JP2562277Y2 - Mounting bracket for induction magnet - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bracket for mounting an induction magnet such as a transformer or a choke on a base.

[0002]

2. Description of the Related Art There is a conventional induction magnet, for example, a transformer, in which a magnetic path of a core constituting a closed magnetic path is set substantially parallel to a mounting surface of a base. The magnetic path can be made more compact in the height direction than a vertical type whose magnetic path is set along the vertical plane. In this type of transformer, the workability of assembly is improved,
Further, in order to reduce the cost, there is known a method in which the mounting bracket is welded to the side surface of the core at one point instead of caulking and fixing the mounting bracket (for example, Japanese Utility Model Publication No. 2-27).
No. 545).

[0003] The above-mentioned transformer of the down type is
As shown in FIG. 5, the core 1 includes an E-shaped core split body 1a and an I-shaped core split body 1b which are supported in parallel with the base 4, and the E-shaped core split body 1a includes: With the bobbin 2 inserted into a leg (not shown),
The parts a and 1b are butted on the division line 1c, and are integrated by welding along the butting surface of the division line 1c. Further, a pair of left and right L-shaped mounting brackets 3 and 3 are welded to both sides 1d of the core 1 at one point in welding holes 3a, and the core 1 is connected to the wiring board 3 through these mounting brackets 3 like a wiring board. It is fixed to the base 4. In addition, each of the mounting brackets 3 is provided with a cut-and-raised piece 3b, and the core 1 is cut and raised and placed on the piece 3b to be positioned in the vertical direction.

[0004]

However, in the above configuration, the mounting brackets 3 for the core 1 are required in a pair of right and left.
It is difficult to position these two mounting brackets 3 and 3 with each other. If the mounting brackets 3 are misaligned, not only can the mounting brackets 3 not be accurately mounted on the base 4 but also the bobbin It is also difficult to connect a terminal (not shown) provided on the wiring board 2 to the wiring board.

Moreover, as described above, the two mounting brackets 3
When welding is used, it is necessary to perform two welding operations in order to weld these mounting brackets 3 to the core 1. Also, each of the divided bodies 1 a and 1 b has a right and left one on a dividing line 1 c.
A total of four welding operations are required together with one welding operation, and there is a problem that the assembling workability is inferior.

The present invention has been made in view of the above-mentioned problems, and a core can be accurately mounted on a base using a single mounting bracket in a flat induction magnet having a reduced height. In addition, it is possible to provide a mounting bracket for an induction electromagnetic device that can simultaneously join the divided bodies of the core and the core and the mounting bracket by one welding operation on each of the right and left sides, thereby significantly improving the assembling workability. The purpose is to:

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a mounting bracket for mounting an induction magnet provided with a split type core on a base to a base, comprising a pair of right and left mounting legs mounted on the base. , Connecting between each mounting leg,
In addition, a part of the left and right side surfaces of the core and a supporting piece that abuts on the back surface are integrally formed with a sheet metal, and a front end of the supporting piece is matched with a dividing line on both sides of the core, and is formed on the dividing line. Along the welding, the divided cores constituting the divided core are joined to each other and between the front end of the support piece and the core.

[0008]

According to the above construction, the mounting bracket is formed by the pair of mounting legs mounted on the base and the support piece for connecting the mounting legs, that is, the mounting bracket is divided. Since it is not an integral type, the mounting brackets can be accurately mounted on the base without causing displacement of the two mounting brackets as in the related art.

Further, at the time of assembling the core, the front end of the support piece of the mounting bracket is matched with the division line of each core division body,
By welding along the above-mentioned division line, each of the divided bodies of the above-mentioned core, and between the core and the mounting bracket can be simultaneously joined by one welding operation on each of the right and left sides, thereby significantly improving the assembling workability. Can be done.

In addition, at the time of assembling as described above, the core is partially supported on the left and right side surfaces and the rear surface by abutting against the supporting piece of the mounting bracket. And it can be stably supported in the front-back direction.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mounting bracket for an induction magnet according to the present invention will be described below with reference to the embodiments shown in FIGS. In the figures shown in the drawings, the same and corresponding parts as those in the conventional apparatus shown in FIG. 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIGS. 1 and 2 show an inverting transformer as an example of an induction magnet. The transformer is a core 1 composed of an E-shaped core split body 1a and an I-shaped core split body 1b.
And a coil bobbin 2 inserted into the middle leg 11 of the E-shaped split body 1a, and a mounting bracket 3. The core 1 forms a magnetic path substantially parallel to the mounting surface 4a of the base 4.

