JPS6022594Y2 - Multi-winding frame for electromagnetic coils - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a winding frame structure for manufacturing an electromagnetic coil having a structure in which multi-divided elementary coil groups are stacked in multiple stages.

In general, in the case of high-voltage electromagnetic coils, dividing the coils and stacking them in multiple stages for insulation between coil layers has the effect of lowering the layer voltage and simplifying the insulation design, and is more commonly used than in the past.

Figure 1 shows a resin molded coil as an example of an electromagnetic coil in which a group of multi-divided elemental coils is stacked in multiple stages.
Groups of bare coils 2, 2', 2'', each having an electric wire 1 wound thereon, are stacked in multiple stages (divided into three in the drawing) and embedded in a casting resin 3.

Conventionally, in order to manufacture this type of electromagnetic coil, as shown in Fig. 2, elemental coil groups 2.2', 2' are manufactured individually using winding cores, and then elemental coil groups 2.2', 2', Using a special jig and tool to concentrically position the coils 2.2' and 2.
are stacked in multiple stages with insulating spacers 4 interposed between them.

At this time, an adhesive is applied to the insulating spacer 4 and the insulating spacer 4 is adhesively fixed.

Then, the lead wires of the elementary coil groups 2.2' and 2'' are electrically connected.

However, with this method, winding man-hours are required for each elemental coil, and more work is required than the winding work itself, as well as the preparation work for assembling and disassembling the winding frame because the winding core is split. For electrical connection, removal of the wire film and soldering work are required, which has the disadvantage that it requires a large number of man-hours and tends to be complicated.

In addition, in order to stack bare coils in multiple stages and completely fix them, it is necessary to select an adhesive and use special jigs and tools, which increases the process of moving the bare coils, which can damage the wires of the bare coils and cause insulation defects. There were disadvantages such as the possibility of

The present invention eliminates the above-mentioned conventional drawbacks and provides a winding frame that facilitates the manufacture of multi-layered electromagnetic coils.An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. .

In FIG. 3, reference numeral 11 is a winding shaft having chucks 12 at both ends for attachment to a winding machine, and a side plate 13 is integrally fixed to one end.

Reference numeral 14 denotes a winding core formed by combining two half-split cylindrical members, and one end of which is attached to the side plate 13 via a hinge 15.

16 is an annular side plate fitted to the outer periphery of the winding core 14;
3 is integrally attached with bolts etc.

Reference numeral 17 denotes an intermediate partition plate which is removably fitted to the outer periphery of the winding core 14, and is composed of at least two members disposed facing each other.

Reference numeral 18 denotes an end side plate that is detachably attached to the winding shaft 11 with a nut 19, and a winding storage space 20.20 that is divided into three by the annular side plate 16 and the intermediate partition plate 17 in the winding core 14.
'.

20'.

FIG. 4 shows the structure of the main components in the winding frame structure, in which the winding core 14 is provided with a plurality of engagement holes 21 for removably fitting the intermediate partition plate 17, and both ends The cut surface 22 is inclined so that the space 23 in the opposing portion of the two half-cylindrical members increases from the position of the side plate 13 toward the end side plate 18, as shown in FIG. It is composed of

Further, the intermediate partition plate 17 has a step-like notch 24 formed therein as shown in the figure, so that the hatched portion is fitted into the engagement hole 21 of the winding core 14.

Further, the end side plate 18 is provided with a hole 25 through which the winding shaft 11 passes.

Next, to explain the winding process using the winding frame, the winding shaft 11,
The annular side plate 16 and the side plate 13 are fixed together, and the winding core 1
4 is fixed to the winding shaft 11 via a hinge 15. To assemble the winding frame during winding, insert the end side plate 18 into the winding shaft 11, set the winding core 14 to a predetermined size, and tighten the nut 19. Fix it with.

Then, the intermediate partition plate 17 of the engagement hole 21 of the winding core 14 is inserted.

In this way, the winding frame is assembled. Attach this to a winding machine and wind the wire.

