Integrated patch core-penetrating magnetic bead capable of preventing resonance and abnormal sound

Abstract

The utility model relates to an integrated patch core-penetrating magnetic bead for preventing resonance and abnormal sound, which comprises a magnetic core and a strip-shaped end pole piece, a through hole transversely penetrating through the magnetic core is arranged in the middle of the magnetic core, a groove transversely extending is arranged on the bottom surface of the magnetic core, the groove penetrates from the left end surface of the magnetic core to the right end surface of the magnetic core, and the through hole is parallel to the length direction of the groove. The end pole piece penetrates through the through hole, and the end parts of the two ends of the end pole piece are respectively bent, extend into the grooves and are fixed in the grooves through glue. According to the utility model, the bottom surface of the magnetic core is provided with the transversely extending grooves, and the end parts of the two ends of the end pole pieces are glued and fixed in the grooves, so that abnormal sound caused by a loose assembly structure of the magnetic core and the end pole pieces is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chip-type electronic components, and in particular to an integrated chip through-hole magnetic bead for preventing resonance and abnormal sound and a manufacturing method thereof. Background Art

[0002] Through-hole ferrite beads originated in the 1960s. Their main function is to suppress the generation of high-frequency abnormal noise and spike interference in the circuit. With the rapid development of the electronic information industry, various circuits have higher and higher requirements for noise suppression, and the demand for through-hole ferrite beads is also rising. Cost-effective through-hole ferrite beads have become the preferred product for filtering devices.

[0003] In response to the trend of miniaturization and SMD of circuit boards, through-hole magnetic beads are currently in the process of shifting from plug-in to SMD. SMD through-hole magnetic beads will replace plug-in through-hole magnetic beads in the future. The existing technology of SMD through-hole magnetic beads is to pass the tinned flat end pole piece through the flat hole of the integrated magnetic core, and the end pole piece is bent 90° twice to form a U-shape to surround the magnetic core to complete the product manufacturing process. The magnetic core and the end pole piece are loosely assembled, and the product will produce abnormal noise in the circuit due to resonance. Utility Model Content

[0004] The utility model aims to provide an integrated patch through-core magnetic bead and a manufacturing method for preventing resonance and abnormal noise, which can prevent the circuit from generating abnormal noise due to resonance caused by loose assembly of the magnetic core and the end pole piece.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An integrated patch through-core magnetic bead for preventing resonance and abnormal noise comprises a magnetic core and an elongated end pole piece, wherein a through hole which penetrates the magnetic core transversely is provided in the middle of the magnetic core, a groove which extends transversely is provided on the bottom surface of the magnetic core, the groove passes through the left end surface of the magnetic core to the right end surface of the magnetic core, the through hole is parallel to the length direction of the groove, the end pole piece passes through the through hole, and the end portions of both ends of the end pole piece are respectively bent and extend into the groove and fixed in the groove by gluing.

[0007] As a preferred solution, the ends of both ends of the terminal plate are respectively glued to the bottom surface of the groove to form an adhesive layer.

[0008] As a preferred solution, the widths of the two ends and the middle part of the terminal plate are equal, and the thicknesses of the two ends and the middle part of the terminal plate are equal.

[0009] As a preferred solution, the width of the through hole is greater than or equal to the width of the terminal plate.

[0010] As a preferred solution, the width of the through hole is 0-1 mm larger than the width of the terminal plate.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides a transversely extending groove on the bottom surface of the magnetic core, and glues the ends of the end pole pieces into the groove, thereby avoiding abnormal noise caused by the loose assembly structure of the magnetic core and the end pole pieces, and facilitating fully automated production;

[0013] The integration of the magnetic core eliminates the phenomenon of product failure caused by the separation of the assembly due to the amount or quality of glue;

[0014] The integration of the magnetic core helps the magnetic lines to form a smooth closed loop evenly in the product, avoiding the problem that the split magnetic core is blocked by the glue medium, resulting in a decrease in magnetization intensity and uneven magnetic field distribution, which leads to a decrease in product quality and affects the performance of the entire circuit.

[0015] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the magnetic core structure of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0019] Figure 4 yes Figure 3 A partial enlarged view of position A.

[0020] Description of the accompanying drawings:

[0021] 10-magnetic core; 11-through hole; 12-bottom surface; 13-groove; 20-end pole piece; 30-adhesive layer. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] like Figure 1-4 As shown, the utility model discloses an integrated patch through-core magnetic bead for preventing resonance and abnormal noise, comprising a magnetic core 10 and an elongated end pole piece 20, wherein a through hole 11 is provided in the middle of the magnetic core 10 and extends transversely through the magnetic core 10, and a transversely extending groove 13 is provided on the bottom surface 12 of the magnetic core 10, wherein the groove 13 extends from the left end surface of the magnetic core 10 to the right end surface of the magnetic core 10, and the through hole 11 is parallel to the length direction of the groove 13, and the end pole piece 20 passes through the through hole 11, and the end portions of both ends of the end pole piece 20 are respectively bent and extended into the groove 13 and fixed in the groove 13 by gluing. By setting a transversely extending groove 13 on the bottom surface 12 of the magnetic core 10, the ends of the end pole piece 20 are glued and fixed in the groove 13, so as to avoid abnormal noise caused by the loose assembly structure of the magnetic core 10 and the end pole piece 20, and facilitate fully automated production; the integration of the magnetic core 10 eliminates the product failure phenomenon caused by the separation of the assembly due to the amount of glue or the quality of glue; the integration of the magnetic core 10 is conducive to the uniform formation of a smooth closed loop of magnetic lines in the product, and avoids the split magnetic core 10 10 due to the obstruction of the glue medium, resulting in a decrease in magnetization intensity and uneven magnetic field distribution, thereby causing a decrease in product quality, and further affecting the performance of the entire circuit.

[0025] In order to prevent the ends of the terminal piece 20 from falling out of the groove 13 , the ends of the terminal piece 20 are respectively glued to the bottom surface 12 of the groove 13 to form an adhesive layer 30 .

[0026] In this embodiment, the widths of the two ends and the middle portion of the terminal plate 20 are equal, and the thicknesses of the two ends and the middle portion of the terminal plate 20 are equal.

[0027] The width of the through hole 11 is greater than or equal to the width of the terminal plate 20 , and the width of the through hole 11 is 0-1 mm greater than the width of the terminal plate 20 .

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An integrated patch through-hole magnetic bead for preventing resonance and abnormal sound, characterized in that: It includes a magnetic core and an end pole piece in the shape of an elongated strip. A through hole is provided in the middle of the magnetic core and runs through the magnetic core transversely. A groove is provided on the bottom surface of the magnetic core and extends transversely. The groove runs from the left end surface of the magnetic core to the right end surface of the magnetic core. The through hole is parallel to the length direction of the groove. The end pole piece passes through the through hole, and the end portions of both ends of the end pole piece are respectively bent and extend into the groove and fixed in the groove by gluing.

2. The integrated patch through-hole magnetic bead for preventing resonance and abnormal noise according to claim 1, characterized in that: The ends of both ends of the terminal plate are respectively glued to the bottom surface of the groove to form an adhesive layer.

3. The integrated patch through-hole magnetic bead for preventing resonance and abnormal noise according to claim 1, characterized in that: The widths of the two ends and the middle part of the terminal plate are equal, and the thicknesses of the two ends and the middle part of the terminal plate are equal.

4. The integrated patch through-hole magnetic bead for preventing resonance and abnormal noise according to claim 1, characterized in that: The width of the through hole is greater than or equal to the width of the terminal plate.

5. The integrated patch through-hole magnetic bead for preventing resonance and abnormal noise according to claim 4, characterized in that: The width of the through hole is 0-1 mm greater than the width of the terminal plate.

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