The mounting bracket 3 is connected to a pair of left and right mounting legs 30, 30 mounted on a base 4 such as a wiring board, and connects the mounting legs 30 to each other. Supporting piece 3 abutting on part and back surface 1e
The mounting legs 30 and the support pieces 31 are integrally formed of sheet metal. Each of the mounting legs 30 is provided with a fixing piece 30a extending horizontally from the lower end thereof to the outside, and a screw hole 30 formed in the fixing piece 30a is provided.
b, a fixing screw (not shown) is inserted through the base 4 so that the mounting bracket 3 is attached to the mounting surface 4a of the base 4.
To fix it.

The support piece 31 has a first contact portion 31a which is in contact with the back surface 1e of the E-shaped split body 1a of the core 1, and is bent from both ends in the longitudinal direction of the first contact portion 31a. And extends to the front side (right side in the figure), and
a pair of left and right second abutting portions of the left and right sides 1d
The contact portions 31b, 31b are formed in a U-shape in plan view,
At the front end side of the second abutting portion 31b, a fixing projection 31c whose front end coincides with the dividing line 1c of each of the divided bodies 1a and 1b in the core 1 is integrally provided at an intermediate position in the vertical direction.

Further, at the lower end side of each of the second contact portions 31b of the support piece 31, core receiving pieces 32, 32 projecting inward are provided symmetrically. The core 1 can be placed and positioned.

The receiving piece 32 is provided with the fixing projection 31c.
It is preferable that the distance L from each of the receiving pieces 32 to the tip of the projection 31c be as large as possible, as shown in FIG. By doing so, when the core 1 and the mounting bracket 3 are welded, the core 1 is supported by the distal end of the fixing projection 31c and the receiving piece 32 which are largely separated from each other. The mounting bracket 3 can be stably and firmly supported.

In FIG. 1, reference numerals 5 and 6 denote primary and secondary terminals provided below the coil bobbin 2. These terminals 5 and 6 are inserted into terminal holes (not shown) of the base 4. Soldered.

Next, a method of assembling the transformer having the above configuration will be described. First, the coil bobbin 2 is inserted into the middle leg 11 of the E-shaped split body 1a constituting the core 1. Thereafter, the E-shaped split body 1a and the I-shaped split body 1b are
c, and the supporting piece 31 of the mounting bracket 3 is fitted around the outer periphery of the E-shaped split body 1a, and the tip of each projection 31c provided on the second contact portion 31b of the supporting piece 31 is attached. , On the left and right division lines 1c.

The divided bodies 1a, 1b and the projections 31c are welded along the longitudinal direction of the left and right division lines 1c, respectively, so that the divided bodies 1a, 1b are attached to the respective divided bodies 1a, 1b through the welded portions 7. The metal fittings 3 are simultaneously joined, the divided bodies 1a and 1b are integrated with each other, and the mounting bracket 3 is integrated with each of the divided bodies 1a and 1b. As described above, in the core 1 in which the mounting hardware 3 is integrated, the mounting legs 30 of the mounting hardware 3 are fixed to the base 4, and the terminals 5 and 6 are inserted into the terminal holes of the base 4.

In the above transformer, the mounting bracket 3 is
A pair of left and right mounting legs 30 mounted on the base 4,
The mounting brackets 3 are formed by the support pieces 31 which connect the mounting legs 30 to each other, and the mounting bracket 3 is an undivided and integral type, so that the two mounting brackets are displaced as in the related art. Therefore, the mounting bracket 3 can be accurately mounted on the base 4, so that the terminals 5 and 6 provided on the coil bobbin 2 can be reliably and accurately connected to the base 4.

Further, since each of the divided bodies 1a and 1b of the core 1 and the core 1 and the mounting bracket 3 can be simultaneously joined by one welding operation, the assembling workability can be remarkably improved. . Moreover, at the time of the assembling, the E-shaped split body 1a of the core 1 has a part of the left and right side surfaces 1d and a back surface 1e abutting on the first and second abutting portions 31a and 31b of the support piece 31. Being supported, the mounting bracket 3
The core 1 can be stably supported in the left-right direction 40 and the front-rear direction 41 via.