The electric wire is a self-bonding wire that has an insulating layer that is self-heated and fused on a covering insulated with enamel or an insulating sheet, and is wound a predetermined number of times in the winding storage space 20 without layer paper, and the winding is stored in sequence. The spaces 20', 20'' are wound a predetermined number of times.

After winding a predetermined number of times in this manner, an insulating spacer made of an insulating material is press-fitted into the space 26 and notch 24 provided in the intermediate partition plate 17.

After winding is completed as described above, the wire is heated appropriately using a dryer or the like.

By this heating, the self-adhesive layer of the electric wire is fused and hardened, and the turns and layers of the winding are fixed together, and the insulating spacer is adhesively fixed between the bare coils.

After that, after cooling, the intermediate partition plate 17 is first removed from the winding shaft 11.
Remove the nut 19 and remove the end side plate 18.

When the winding core 14 moves the half-split cylindrical member in the direction of the winding shaft 11 (as shown in FIG. (When moving the half-tube shape) The winding core size can be made smaller than the inner size of the bare coil.

Then, when the elementary coil group is removed in the direction of the winding shaft 11, a multi-layer stacked electromagnetic coil including the elementary coil group is obtained.

As mentioned above, the present invention can easily create multi-divided coil groups and multi-stage stacked coils, and the winding core, winding shaft, and one end side plate are integrated, making it easy to assemble and disassemble the winding frame. There is no need to disassemble the core when removing it from the coil.

Furthermore, an insulating spacer can be inserted through the space and notch of the intermediate partition plate, and a multi-layered electromagnetic coil in which a group of elementary coils are integrated can be easily obtained via this spacer.

In this way, the number of work steps can be significantly reduced.

Furthermore, since the elemental coil group can be formed using one continuous electric wire, the work of connecting electric wires between the elemental coils becomes unnecessary, and the occurrence of connection failures at the connecting portions can be reduced.

Multi-stacked coils can be created by winding with Maya self-fusing wire and heat curing, so there is no need for special tools for multi-stacking, there are fewer steps to move the bare coils, and it is easier to move the wire during the process. This also reduces the occurrence of insulation defects due to scratches, etc.

In addition, since the electromagnetic coil can be formed as a group of bare coils without layered paper winding, there are no sharp edges of the layered paper that is molded into the resin, making it highly reliable and free from cracks in the molded resin layer due to heat shock, etc. You can also get molded coils.

Although the description has been made regarding a rectangular coil, it goes without saying that the same method can be applied to a circular coil.

As described above, the winding frame of the present invention not only simplifies the winding work, but also
A highly reliable electromagnetic coil can be manufactured.

[Brief explanation of drawings]

Fig. 1 is a cutaway perspective view showing an example of an electromagnetic coil in which multi-divided elemental coil groups are stacked in multiple stages, Fig. 2 is a cross-sectional view showing a state in which the elemental coils according to the conventional example are stacked in multiple stages, and Fig. 3a,
b is a plan view and a front view of a winding frame according to an embodiment of the present invention; FIG. 4 is an exploded perspective view of the main components of the winding frame;
The figure is an explanatory diagram showing the operation of the winding frame in the winding process. 11... Winding shaft, 13... Side plate, 15...
... Hinge, 16 ... Annular side plate, 17.
...Middle partition plate, 18...End side plate, 20°20'. 20″... Winding storage space, 21... Engagement hole.

Claims (1)

[Scope of utility model registration request] A side plate fixed to one end of the winding shaft, and two half-split cylindrical winding cores with one end rotatably attached to the side plate, with multiple engagement holes in the side wall, and with inclined cut surfaces at both ends. and an annular side plate attached to the side plate that is fitted to the outer periphery of the winding core, and at least two members that are detachably fitted into the engagement hole of the winding core and are arranged opposite to each other. A multi-layer electromagnetic coil comprising: an intermediate partition plate which is detachably attached to the other end of the winding shaft, and a plurality of winding storage spaces formed in the winding core by the intermediate partition plate and the annular side plate; Continuous frame.