation on the vertical plane, a notch may be provided at a corner of the tip of the vertical rotation means contact portions 926 and 927.

In the high-frequency heating coil body A, the vertical plane rotating means having the same function as the vertical plane rotating means 300 and 340 (hereinafter referred to as “vertical plane rotating means having the same function”). The word is abbreviated as “equivalent functional vertical pivoting means”) on the vertical portion of the first connection conductor 910, while the vertical planar pivoting means 310, 320, 330, 350.
The rotation means on the vertical plane having the same function as the second connection conductor 92
The rotating means contact portions on the respective vertical planes may be moved and installed at the vertical portions of 0 and 921. It should be noted that the center line of the through-hole portion of the vertical plane rotation unit 300 (or 340) is the same as that of the vertical plane rotation unit 300 (or 340).
(Or 340) of the second connecting conductors 920 and 921 formed in pairs with the equivalent function vertical turning means.
Needless to say, it is formed so as to coincide with the center line of the through-hole of the rotating means on the vertical plane having the same function as in (0).

In this case, however, the vertical rotating means 3
00, 310, 320, 330, 340, and 350 have the same function. Each of the through-holes (each vertical surface rotating means contact portion) of the vertical rotating device is connected to the first connection conductor portion 910 and the second connecting conductor portion 910, respectively.
It is preferable to provide it on the upper side of the vertical portion with the connecting conductor portions 920 and 921 of FIG. This is because the vertical plane rotation means 30
0, 310, 320, 330, 340, and 350, each through-hole portion (each vertical surface rotating means contact portion) of the vertical rotating device has a first connection conductor portion 910 and a second connecting conductor portion 910. The closer the lower part of the vertical portion to the connecting conductors 920 and 921 is provided, the more the bending of the long workpiece W during heating becomes larger. , Become noticeable. Therefore, a state may occur in which the target heating position exceeds the allowable range in which the predetermined heating is performed.

In addition, the vertical rotation means 310, 320,
When it is desired to provide the vertical rotation means 330 of the same function on the upper body part 930, 931 side of the second connection conductor parts 920, 921, the structure of the high-frequency heating coil body A described above has the following two points. May be changed.

The first point is that the upper body parts 930 and 9
31 and an insulating plate portion 940a (see FIG. 7).
Are in the fixed state, the vertical plane rotation means 310, 32
0, 330 obstructs the vertical rotation of the vertical rotation means. Therefore, the insulating plate portion 940a is provided with the upper surface portion 9 as the equivalent function of the vertical surface rotation device 310, 320 (or 330).
Cut at the lower side than the position relocated to 30, 301 side,
It is adhesively fixed to the upper body part 930 or 931. Accordingly, the degree of freedom of the rotation on the vertical plane is ensured while ensuring insulation between the upper body portions 930 and 931.

The second point is that in the state in which the contact portion on the vertical plane is moved to the upper body portions 930 and 931,
The center line of the through-hole of the contact portion on the vertical plane is the first line.
Does not pass over the connection conductor portion 910 of FIG. That is, in this state, there is no place for providing the rotating means on the vertical surface on the first connection conductor portion 910 side. Therefore, for example, a vertical portion of the first connection conductor 910 is extended upward. The extension length dimension is such that the center line coincides with the center line of the through-hole portion of the rotating means contact portion on the vertical plane installed on the horizontal portion of the first connection conductor portion 910. is there.

In the high-frequency heating coil body A, the spacer portions 100, 100, 101, and 101 may be, for example, spacer portions 105 made of insulating and horizontally rotating rollers as shown in FIG. Spacer section 105
Are connected to the heating conductor 9 via a roller support base (not shown).
00, 901 are fixed to the lower surface side. Also in this case, the spacer portions 105 are the spacer portions 100, 100, 101, 1
Similarly to the case of No. 01, it is provided at least on both ends in the longitudinal direction of the heating conductor portions 900 and 901. At this time, the projecting dimension of the spacer portion 105 toward the long workpiece W is
It is the same as the protrusion dimension at the time of 0, 101.

In the high-frequency heating coil body A, the spacer portions 100, 101, and 105 are
1 may be connected to the upper surface side, not to the lower surface side, may be connected to both upper and lower surfaces, or may be the side surface (the side through which the long workpiece W passes).

In the high-frequency heating coil A, for example,
When a metal spring that is unavoidably subject to induction heating is used as the elastic member 210, one end of the elastic member 210 must be heated so that induction heating is not performed when a high-frequency current flows through the high-frequency heating coil A. It is electrically connected to the conductor 900 (901) by brazing or the like.