Further, the second contact portion 31 of the support piece 31
By providing the receiving pieces 32 symmetrically in b, the positioning of the core 1 in the vertical direction 42 can be performed via the receiving pieces 32. When the core 1 and the mounting bracket 3 are integrated, the core 1 can be stably and firmly supported on the mounting bracket 3 by the receiving piece 32 and the fixing projection 31.

As shown in the second embodiment of FIG. 3, the mounting member 3 has a first contact portion 31a of a support piece 31 and a second contact portion 31a.
Three flanges 31d may be integrally formed on the upper edge of the contact portion 31b so as to face the receiving piece 32 inward.

According to the above structure, the positioning of the core 1 in the vertical direction 42 can be accurately performed by the flange 31d and each of the receiving pieces 32, and the core 1 can be more stably and firmly attached to the mounting bracket 3. Can be supported.

Further, the above-mentioned mounting bracket 3 does not have the above-described receiving pieces 32 and flanges 31 d,
As shown in the embodiment, a pair of left and right mounting legs 30 and a support piece 31 that connects the mounting legs 30 and abuts a part of the left and right side surfaces and the back surface of the core 1 are provided. It is also possible. In this case, positioning of the mounting bracket 3 and the core 1 in FIG. 1 in the vertical direction 42 is performed using a separate jig.

In each of the above embodiments, the fixing projection 31c may not be provided. This invention can also be applied to a chalk mounting bracket.

[0027]

As described above, according to the present invention, a pair of right and left mounting legs 30 mounted on the base 4 in the mounting bracket 3 for mounting the induction electromagnetic device having the split-type core 1 on the base 4 to the base 4. And the supporting pieces 31 that connect the mounting legs 30 and 30 and abut on the left and right side surfaces 1d and the back surface 1e of the core 1 are integrally formed by sheet metal. The mounting bracket 3 can be accurately mounted on the base 4 without causing the mounting bracket to be displaced, so that the terminal of the induction electromagnetic device can be reliably and accurately connected to the base 4 side.

At the time of assembling the core 1, the front end 31 c of the support piece 31 provided on the mounting bracket 3 is attached to both sides 1 d of the core 1.
And by welding along the dividing line 1c, the divided bodies 1a and 1b constituting the core 1 and between the front end 31c of the support piece 31 and the core 1 are welded along the dividing line 1c. Since each of the divided bodies 1a and 1b and the mounting bracket 3 are connected to each other by one side,
The joining can be performed at the same time by a single welding operation, so that the assembling workability can be significantly improved.

Further, at the time of assembling as described above, the core 1 is supported by a part of the left and right side surfaces 1d and the back surface 1e of the core 1 in contact with the support pieces 31 of the mounting bracket 3. The core 1 can be stably supported in the left-right direction 40 and the front-rear direction 41 via the base 3.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembled state of an induction magnet provided with a fitting according to a first embodiment of the present invention;

FIG. 2 is an exploded perspective view of the induction electromagnetic device with a bobbin omitted.

FIG. 3 is a perspective view showing a mounting bracket according to a second embodiment.

FIG. 4 is a perspective view showing a mounting bracket according to a third embodiment.

FIG. 5 is an exploded perspective view showing a mounting bracket for a conventional induction electromagnetic device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Core, 1a, 1b ... Divided body, 1c ... Dividing line, 3 ... Mounting bracket, 30 ... Mounting leg, 31 ... Supporting piece, 4 ... Base, 4a ... Mounting surface.

Claims (1)

(57) [Scope of request for utility model registration] 1. A mounting bracket for mounting, on a base, an induction magnet provided with a split core forming a magnetic path substantially parallel to a mounting surface of the base, the mounting bracket including a pair of left and right mounting legs mounted on the base. Along with connecting the mounting legs, a part of the left and right side surfaces of the core and a supporting piece that abuts on the back surface are integrally formed by sheet metal, and the front end of the supporting piece matches the dividing line on both side surfaces of the core. A mounting bracket for an induction electromagnetic device in which the divided cores constituting the divided core and the front end of the support piece and the core are joined by welding along the dividing line.