JP2532950Y2 - Toroidal coil with pin terminal - Google Patents

Description

[Detailed description of the invention] a. Purpose of the invention [Industrial application field] The invention is intended to hold and fix a toroidal coil used as an inductor in a circuit of an electronic device or the like on a printed circuit board, and to reduce a mounting area on the printed circuit board. The present invention relates to a structure of a toroidal coil with pin terminals to which the toroidal coil can be vertically attached.

[Conventional technology]

As shown in FIG. 4, the conventional pin terminal toroidal coil has pin terminals 4 serving as board mounting terminals 4a penetrating through four corners of a plate-like base 15 in the thickness direction of the base. A toroidal coil 12 and a plate-shaped base 15 are fixed with an adhesive 14 with a lead wire tied around the lead wire.
In this conventional toroidal coil with a pin terminal, when the lead wire of the toroidal coil 12 is wrapped around a portion protruding above the pin terminal 4, the toroidal coil 12 is pulled upward, and floats from the plate base 15, Since the toroidal coil 12 is in an unstable state, the toroidal coil
The plate 12 and the plate-shaped base 15 were fixed with the adhesive 14.

[Problems to be solved by the invention]

In the conventional toroidal core with pin terminals, it was necessary to fix the toroidal coil and the plate-shaped base using an adhesive. In addition, when a force is applied to the pin terminal when the lead wire is tangled, the terminal for mounting the substrate is easily moved and the pitch becomes unstable, so that it has been difficult to mount the terminal on the substrate using an automatic mounting apparatus. In order to solve these drawbacks, the present invention can stably hold the toroidal coil on the plate-like base without fixing with an adhesive, and further enhances the precision of the pitch of the terminal for mounting the substrate. A toroidal coil with pin terminals that can be mounted on a printed wiring board using an automatic mounting apparatus.

[Means for solving the problem]

The present invention provides a board mounting pin terminal at both ends of the lower surface for mounting on the board, and a protruding lead wire connecting pin terminal integrated with the board mounting pin terminal is provided at a front upper surface portion,
It consists of a base with pin terminals in which the storage part for installing the toroidal coil is concave in an arc shape in cross section. A U-shaped electrical insulator is mounted using the lead wire pin terminal as a support, and a gap is provided between an upper surface of the housing portion and a lower surface of the electrical insulator, and the two lead wires of the electrical insulator are provided. A groove for leading out a lead wire is provided in a portion between the pin terminals for lashing.
Pass the lead wire of the toroidal coil inward from the outside between the lead wire terminals of the gap and the lead wire groove between the two U-shaped legs of the electrical insulator upward. By passing through, the toroidal coil is once pulled down, and the lead wire of the toroidal coil is tied to the exposed portion of the lead terminal from the upper part of the electrical insulator, and soldering is applied to the printed wiring board. When mounted, a toroidal coil with pin terminals having high stability can be obtained.

That is, in the present invention, the toroidal core coated with an electrical insulator, the coiled toroidal coil, on the side opposite to the substrate mounting side, the cross section in the depth direction is formed of a substantially arc-shaped recess. It has a storage part, 2
A lead wire for connecting a book board mounting pin terminal and a portion penetrating to the other end and projecting toward the board mounting side as a board mounting pin terminal, and a portion projecting toward the housing portion side is connected to a lead wire drawn out from a winding. In a toroidal coil with a pin terminal mounted on a plate-like base on which two pin terminals serving as hairpin terminals are implanted, the lead wire terminal pin is provided at one end of the housing. A penetrating groove is provided, and a substantially U-shaped electric insulator having a lead wire drawing groove as an opening, the lead wire pin terminal penetrates each of the U-shaped legs. The coil is mounted on the plate-shaped base so as to protrude from the upper surface of the U-shaped leg and lead a lead wire between the U-shaped leg and the plate-shaped base. And the lead wire drawing groove Drawn by a pin toroidal coil with terminals, characterized in that are entwined to each said electrical projected from the insulator portion of the pin terminals for tying the lead wire.

[Action]

The toroidal coil with a pin terminal according to the present invention includes a housing portion provided on the upper surface, a board mounting pin terminal planted on the lower surface, and a lead wire integral with the board mounting pin terminal protruding from the housing portion. It is completed by incorporating a toroidal coil into a plate-shaped base composed of a pin terminal for connection and a U-shaped electric insulator attached to the pin terminal. In addition, since the storage portion has a hollow formed in a semicircular shape and the coil is installed in the hollow, the coil is stably installed. Further, a board mounting for fixing the base to the substrate is provided at two corners of the lower surface of the base at two corners of the lower surface of the base, the terminal having two lead wires for fixing the lead wire of the toroidal coil at the front end portion in the longitudinal direction of the upper surface of the base. Pin terminals are provided. Since the U-shaped electric insulator is integrally provided on the two lead wire terminal pins for leading the lead wire, the board mounting pin terminal is difficult to move. There is a gap between the lower surface of the electrical insulator and the upper surface of the housing, and a lead wire drawing groove is provided between the legs of the electrical insulator. Accordingly, the lead wire of the toroidal coil passes from the outside through the gap between the U-shaped electric insulator and the housing portion, and the electrical insulation attached with the two lead wire pin terminals as pillars. The toroidal coil is firmly fixed to the base by passing the lead wire through the inside of the lead wire drawing groove of the body and piercing the lead wire pin terminal projecting from the upper end of the U-shaped electric insulator. be able to.

