Magnetic core winding antenna structure suitable for SMT assembly

Abstract

The utility model provides a magnetic core winding antenna structure suitable for SMT (Surface Mount Technology) assembly, which reduces the volume of an antenna module, enables the antenna module to be mounted in an SMT mode, and enables the connection of the antenna module to be rapid and efficient. The plastic seat comprises a mounting cavity and a welding support plate, and the non-welding surface of the welding support plate is provided with a raised mounting cavity; a magnetic core including a winding shaft; a winding coil; a red copper sheet assembly; and a mylar film; the winding coil is wound around the winding shaft, the two ends of the winding coil are arranged in an outward protruding mode to form connecting parts, the bottom of the magnetic core and the bottom of the winding coil are arranged in an installation cavity of the plastic base, and a red copper sheet assembly is arranged in a supporting plate at the bottom of the plastic base in advance. The connecting parts of the red copper sheet and the winding coil are combined to form corresponding welding spots exposed out of the bottom of the welding support plate; the inner surfaces of the two ends of the mylar in the length direction are connected with the upper surface of the integral structure formed by the magnetic core and the winding coil in an attached mode.

Description

Technical Field

[0001] This utility model relates to the technical field of antenna assembly, specifically to a magnetic core wire-wound antenna structure suitable for SMT assembly. Background Technology

[0002] When assembling electronic devices, antenna modules need to be assembled onto circuit boards. Current technology generally requires manually arranging the antenna wires before soldering them onto the circuit board. In actual assembly, the antenna module assembly is time-consuming and labor-intensive. Moreover, the structure of such antennas that require wire arrangement is large, occupying a lot of space in electronic devices, thus hindering the miniaturization process of electronic devices. Therefore, there is an urgent need to develop an antenna structure that can match the miniaturization of electronic devices and enable fast and efficient connection of antenna modules. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a magnetic core wound antenna structure suitable for SMT assembly, which reduces the size of the antenna module and enables the antenna module to be mounted via SMT, resulting in fast and efficient antenna module connection.

[0004] A magnetic core wire-wound antenna structure suitable for SMT assembly, characterized in that it comprises:

[0005] A plastic base includes a mounting cavity and a welded support plate, wherein a raised mounting cavity is provided on the non-welded surface of the welded support plate;

[0006] A magnetic core, comprising a winding spool;

[0007] Wire-wound coil;

[0008] Copper sheet assembly;

[0009] And melatonin;

[0010] The winding coil is wound around the winding shaft and its two ends are respectively convex to form a connecting part. The bottom of the magnetic core and the winding coil are placed in the mounting cavity of the plastic base. A copper sheet assembly is preset in the bottom support plate of the plastic base. The connecting part of the copper sheet and the winding coil are combined to form a corresponding solder point exposed at the bottom of the welding support plate.

[0011] The inner surfaces at both ends of the Mylar sheet along its length are respectively attached to the upper surface of the integral structure formed by the magnetic core and the winding coil. The outer surface of the Mylar sheet is used for adsorption of the entire antenna module during SMT assembly.

[0012] Its further features are:

[0013] The magnetic core is provided with stop blocks at both ends along its length. The stop blocks are convex relative to the winding shaft, so that the winding coil body does not convex beyond the outer surface of the stop blocks.

[0014] The inner surfaces of both ends of the Mylar sheet along its length are respectively bonded to the upper surface of the stop block by an adhesive structure.

[0015] When the copper sheet assembly includes only the middle copper sheet, the middle copper sheet is embedded in the welding support plate. A protruding part is formed in the middle of the length direction of the middle copper sheet. The protruding part is exposed on the welding surface of the welding support plate. Welding winding coils are respectively sleeved at both ends of the length direction of the welding support plate. The welding winding coils form corresponding welding point areas corresponding to the surface area position of the welding surface.

[0016] The welding support plate is provided with a winding notch corresponding to the position of the welding winding coil to ensure the stable and reliable setting of the welding winding coil;

[0017] When the copper sheet assembly includes a middle copper sheet and two welding copper sheets at both ends, the middle copper sheet is embedded in the welding support plate, and a protruding part is formed in the middle of the length direction of the middle copper sheet. The protruding part is exposed on the welding surface of the welding support plate. The two welding copper sheets at both ends are embedded at the ends of the length direction of the welding support plate, and the welding position of the welding copper sheets is exposed on the welding surface of the welding support plate. The protruding wires at both ends of the winding coil protrude outward from the corresponding ends of the mounting cavity and are welded to the corresponding ends of the welding copper sheets.

