JPH0711433Y2 - Half open saddle type high frequency heating coil mounting structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a semi-open saddle type high frequency heating coil (hereinafter also simply referred to as a heating coil).

[0002]

2. Description of the Related Art The prior art will be described below. As the work, a multi-stage shaft used in a traveling system of an automobile or the like is adopted, and a conventional mounting structure of a heating coil for induction heating the outer surface of the multi-stage shaft will be described with reference to FIGS. 8 is a plan view, FIG. 9 is a side view, FIG. 10 is a plan view of a coil support mounting plate, FIG. 11 is a schematic perspective view of a heating coil, and FIG. 12 is a perspective view of a multistage shaft.

As shown in FIG. 12, the multistage shaft 90 includes a step 94,
By providing 95, a small diameter portion 91 and a middle diameter portion 92 are formed above and below the step 94, and a middle diameter portion 92 and a large diameter portion 93 are formed above and below the step 95, respectively. Small diameter part 91, step 94,
To heat the medium diameter part 92 and the step 95 for hardening,
The heating coil 100 shown in 11 is used.

The heating coil 100, as shown in FIG.
A conductor 11 connected in series between a pair of power supply conductors 10 and 20.
˜19, and while rotating the multistage shaft 90 around the shaft 90a, the small diameter portion 91 is formed by the conductors 11, 12, 18 and 19.
A step 94 by conductors 13 and 17 and conductors 14 and 16
The intermediate diameter portion 92 is heated by the conductor 15, and the step 95 is heated by the conductor 15.

The heating coil 100 is fixed to a coil mount (not shown) which constitutes a part of the induction hardening apparatus. That is, as shown in FIGS. 8 and 9, the heating coil 100
Are attached to the coil support frames 200 and 200A. The coil supporting frame 200 is arranged so as to face each other, and is paired with a coil supporting member 210 connected by a connecting member 205.
It has 220. Further, the coil support frames 200A arranged below the coil support frame 200 are arranged so as to face each other.
A pair of coil support members 210 connected by connecting members 205A
A and 220A (disposed below the coil supporting members 210 and 220, respectively).

The upper portions of the conductors 12 and 18 of the heating coil 100 are fixed to the coil supporting members 210 and 220 by bolts.
It is attached to the tip of 101 by brazing, and the lower part is attached to the tip of a bolt 101 fixed to the coil supporting members 210A and 220A of the coil supporting frame 200A by brazing.

The coil support members 210, 220, 210A, 220A are
For example, it is made of cloth-filled bakelite, and the ends are bolts 301.
It is fixed to the plate-shaped coil supporting member mounting plate 900 by. 230 is the coil support material 210, 220, 210A, 22
It is a screw hole provided on the end face of 0A, and a bolt 301 is screwed into it. Further, 23 is an insulating plate interposed between the power supply conductors 10 and 20.

As shown in FIG. 10, the coil supporting member mounting plate 900 has a substantially rectangular shape, and a bolt 301 penetrates through it.
Each of the bolt holes 302a is bored, and a pair of notches 310 provided at both ends are engaged with a guide provided on the coil mounting base to which the coil supporting material mounting plate 900 is mounted, so that the coil supporting material is The vertical position of the mounting plate 900 is set. That is, the dashed-dotted line is the coil support mounting plate
The coil supporting member mounting plate 900 is fixed to the coil mounting base so that the vertical position reference line 80 of the 900 passes through the center of the notch 310.

Reference numeral 303 is a bolt hole into which a bolt (not shown) for fixing the coil supporting member mounting plate 900 to the coil mounting base is inserted, and D1, L1 and M1 are respectively bolt holes 302a.
The diameter, horizontal spacing, and vertical spacing. The bolt 30
1 is inserted into the bolt hole 302a and screwed into the screw hole 230, so that the coil supporting members 210, 220, 210A, 220A
To the coil support mounting plate 900. The coil supporting member mounting plate 900 is provided with a counterbore (not shown) for accommodating the bolt head 301a of the bolt 301.

[0010]

However, the conventional heating coil mounting structure described above has the following problems. The size of the multi-stage shaft 90 that is the work is various,
If the size is larger than the size of the equal joint 90 described above, the heating coil 100 also becomes large. Therefore, the coil support material and the coil support material mounting plate 300B corresponding to the increased heating coil are manufactured each time. . As shown in FIG. 10, this coil support material mounting plate 300B is necessarily larger than the coil support material mounting plate 900, and has a diameter D2 of bolt holes 302b corresponding to the bolt holes 302a, a horizontal interval L2, and a vertical interval L2.
M2 is also the diameter D1 of the bolt hole 302a, horizontal spacing L1 and vertical spacing M1.
And each is different.