〔Example〕

FIG. 3 shows a base 10 with a pin terminal for a toroidal coil according to the present invention. The base body consists of a storage part 6a with a groove 6b on the upper surface and four board mounting pin terminals planted on the lower surface.
1a, 5 and the groove 6b integrated with the board mounting pin terminal
And a U-shaped electrical insulator 7 having two lead wire connecting pin terminals 1 protruding from the housing portion 6a and being attached to the lead wire connecting pin terminals 1 and provided with lead wire drawing grooves 3. And the toroidal core 8 shown in FIG.
Is made of an electrically insulating material in which a toroidal coil 12 (hereinafter referred to as a coil) composed of a toroidal core 8 provided with a winding 11 is mounted on a housing portion.
A recess 6 for accommodating the coil 12 is provided in the accommodating portion 6a in the base body in which the coil 12 is installed, and the recess enhances stability by installing the coil 12. FIG. 1 shows that a gap 2 is provided between the front upper surface of the housing portion 6a and the lower surface of the electric insulator 7, and the lead wire of the coil 12 is provided in the gap 2 and the electric insulator 7. Drawer groove 3
, And shows a state where the lead wire is tied to the pin terminal for tying. Four board mounting pin terminals are provided at four corners of the lower surface of the base for mounting on the board. Also, of the board mounting pin terminals, two board mounting pin terminals at the front of the lower surface of the base penetrate the base and become two lead wire connecting pin terminals 1, and A U-shaped electrical insulator 7 having the two lead pins 1 for supporting the lead wire and having the lead wire lead-out groove 3 provided therein is attached, and the upper surface of the housing portion 6a and the electrical A toroidal coil with a pin terminal, which forms a gap 2 between the lower surface of the insulator and each of the lead terminal pins projecting from the upper surface of the electrical insulator. The lead wire 9 drawn out of the coil 12 passes through the gap 2 formed on the upper surface of the storage portion and the lower surface of the U-shaped electric insulator 7, pulls the coil 12 downward, and leads the electric insulator 7. The wire is pulled up through the wire drawing groove 3 and is hanged on the lead tying pin terminal 1 for tying the lead exposed above the electrical insulator 7. or,
On the lower side of the base, there is a board mounting pin terminal 1a through which the lead wire connecting pin terminal 1 penetrates, and at the rear, two board mounting pin terminals 5 implanted on the bottom surface of the base body 10.
Thus, a toroidal coil with pin terminals that can be mounted on a printed wiring board is obtained.

C. Effect of the Invention [Effect of the Invention] As described above, according to the toroidal coil with the pin terminal according to the present invention, it is not necessary to perform the fixing work with the adhesive for preventing the conventional coil from floating, and the automatic mounting machine can be used. It is possible to provide a toroidal coil with pin terminals that can be mounted on a printed circuit board.

[Brief description of the drawings]

FIG. 1 is a perspective view of a toroidal coil with a pin terminal according to the present invention. FIG. 2 is a perspective view of a toroidal coil. FIG. 3 is a perspective view of the base with pin terminals according to the present invention. FIG. 4 is a perspective view of a conventional toroidal coil with pin terminals. DESCRIPTION OF SYMBOLS 1 ... Pin terminal for lead-coupling, 1a ... Pin terminal for board mounting, 2 ... Void, 3 ... Groove for lead wire drawing, 4 ... Pin terminal, 4a ... Terminal for board mounting, 5 ... Pin terminal for board mounting, 6
... recess, 6a ... storage section, 6b ... groove, 7 ... electrical insulator, 8 ...
Toroidal core, 9 Lead wire, 10 Base with pin terminal, 11 Winding, 12 Toroidal coil, 14 Adhesive, 15
… Plate base

Claims (1)

(57) [Scope of request for utility model registration] 1. A toroidal coil having a winding formed on a toroidal core covered with an electrical insulator, and a coil having a substantially arc-shaped recess having a cross section in a depth direction on a side opposite to a substrate mounting side. It has a housing portion, two board mounting pin terminals at one end in the longitudinal direction, and a portion that penetrates the other end and protrudes toward the board mounting side is a board mounting pin terminal, and a portion that protrudes toward the housing portion is In a toroidal coil with a pin terminal mounted on a plate-like base on which two pin terminals serving as lead pin connecting terminals for connecting a lead wire drawn out of a winding are mounted at one end of the storage portion. Is provided with a groove through which each of the lead pin terminals penetrates,
An electrical insulator having a substantially U-shaped cross section with the lead wire lead-out groove as an opening, wherein the pin terminal for lead wire penetrates each of the U-shaped legs and the upper surface of the U-shaped legs. The coil is mounted on the plate-shaped base, and the lead wire passes through the gap and the lead wire drawing groove. A toroidal coil with a pin terminal, wherein the toroidal coil with a pin terminal is drawn out and flared at a portion of each of the lead terminal pins that protrudes from the electrical insulator.