JPH0355966B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention comprises a core body consisting of an E-type laminated core and an I-type laminated core, in which an annular coil body is fitted through a sheet of insulating paper. This invention relates to an improvement in a method for assembling an electromagnetic coil.

[Conventional technology]

FIGS. 5 and 6 show an example of a conventional electromagnetic coil in which an annular coil body is fitted to a core body consisting of an E-type laminated core and an I-type laminated core through a sheet of insulating paper. FIG. 5 shows the state during assembly, and FIG. 6 shows the state after assembly.

In these figures, reference numeral 51 denotes an E-shaped laminated iron core, of which both legs 52 and 53 are formed to be slightly longer than the central leg 54. Reference numeral 55 denotes an I-shaped laminated core, which forms an iron core body together with the E-shaped laminated core 51 by joining to the tips of both legs 52 and 53 of the E-shaped laminated core 51. 56 is an insulating paper, and 57 is an annular coil body that is fitted to the iron core through the insulating paper 56. As shown in FIG. 5, the insulating paper 56 is
Coil body 5 inserted into the groove of E-type laminated core 51
A pair of U-shaped portions 58 surrounding two opposing sides of 7,
59, a connecting portion 60 that connects the inner edges of both U-shaped portions 58, 59, and both U-shaped portions 58, 5.
A presser part 61 is bendably provided on the outer edge of 9.
62.

When assembling such an electromagnetic coil, please refer to Figure 7a.
As shown in FIG. 3, first, both U-shaped portions 58 and 59 of the insulating paper 56 are inserted into the groove of the E-shaped laminated core 51, and the insulating paper 56 is attached to the E-shaped laminated core 51. Next, as shown in FIG. 7b, the holding part 61 of the insulating paper 56,
62 is pushed outward. Then, as shown in FIG. 7c, the two opposite sides of the coil body 57 are inserted into both U-shaped portions 58 and 59 of the insulating paper 56. Then,
As shown in FIG. 7d, the holding parts 61 and 6 of the insulating paper 56
2 is bent inward to cover the coil body 57 and overlapped with the connecting part 60, and then the I-type laminated core 55 is joined to the tips of both legs of the E-type laminated core 51 as shown in FIG. 7e. to complete the assembly of the electromagnetic coil.

[Problem to be solved by the invention]

However, the conventional assembly method described above has the following problems.

That is, the insulating paper 56 used in the above assembly method
The holding parts 61 and 62 are bent inward in advance in order to be bent inward later, and are pushed outward before inserting the coil body as shown in Fig. 7b. If it is not spread out sufficiently, the presser part 62 may become in the state shown by the dotted line in FIG. 7c.
It becomes difficult to insert the coil body. In particular, when assembling the electromagnetic coil automatically by a machine, the insulating paper 5 of the coil body 57 may
It becomes impossible to insert it into both U-shaped portions 58 and 59 of No. 6. Furthermore, in this assembly method, after inserting the coil body 57 into both the U-shaped parts 58 and 59 of the insulating paper 56, as shown in FIG. Bend it inward so as to cover it and overlap it with the connecting part 60. Next, press it with adhesive tape or the like so that the holding parts 61 and 62 do not open outward as shown by the dotted line in FIG. 7d. If this is not done, the holding portion will be pinched between the side legs of the E-type laminated core 51 and the I-type laminated core 55,
There was a problem that it became impossible to join both iron cores. Because of these problems, this method is extremely unsuitable for mechanizing and automating the assembly of electromagnetic coils.

The present invention has been made in view of the above points, and an object of the present invention is to provide a method for assembling an electromagnetic coil that does not require adhesive tape or the like to press down a part of the insulating paper during assembly and is suitable for mechanization and automation of assembly. With the goal.

[Means to solve the problem]

The present invention provides a method for assembling an electromagnetic coil that meets the above-mentioned objective by adding innovation to the structure of the insulating paper, the way the coil body is wrapped with the insulating paper, and the way it is fitted into the core body. .

That is, a pair of U-shaped parts that wrap around two opposing sides of a coil body inserted into the groove of the E-shaped laminated core are used as insulating paper, a connecting part that connects the outer edges of the two U-shaped parts, and the above-mentioned An insulating paper consisting of both U-shaped parts and bent parts formed on the inner edges is prepared. Then, this is applied to the annular coil body, and the inner edges of both the U-shaped portions are inserted into the hollow portion of the coil body, so that the two opposing sides of the coil body are wrapped in the U-shaped portions. Thereafter, the U-shaped part of the insulating paper wrapped around the coil body is inserted into the groove formed between the central leg of the E-shaped laminated core and the slightly longer side legs. Finally, the I-shaped laminated core is combined and joined to the tips of both legs of the E-shaped laminated core.

