JPH0517991U - Half open saddle type high frequency heating coil mounting structure - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To simplify the mounting structure of the half-open saddle type heating coil and reduce the cost of the high frequency heating device. [Structure] Coil supporting members 210 and 220 that support the heating coil 100 and are horizontally arranged so as to face each other, a connecting member 205A that connects the heating coil 100 supporting member, and a coil supporting member mounting plate 300, A heating coil 10 having a bolt 301 for fixing the coil supporting member to the coil supporting member mounting plate and a screw hole 230 provided in all the coil supporting members so that the bolt is screwed.
In the mounting structure of No. 0, a pair of through holes 307 having a step 304 formed in the coil supporting material mounting plate and a shape corresponding to the shape of the through hole are inserted into the through holes and contact the step. In addition, each bolt plate is provided with a pair of bolt plates 500 corresponding to the size of the heating coil, and a bolt hole 501 is formed through each bolt plate so as to correspond to a screw hole. The bolt is inserted into the bolt hole. All the coil supporting materials are fixed to the coil supporting material mounting plate 300 by being screwed into the screw holes 230.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 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]

[Prior Art]

 The conventional technique will be described below. As a workpiece, 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 inductively heating the outer surface of the multi-stage shaft will be described with reference to FIGS. FIG. 8 is a plan view, FIG. 9 is a side view, FIG. 10 is a plan view of the coil support mounting plate, FIG. 11 is a schematic perspective view of the heating coil, and FIG. 12 is a perspective view of a multistage shaft.

As shown in FIG. 12, the multistage shaft 90 is provided with steps 94 and 95 so that a small diameter portion 91 and a middle diameter portion 92 are provided above and below the step 94, respectively, and a middle diameter portion is provided above and below the step 95, respectively. A portion 92 and a large diameter portion 93 are formed. To heat the small diameter portion 91, the step 94, the medium diameter portion 92, and the step 95 for quenching, the heating coil 100 shown in FIG. 11 is used.

As shown in the figure, the heating coil 100 includes conductors 11 to 19 connected in series between a pair of power supply conductors 10 and 20, and has a multi-stage shaft 90 centered around a shaft 90a. While rotating, the conductors 11, 12, 18 and 19 heat the small diameter portion 91, the conductors 13 and 17 heat the step 94, the conductors 14 and 16 heat the medium diameter portion 92, and the conductor 15 heats the step 95. To do.

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

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

The coil supporting members 210, 220, 210A, 220A are made of, for example, cloth-baked bakelite, and the ends thereof are fixed to the flat coil supporting member mounting plate 900 by bolts 301. Reference numeral 230 is a screw hole provided in the end surface of the coil support members 210, 220, 210A, 220A, into which the bolt 301 is screwed. Reference numeral 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 is provided with four bolt holes 302 a through which the bolt 301 penetrates. The pair of notches 310 are engaged with a guide provided on the coil mounting base to which the coil supporting material mounting plate 900 is mounted, and the vertical position of the coil supporting material mounting plate 900 is set. That is, the dashed-dotted line is the vertical position reference line 80 of the coil supporting material mounting plate 900, and the vertical position reference line 80 passes through the center of the notch 310 so that the coil supporting material mounting plate 900 is fixed to the coil mount.

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 the diameter of the bolt hole 302a, the horizontal interval and the vertical distance, respectively. It is an interval. The bolts 301 are inserted into the bolt holes 302a and screwed into the screw holes 230 to fix the coil supporting members 210, 220, 210A and 220A to the coil supporting member mounting plate 900. The coil support mounting plate 900 is provided with a counterbore (not shown) that accommodates the bolt head 301a of the bolt 301.

[0010]

[Problems to be solved by the device]

 However, the conventional heating coil mounting structure described above has the following problems. The size of the multi-stage shaft 90, which is a workpiece, varies, and when 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 corresponding to the larger heating coil is required. Material and coil support material mounting plate 300B 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 a bolt hole 302b corresponding to the bolt hole 302a, a horizontal interval L2, and a vertical interval M2. Also, the diameter D1 of the bolt hole 302a is different from the horizontal distance L1 and the vertical distance M1.

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 high-frequency heating of a work such as a multi-stage shaft. It also contributed to the high cost of the device. The present invention has been made in view of the above circumstances, and includes a pair of coil supporting members in which one semi-open saddle type heating coil is horizontally connected so as to be connected by a connecting member and face each other. In the heating coil mounting structure that supports and fixes these coil supporting materials to the coil supporting material mounting plate, the labor of manufacturing the coil supporting material mounting plate is reduced, and thus, for example, the cost of the multi-stage high-frequency heating device is reduced. It is an object of the present invention to provide a heating coil mounting structure that can reduce the heat dissipation.

[0012]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the heating coil mounting structure of the present invention comprises 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 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 bolt provided on the coil supporting member so that the bolt is screwed. In the mounting structure of the semi-open saddle type high frequency heating coil having a screw hole, a pair of through holes formed in the coil supporting member mounting plate with steps and a shape corresponding to the shape of these through holes are formed. A pair of bolt plates that are inserted into the through holes and contact the step and are provided in pairs corresponding to the size of the heating coil, and through holes are formed in the bolt plates so as to correspond to the screw holes. With the bolt holes Wherein the bolt, the coil support member screwed into the inserted and the screw hole in the bolt hole is fixed to the coil support member mounting plate.

[0013]

【Example】

 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 explanation of a coil supporting member and a coil supporting member mounting plate. Fig. 4, Fig. 4 is a perspective view of the bolt plate, Fig. 5 is a front view of the coil support material mounting plate with the bolt plate attached to the coil supporting material mounting plate, and Fig. 6 is a front view of the coil supporting material mounting plate. 7 is a sectional view taken along the line AA of FIG. 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 the present embodiment supports the heating coil 100, is connected by a connecting member 205, and is horizontally arranged so as to face each other. The coil supporting frame 200 having a pair of coil supporting members 210 and 220 and the heating coil 100 are connected to each other by a connecting member 205A, and the coil supporting members 210A and 220A are horizontally arranged so as to face each other. The coil support frame 200A having the coil support member mounting plate 300, the coil support members 210, 220, 210A, and the bolts 301 for fixing the 220A to the coil support member mounting plate 300 and the bolts 301 are screwed together. The coil support members 210, 220, 210A, and 220A are provided with four screw holes 230 provided on the mounting end face of the coil support member mounting plate 300. If it is difficult to form the screw holes 230 in the coil support members 210, 220, 210A, 220A, a cylindrical hole is formed, and a screw-shaped metal pipe (for example, Helisert under the trade name) is formed in this hole. May be inserted.

The heating coil mounting structure of the present embodiment also includes a pair of same-shaped elliptical through holes 307 formed in the coil supporting member mounting plate 300 as shown in FIG. 6, and these through holes 307. And a pair of bolt plates 500 (FIG. 4) which are inserted into the heating coil 100 and are provided in pairs 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 the cross-sectional area of the small diameter portion 305. Has been done.

The pair of bolt plates 500 have the same shape and are formed in an elliptical shape corresponding to the shape of the through hole 307, so as to correspond to the screw holes 230 of the coil supporting members 210 and 220, that is, Bolt holes 50 1 are provided so as to correspond to the number, diameter and vertical spacing of the di holes 230.

Note that L (FIG. 6) is the horizontal distance between the pair of through holes 307. The coil support members 210, 220 of the coil support frame 200 and the coil support members 210A, 220A of the coil support frame 200A provided corresponding to the size of the heating coil 100 are the coil support members 210, 220, When 210A and 220A support the heating coil 100, the horizontal distance between the screw holes 230 is L. The coil support material mounting plate 300, like the conventional coil support material mounting plate 900, includes a bolt hole 303 and a notch 310.

Next, assembly of the heating coil mounting structure of the present embodiment will be described. First, the conductors 12 and 18 of the heating coil 100 are previously fixed to the tips of the four bolts 101 fixed to the coil support members 210, 220, 210A, and 220A by brazing or the like. The bolt plate 500 is inserted into the large-diameter portion 306 of the through hole 307 of the coil supporting member mounting plate 300 and brought into contact with the step 30 4. Next, with the end faces of the coil support members 210, 220, 210A, 220A in contact with the small diameter portion 305 side of the through hole 307 of the coil support member mounting plate 300, the bolt 301 is attached to the bolt plate 500. It is inserted into the bolt hole 501 and further screwed into the screw holes 230 of the coil supporting members 210, 220, 210A, 220A to fix the coil supporting members 210, 220 to the coil supporting member mounting plate 300, and the assembly is completed.

Next, in order to attach a heating coil having a size different from that of the above 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 being inserted 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]

[Effect of the device]

 As described above, the heating coil mounting structure of the present invention includes a pair of coil support members horizontally arranged so as to support and face the semi-open saddle type high frequency heating coil, and these coil support members. , A coil supporting material mounting plate, a bolt fixing the coil supporting material to the coil supporting material mounting plate, and a screw hole provided in the coil supporting material so that the bolt is screwed. In a mounting structure for a semi-open saddle type high frequency heating coil having a pair of through holes formed in the coil supporting member mounting plate with steps and a shape corresponding to the shape of these through holes, A pair of bolt plates inserted into the through-holes, abutting against the step difference and provided in pairs corresponding to the size of the heating coil, and penetrating holes respectively corresponding to the screw holes. With a bolt hole, Serial bolt, the bolt is inserted into the hole and screwed into the screw hole the coil support member is secured to the coil support member mounting plate.

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. There is no such thing, simply select a bolt plate corresponding to the size of the heating coil, 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 using various heating coils corresponding to the size of the work, it does not take time and the cost of the high frequency heating device using such heating coils 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 material 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 for 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 materials arranged in a horizontal direction so as to support and face a semi-open saddle type high frequency heating coil, a connecting material connecting these coil supporting materials, and a coil supporting material mounting plate. Mounting a semi-open saddle type high frequency heating coil having a bolt for fixing the coil supporting member to the coil supporting member mounting plate and 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 against the step, and provided in pairs corresponding to the size of the heating coil, and to 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: