JPH04131918U - inductance parts - Google Patents

Abstract

(57) [Summary] [Purpose] To shorten the wiring distance to the outside and to facilitate connection with other terminals. [Structure] Windings 5a to 5j are wound around a bobbin 1 with terminals 2a to 2j according to a predetermined number of turns, and input and output ends of each winding are connected to each terminal. The magnetic bodies 3a and 3b are attached to this, and an insulating tape 4 for fixing the magnetic bodies is applied to the outer periphery. The potting material 6 is impregnated in vacuum so that the terminal on the bobbin protrudes from the potting material 6, and then hardened. This allows the terminal to protrude from the potting material, making it easier to connect to other devices.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is suitable for inductance parts such as transformers and coils used in three-dimensional wiring. In particular, the present invention relates to an inductance component that facilitates wiring to input and output terminals.

0002

[Conventional technology]

Conventionally, as an inductance component, for example, a transistor as shown in FIGS. 3 and 4 has been used. There is a

0003 In the figure, 13a and 13b are "E"-shaped magnetic bodies, 11 is a bobbin, and 18a 18f indicates a lead wire, and 19 indicates a coil portion wound around the bobbin 11. 20 is magnetic An insulating tape for fixing the magnetic bodies 13a and 13b is shown.

0004 This conventional transformer first has a predetermined number of turns and turns ratio on the bobbin 11. Wind the magnet wire with an insulating coating (e.g. polyester insulation) , the input and output ends of each winding are connected to lead wires 18a to 18f using solder. Ru. These lead wires 18a to 18f are covered with insulating tape to prevent insulation defects. They are each fixed in place using the The leads 18a-18f are acceptably fixed. And this A winding fixing tape 20 is wound around the entire circumference on the upper surface of the winding to form a coil assembly. ing.

[0005] After that, the magnetic bodies 13a and 13b are inserted into the coil assembly, and the outer periphery of these magnetic bodies is An insulating tape 24 is wound along the magnetic bodies 13a and 13b to fix the magnetic bodies 13a and 13b.

[0006] Additionally, the magnet wires in the coil assembly are not fixed to each other. Therefore, the insulation covering on the magnet wire may be damaged due to mechanical stress caused by vibration or impact. There is a risk that the cover may be damaged and a short circuit may occur between the lines. Therefore, the magnet wire In order to fix them together, they are impregnated with an insulating resin such as epoxy resin in a vacuum, and then Fix the wires between the magnet wires and the magnet wires between the top and bottom wires to each other. there was.

[0007] Note that Teflon wires with high dielectric strength are generally used as the lead wires 18a to 18f. Polyimide adhesives, which are compatible with epoxy adhesives, are used in Lines are also used. All of these wires are not single-core, but have a stranded wire structure (7 (from the book, etc.).

[0008]

[Problem that the idea aims to solve]

However, in conventional transformers, the magnet wires are not fixed together. Insulating resin is impregnated in a vacuum to protect the inside of the lead wire. It penetrates into the strands and hardens. Therefore, when soldering to the stranded wire of the lead wire, If so, cut the lead wire at the end where the insulating resin does not creep up inside the lead wire. , the lead wires must be soldered to the terminals inside the device, so connect the lead wires to the shortest possible distance. This may lead to deterioration of the electrical characteristics of the transformer. There was a problem that it was tilted.

[0009] Also, when making connections using lead wires, remove the insulation coating from the lead wires before When starting work, you must also be very careful not to pull on the lead wires. Therefore, there is also the disadvantage that the workability is poor.

0010 This invention was devised in view of the above problems, and shortens the wiring distance to the outside. In addition to improving the workability of external wiring, The purpose is to provide inductance components with improved performance.

[0011]

[Means to solve the problem]

In order to achieve the above purpose, the inductance component of the present invention forms an annular magnetic path. A magnetic material having a plurality of input and output ends and wound around a bobbin attached to the magnetic material. In an inductance component with a coil section, each of the above input and output Provide multiple bar-shaped terminals protruding from each end, and connect the corresponding input/output end to each terminal. At the same time, each terminal is exposed and the magnetic body and coil part are covered with potting material. This is the configuration.

0012

[Effect]

According to the inductance component with the above configuration, each exposed Make connections to the terminals. In this case, the terminal is rod-shaped, so you can solder it as is. In addition, by connecting it to its base end, the wiring distance can be shortened.

[0013]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows the fruit of this invention. FIG. 2 is a perspective view showing the inside of a transformer as an inductance component according to an example. FIG. 2 is a perspective view of a transformer according to an example.

[0014] In the figure, 1 is a bobbin, 2a to 2g are rod-shaped terminals protruding from the bobbin 1, and 3 a and 3b are magnetic materials forming an annular magnetic path, 4 is an insulating tape, and 5a to 5j are bobbins. 1 is a winding wound around the bobbin 1, 5 is a coil portion formed by winding the winding around the bobbin 1, and 6 is a coil portion formed by winding the winding around the bobbin 1. It is a potting material.

[0015] The transformer in this example is a commercially available one or a custom-made one. The windings 5a to 5j are respectively placed on the bobbin 1 so as to have the number of turns and the number of turns ratio for the input and output. is wound, and the input and output ends of each winding are connected by solder to terminals 2a to 2j at predetermined positions. The winding 5a is connected to the terminal 2a, the winding 5b is connected to the terminal 2b, and so on. . Note that when soldering, stress relief is set in advance for the windings 5a to 5j. It is written. Moreover, the magnetic bodies 3a and 3b are inserted into predetermined positions of the bobbin 1, and the magnetic bodies 3a and 3b are Insulating tape 4 is placed along the outer periphery of magnetic bodies 3a and 3b in order to fix them together. It is wound in 2 to 3 layers.

[0016] In the case of this embodiment, as shown in FIG. 1, E-shaped magnetic bodies 3a and 3b are used. The material used is phyllite. Outer circumference of magnetic bodies 3a, 3b Since the insulating tape 4 is wrapped around it two to three times, the magnetic bodies 3a and 3b are combined. I am forced to do so. Note that the same effect can be achieved even if a gap is provided between the magnetic bodies 3a and 3b. The insulating tape 4 is a tape made of polyester resin.

[0017] The bobbin 1 and the magnetic bodies 3a, 3b are evacuated using the potting material 6. Covered. The terminals 2a to 2j provided on the bobbin 1 are potted It protrudes from the surface of the material 6 and is exposed. Potting material 6 is in a vacuum state Since the pot is hardened after being made into The coating material 6 penetrates and fixes the windings to each other.

[0018] As a potting material, consider the operating temperature range, especially at low temperatures (0℃) or below. When used, the magnetic bodies 3a and 3b are compressed by heat shrinkage of the potting material. For example, use urethane to prevent the electrical properties of the magnetic material from being significantly deteriorated due to the application of stress. resins are used.

[0019] In addition, in this embodiment, the potting material 6 is made of It is shaped like a cube with a flat surface, which reduces the weight of the potting material. For this purpose, each corner may be cut off.

[0020] Therefore, according to the transformer according to the embodiment, the input and output of each winding is configured with metal terminals. Since it is made of .

[0021] In this case, the windings 5a to 5j may be connected directly to the terminals 2a to 2j by soldering. Therefore, compared to the conventional method of replacing lead wires, the work time can be reduced. Wear. In addition, since the terminals 5a to 5j are provided on the bobbin 1 at predetermined intervals, there is a gap between the terminals. This eliminates insulation defects and improves reliability.

[0022] In addition, since the bottom of the transformer is finished flat in a predetermined area, it is possible to can be easily adhesively fixed to the base. Furthermore, the adhesive area is also smaller than that of conventional technology. In this case, it depends only on the area of the bottom surface of the magnetic material, and the adhesion area is reduced. However, in the present invention, the fixing strength is more than twice that of the conventional technology, and the fixing strength is improved by several steps.

[0023] In addition, in this example, regarding the case where EE type magnetic bodies 3a and 3b are used. However, even if an EI type or UI type magnetic material is used instead of this, the above-mentioned problem will occur. Effects similar to those of the embodiment can be obtained.

[0024]

[Effect of the idea]

As explained above, according to the inductance component of the present invention, the input and output ends of the winding Consists of terminals, making wiring easier and reducing assembly man-hours. It has the effect of being able to Also, wiring can be done in the shortest possible distance. In addition to reducing DC resistance, it also reduces stray capacitance, improving device performance. There is an effect that can improve

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the inside of a transformer according to an embodiment of the present invention.

FIG. 2 is an overall perspective view showing a transformer according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a conventional inductance component.

FIG. 4 is a longitudinal cross-sectional view of a conventional inductance component.

[Explanation of symbols]

1,11 bobbin 2a-2j terminals 3a, 3b, 13a, 13b magnetic material 4,24 Insulating tape 5 Coil part 5a-5j Winding wire 6 Potting material 18a-18f lead wire 19 Winding wire 20 Winding fixing tape

Claims (1)

[Scope of utility model registration request] 1. An inductance component comprising a magnetic body forming an annular magnetic path and a coil portion wound around a bobbin and attached to the magnetic body and having a plurality of input/output ends, wherein the coil portion is wound around a bobbin. A plurality of rod-shaped terminals corresponding to each input/output end are provided protrudingly, and the corresponding input/output end is connected to each terminal, and each terminal is exposed and the magnetic material and coil part are covered with potting material. Characteristic inductance parts.