JPH0115143Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a double cylinder consisting of an inner cylinder and an outer cylinder, and a bottom provided between the double cylinders.
The case body has a protruding body protruding base with a wedge-shaped engagement recess at a position facing the shaft, and a wedge-shaped engagement base that fits into the double cylinder and faces the outer surface of the body and has a wedge-shaped engagement recess at a position facing the body protruding base. A toroidal coil is housed in the case body of an insulating case made of an electrically insulating material, and a lid plate protruding from a lid protruding base with a mating recess is fitted, and a toroidal coil is fitted to the outer circumference of the insulating case. In a coil wound with winding wire, there is a leg part with a size that fits between the main body protruding base and the lid protruding base, a long leg part that is perpendicular to this and longer than the outer diameter of the coil, and a leg part that is approximately equal to the radius of the coil. It has a U-shaped cross section consisting of short legs, and has wedge-shaped locking parts that fit into the engagement recesses protruding from the long and short legs, and a plurality of leads on the base and long legs. The present invention relates to a toroidal coil that is integrally formed with an electrically insulating material, and has a through hole for passing a wire through, and a groove cut toward the outer edge with a width slightly narrower than the through hole.

Generally, when a toroidal core is covered with an insulating case and a winding is wound over the insulating case and the toroidal coil is attached to a device board, the axis of the core is placed parallel or perpendicular to the board. Conventionally, in any case of mounting, the lead wire of the coil was passed through the mounting hole of the board, held in a tensioned state, and fixed by soldering to a wiring terminal provided on the bottom surface of the board. However, the position of the coil lead wire is not always in the fixed position when the coil is wound, so the work of passing the lead wire through the mounting hole of the board is inefficient.
In particular, when the coil is placed vertically with its axis perpendicular to the substrate, the mounting surface of the coil is small and stable installation is difficult, and it is difficult to apply and apply adhesive, making it difficult to securely fix the coil firmly. Therefore, vibrations, shocks, etc. may cause the coil to fall over or lead wires to be damaged, resulting in a lack of reliability of the device.

The present invention eliminates the drawbacks of the conventional toroidal coil, and is a toroidal coil holder that allows the axis of the coil to be mounted in either parallel or perpendicular directions to the board. This has the effect that the drawing position is uniform and a reliable coil can be obtained.

The embodiment of the present invention has an inner cylinder 11 as shown in FIG.
A double cylinder consisting of an outer cylinder 12 and an outer cylinder 12, and a bottom provided between the two cylinders are placed on the outside of the insulating case main body 1, and on the outside of the cover plate 2 that fits with the double cylinder, at positions symmetrical to the axis. A main body protruding base 14 and a lid protruding base 21 each having a wedge-shaped engaging (concave) portion 15 facing outward are integrally formed of an electrically insulating material to constitute an insulating case. Further, the case body 1 is formed by dividing the inner cylinder 11 equally into two parts parallel to the axial direction, and combining the partition plate 13 protruding a required length from the end face of the inner cylinder 11 with the main body protruding base 14 of the case body. Ru. The engaging recesses 15 provided in the case body 1 and the lid protruding bases 14 and 21 protrude from the case body 1 and the lid plate 2, and the depth thereof increases from the center toward the periphery.

After storing a toroidal core in this case body 1 and covering it with a lid plate 2, an inner cylinder 1 is divided by a partition plate 13.
A winding 4 is wound around each space through the space 1, and a lead wire 5 is drawn out to form a coil.

Furthermore, the holding plate 3 for holding the toroidal coil of the present invention has a U-shaped cross section as shown in FIG. The length L ₁ of the portion 31 is greater than the outer diameter of the coil, and the length Ls of the shorter leg portion 32 is greater than the outer diameter of the coil.
is approximately equal to the radius of the coil, and the long leg 31
The base 3 is orthogonally connected between the short leg 32 and the short leg 32.
The length Lb of 3 is the outer dimension between the main body protruding base 14 and the lid protruding base 21 of the case. Also, both legs 31, 3
The main body protruding base 14 and the lid protruding base 21 are located at the center of the inner surface of 2.
Two locking portions 34 are protruded from the long leg portion 31 and one locking portion 34 is provided from the short leg portion 32, which are fitted into the engaging portion 15 having a recessed portion. Furthermore, a plurality of through holes 35 for passing lead wires are provided in the long leg portion 31 and the base portion 33.
A cut groove 36 is provided with the surface of the hole as the bottom and slightly narrower than the hole diameter and cut toward the edge.

When this holding plate 3 is placed horizontally with the axis of the coil perpendicular to the board as shown in FIG. 2, the lead wire 5 in FIG.
6 and pull it out horizontally from the bottom of the coil. Next, the main body protruding base 14 and the lid protruding base 21 of the insulating case
The engaging part 15 of the long leg part 31 and the locking part 34 of the short leg part 32 are aligned, the holder 3 is fitted into the coil, and the lead wire 5 is pulled out from the long leg part 31 to the bottom surface. The position of the lead wire 5 is determined.

If the coil is placed vertically with its axis horizontally, the coil lead wire 5 should be connected to the base 3 as shown in Figure 3.
3 through the cut groove 36 and pull it out from the through hole 35,
The engaging recesses 15 of the main body protruding base 14 and the lid protruding base 21 of the insulating case and the locking parts 34 of the long legs 31 and short legs 32 may be fitted. Therefore, the position of the coil lead wire 5 is determined by pulling it out from the through hole 35 of the base 33.

The height of the main body protruding base 14 and the lid protruding base 21 is the same as that of the winding 4.
If the thickness is always set larger than the roll thickness of
4. It makes good contact with the lid protruding base 21, and the coil is stably held. In the embodiment, the coil is not wound near the main body protruding base 14 and the lid protruding base 21, and the side surface of the coil is located at the base 33.
Although the case where the winding is in contact with
The locking portion 34 may be provided apart from the base portion 33 in consideration of the winding thickness. In order to securely hold the coil, it is bonded with an adhesive, but since the holding plate 31 is present, bonding is easy.

As described above, the present invention consists of a double bottomed cylinder consisting of an inner cylinder 11 and an outer cylinder 12, and a lid plate 2 that fits into the bottomed cylinder. The toroidal core is housed in the insulating case body 1, which has a partition plate 13 that is divided into two parts, and engagement parts 15 with the toroidal coil holding plate at both ends of the top of the partition plate, and the space in the inner cylinder is divided by the partition plate. The insulating holding plate 3 having an L-shaped cross section is provided with a through hole 35 for inserting the lead wire of the coil and a cut groove 36 leading from the through hole to the periphery of the holding plate. The present invention relates to a toroidal coil in which an engaging portion of the insulating case is fitted and fixed to a locking portion 34 provided at a predetermined position of the holding plate.

As described above, by using the holder 3 of the present invention, the position of the lead wire can be determined regardless of whether the toroidal coil is placed vertically or horizontally, and the coil can be easily and stably attached to the board. The lead wire 5 is not damaged or cut even by vibrations and shocks, and a highly reliable coil can be obtained.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing an embodiment of the holder of the present invention together with a toroidal coil; Fig. 2 is a perspective view showing the relationship between the holder and the coil when the axis of the coil is aligned perpendicular to the substrate; FIG. 3 is a perspective view showing the relationship between the holder and the coil when the axis of the coil is placed parallel to the substrate. The symbols shown in the drawings are: 1: Insulating case body, 2: Lid plate, 3: Holding plate, 4: Winding wire, 5: Lead wire, 11: Inner cylinder, 12: Outer cylinder, 13: Partition plate,
14: Main body protrusion base, 21: Lid protrusion base, 15: Engagement part, 31: Long leg part, 32: Short leg part, 33: Base part, 34: Locking part, 35: Through hole, 36: Cut It is a groove.

Claims (1)

[Scope of utility model registration request] A partition plate 1 consisting of a double bottomed cylinder consisting of an inner cylinder 11 and an outer cylinder 12 and a lid plate 2 that fits into the bottomed cylinder, passes through the axis of the inner cylinder and divides the space into two parts.
3, and engaging parts 1 for fixing the toroidal coil to the insulating holding plate 3 having an L-shaped cross section at both ends of the upper part of the partition plate.
A toroidal core is housed in an insulating case body 1 provided with an insulating case body 1, and a toroidal coil is constructed by winding the inner cylinder space dividedly by the partition plate 13. A through hole 35 and a cut groove 36 leading from the through hole to the periphery of the retaining plate 3 are provided, the toroidal coil is inserted into the retaining plate 3, and the engaging portion 1 of the insulating case 1 is inserted into the retaining plate 3.
5 to the long legs 31 and the short legs 3 of the holding plate 3.
A toroidal coil that is fitted and fixed to a locking part 34 provided in 2.