In the high-frequency heating coil A, the number of elastic portions 210 of the pressing means 200 is not limited to one, but may be two or more. In this case, the plurality of elastic members 210 are arranged so that the pressing force from the elastic member 210 is applied to one end 900a (901a) and the other ends 900b, 901b of the heating conductor 900 (901) substantially equally. do it.

In the high-frequency heating coil A, if the elastic portion 210 of the pressing means 200 is hardly subjected to induction heating, one end of the elastic portion 210 is connected to the spacer portions 100 and 1.
01 may be attached.

In the high-frequency heating coil body A, the shape of the first connection conductor 910 and the second connection conductors 920 and 921 is not limited to the above description, and may be formed not in a straight line but in a curved line. Good [The same can be said for the main part B of the high-frequency heating coil body C. ]. In this case, it is needless to say that the high-frequency heating coil body A does not have to be completely symmetrical in structure, and it is only necessary to provide a high-frequency heating coil body that is symmetrical in function.

In the high-frequency heating coil body A, when the position to be heated on the side surface of the long workpiece W is different on the left and right, the heating conductor portion 90 is set in accordance with each position to be heated.
Since 0 and 901 are arranged, the high-frequency heating coil body A is naturally not symmetrical, and accordingly, the shapes of the first connection conductor 910 and the second connection conductors 920 and 921 are appropriately changed in design. [The main body B of the high-frequency heating coil C is
The same can be said. ].

In the high-frequency heating coil A, the fastening portion 3
02 is inserted into the through-hole portions 301d and 911d, the thin portion 911c is arranged on the opposite side to the transport direction of the long workpiece W when viewed from the thin portion 301c side, and the fastening portion 3
When inserting 12 into the through-holes 922d and 923d, the thin portion 923c may be arranged on the transport direction side of the long workpiece W when viewed from the thin portion 922c side.

The other arrangement, that is, the fastening portion 30
2 is inserted into the through-holes 301d and 911d, the thin portion 911c is disposed on the side of the long workpiece W in the transport direction when viewed from the thin portion 301c side, and the fastening portion 312 is inserted into the through-hole portion. When inserting into the 922d and 923d, the thin portion 9
23c is a long workpiece W viewed from the thin portion 922c side.
Or the thin portion 9
11c is a long workpiece W viewed from the thin portion 301c side.
And the thin portion 923c.
May be arranged on the opposite side of the transport direction of the long workpiece W when viewed from the thin portion 922c side. However, in this case, since the above-described two types of parallel force components are directly applied to the elastic body 312b of the fastening portion 302, the elastic force of the elastic body 312b is reduced by the two kinds of parallel force components. Be much larger than

In the above description, the long workpiece W is transported by the transport device H.
May be fixed, and the high-frequency heating coil body A and the coil power supply transformer 1000 connected to the high-frequency heating coil body A may be moved on the long workpiece W, and the description thereof is omitted. [The same applies to (the main body B of) the high-frequency heating coil body C. ].

In the above description, the high-frequency heating coil bodies A and C are fixedly connected to the lower end side of the coil power supply transformer 1000, but they may be installed upside down in this connected state.

In the above description, the high-frequency heating coil body A requires the water pipes 303, 313 and the like. However, a method of omitting the water pipes 303 and 313 and providing another cooling water passage is described. This will be described below with reference to FIG. Specifically, FIG. 13A is a schematic diagram illustrating a half of a vertical plane rotation unit 300 ′ corresponding to the left half (left half side in FIG. 5) of the vertical plane rotation unit 300. It is sectional drawing, (B) is an AA line schematic sectional drawing of (A). The vertical plane rotation means 300 'is
Points different from 0 are as follows.

The water pipe 303 and the water pipe connection ports 301e and 912e, which were provided on the vertical plane rotating means 300 (FIG. 5), are removed, and the vertical cooling means 300 '(FIG. 13) is provided with a projecting cooling. There is no water passage. The fastening part 302a '(FIG. 13) of the fastening part 302' corresponding to the fastening part 302a of the fastening part 302 of the vertical rotation means 300 (FIG. 5) has a water passage formed at the center thereof. It has a cavity 307 'and a plurality of water passage through-holes 308' extending from the water passage cavity 307 'to the outer end of the side surface of the fastening part 302a'. In addition, the water-permeable through hole 3
08 'on the upper and lower sides, a packing portion 3 made of an O-ring or the like
09 'is attached. The elastic body 302b is
It is provided similarly to the fastening portion 302.