That is, conventionally, different coil supporting members and coil supporting member mounting plates are manufactured for each size of the multi-stage shaft 90, which is troublesome and requires a high-frequency heating device for a work such as a multi-stage shaft. It also contributed to the high cost. The present invention was made in view of the above circumstances, and one half-open saddle type heating coil is supported by a pair of coil supporting members connected horizontally by a connecting member and facing each other. However, in the heating coil mounting structure for fixing the coil supporting material to the coil supporting material mounting plate, it is possible to reduce the labor for manufacturing the coil supporting material mounting plate, and thus to reduce the cost of, for example, a multistage high frequency heating device. It is an object of the present invention to provide a mounting structure for a heating coil capable of

[0012]

In order to solve the above problems, the heating coil mounting structure of the present invention is a pair of horizontally arranged so as to support and face a semi-open saddle type high frequency heating coil. A coil supporting material, a connecting material for connecting these coil supporting materials, a coil supporting material mounting plate, and a bolt for fixing the coil supporting material to the coil supporting material mounting plate,
In a mounting structure of a semi-open saddle type high frequency heating coil having a screw hole provided in the coil supporting member so that the bolt can be screwed, a pair of a pair of holes having a step is formed in the coil supporting member mounting plate. Through holes, bolt plates having shapes corresponding to the shapes of these through holes, inserted into the through holes, abutting against the step, and provided in pairs according to the size of the heating coil, and these bolts. Each of the plates has a bolt hole penetratingly formed so as to correspond to the screw hole, and the bolt is inserted into the bolt hole and screwed into the screw hole so that the coil supporting member has the coil supporting member. It is fixed to the mounting plate.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 7 are drawings for explaining the present embodiment, FIG. 1 is a partial sectional plan view, FIG. 2 is a side view, and FIG. 3 is a sectional explanatory view of a coil supporting member and a coil supporting member mounting plate, 4 is a perspective view of the bolt plate, FIG. 5 is a front view of the coil supporting material mounting plate in a state where the bolt plate is mounted on the coil supporting material mounting plate,
FIG. 6 is a front view of the coil supporting material mounting plate, and FIG. 7 is A- of FIG.
It is an A line arrow sectional view. The same components as those described in the conventional mounting structure of the heating coil are designated by the same reference numerals.

As shown in FIGS. 1, 2 and 3, the heating coil mounting structure of this embodiment supports the heating coil 100,
A coil supporting frame 200 having a pair of coil supporting members 210 and 220 which are connected by a connecting member 205 and which are arranged in a horizontal direction so as to face each other and a heating coil 100 are supported, and the connecting member 20
A coil support frame 200A having coil support members 210A and 220A connected by 5A and horizontally arranged so as to face each other.
, The coil support material mounting plate 300, and the coil support materials 210, 22
0, 210A, 220A is fixed to the coil support material mounting plate 300, and the coil support material 210, 220, 210A, 220A coil support material mounting plate 300 so that the bolt 301 is screwed.
And four screw holes 230 provided on the end surface of the attachment. If it is difficult to form the screw holes 230 in the coil support members 210, 220, 210A, 220A, form a cylindrical hole,
Screw-shaped metal tube in this hole (eg Helisert under the trade name)
Etc. may be inserted.

The heating coil mounting structure of this embodiment also includes a pair of the same oblong through holes 307 formed in the coil supporting member mounting plate 300 as shown in FIG. 6, and these through holes.
It is equipped with bolt plates 500 (FIG. 4) which are inserted in 307 and are provided in pairs one by one according to the size of the heating coil 100. The through hole 307 includes a step 304, a large diameter portion 306 on one side of the step 304 and a small diameter portion 305 on the other side of the step 304, and the cross sectional area of the large diameter portion 306 is larger than that of the small diameter portion 305. Has been done.

The pair of bolt plates 500 have the same shape and have a through hole 307.
Of the coil supporting members 210 and 220, that is, the through holes are formed so as to correspond to the screw holes 230 of the coil supporting members 210 and 220, that is, to correspond to the number, diameter and vertical interval of the screw holes 230. It has a bolt hole 501 installed.

Note that L (FIG. 6) is the horizontal distance between the pair of through holes 307. Then, the coil support material 210 of the coil support frame 200 provided corresponding to the size of the heating coil 100 is used.
, 220 and coil support 210A, 2 of coil support frame 200A
20A is formed such that when these coil support members 210, 220, 210A, 220A support the heating coil 100, the horizontal interval between the screw holes 230 is L 1. The coil supporting material mounting plate 300 is provided with the bolt holes 303 and the cutouts 310 as in the conventional coil supporting material mounting plate 900.

