Magnetic component for through hole reflow soldering

Abstract

The utility model belongs to the technical field of magnetic components, and particularly relates to a magnetic component for through hole reflow soldering, which comprises an annular magnetic core and a magnetic core coil wound on the annular magnetic core, the tail end of the magnetic core coil is fixed on a terminal structure, the terminal structure adopts a plurality of wire clamping terminals, and the wire clamping terminals are fixed on the annular magnetic core. The tail end of the magnetic core coil is fixed in a groove of the wire clamping terminal, and the tail end of the wire clamping terminal is provided with a terminal chamfer.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic components, and in particular relates to a magnetic component used for through-hole reflow soldering. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Magnetic components are usually composed of windings and magnetic cores. They are essential power electronic devices for energy storage, energy conversion and electrical isolation. Magnetic components are indispensable in almost all power circuits. High-current magnetic components must meet the requirements of through-hole reflow soldering process. Special bases and covers need to be designed. At the same time, the precision of the holes and pins of the pads must be high. The tips of the pins should be designed to be tapered to make them easy to insert and not push solder. However, the winding wire diameter of high-current magnetic devices is relatively thick and cannot be wound. If thick wires are used directly as pins, the tolerance and relative position of the pin diameter will be difficult to meet the precision requirements of through-hole reflow soldering. The tips of the pins must also be tapered, and the process is also difficult to manufacture. Utility Model Content

[0004] To solve the above problems, the utility model proposes a magnetic component for through-hole reflow soldering, which adopts a terminal structure to replace the traditional outlet pins, and the terminals and the magnetic core coil are pressed and fixedly connected, thereby simplifying the magnetic core coil structure and eliminating the need for a top cover and a base structure.

[0005] According to some embodiments, a first solution of the present utility model provides a magnetic component for through-hole reflow soldering, using the following technical solution:

[0006] A magnetic component for through-hole reflow soldering comprises an annular magnetic core and a magnetic core coil wound on the annular magnetic core, the end of the magnetic core coil is fixed on a terminal structure, the terminal structure adopts a plurality of wire clamping terminals, the end of the magnetic core coil is fixed in a groove of the wire clamping terminal, and the end of the wire clamping terminal is provided with a terminal chamfer.

[0007] As a further technical limitation, the number of the magnetic core coils is at least two.

[0008] As a further technical definition, a magnetic component for through-hole reflow soldering also includes a magnetic element cover clamped on one side of the annular magnetic core.

[0009] Furthermore, a clamping plate is provided on the magnetic element cover, and the clamping plate is sleeved inside the annular magnetic core.

[0010] Furthermore, the magnetic element cover is provided with a plurality of through holes, and the direction of the through holes is consistent with the axial direction of the annular magnetic core.

[0011] Furthermore, the wire clamping terminal is arranged in the through hole.

[0012] Furthermore, the numbers of the clamping terminals, the through holes and the ends of the magnetic core coils remain consistent.

[0013] As a further technical limitation, the opening direction of the groove on the clamping terminal is consistent with the radial direction of the annular magnetic core.

[0014] As a further technical limitation, the end of the magnetic core coil is fixed in the groove of the clamping terminal by welding.

[0015] As a further technical definition, the outside of the magnetic core coil is provided with enameled wire or an insulating layer.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model adopts a terminal structure to replace the traditional outlet pin, and the terminal and the magnetic core coil are pressed and fixedly connected, which simplifies the magnetic core coil structure, does not require an upper cover and a base structure, and saves costs; the pin tip in the terminal structure can be chamfered to achieve convenience in inserting the magnetic component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 It is a schematic diagram of a main structural view of a magnetic component used for through-hole reflow soldering in an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of a top view of the structure of a magnetic component used for through-hole reflow soldering in an embodiment of the utility model;

[0021] Figure 3 It is a side view structural schematic diagram of a magnetic component used for through-hole reflow soldering in an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the exploded structure of a magnetic component used for through-hole reflow soldering in an embodiment of the utility model;

[0023] Among them, 1. annular magnetic core; 2. magnetic core coil; 3. terminal structure; 4. magnetic element cover; 31. wire clamping terminal; 32. groove; 41. clamping plate; 42. through hole. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0028] In the present utility model, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances, and they cannot be understood as limitations on the present utility model.