The hole 301b provided in the connecting plate portion 301 (FIG. 5) through which the cooling water is passed is connected to the connecting plate portion 30.
1 (FIG. 5), the range of the connecting plate portion 301 ′ (FIG. 13) is such that when the fastening portion 302 ′ (FIG. 13) is inserted into the through-hole portions 301d and 912d, the water-permeable through-hole portion is formed. 30
8 'communicates with an expansion hole portion 301f' (FIG. 13) provided around a portion located in the through hole portion 301d. The hole 912b provided in the vertical rotating means contact portion 912 (FIG. 5) through which the cooling water passes is a vertical surface corresponding to the vertical rotating means contact portion 912 (FIG. 5). In the upper rotating means contact portion 912 '(FIG. 13), the range is such that when the fastening portion 302' is inserted into the through-hole portions 301d and 912d, another water-passing through-hole portion 308 'is formed. Extension hole portion 912f 'provided around a portion located in the portion 912d.
It is communicated to.

As a result, the hole 912b → the expanded hole 91
2f '→ water passage through hole 308 ′ → water passage cavity 307 ′
→ Water-permeable through hole 308 ′ → Expansion hole 301f ′ → Hole 3
A cooling water passage 01b is secured. In addition, since the packing portion 309 ′ made of an O-ring or the like is attached to the upper and lower sides of the water passage through hole 308 ′, the vertical rotating means contact portion 912 ′ is attached to the connecting plate portion 301 ′. Even when it turns, there is no leakage of cooling water.

FIG. 13 shows a vertical plane rotating means 310.
It also corresponds to the right half of FIG. 6 (the part excluding 930 in FIG. 6). That is, the above-mentioned change from the above-described vertical plane rotation means 300 (FIG. 5) to the vertical plane rotation means 300 '(FIG. 13) is different from the above-described vertical plane rotation means 310 (FIG. 6).
The same can be applied to the above. Further, the present invention can be similarly applied to the vertically rotating means 340 (FIG. 10). However, since the connecting plate portion 341 (FIG. 10) is illustrated without a hole through which the cooling water is passed, the description of the connecting plate portion 301 (FIG. 5) is as follows. Holes through which the cooling water passes between the two through holes 341d are provided as in FIG. Vertical turning means 35 shown in FIG.
The same applies to 0. However, in this case, the description of the connecting plate portion 301 (FIG. 5) with the content of
A through hole extending from the through-hole portion 351d of the vertically rotating means 350 to the hole 926b of the vertically rotating means contacting portion 926 is provided.

[0124]

As described above, the high-frequency heating coil body according to the present invention is a high-frequency heating coil body for heating the side surface of a long work relatively moving in a predetermined direction,
A pair of linear heating conductors disposed substantially parallel to the predetermined direction in the vicinity of the position to be heated on the side surface of the long workpiece,
A first connecting conductor portion that is detour-connected between the ends of the pair of heating conductor portions by a predetermined distance or more from the long work, and the other end of each of the pair of heating conductor portions as a base end, A pair of second connection conductors fixedly connected to the coil power supply transformer side while detouring at a predetermined distance or more from the work may be provided.

Therefore, in the case of the high-frequency heating coil body according to the present invention, the conductor portions (connection conductor portions) of the coil other than the pair of linear heating conductor portions are detoured by a predetermined distance or more from the long workpiece. Therefore, the conductor portion (connection conductor portion) of the coil other than the heating conductor portion does not heat any part of the side surface of the long workpiece other than a certain region in the desired height direction to be heated. Therefore, in the case of the high-frequency heating coil body according to the present invention, it is possible to appropriately heat an arbitrary predetermined area in the height direction to be heated on the side surface of the long workpiece.

The high-frequency heating coil according to the present invention is provided on the first connection conductor and the pair of second connection conductors, and rotates the heating conductor substantially in parallel with the long work. Rotating means on a vertical surface, pressing means for urging the heating conductor toward the side of the long workpiece, and heating to maintain the heating conductor and the long workpiece at a substantially predetermined distance. It is preferable to include an insulating spacer portion provided to protrude from the conductor portion to the side surface of the long work.