Next, assembly of the heating coil mounting structure of this embodiment will be described. First, the conductors 12 and 18 of the heating coil 100 are fixed in advance by brazing or the like to the tips of the four bolts 101 fixed to the coil support members 210, 220, 210A, and 220A, respectively. Insert the bolt plate 500 into the large diameter part 306 of the through hole 307 of the coil support mounting plate 300, and
Abut. Then, the coil support materials 210, 220, 210
With the side surfaces of the ends of A and 220A in contact with the small diameter portion 305 side of the through hole 307 of the coil support mounting plate 300, press the bolt 301
Is inserted into the bolt hole 501 of the bolt plate 500 and further screwed into the screw holes 230 of the coil support members 210, 220, 210A and 220A to fix the coil support members 210 and 220 to the coil support member mounting plate 300. Finish the assembly.

Next, in order to attach a heating coil having a size different from that of the heating coil 100 to the coil supporting material mounting plate 300, a bolt plate corresponding to the heating coil having a different size is attached to the coil supporting material mounting plate 300. After inserting into the through hole 307,
The coil supporting material supporting the heating coil of a different size may be fixed to the coil supporting material mounting plate 300 in the same manner as described above.

[0020]

As described above, the heating coil mounting structure of the present invention includes a pair of coil supporting members horizontally arranged so as to support the semi-open saddle type high frequency heating coil and face each other. A connecting member for connecting the coil supporting member, a coil supporting member mounting plate, a bolt for fixing the coil supporting member to the coil supporting member mounting plate, and a coil supporting member provided on the coil supporting member so that the bolt is screwed. A half open saddle type high frequency heating coil mounting structure having a screw hole, and a pair of through holes formed in the coil supporting member mounting plate and having a step,
Bolt plates each having a shape corresponding to the shape of these through holes, inserted into the through holes, abutting on the step, and provided in pairs corresponding to the size of the heating coil, and each of these bolt plates. A bolt hole penetratingly provided to correspond to the screw hole, wherein the bolt is inserted into the bolt hole and screwed into the screw hole to fix the coil supporting member to the coil supporting member mounting plate. To be done.

Therefore, according to the heating coil mounting structure of the present invention, even if the size of the heating coil is changed, it is necessary to replace the coil supporting member mounting plate with one corresponding to the heating coil of a different size. Instead, simply select the bolt plate corresponding to the size of the heating coil and insert it into the through hole of the coil supporting material mounting plate, and then fix the coil supporting material to the coil supporting material mounting plate with bolts.
When various heating coils corresponding to the size of the work are used, no labor is required, and the cost of the high frequency heating device using such a heating coil can be reduced.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view of an embodiment of the present invention.

FIG. 2 is a side view of an embodiment of the present invention.

FIG. 3 is a cross-sectional explanatory view of a coil supporting member and a coil supporting member mounting plate according to an embodiment of the present invention.

FIG. 4 is a perspective view of a bolt plate according to an embodiment of the present invention.

FIG. 5 is a front view of the coil supporting material mounting plate of the embodiment of the present invention with a bolt plate attached to the coil supporting material mounting plate.

FIG. 6 is a front view of a coil support mounting plate according to an embodiment of the present invention.

7 is a cross-sectional view taken along the line AA of FIG.

FIG. 8 is a plan view of a conventional mounting structure for a heating coil.

FIG. 9 is a side view of a conventional mounting structure for a heating coil.

FIG. 10 is a plan view of a coil supporting material mounting plate of a conventional mounting structure of a heating coil.

FIG. 11 is a schematic perspective view of a heating coil.

FIG. 12 is a perspective view of a multistage shaft.

[Explanation of symbols]

 100 Heating coil 205, 205A Connection material 210, 220, 210A, 220A Coil support material 230 Screw hole 300 Coil support material mounting plate 301 Bolt 304 Step 307 Through hole 500 Bolt plate 501 Bolt hole

Claims (1)

[Scope of utility model registration request] 1. A pair of coil supporting members arranged in a horizontal direction so as to support and face a semi-open saddle type high frequency heating coil, a connecting member connecting these coil supporting members, and a coil supporting member mounting plate. And a bolt for fixing the coil supporting member to the coil supporting member mounting plate, and a semi-open saddle type high frequency heating coil having a screw hole provided in the coil supporting member so that the bolt is screwed. In the structure, a pair of through holes having a step and formed in the coil supporting material mounting plate,
Bolt plates each having a shape corresponding to the shape of these through holes, inserted into the through holes, abutting on the step, and provided in pairs corresponding to the size of the heating coil, and each of these bolt plates. A bolt hole penetratingly provided to correspond to the screw hole, wherein the bolt is inserted into the bolt hole and screwed into the screw hole to fix the coil supporting member to the coil supporting member mounting plate. A mounting structure for a semi-open saddle type high frequency heating coil, which is characterized in that: