JPH0244506Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a core insulating case that insulates a cylindrical core and a winding and is suitable for mounting on a circuit board.

[Conventional technology]

Conventional cylindrical coils for mounting on circuit boards are made by winding wires around a cylindrical core that has been insulated by wrapping insulating tape or covering with a double cylindrical insulating case. The structure was such that the lead wire of the winding was passed through the insertion hole and its end was connected to the conductor of the circuit board.

[Problem that the invention attempts to solve]

In the structure using the above-mentioned support stand, there is a problem that the coil and the support stand must be bonded with adhesive, which requires a lot of man-hours, and when the winding wire is a thin wire, the end passed through the insertion hole is easily bent, which may cause damage to the circuit. There was a problem in that it was difficult to insert it into the hole in the terminal part of the board, so it was difficult to attach it to the circuit board.

[Means for solving problems]

This invention is characterized in that a support terminal block is integrally provided on the outer surface of the outer cylinder of the insulating case that covers the surface of the cylindrical core.

〔Example〕

Embodiments of the core insulating case according to this invention will be described below with reference to the drawings.

The first embodiment, as shown in an exploded perspective view in FIG. 1, is a horizontal core insulating case for a common yoke coil (the axial direction of the cylindrical core is perpendicular to the circuit board).

In the figure, an insulating case main body 1 includes an outer cylinder 2, an inner cylinder 3, a bottom 4 between the two cylinders, a partition part 5, and a support terminal block 6 that are integrally formed of an insulating resin material. The partition part 5 equally divides the internal space of the inner cylinder 3 into spaces parallel to the axial direction, protrudes from the end face and bottom 4 of the inner cylinder 3 by a required length, and extends to the outer circumference of the outer cylinder 2 at the bottom. .
The support terminal block 6 is provided at a position opposite to the lower part of the outer surface of the outer cylinder 2, and has a height dimension sufficient to support the entire coil while allowing the pin terminal 8 to be implanted therein.
A vertical groove 7 is formed in the center of the outer surface, and pin terminals 8 are implanted in both sides of the vertical groove 7 so as to protrude both upward and downward. As shown in the front view of FIG. 2, the pin terminal 8 protrudes downward for a sufficiently longer length than the lower protrusion height of the partition portion 5.

The lid body 9 includes an annular plate portion 10 that closes the outer cylinder 2 and the inner cylinder 3.
A pair of protrusions 11 having fitting grooves with the side edges of the upper protrusion of the partition part 5 are integrally formed of an insulating resin material.

A cylindrical core (not shown) is stored in the core storage space formed by the outer cylinder 2, the inner cylinder 3, and the bottom 4, and is wound through the inner cylinder space divided by the partition part 5 after being closed with the lid 9. By applying a wire (not shown) and connecting the end of the winding through the longitudinal groove 7 to the protrusion of the pin terminal 8, a common yoke coil for mounting on a circuit board can be easily made.

Fig. 3 shows the appearance of the second embodiment, and this core insulating case is of a vertical type (the axial direction of the cylindrical core is parallel to the circuit board) for a normal multi-yoke coil. It is a split type that covers both sides in the axial direction.

In the figure, the divided insulating case 12 includes an outer cylinder 13,
It consists of an inner cylinder 14, a bottom 15, and a support terminal block 16.
The terminal block 16 extends outward from the bottom 15 on the outer surface of the outer cylinder 13, and has a deep vertical groove 17 in its extending end surface.
A shallow horizontal groove 18 is formed, and stud-like terminals 19 as shown in FIG. 4 are implanted in both sides of the vertical groove 17 with the heads facing down and the pointed ends protruding upward.

The outer cylinder 13, inner cylinder 14, and bottom 15 cover a cylindrical core (not shown) from both sides in the axial direction, and the support terminal block 16 is divided into a pair so that it becomes an integrated terminal block as shown in FIG. After assembling the insulating case 12, the winding wire (not shown) is passed through the internal space of the inner cylinder 14.
By passing the ends through the vertical grooves 17 and the horizontal grooves 18 and connecting them to the pointed ends of the terminals 19, a leadless chain-yoke coil that can be attached to a circuit board by reflow soldering can be produced.

[Effect of idea]

As explained above, according to this invention, since the insulating case and the support terminal block are integrated, there is no need to use adhesive, and a cylindrical coil for mounting on a board can be manufactured at low cost with less man-hours than before. Furthermore, even if the winding is a thin wire, it is possible to create a coil that is easy to handle and can be easily attached to a circuit board by simply connecting it to the terminal of the terminal block.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing one embodiment of this invention, Fig. 2 is a front view of the same embodiment, Fig. 3 is an external perspective view showing another embodiment of this invention, and Fig. 4 is a terminal view. It is an external perspective view showing an example. 1... Insulation case body, 2, 13... Outer cylinder,
3,14...Inner cylinder, 4,15...Bottom, 6,16...
... Support terminal block, 7, 17 ... Vertical groove, 8 ... Pin terminal, 9 ... Lid, 12 ... Divided insulation case, 19
...Rib-shaped terminal.

Claims (1)

[Scope of utility model registration request] A core insulating case consisting of a pair of split insulating cases covering the surface of a cylindrical core or an insulating case body and an insulating lid, characterized in that a support terminal block is integrally provided on the outer surface of the outer cylinder of the insulating case. insulation case.