JPH0650962Y2 - Reel with pin terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a structure of a winding frame with pin terminals for an inductance element, which can be stably mounted on a substrate.

[Prior Art] FIGS. 4 and 5 show a conventional winding frame with pin terminals. This bobbin with a pin terminal is provided with flanges 11 and 11 'extending from the left and right ends of a cylindrical winding core 1 made of an electrically insulating material, and the flanges 1 and 2 at the left and right ends thereof.
Pin terminal planting portions 14, 14 'are provided below the outer sides of 1, 11'. A plurality of pin terminals 2 and 2'are planted below the collars 11 and 11 'along the opposite sides thereof by vertically penetrating the pin terminal planting portions 14 and 14'. Inside the ′, there are provided projecting leg portions 15 and 15 ′ and lead wire drawing grooves 16 and 16 ′ for drawing out the lead wires 31 and 41 to the pin terminals 2 and 2 ′.

The inductance element is wrapped around this winding frame with edge insulating tapes 5 and 5'which keep the insulation distance between the primary winding 3 and the secondary winding 4 near the left and right flanges 11 and 11 ', and between the left and right flanges 11 and 11'. The primary winding 3 is wound around, and the lead wire is a lead wire insulation tube.
7 and 7'are applied, and the interlayer insulating tape 6 is applied between the left and right flanges 11 and 11 '. Next, when the secondary winding 4 is performed, the edge insulating tapes 5, 5 ', the lead wire insulating tubes 7,
7 ', Apply interlayer insulating tape (not shown). Lead wire 31,
41 is a lead terminal insulating tube 7, 7 ', while passing over the edge insulating tape, passing through the lead wire drawing groove 16, 16', and planting the pin terminals 2, 2'planted downward. The upper portion of the pin terminal protruding from the upper surface of the portion 14 is soldered with a color. Finally, the I, E or U-shaped cores 10, 10 'are passed through the center hole 13 of the winding core 1 from the left and right, and fixed by a tape, a holder or an adhesive to assemble.

[Problems to be solved by the invention] In the case of the bobbin having this structure, in order to maintain the insulation distance between the primary winding 3 and the secondary winding 4, the edge insulating tape 5, 5 ', the lead wire insulating tube 7, 7'and interlayer insulation tape 6 etc. must be applied. Therefore, there are problems that the number of parts and the number of work steps are large, and the manufacturing process is long.

On the other hand, in order to secure insulation between the primary side winding and the secondary side winding and insulation between layers, a main winding frame having upper and lower flange portions, between which the primary winding is wound, is provided. It is also conceivable to provide a double reel structure that covers the outside of the primary winding and includes an intermediate reel around which the secondary winding is wound (Jitsuko Sho 55-189).
No. 67).

However, the invention described in Japanese Utility Model Publication No. 55-18967 relates to a coil bobbin having an extremely simple structure that does not have a pin terminal implantation portion, and a plurality of pin terminal implantation portions are provided on opposite sides of the left and right flanges. It does not have a structure in which the main winding frame provided with and the intermediate winding frame divided into two are abutted against each other in the vertical direction between the left and right flanges.
When a double reel structure such as the above-mentioned JP-B-55-18967 is adopted for such a reel with a pin terminal, in the manufacturing process,
It takes time and effort to fit the two divided intermediate reels between the left and right flanges in the vertical direction, and it is difficult to position and fit the main reel and the intermediate reel. Also, in order to insulate the lead wire of the secondary winding from the primary winding or core, it is necessary to provide a lead wire insulating tube or the like to insulate the lead wire of the secondary winding. There is a limit to mitigation.

[Means for Solving the Problems] In the present invention, a cylindrical core around which a primary winding is wound, a collar provided at the left and right ends of the cylindrical core, and the left and right collars are provided. A plurality of pin terminal implantation portions provided on opposite sides, a lead wire drawing groove provided between the plurality of pin terminal implantation portions for drawing out a lead wire of the primary winding, and the pin terminal implantation portion. A main bobbin having a pin terminal penetrating therethrough, and an upper intermediate bobbin and a lower intermediate bobbin formed by abutting the left and right flanges from above and below, respectively. A bobbin with a pin terminal including a bisected intermediate bobbin around which a secondary winding is wound, the lead wire being made of an insulating material and provided below the left and right side surfaces of the lower intermediate bobbin collar. An intermediate reel lead wire guide portion that can be fitted into the pullout groove, and the intermediate reel lead wire guide. The intermediate winding lead wire guide groove is formed in the lead portion and guides the lead wire of the secondary winding.

[Embodiment] An embodiment of the present invention will be described below.

1 is an exploded perspective view of an embodiment of a bobbin with pin terminals according to the present invention, FIG. 2 is a front view of the bobbin shown in FIG. 1 in combination, and FIG. 3 is a front view of FIG. A sectional view is shown. The same parts as those in FIGS. 4 and 5 described above are designated by the same reference numerals.

The main winding frame has a cylindrical winding core 1 and collars 11 and 11 'provided on both left and right ends thereof. Pin terminal planting portions 14, 14 'are provided below the outer sides of the collars 11, 11'. A plurality of pin terminals 2,2 'are vertically penetrated along the opposite sides of the pin terminal planting portions 14,14' to be planted, and the projecting legs are formed inside the pin terminals 2,2 '. The parts 15, 15 'are provided, the lead wires 31, 41 are drawn out from the pin terminals 2, 2', and the lead wire drawing grooves 16, 16 'into which the intermediate reel lead wire guide part 94 can be fitted are provided.

A gap corresponding to the primary winding 3 is formed in the main bobbin to maintain the insulation distance between the flanges 11 and 11 'in the vertical direction, and the intermediate bobbin fitting concave portion 82 and the intermediate bobbin engaging convex portion 92 are formed. The two-divided intermediate reels 8 and 9 formed by butting are used to form a double reel structure.

The two-divided intermediate winding frames 8 and 9 have a two-divided structure in which the intermediate winding frame fitting concave portion 82 and the intermediate winding frame fitting convex portion 92 are butted against each other while keeping the insulation distance in the vertical and horizontal directions, in order to maintain insulation. The intermediate reel collars 81, 81 ', 91, 91' and the intermediate reel reinforcing portions 83, 93 for reinforcing the butting are provided. Lower middle reel 9
Is an insulating material and is provided below the left and right side surfaces of the lower intermediate reel collars 91, 91 '. The intermediate reel lead wire guide portions 94, 94' that can be fitted into the lead wire pull-out grooves 16, 16 ', and the intermediate reels It has intermediate winding frame lead wire guide grooves 95, 95 'formed in the lead wire guide portions 94, 94', respectively.

In the winding frame with pin terminals of this embodiment, the primary winding 3 is provided on the tubular core 1, and the lead wire 31 of the primary winding 3 is guided to the pin terminal 2'side through the lead wire drawing groove 16 '. After that, the upper intermediate reel 8 and the lower intermediate reel 9 are fitted to the main reel, the secondary winding 4 is performed on the upper and lower intermediate reels 8 and 9, and then the secondary winding is performed. The lead wire 41 of the wire 4 is guided to the pin terminal 2 side through the intermediate winding lead wire guide groove 95.

That is, the inductance element winds the primary winding 3 around the main winding frame without insulation treatment, and the primary winding lead wire 31 of this primary winding 3 is pin terminal planted through the lead wire drawing groove 16 '. The upper end of the pin terminal 2'protruding from the upper surface of the installation portion is soldered by color. Next, the two-divided intermediate winding frames 8 and 9 are used as guides for the lead wire drawing grooves 16 and 16 'in the vertical direction, and the intermediate winding lead wire guide portions 94 and 94' are used for the lead wire drawing grooves 16 and 16 '.
The intermediate winding frame fitting concave portion 82 and the intermediate winding frame fitting convex portion 92 are abutted so as to be fitted in, and the secondary winding 4 is wound. Then, the secondary winding wire 41 is soldered to the upper end of the pin terminal 2 protruding from the upper surface of the pin terminal planting portion through the intermediate winding lead wire guide groove 95. After that, I, E or U-shaped cores are assembled and fixed by tape, holder or adhesive to assemble.

In this way, in the bobbin with pin terminals of this embodiment, when the upper intermediate bobbin 8 and the lower intermediate bobbin 9 are butted against the flange of the main bobbin from above and below, the lead wire drawing grooves 16, 16 'are formed. Since the intermediate winding lead wire guide portions 94, 94 'may be fitted into and abutted on each other, the positioning and fitting of the main winding frame and the intermediate winding frames 8, 9 become extremely easy.

Further, since the lead wire 41 of the secondary winding 4 is guided to the pin terminal 2 side through the intermediate winding lead wire guide groove 95 formed in the intermediate winding lead wire guide portion 94 made of an insulating material. The insulation between the lead wire 41 of the secondary winding 4 and the primary winding 3 and the above-mentioned I, E or U-shaped core is ensured.

[Effects of the Invention] As described above, according to the bobbin with pin terminals of the present invention, after the primary winding is performed on the main bobbin, the upper intermediate bobbin and the lower intermediate bobbin are fitted to each other. Secondary winding on the frame 2
Since the double winding frame structure is adopted, edge insulating tapes 5 and 5'and interlayer insulating tape, etc. for maintaining the insulation distance between the primary winding and the secondary winding are not applied, that is, the number of parts,
An inductance element with less work steps and manufacturing steps can be obtained.

In addition, a lead wire drawing groove is provided on the main reel,
Below the left and right sides of the lower intermediate reel collar, an intermediate reel lead wire guide that can be fitted into the lead wire lead-out groove of the main reel is provided, so positioning and fitting of the main reel and intermediate reel is extremely easy. It will be easier.

Further, an intermediate reel lead wire guide groove made of an insulating material is provided with an intermediate reel lead wire guide groove, and the lead wire of the secondary winding is connected to the pin terminal side through the intermediate reel lead wire guide groove. Since it will guide you, you can obtain high insulation between the lead wire of the secondary winding and the primary winding or core, and it is necessary to provide a lead wire insulation tube etc. to insulate the lead wire of the secondary winding. It is also possible to realize an inductance element having a smaller number of parts.

That is, in the present invention, a lead wire guide portion made of an insulating material is provided on the intermediate winding frame, and the lead wire guide portion is provided with a lead wire guide portion.
It not only guides the lead wire of the secondary winding but also insulates it, and also has the function of positioning the intermediate reel on the main reel, improving assembly workability and ease of soldering. Now, it is possible to obtain a great effect of high insulation which is not available in the conventional example.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a bobbin with pin terminals according to the present invention, FIG. 2 is a front view of the bobbin shown in FIG. 1 in combination, and FIG. FIG. 4 is a cross-sectional view showing a state in which the reels shown in the figure are combined, FIG. 4 is a perspective view of an example of a conventional reel with pin terminals, and FIG. 5 is a state in which the reels shown in FIG. 4 are combined. Sectional view. 1 ... Cylindrical core, 11, 11 '... Tsuba, 12 ... Core guide groove, 13 ... Center hole, 14, 14' ... Pin terminal installation part, 15, 1
5 '... protruding leg, 16, 16' ... lead wire drawing groove,
2 …… Pin terminal, 21 …… Pin terminal upper end, 3 …… Primary side winding, 31 …… Primary side winding lead wire, 4 …… Secondary side winding, 41
... Secondary winding wire, 5,5 'edge insulating tape, 6
...... Interlayer insulation tape, 7,7 ′ …… Lead wire insulation tube, 8 …… Upper intermediate reel, 81,81 ′ …… Upper intermediate reel collar, 82 …… Intermediate reel fitting recess, 83 …… Upper Intermediate reel reinforcing portion, 9 ... lower intermediate reel, 91,91 '... lower intermediate reel collar, 92 ... intermediate reel fitting convex portion, 93 ... lower intermediate reel reinforcing portion, 94 ... intermediate Reel lead wire guide section, 95 ... Intermediate reel lead wire guide groove.

Claims (1)

[Scope of utility model registration request] 1. A cylindrical winding core around which a primary winding is wound, flanges provided on the left and right ends of the cylindrical winding core, and a plurality of pins provided on opposite sides of the left and right flanges. A terminal planting part, a lead wire drawing groove provided between the plurality of pin terminal planting parts to draw out a lead wire of the primary winding, and a pin terminal provided penetrating the pin terminal planting part. A main winding frame having an upper intermediate winding frame and a lower intermediate frame formed by abutting the left and right flanges from above and below in the vertical direction. In a bobbin with a pin terminal, which includes a two-divided intermediate bobbin that is rotated, an intermediate bobbin lead made of an insulating material, which is provided below the left and right side surfaces of the lower intermediate bobbin collar and can be fitted into the lead wire drawing groove. A wire guide portion and the secondary winding formed on the intermediate winding lead wire guide portion; Pin terminal with the reel, characterized in that an intermediate winding frame lead-wire guide groove for guiding the lead wire.