JPS61187212A - Coil prescribed for high voltage winding - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a coil body defined for high-voltage windings, such as the secondary winding of an automobile primary ignition coil, which is made of an insulating material. , and in the disassembled state, it is a hollow body with two open end faces, and further has a winding chamber extending in a groove shape in the circumferential direction, and the sides of the winding chamber are restricted by a partition wall, In addition, the winding chambers receive each one of a plurality of winding groups, and the winding groups are electrically connected in series such that one winding chamber receives one winding group from the other. A recess is formed in the partition wall located between both winding chambers in order to pass through to the wire room, and the depth of this recess is smaller than the height of the partition wall. The wire is guided through the cutout substantially in the winding direction from the region of the upper edge of the partition wall to the bottom region of the partition wall, and the winding wire is supported by a running surface, which is gradually reduced in height, and finally this run-up surface is reduced in the bottom region of the partition wall, the wall thickness of the partition wall being reduced towards the said notch, and this reduction is caused by the winding passing through it. It relates to a type of wire that is formed by coming from the side facing the wire.

BACKGROUND OF THE INVENTION A coil body of the above-mentioned type, known from German Utility Model Registration No. 8317447.8, is known in which the winding groups are brought into contact by passing through the cut HB-4 or are closely connected to each other. At close intervals,
This makes it impossible to prevent electrical flange-over. Furthermore, the winding wire may be bent when passing through the notch. Furthermore, the known coil bodies are not sufficient to completely prevent twisting of the winding wire when passing through the cut.

OBJECT OF THE INVENTION The object of the invention is to reliably eliminate the known drawbacks mentioned above.

Means for Solving the Problems The measures taken to solve the above-mentioned problems are such that even in the range where the run-up surface is at the upper edge of the partition wall, the wall thickness of the partition wall is reduced toward the notch, and this reduced portion The reason is that the winding wire is formed from the side facing the winding wire through which it passes.

Effects of the Invention The advantage obtained by the present invention is that the winding wire material is not bent or twisted when passing from one wire ring to the next wire wire, and passes through the cut portion. The main advantage is that the winding groups do not come into contact with each other, so that electrical 7 ratios are prevented.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated coil body is designed to receive a high-voltage winding 1, in particular a secondary winding of an ignition coil belonging to a motor vehicle. The coil body is made of an insulating material, preferably polycarbonate with 20% by weight of glass fibers as filler. The coil body has two open end faces of 2.3 tW in the disassembled state, and has a hollow body shape ff:
i am doing A winding chamber 4 extending in the shape of a groove in the circumferential direction is provided on the outer periphery, and the sides of the winding chamber are limited by partition walls 5 . The winding 1 is divided into winding groups 6 which are electrically connected in series and each housed in one of the winding chambers 4 . In order to pass the winding wire material 7 from one winding amount 4 to the other winding chamber 4, a notch 8 is provided in the partition wall 5 located between both winding chambers, and the depth of this notch is t is smaller than the height h of the partition wall. For reasons of stability, the two notches 8 of two adjacent partition walls 5 are offset from each other by 180 degrees in the circumferential direction of the coil body. The winding 7 in the cutout 8 starts in the region of the upper edge 9 of the partition wall and extends to reach the bottom region 10 of the partition wall. In this case, the winding wire material 7 runs on the surface 11
This landing surface is supported by, at a height a,
Between the upper edge 9 of the partition wall and the bottom region 10 it tapers off so that an inclined surface is formed. Bottom area 10 of partition wall 5
The run-up surface 11 in the partition wall 5 is such that the wall thickness of the partition wall 5, which is slightly tapered upwards, is reduced towards the notch 8, and that this reduction 12 occurs from the side facing the passing winding 7. formed by Similarly, in the area of the upper edge 9 of the partition wall, the rising surface 11 is such that the wall thickness of the partition wall 5 is reduced toward the notch 8, and this reduced portion 13 is on the side facing the winding wire 7π passing through. formed by arising from.

By using a coil body with such a configuration, the winding wire material 7 can have sufficient elongation within the range of the notch 8, and furthermore, adjacent winding groups 6 may come into contact with each other or the notch 8 contact with the winding wire 7 passing through, and electrical Franzoopers caused in connection with this contact are reliably avoided.

[Brief explanation of the drawing]

FIG. 1 is a side view of the coil body according to the present invention, FIG. 2 is an enlarged perspective view of the notch through which the winding wire passes, and FIG.
FIG. 3 is an enlarged view of the notch according to the figure. 1... Winding wire, 2, 3... End face, 4... Winding chamber, 5
... Partition wall, 6 ... Winding group, 7 ... Winding wire material, 8 ... Notch, 9 ... Upper edge of partition wall, 10.
...Bottom range, 11...Rounding surface, 12.13...
・Decrease part.

Claims (1)

[Claims] A coil body defined for high-voltage windings, which is made of an insulating material and is a hollow body with two open end faces in the disassembled state, and further includes a winding chamber extending in the form of a groove in the circumferential direction. the winding chamber is laterally limited by a partition wall, and the winding chamber receives each one of the plurality of winding groups, and the winding groups are electrically connected. A notch is formed in the partition wall located between the two winding chambers in order to pass from one winding chamber to the other, and the depth of this notch is the height of the winding wire is smaller than the height of the partition wall, and the winding wire is guided through the cutout substantially in the winding direction from the area of the upper edge of the partition wall to the bottom area of the partition wall,
Moreover, the winding wire material is supported by the riding surface,
This landing surface is gradually reduced in height,
And finally, this run-up surface is formed in the bottom region of the partition wall by the fact that the wall thickness of the partition wall is reduced in the direction of the notch, and this reduction occurs from the side facing the passing winding wire. In the format that is
Even in the range where the riding surface (11) is within the upper edge (9) of the partition wall, the wall thickness (b) of the partition wall (5) is at the notch (8).
specified for a high-voltage winding characterized in that it is reduced towards the passing winding wire (7), and that this reduction (13) is formed by arising from the side facing the passing winding wire (7). coil body.