[Effect]

According to this method, the outer edges of a pair of U-shaped portions of insulating paper that wrap around two opposing sides of the coil body are connected to each other by a connecting portion, and the U-shaped portions of the insulating paper that are inserted into the hollow portion of the coil body are The bent portion on the inner edge of the U-shaped portion is formed when the U-shaped portion is inserted into the groove of the E-shaped laminated core.
Since the tip of the central leg of the laminated core is automatically overlapped with the connecting portion, no adhesive tape or the like is required.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4. An electromagnetic coil using the assembly method according to the present invention is shown in FIGS. 1 and 2. FIG. 1 shows the state during assembly, and FIG. 2 shows the state after assembly. In these figures, reference numeral 1 denotes an E-shaped laminated iron core, the legs 2 and 3 on both sides of which are formed to be slightly longer than the center leg 4. Reference numeral 5 denotes an I-type laminated core, which is joined to the tips of both legs 2 and 3 of the E-type laminated core 1 to form a core body together with the E-type laminated core 1. 6
7 is an insulating paper, and 7 is an annular coil body that is fitted onto the iron core through the insulating paper 6. As shown in FIG. 3, the insulating paper 6 has a pair of U-shaped portions 8 and 9 that wrap around two opposite sides of the coil body inserted into the groove of the E-shaped laminated core; 9, and bent portions 11 and 12 which are bendably provided on the inner edges of both U-shaped portions.

When assembling an electromagnetic coil using such insulating paper, first, as shown in FIG. Apply the connecting part 10 of the paper 6. Next, as shown in Figure 4b or Figure 4b',
The inner edge of the U-shaped portion of the insulating paper 6 is inserted into the hollow portion of the coil body 7, and the two opposing sides of the coil body 7 are wrapped in the U-shaped portions 8 and 9. Note that FIGS. 4a and 4b show the case where the insulating paper 6 is applied to the upper side of the coil body 7, and FIGS. 4a' and 4b' show the case where the coil body 7 is assembled.
When assembling with insulating paper applied to the lower side, in the case of Fig. 4 a' and Fig. 4 b', after inserting the inner edge of the U-shaped part into the hollow part of the coil body 7, It is necessary to repeat it once.

Next, as shown in FIG. 4c, the U-shaped parts 8 and 9 of the insulating paper 6 that wrapped the coil body 7 are attached to the central leg 4 of the E-shaped laminated core 1 and the slightly longer side legs 2,
Insert it into the groove formed between 3. Finally, as shown in FIG. 4d, the I-type laminated core 5 is combined and joined to the tips of the legs 2 and 3 on both sides of the E-type laminated core 1.

[Effects of the Invention] As is clear from the above description, in the present invention, the bent part (pressing part) formed on the outer edge of the U-shaped part of the insulating paper is assembled into an I-shaped laminated core. Instead of wrapping the coil body by folding it inward from the mating direction, we inserted the bent part formed on the inner edge of the U-shaped part of the insulating paper into the hollow part of the coil body, and then wrapped it into an E-shaped laminated core. Since the tip of the central leg of the center leg overlaps the connecting part of the insulating paper, there is no need to temporarily secure the bent part with adhesive tape, etc. during assembly, and the number of steps is small, making it easy to mechanize and automate assembly. extremely suitable.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an electromagnetic coil assembled according to the present invention during assembly, FIG. 2 is a perspective view of the electromagnetic coil after assembly, FIG. 3 is a cross-sectional view of the insulating paper used in the present invention, and FIG. 4 is a perspective view of the electromagnetic coil according to the present invention. A process diagram of the assembly method related to
Fig. 5 is a perspective view of an electromagnetic coil being assembled using the conventional method, and Fig. 6 is a perspective view of the electromagnetic coil after assembly.
FIG. 7 is a process diagram of a conventional assembly method. 1st
In FIGS. 1 to 4, 1...E-type laminated core, 2, 3...Both legs, 4...
...Central leg, 5...I-shaped laminated core, 6...Insulating paper,
7... Coil body, 8, 9... U-shaped portion, 10...
Connecting part, 11, 12...Bending part, 13, 14...
Groove.

Claims (1)

[Claims] 1. A method for assembling an electromagnetic coil in which an annular coil body 7 is fitted onto a core body consisting of an E-type laminated core 1 and an I-type laminated core 5 with a sheet of insulating paper 6 interposed therebetween. As the insulating paper 6, a pair of U-shaped portions 8 and 9 surrounding two opposing sides of the coil body 7 inserted into the groove of the E-shaped laminated core 1 and the outer edges of both U-shaped portions 8 and 9 are used as the insulating paper 6. An insulating paper 6 consisting of a connecting part 10 that connects each other and bent parts 11 and 12 formed on the inner edges of both U-shaped parts 8 and 9 is prepared, and this is applied to the annular coil body 7. Well, both U-shaped parts 8 and 9 of the insulating paper 6
The process of inserting the inner edge of the coil body 7 into the hollow part of the coil body 7 and wrapping the opposite two sides of the coil body 7 with the U-shaped parts 8 and 9, and the process of inserting the inner edge of the coil body 7 into the hollow part of the insulating paper 6 that wraps the coil body 7. 8 and 9 into the grooves 13 and 14 formed between the central leg 4 of the E-type laminated core 1 and the slightly longer side legs 2 and 3; A method for assembling an electromagnetic coil comprising the step of joining an I-shaped laminated core 5 to the tip of the coil.