KR101111189B1 - Terminal stand for inductor and inductor apparatus using the same - Google Patents

Abstract

The present invention relates to an inductor terminal block, by using a lead pin of the housing that can move up and down to implement a structure in which wiring and soldering with the inductor on the upper side of the housing, to facilitate the wiring work to improve productivity and soldering An inductor terminal block is provided to prevent the spreading of liquid by the lead.
To this end, the present invention includes a housing having a mounting groove for receiving the inductor, the first and second coils are wound in a ring-shaped core; And a lead pin that is supported to be movable in an up and down direction outside the mounting groove of the housing, an end of the coil is connected to an upper end exposed to the upper part of the housing, and a lower end exposed to the lower part of the housing is connected to a circuit board. do.

Description

INDUCTOR TERMINAL BLOCK AND INDUCTOR DEVICE USING THE SAME {TERMINAL STAND FOR INDUCTOR AND INDUCTOR APPARATUS USING THE SAME}

The present invention relates to an inductor terminal block and an inductor device using the same, and more particularly, by implementing a structure in which the wiring and soldering of the inductor on the upper side of the housing using a lead pin of the housing that can move up and down, The present invention relates to an inductor terminal block and an inductor device using the same for improving productivity by improving productivity and preventing lead liquid scattering by soldering.

Inductors are used as components in electrical and electronic circuits to provide electrical resistance or inductance. Coils that make up the inductor may be directly connected to the PCB board, but are often mounted on the PCB board using an inductor terminal block with an inductor terminal for electrical stability. In this case, the inductor is configured by winding a coil around a ring-shaped core.

In general, the inductor terminal block is composed of a housing in which the inductor is mounted therein, and a lead pin coupled to the housing and the substrate side to electrically connect the inductor to the substrate. At this time, four lead pins are coupled due to device characteristics of the inductor, and the inductor is electrically connected to each lead pin.

In addition, the inductor is inserted into the mounting groove formed on the lead pin coupling surface, and after winding the lead pin a predetermined number of times, the wound point is soldered and connected to the lead pin. This is a structure in which the inductor is connected to the lead pin depending on the soldering, which not only reduces the electrical safety due to the poor soldering, but also requires the winding operation required to connect the coil to the lead pin, thereby reducing productivity.

In the conventional inductor terminal block, when soldering the lead inductor to the point where the inductor is wound, if the shape of lead solidified on the four lead pins is uneven, the mounted state on the board may be inclined or the components may be shaken severely to cause connection failure. .

In addition, the conventional inductor terminal block has a mounting groove formed on the substrate side of the housing, and when soldering to mount the inductor on the substrate, the solder liquid is scattered and solidified in contact with the inductor. It may cause a defect.

Moreover, since the magnetic properties of the core can be sharply lowered by the eddy current loss in the high frequency region, it is necessary to improve the high frequency characteristics through the core having a laminated structure for this purpose.

In order to solve this problem, Utility Model Registration No. 439024 has a housing in which a mounting groove in which a coil is mounted is formed, and one end is integrally formed by being embedded in a substrate of the housing, and the other end is formed of a lead pin protruding to a surface facing the substrate. Inductor terminal blocks have been proposed.

The inductor terminal block is guided to the bottom of the housing through a guide groove formed on the outer periphery of each of the lead pins adjacent to each of the lead pins, and then connected to the lead pins and fixed by soldering. In addition, the conventional inductor terminal block has a groove in which the lead pin and the coil are recessed in the connection portion, and provides a space for soldering after the end of the coil is wound around the lead pin to accommodate the beads formed during soldering. As a result, the conventional inductor terminal block is mounted in a state where the housing is in close contact with the substrate.

Therefore, in the conventional inductor terminal block, in order to connect the coil and the lead pin wound on the core, the coil winding core is first mounted in the mounting groove, and then the four coil ends are guided in the housing using a tool such as a long nose. Guide it along, pull it to the bottom of the housing, wrap it around the outer circumference of the lead pins, and wire it for soldering. At this time, the connection work between the coil end and the lead pin is difficult to proceed the operation by automation and may cause a defect according to the individual differences of the workers.

Therefore, the prior art as described above is not only difficult to implement automation of the wiring work by winding the coils around the lead pins and soldering them, but also requires soldering so that the inductor may be solidified and short-circuited due to the lead solution. It is an object of the present invention to solve the problem.

Therefore, the present invention implements a structure in which wiring and soldering of the inductor are formed on the upper side of the housing by using the lead pins of the housing that can move up and down, thereby facilitating the connection work, improving productivity, and preventing scattering of the lead solution by soldering. An object of the present invention is to provide an inductor terminal block and an inductor device using the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In order to achieve the above object, the present invention includes a housing having a mounting groove for receiving an inductor, the first and second coils are wound in a ring-shaped core; And lead pins which are supported to be movable in an up and down direction outside the mounting groove of the housing, the end of the coil is connected to the upper end exposed to the upper part of the housing, and the lower end exposed to the lower part of the housing is connected to the circuit board. Include.