Therefore, in the case of the high-frequency heating coil body according to the present invention, even if the coil power supply transformer and the high-frequency heating coil body are fixed, the first connection conductor portion and the pair of second Since the heating conductor has a movable portion, which is a vertical rotating means provided on the connecting conductor portion, the heating conductor portion can rotate on the vertical surface. The rotatable direction is a direction in which the heating conductor is substantially parallel to the long workpiece.

A spacer is connected to the heating conductor so as to protrude toward the side surface of the long workpiece, and the heating conductor is pressed by the pressing means and the vertical rotating means. It is urged to the side of the long workpiece.
That is, the heating conductor portion comes into pressure contact with the side surface of the long workpiece via a predetermined dimension called the spacer portion. Therefore,
The distance between the heating conductor and the side surface of the long work is constant.

[0129] Even if the long work relatively moving in the predetermined direction is heated and turned to the right or left in the moving direction, the heating conductor is kept in contact with the pressing means and the vertical rotating means. As a result, the pressing member keeps pressing and contacting the side surface of the long work via the spacer portion. Therefore, in the case of the high-frequency heating coil body according to the present invention, when focusing on the entire length of the heating conductor, the distance distribution between the heating conductor and the side surface (that is, the heating position) of the long workpiece is kept almost constant. Since it is possible to continue, it is possible to appropriately heat the side surface of the long work while automatically following the bending of the long work. Therefore, the quenching liquid injection jacket provided on the downstream side of the high-frequency heating coil body can ultimately appropriately quench the side surface of the long workpiece.

Further, in the case of the high-frequency heating coil according to the present invention, the coil power supply transformer and the high-frequency heating coil are fixedly connected to each other as in the prior art. Since the rotating means on the vertical plane is a movable part, the long work is heated, so that it bends to the right or left in the moving direction, and accordingly, the heating conductor of the high-frequency heating coil body is moved. When moving, it is not necessary to move even the coil feeding transformer according to the bending. Therefore, the object can be achieved without a large-scale configuration.

In the above description, the means for turning on the vertical plane provided on the first connection conductor is, for example, a part of the first connection conductor, and And a connecting plate portion connecting between the pair of separated vertical rotating device contact portions, and a connecting plate portion and a vertical rotating device contact portion. A through-hole portion provided so as to penetrate both of them in the horizontal direction at a portion where the contact portion contacts, a fastening component portion inserted into the through-hole portion, and an elastic body portion fitted into the fastening component portion. Should be provided.

On the other hand, the vertical rotating means provided on each of the pair of second connection conductors may be, for example, a part of the second connection conductor. A pair of vertical rotating means contact portions that are in contact with each other in a separated state, and a pair of the vertical rotating means contact portions are provided so as to penetrate both in a horizontal direction at a portion where the vertical rotating means contact portions contact each other. What is necessary is just to have the through-hole part provided, the fastening part part inserted in this through-hole part, and the elastic body part fitted in this fastening part part.

Further, the fastening part has a water passage cavity formed in the center thereof and a water passage through hole extending from the water passage cavity to the outer end of the side surface of the fastening part. It may be provided.

Accordingly, since any of the vertical rotation means can be realized only with a relatively simple mechanism, the high-frequency heating coil according to the present invention can be realized at a relatively low cost.

[Brief description of the drawings]

FIG. 1A is a schematic side view showing a high-frequency heating coil body according to a first embodiment of the present invention and its peripheral mechanism, and FIG. 1B is a first embodiment according to the present invention. FIG. 1 is a schematic front view showing a high-frequency heating coil body and its peripheral mechanism according to the first embodiment (however, a transfer device is not shown).

FIG. 2 is a perspective view showing a main body of the high-frequency heating coil according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a high-frequency heating coil body according to the first embodiment of the present invention.

FIG. 4 is a schematic perspective view showing a high-frequency heating coil according to a second embodiment of the present invention.

FIG. 5 is a schematic plan view showing a vertically rotating means provided on a first connection conductor of a high-frequency heating coil body according to a second embodiment of the present invention.

FIG. 6 is a partially cut-away schematic plan view showing a vertically rotating means provided on a second connection conductor of a high-frequency heating coil body according to a second embodiment of the present invention.

FIG. 7 is a schematic sectional view showing a high-frequency heating coil body according to a second embodiment of the present invention.

FIG. 8 shows a heating conductor of a high-frequency heating coil according to a second embodiment of the present invention, in which a long workpiece is heated;
FIG. 3 is a schematic explanatory view for explaining a state in which the quenching is followed to the right or left in the moving direction thereof (however, a quenching liquid injection jacket is not shown).