[0029] Example

[0030] The embodiment of the utility model provides a magnetic component for through-hole reflow soldering.

[0031] like Figure 1 , Figure 2 and Figure 4 A magnetic component for through-hole reflow soldering is shown, comprising an annular magnetic core 1, a magnetic core coil 2, a terminal structure 3 and a magnetic element cover 4; wherein, the magnetic core coil 2 is wound on the annular magnetic core 1, the end of the magnetic core coil 2 is fixed on the terminal structure 3, the magnetic element cover 4 is clamped on one side of the annular magnetic core 1, and a clamping plate 41 is arranged in the center of the magnetic element cover 4, and the clamping plate 41 is arranged inside the annular magnetic core 1 around which the magnetic core coil 2 is wound.

[0032] As one or more embodiments, the terminal structure 3 includes a plurality of wire clamping terminals 31, which are sleeved in the through holes 42 on the magnetic element cover 4, and the wire clamping terminals 31 extending from both sides of the through holes 42 are terminal chamfer structures and grooves 32 respectively; the grooves 32 are welded with magnetic core coils 2.

[0033] like Figure 3 As shown, the top ends of both sides of the magnetic component cover 4 in this embodiment are set as wedge-shaped surfaces, which facilitates the automatic tinning of the clamping terminal and avoids scalding the magnetic component cover 4 during the tinning process.

[0034] It should be noted that the number of the clamping terminals 31, the through holes 42 and the ends of the magnetic core coil 2 remain consistent; the magnetic core coil 2 uses thick copper wire or multi-strand wire, and an enameled wire or an insulating layer is provided on the outside.

[0035] When the magnetic component in this embodiment is used, the terminal chamfered structure can be directly plugged into the component to be used, thereby making component plugging convenient and improving plugging efficiency.

[0036] This embodiment uses a terminal structure to replace the traditional wire output pin, and the terminal and the magnetic core coil are pressed and then fixedly connected, which simplifies the magnetic core coil structure, does not require a top cover and a base structure, and saves costs; the pin tip in the terminal structure can be chamfered to facilitate the insertion of the magnetic component.

[0037] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0038] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A magnetic component for through-hole reflow soldering, characterized in that: It includes an annular magnetic core and a magnetic core coil wound on the annular magnetic core, the end of the magnetic core coil is fixed on a terminal structure, the terminal structure adopts a plurality of wire clamping terminals, the end of the magnetic core coil is fixed in a groove of the wire clamping terminal, and the end of the wire clamping terminal is provided with a terminal chamfer.

2. A magnetic component for through-hole reflow soldering as claimed in claim 1, characterized in that: The number of the magnetic core coils is at least two.

3. A magnetic component for through-hole reflow soldering as claimed in claim 1, characterized in that: It also includes a magnetic element cover which is clamped on one side of the annular magnetic core.

4. A magnetic component for through-hole reflow soldering as claimed in claim 3, characterized in that: A clamping plate is arranged on the magnetic element cover, and the clamping plate is sleeved inside the annular magnetic core.

5. A magnetic component for through-hole reflow soldering as claimed in claim 3, characterized in that: The magnetic element cover is provided with a plurality of through holes, and the direction of the through holes is consistent with the axial direction of the annular magnetic core.

6. A magnetic component for through-hole reflow soldering as claimed in claim 5, characterized in that: The wire clamping terminal is arranged in the through hole.

7. A magnetic component for through-hole reflow soldering as claimed in claim 5, characterized in that: The numbers of the clamping terminals, the through holes and the ends of the magnetic core coils remain consistent.

8. A magnetic component for through-hole reflow soldering as claimed in claim 1, characterized in that: The opening direction of the groove on the clamping terminal is consistent with the radial direction of the annular magnetic core.

9. A magnetic component for through-hole reflow soldering as claimed in claim 1, characterized in that: The end of the magnetic core coil is fixed in the groove of the clamping terminal by welding.

10. A magnetic component for through-hole reflow soldering as claimed in claim 1, characterized in that: The outside of the magnetic core coil is provided with enameled wire or an insulating layer.

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