The housing may include a lead pin coupling part of the coil for connection with the lead pin and a lead pin coupling groove for accommodating the lead pin; And a guide groove for guiding the lead pin coupling part to a coupling point with the lead pin.

The lead pin coupling portion has a ring-shaped end portion for connection with the lead pin.

The housing forms a seating groove through which the lead pin can move up and down, and the periphery of the seating groove is recessed to a depth of depression of the guide groove.

The lead pin is pressed after the exposed upper end is made with the coil.

The housing forms a fixing protrusion in the center of the mounting groove to fix the position of the coil.

The fixing protrusion forms a protrusion for correspondingly engaging with a protrusion coupling portion formed in the inner circumference of the core cover of the coil.

On the other hand, the inductor device of the present invention, the inductor is wound around the first coil and the second coil having four lead pin coupling portions at both ends extending on the outer periphery of the ring-shaped core; A housing having a mounting groove accommodating the inductor at one center and four seating grooves extending from the mounting groove to accommodate the four lead pin coupling parts; And each of the four lead pins through which the lead pin coupling part is connected to one end exposed through the four seating grooves and exposed to the upper part of the seating groove, and the other end is exposed to the bottom of the housing.

The four lead pin coupling portion, characterized in that formed in a ring shape so that each of the four lead pins can be inserted.

The four lead pins are slidably inserted into the seating grooves in the vertical direction so that the exposed upper ends are pressed after the connection and soldering with the lead pin coupling portions.

In addition, the inductor device of the present invention, the fixing projection protruding from the mounting groove is inserted into the through hole of the inductor; And a pair of protrusions protruding from an outer circumference of the fixing protrusion, wherein the pair of protrusions are coupled to at least one pair of protrusion coupling portions protruding from an inner circumference of the core insulation core cover. .

The core of the inductor is composed of a plurality of laminated cores, characterized in that made of an amorphous material.

The housing is characterized in that it consists of an inverted hat-type.

As described above, the present invention forms a structure in which wiring and soldering with the inductor is formed on the upper side of the housing by using lead pins that can be moved up and down, thereby facilitating the wiring work, improving productivity, and scattering the lead solution by soldering. This prevents the electrical stability.

In addition, according to the present invention, by simply placing the inductor at a designated position in accordance with the mounting groove formed in the housing, the lead pin coupling part may be seated at the coupling point with the lead pin, thereby easily implementing automation of the wiring operation.

In addition, the present invention has the effect that can complete the wiring work only by lowering the lead pin to the lower surface of the housing.

1 is a perspective view of an inductor terminal block according to an embodiment of the present invention;
2 is a perspective view of an inductor mounted on the inductor terminal block of FIG. 1;
3 is a perspective view illustrating a state in which the inductor of FIG. 2 is coupled to the inductor terminal block of FIG. 1;
Figure 4a is an exploded perspective view showing the separation state of the inductor terminal block and the inductor and the PCB board,
Figure 4b is a perspective view showing the coupling state of the inductor terminal block and the inductor and the PCB substrate,
5A to 5C are graphs of types of stacked structures of cores, permeability, and core loss.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It can be easily carried out. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an inductor terminal block according to an embodiment of the present invention. FIG. 2 is a perspective view of an inductor mounted on the inductor terminal block of FIG. 1. 3 is a perspective view illustrating a state in which the inductor of FIG. 2 is coupled to the inductor terminal block of FIG. 1. FIG. 4A is an exploded perspective view illustrating a separated state of an inductor terminal block, an inductor, and a PCB board, and FIG. 4B is a combined perspective view illustrating a coupled state of the inductor terminal block, an inductor, and a PCB board. 5A to 5C are graphs of types of stacked structures of cores, permeability, and core loss.

The inductor terminal block 10 according to an embodiment of the present invention includes a housing 11 and lead pins 16a to 16d and housing an inductor 20 electrically connected to the lead pins 16a to 16d. It accommodates in (11). In this case, the lead pins 16a to 16d electrically connect the coils 24a and 24b and the substrate in the housing 11.

Here, although the number of the lead pins 16a to 16d is based on four of the most common number of terminals when the inductor 20 is applied to the device, the number of the lead pins 16a to 16d may be determined according to a specific purpose. In addition, although the lead pins 16a-16d showed the cross-sectional area circularly, it can also represent it as a flat rectangle.