FIG. 9 is a vertical plane pivoting means provided at the connection between the upper body and the lower body of the pair of second connection conductors in the high-frequency heating coil according to the second embodiment of the present invention. FIG. 4 is a schematic plan view partially broken away.

FIG. 10 is a schematic plan view showing another vertically rotating means provided on the first connection conductor in the high-frequency heating coil according to the second embodiment of the present invention.

FIG. 11 is a schematic plan view showing another vertically rotating means provided on the second connection conductor of the high-frequency heating coil body according to the second embodiment of the present invention.

FIG. 12 also shows another space portion and its periphery for explaining another space portion of the high-frequency heating coil body according to the second embodiment of the present invention (a comparison relationship with FIG. 8). FIG.

FIG. 13 is a schematic cross-sectional view for explaining another vertically rotating means of the high-frequency heating coil body according to the second embodiment of the present invention, wherein FIG. It is sectional drawing in the A line.

14A is a schematic side view showing a conventional first high-frequency heating coil body and its peripheral mechanism, and FIG. 14B is a schematic view showing a conventional first high-frequency heating coil body and its peripheral mechanism. FIG. 3 is a schematic front view (however, a transport device is not shown).

FIG. 15 is a perspective view showing a first conventional high-frequency heating coil body.

FIG. 16 is a diagram illustrating a conventional long-frequency heating coil body, in which high-frequency heating is performed on a long workpiece while quenching is completed by a quenching liquid jetting jacket. FIG. 3A is a schematic explanatory view for explaining that a phenomenon that the quenching depth of the steel becomes inappropriate becomes large.
Shows a state in which the long workpiece starts to be bent, and FIG.

FIG. 17 is a perspective view showing a second conventional high-frequency heating coil body.

[Explanation of symbols]

 Reference Signs List A high-frequency heating coil body W long work 100 spacer section 101 spacer section 200 pressing means 300 vertical rotating means 310 vertical rotating means 320 vertical rotating means 900 heating conductor section 901 heating conductor section 910 first Connection conductor 920 second connection conductor 921 second connection conductor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05B 6/10 H05B 6/36 C21D 1/10 C21D 1/42

Claims (4)

(57) [Claims] 1. A high-frequency heating coil body for heating a side surface of a long work relatively moving in a predetermined direction, wherein the high-frequency heating coil body is disposed near a heating target position on the side surface of the long work in substantially parallel with the predetermined direction. A pair of linear heating conductors to be provided, a first connection conductor that detour-connects one end of the pair of heating conductors at least a predetermined distance from the long workpiece, and the pair of heating conductors the other end of each of the parts and the proximal end, Bei a second connection conductor portions of the pair being fixedly connected to the coil power supply transformer side while bypassing apart a predetermined distance or more from the elongated workpiece
Eteori, the first connection conductor portion and a pair of set and a second connection conductor portions
And the heating conductor is rotated substantially parallel to the long workpiece.
A rotating means on a vertical surface to be pressed, and a pressing force for urging the heating conductor toward the side surface of the long workpiece.
Means and a substantially predetermined distance between the heating conductor and the long workpiece.
From the heating conductor to the side of the long workpiece to maintain
And an insulated spacer section
And a high-frequency heating coil body. 2. The semiconductor device according to claim 1, wherein said first connection conductor is provided on said first connection conductor.
The rotation means on the vertical plane is a part of the first connection conductor.
Thus, a pair of separated rotating means contact portions on the vertical surface,
Between a pair of separated rotating means contact portions on a vertical surface.
A connecting plate portion, and a connecting portion of a rotating means on a vertical plane with the connecting plate portion.
So that it passes through both parts horizontally
And a hole provided in each of the holes, and inserted into the hole.
Part to be fastened and a bullet fitted into this part
The high-frequency heating coil body according to claim 1, further comprising a sex body . 3. A pair of second connecting conductors, respectively.
The provided vertical rotating means is provided with the second connection guide.
A part of the body that is in a separated state
Vertical plane rotation means contact portion, and a pair of vertical plane rotation hands
Horizontal contact on the part where the step contact part is in contact with each other
Through holes provided so as to penetrate through
Fastening part inserted into the through hole of
And an elastic body portion to be fitted.
The high-frequency heating coil body according to claim 1 . 4. The fastening part is formed on the center side thereof.
Of the water passage cavity and the fastening part from the water passage cavity
It is characterized by having a water passage cavity reaching the outside of the side
The high-frequency heating coil according to claim 2 or 3, wherein