JPH02113510A - Manufacture choke coil and choke coil - Google Patents

Abstract

PURPOSE:To obviate the winding treatment by fitting base boards inside and outside of a hollow core and connecting in spiral form the upper and lower ends of an inner and an outer printed conductors, arranged on the base boards in a required manner, at the upper and the lower sides. CONSTITUTION:For a elliptical ring shaped ferrite core 9, a required number of outside base boards 1 are laminated and fitted outside the outer periphery thereof, and similarly a required number of inside base boards 3 are laminated and fitted inside the inner periphery thereof, and these are held between an upper communicating base board 5 and a lower communicating base board 7 from above and below respectively. Printed conductors 6 are arranged on the upper communicating base board 5 at the upper side for communicating respective printed conductors 2, 4, and printed conductors 8 are arranged on the lower communicating base boards 7 at the lower side for communicating in spiral form the printed conductors 4 on the inner base boards 3 and the printed conductors 2 on the outer base boards 1. Thus, winding treatment for a wire is obviated, hence the cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention belongs to the field of coils, and relates to a choke coil and a method for manufacturing a choke fill without winding.

(Conventional technology λ) In the type that winds the wire around the drum core, it is necessary to wind the wire a large number of times in order to obtain the inductance. Therefore, the wire becomes thinner and the current 1 u current is kept small. In the type printed on a flat board, the spiral Because of this structure, it is still difficult to obtain inductance.The laminated type has an open magnetic path structure and can be made extremely compact, but the conductor part is sintered as one piece, so the conductor cannot have a large cross-sectional area and has a large resistance. It is difficult to conduct current.When using a core that forms a toroidal open magnetic path, there is a limit to the width of the wire that can be wound around it, and if the core is small enough, it may be extremely difficult to wind the wire, or the wire may be damaged. There were other problems.

(Problems to be Solved by the Invention) In view of the above, the present invention provides a method for manufacturing a choke coil that uses a hollow core and forms a closed magnetic circuit without winding, and the choke coil.

(Means for Solving the Problems) The first invention includes a substrate fitted inside and outside a hollow core, and the upper and lower ends of the inner and outer printed conductors arranged as required on the substrate are respectively connected in a spiral manner. It manufactures chalk fill.

In the choke fill of the second invention, an inner substrate is fitted into the hollow core at the same height as the core, an outer substrate is fitted into the outside at the same height as the above-mentioned height, and the outer periphery of the inner substrate is fitted. The required number of printed conductors with the required cross-sectional area are arranged vertically and vertically, and the same number of printed conductors as above are arranged vertically and vertically on the inner periphery of the outer board, and from above and below, the printed conductors of the inner board The printed conductor on the outer board is sandwiched between communication boards on which printed conductors are arranged to connect spirally.

(Function) In manufacturing, the punching of the board, the casting process of the printed conductor, and the assembly of the board are only processed; there is no winding process, and the conductor's cross-sectional area can be increased in terms of structure.

(Example) To explain this invention in more detail with reference to an example, as shown in FIG. A required number of printed conductors 2 having a cross-sectional area are vertically penetrated and arranged at required intervals, and as shown in FIG. The printed conductors 4 having the same cross-sectional area are vertically penetrated and arranged at the same intervals as the required number of printed conductors 2, and the upper conductor board 5 has the printed conductors 2.4 as shown in FIG. Printed conductors 6 for communication are arranged, and a bottom communication board 7 is formed.
As shown in FIG.
As shown in the figure, an oblong ring-shaped ferrite core 9 with a predetermined height is fitted with a predetermined number of layers of an outer substrate 1 on its outer periphery, and a predetermined number of layers of an inner substrate 6 on its inner periphery. The printed conductors &' to j' arranged on the outer periphery of the inner substrate 6 are connected to the inner periphery of the outer substrate 1. A to J of the printed conductors 2 arranged on the upper communication board 5 are connected to each other by A to J of the printed conductors 6 arranged on the upper communication board 5, and A' of the printed conductor 8 on the lower communication board 7 is connected to the printed conductor 4 of the inner board 6. Connect a of the printed conductor 2 of the outer board 1 to b of the printed conductor 2 of the outer board 1, sequentially shift the phase, and connect the lead wire 10 to the outer end of the last printed conductor J'. A lead wire 11 is connected to the outer end of the printed conductor 6 of the communication board 5 connected to the terminal A.

Therefore, the current input from the lead wire 11 is from a' to m to b of the printed conductor 6 of the communication board 5.
→ B−)b −)B → −−1−−−
- Engineering →j+J+, j'→JゝNow flows on the circuit where the fill is formed to the lead wire 10, forming a closed magnetic circuit. Note that in this example, the number of turns is extremely small for convenience, but the number of turns is not limited to this.
Furthermore, both the outer substrate 1 and the inner substrate 3 are not limited to thin walls, and those having the same thickness as the height of the ferrite core 9 can be manufactured.Furthermore, both printed conductors 6. 8 to the printed conductor 6 of the upper communication board 5
The printed conductors 2 on the outer board 1 are arranged at a predetermined inclination angle, and the printed conductors 4 on the inner board 6 are arranged at a predetermined angle.
can be implemented in an equal stacked array vertically arranged one above the other.

(Effects of the Invention) As described above, the present invention forms a chiyoke fill by connecting the printed conductors arranged on the substrate in a fill-like manner through a substrate that encloses a hollow core from inside and outside and from above and below. There is no winding process required, which not only reduces manufacturing costs, but also makes it possible to increase the cross-sectional area of the conductor, thereby reducing the number of turns.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the outer board, Fig. 2 is a plan view of the inner board, Fig. 6 is a back view of the upper communication board, Fig. 4 is a plan view of the lower communication board, and Fig. 5 is a plan view of the upper communication board. This is an assembly diagram of a choke coil shown upside down and shown as an owl. In the figure, 1 is the outer board, 2.4.6.8 is the printed conductor,
6 is an inner board, 5 is a top board, 7 is a bottom board, 9 is a ferrite core, and 10.11 is a lead wire. a------j is the arrangement order of the printed conductor 2, a---
----j' is the arrangement order of printed conductors 4, A---
--T is the arrangement order of the printed conductors 6, A'---J'
is the arrangement order of printed conductors 8. Procedural amendment date 12112, 1986

Claims (2)

[Claims] (1) A method for manufacturing a choke coil in which a substrate is inserted into the inside and outside of a hollow core, and the upper and lower ends of the inner and outer printed conductors arranged as required on the substrate are respectively connected in a spiral manner to form a closed magnetic circuit. . (2) An inner substrate is fitted inside the hollow core to the same height as the core, an outer substrate is fitted to the outside at the same height, and the outer periphery of the inner substrate has a required cross-sectional area. The required number of printed conductors are arranged vertically and vertically, and the same number of printed conductors are arranged vertically and vertically on the inner periphery of the outer board, and from above and below, the printed conductors of the inner board and the printed conductor of the outer board A choke coil that is sandwiched between a communication board on which printed conductors are arranged in a spiral pattern.