First, the housing 11 is an inverted hat-type, and the upper surface of the housing 11 (ie, the upper surface of FIG. 1) receives the lead pin 16a at each corner while receiving the ring-shaped inductor 20. To 16d), the lower surface of the housing 11 (i.e., the lower surface of FIG. 1) is a ring-shaped inductor 20 to accommodate the ring-shaped inductor 20. At this time, the lower surface of the rectangular plane of the housing 11 serves as a locking step when the cylindrical portion is inserted into the through-hole of the PCB substrate and mounted (see FIGS. 4A and 4B). Here, the upper surface of the housing 11 will be described as limited to a rectangular plane, but may be implemented in a circular or various polygons.

In addition, the housing 11 forms a mounting groove 12 for accommodating the inductor 20 in which the coils 24a and 24b are wound around the outer circumference of the ring core. At this time, the mounting groove 12 is a circular groove corresponding to the ring-shaped inductor 20, the diameter and depth of the inductor 20 is formed slightly larger than the diameter and thickness of the inductor 20 to the outside in the side Avoid exposure.

The housing 11 forms a fixing protrusion 13 at an inner center of the mounting groove 12. At this time, the fixing protrusion 13 is coupled to the ring-shaped inductor 20 accommodated in the mounting groove 12 to fix the position of the inductor 20 so as not to move. To this end, the fixing protrusion 13 is formed to protrude from the bottom surface of the mounting groove 12 to be narrower than the inner diameter of the inductor 20, and formed on the inner circumference of the inductor 20 (ie, the core cover 21). At least one pair of protrusions 13a and 13b coupled to the protrusion coupling portions 22a and 22b is provided.

In addition, the housing 11 guides recessed inward to guide the lead pin coupling portions 23a to 23d of the inductor 20 from the opening point of the mounting groove 12 to the coupling point with the lead pins 16a to 16d. Grooves 14a to 14d are formed. That is, the guide grooves 14a to 14d seat the lead pin coupling portions 23a to 23d, which are ends drawn from the coils 24a and 24b of the inductor 20, at the coupling points with the lead pins 16a to 16d. Path.

Meanwhile, at each corner of the upper surface of the housing 11, seating grooves 15a to 15d at which lead pins 16a to 16d are electrically connected to the lead pin coupling portions 23a to 23d of the inductor 20 are formed. . The lead pins 16a to 16d are press-fitted through the housing 11 so as to move up and down in the mounting grooves 15a to 15d. At this time, the size of the seating grooves (15a to 15d) to secure a free space recessed about 1 to 3mm wider than the diameter of the lead pin coupling portion (23a to 23d), to the depth of depression of the guide groove (14a to 14d) Create free space. This maintains the same depth of depression from the guide grooves 14a to 14d to the seating grooves 15a to 15d, thereby pulling out the ends of the lead pin coupling portions 23a to 23d without bending according to different depression levels, and leading to the lead pin coupling portion. This is to improve the bonding force with the lead pins 16a to 16d by keeping the 23a to 23d horizontal.

Here, the lead pins 16a to 16d are coupled to the lead pin coupling portions 23a to 23d and then electrically connected to each other by soldering. At this time, the lead pin coupling portion (23a to 23d) is formed in the shape of the end that is coupled with the lead pin (16a to 16d) in order to facilitate coupling with the lead pin (16a to 16d). This may omit the process of winding the ends of the lead pins (23a to 23d) to the lead pins (16a to 16d) in order to couple to the lead pins (16a to 16d), the automatic connection process using a robot automation device It can be done.

In the present invention, after the lead pin coupling portions 23a to 23d of the inductor 20 are coupled with the lead pins 16a to 16d, soldering is performed to press the leading ends of the lead pins 16a to 16d, and the lower end of the housing 11 Lower to protrude downward.

In addition, after coupling the lead pins 16a to 16d and the lead pin coupling portions 23a to 23d with each other as described above, the circumference of the seating grooves 15a to 15d improves the mutual bonding force through soldering. You can also In particular, by having a recessed depth to some extent around the seating grooves 15a to 15d, it is possible to sufficiently secure a space for beads formed by soldering. As such, a free space may be secured around the seating recesses 15a to 15d to prevent scattering of the lead solution due to soldering, thereby preventing device defects due to short circuits between the inductors 20.

Meanwhile, the inductor 20 has a pair of coils 24a and 24b wound around the input side and the output side, and have an EMI filter (Electro-Magnetic Interference filter) and a switched-mode power supply (SMPS). It can be applied to noise removal at the input / output terminals of

The coils 24a and 24b of the inductor 20 are wound on the outer periphery of the primary side and the secondary side which are divided by the protrusion coupling portions 22a and 22b formed over half of the circumference at the inner end face of the core cover 21. At this time, the lead pin coupling portions 23a to 23d form a pair at each end of the primary and secondary sides of the coils 24a and 24b. Here, the core cover 21 is provided with a pair of two pairs of symmetrical dividing structure to contain a core core (not shown).

At this time, the core is preferably formed of a laminated structure having at least one layer. As such, the core may improve the magnetic properties and reduce the eddy current loss in the high frequency region by using the laminated structure.

Here, for comparison, the permeability of four cores (see FIG. 5A), that is, a non-divided single core (P1), a four-divided stacked core (P2), an eight-divided stacked core (P3), and a sixteen-divided stacked core (P4) (permeability) (see FIG. 5B) and core loss (see FIG. 5C) were measured and shown. Permeability was measured for the frequency range of 1 MHz and 0.1 MHz, and core loss was measured in the frequency range of 100 kHz and magnetic flux density of 0.3T. As shown in FIGS. 5B and 5C, the 16-divided stacked core P4 improves the permeability in the high frequency region and greatly reduces the core loss compared to the non-divided single core P1.

In this case, a ferrite or an amorphous material may be used as the core. In particular, in the case of ferrite, it is preferable to apply only a non-divided single core (P1), and in the case of an amorphous material, an iron (Fe) amorphous material. Alloys or cobalt (Co) -based amorphous alloys, and may be applied to laminated cores (ie, P2, P3, P4) as well as undivided single core (P1).

As described above, the inductor terminal block 10 is connected to the lead pin coupling portion (23a to 23d) by using the lead pin (16a to 16d) that can move up and down to facilitate the wiring work to improve productivity It can improve and prevent the lead liquid scattering by soldering.

Therefore, according to the present invention, the lead pin coupling portions 23a to 23d are coupled to the lead pins 16a to 16d by arranging the inductor 20 at a designated position in accordance with the mounting groove 12 formed in the housing 11. And the lead pins 16a to 16d are lowered to the lower surface of the housing 11 to complete the wiring work.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the spirit of the present invention. Various changes and modifications will be possible by those who have the same.

10: inductor terminal block 11: housing
12: mounting groove 13: fixing protrusion
13a and 13b: protrusions 14a to 14d: guide grooves
15a to 15d: mounting groove 16a to 16d: lead pin
20: inductor 21: core cover
22a, 22b: protruding coupling 23a to 23d: lead pin coupling
24a, 24b: coil

Claims (13)

A housing having a first and second coils having mounting grooves for receiving an inductor wound around a ring-shaped core; And
It is supported to be movable in the vertical direction outside the mounting groove of the housing, the ends of the first and second coils are connected to the upper end exposed to the upper portion of the housing, respectively, the lower end exposed to the lower portion of the housing on the circuit board Two pairs of lead pins connected;
Inductor terminal block comprising a. The method of claim 1,
The housing,
A seating groove for accommodating the lead pin coupling portion and the lead pin of the coil for connection with the lead pin; And
A guide groove for guiding the lead pin coupling part to a coupling point with the lead pin;
Inductor terminal block comprising a. 3. The inductor terminal block according to claim 2, wherein the lead pin coupling portion has an end portion formed in a ring shape for connection with the lead pin. 3. The inductor terminal block according to claim 2, wherein the lead pin is penetrated and coupled to the seating recess, and the seating recess is recessed to a depth of depression of the guide recess. The inductor terminal block according to claim 1, wherein the lead pin is pressurized with an exposed upper end after soldering with the coil. The inductor terminal block according to claim 1, wherein the housing forms a fixing protrusion at an inner center of the mounting groove to fix the position of the coil. 7. The inductor terminal block according to claim 6, wherein the fixing protrusion forms at least one pair of protrusions for correspondingly coupling with at least one pair of protrusion coupling parts formed on an inner circumference of the core cover of the coil. An inductor wound around first and second coils having four lead pin coupling portions at both ends extending around a ring-shaped core outer periphery;
A housing having a mounting groove accommodating the inductor at one center and four seating grooves extending from the mounting groove to accommodate the four lead pin coupling parts; And
Each of the four lead pins through which the lead pin coupling part is connected to one end exposed through the four seating grooves and exposed to the upper part of the seating groove, and the other end is exposed to the bottom of the housing;
Inductor device comprising a. The method of claim 8,
The four lead pin coupling parts, the inductor device, characterized in that formed in a ring shape so that each of the four lead pins can be inserted. The method of claim 8,
The four lead pins are inserted in the seating groove so as to be slidable in the vertical direction, the inductor device characterized in that the exposed upper end is pressed after the connection and soldering with the lead pin coupling portion. The method of claim 8,
A fixing protrusion protruding from the mounting groove and inserted into the through hole of the inductor; And
Further comprising a pair of protrusions protruding to the outer peripheral portion of the fixing projections,
And the pair of protrusions are coupled to at least one pair of protrusion coupling portions protruding from the inner circumference of the core insulation core cover. The method of claim 8,
The core of the inductor is composed of a plurality of laminated cores, characterized in that made of an amorphous material. The method of claim 8,
And said housing is of an inverted hat-type.

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