[0018] When the copper sheet for welding is only a flat plate structure, the convex wire body includes an convex connecting wire, a bending transition wire, a first horizontal pressing wire, a bending turning wire, and a second horizontal pressing wire. The two surfaces at both ends of the welding support plate along its length direction are respectively provided with wire body positioning grooves. The first horizontal pressing wire and the second horizontal pressing wire are respectively embedded in the corresponding wire body positioning grooves and welded to the corresponding surfaces of the copper sheet for welding of the flat plate structure.

[0019] Preferably, the copper sheet for welding is provided with a concave guide groove at the position corresponding to the welding surface, and the corresponding second horizontal pressing wire is embedded in the concave guide groove and welded to the copper sheet for welding to ensure accurate and convenient positioning;

[0020] When the copper sheet for welding includes a flat plate structure and a folded edge structure, the corresponding end of the convex wire is welded to the corresponding folded edge structure.

[0021] The mounting cavity includes two protruding side plates and corresponding end plate structures. The lower middle sections of the stop blocks at both ends of the magnetic core along its length are fitted and embedded in the mounting cavity formed by the side plates and end plate structures, ensuring reliable and stable installation of the magnetic core and the wound coil.

[0022] With the structure of this utility model, this antenna structure is suitable for WPC antennas, RFID antennas, or similar antennas. It combines a conventional magnetic core winding antenna with an in-mold injection molded copper sheet assembly. The connection between the copper sheet and the winding coil forms corresponding solder points exposed on the bottom of the welding support plate. Mylar plates are used for SMT transfer operations, allowing the entire antenna module to be mounted in SMT form. This saves antenna structure space, reduces the time required for traditional manual cable management and soldering, improves quality consistency, and increases production efficiency and yield. Attached Figure Description

[0023] Figure 1 This is a front view of a specific embodiment of the present utility model;

[0024] Figure 2 This is a bottom view of a specific embodiment of the present utility model;

[0025] Figure 3 This is a three-dimensional exploded view of a specific embodiment of the present invention;

[0026] Figure 4 This is a front view of a specific embodiment two of the present utility model;

[0027] Figure 5 This is a bottom view of a specific embodiment two of this utility model;

[0028] Figure 6 This is a three-dimensional exploded view of a specific embodiment two of this utility model;

[0029] Figure 7 This is a front view of a specific embodiment three of this utility model;

[0030] Figure 8 This is a bottom view of a specific embodiment three of this utility model;

[0031] Figure 9 This is a three-dimensional exploded view of a specific embodiment three of this utility model;

[0032] The names corresponding to the serial numbers in the diagram are as follows:

[0033] Central solder joint area 1, side solder joint area 2;

[0034] Plastic base 10, mounting cavity 11, side plate 111, end plate structure 112, welding support plate 12, winding notch 121, wire positioning groove 122, magnetic core 20, winding shaft 21, stop block 22, winding coil 30, coil body 31, connecting part 32, welding winding coil 321, outwardly protruding connecting line 322, bending transition line 323, first horizontal pressing line 324, bending turning line 325, second horizontal pressing line 326, copper sheet assembly 40, middle copper sheet 41, protruding part 411, welding copper sheet 42, concave guide groove 421, folded edge structure 43, Mylar sheet 50. Detailed Implementation

[0035] A magnetic core wire-wound antenna structure suitable for SMT assembly, see Figures 1-9 It includes a plastic base 10, a magnetic core 20, a winding coil 30, a copper sheet assembly 40, and a Mylar sheet 50;

[0036] The plastic base 10 includes a mounting cavity 11 and a welding support plate 12. A protruding mounting cavity 11 is provided on the non-welding surface of the welding support plate 12.

[0037] The magnetic core 20 includes a winding spool 21 located at the middle of its length;

[0038] The coil body 31 of the winding coil 30 is wound around the winding shaft 21, and the two ends are respectively provided to form connecting parts 32. The bottom of the magnetic core 20 and the winding coil 30 are placed in the mounting cavity 11 of the plastic base 10. A copper sheet assembly 40 is pre-set in the bottom support plate 12 of the plastic base 10. The copper sheet assembly 40 and the connecting parts 32 of the winding coil 30 are combined to form corresponding solder points exposed on the bottom of the welding support plate.

[0039] The inner surfaces at both ends of the Mylar sheet 50 along its length are respectively attached to the upper surface of the integral structure formed by the magnetic core 20 and the wound coil 30. The outer surface of the Mylar sheet 50 is used for adsorption of the entire antenna module during SMT assembly.

[0040] In specific implementation: Stop blocks 22 are provided at both ends of the length direction of the magnetic core 20. The stop blocks 22 are convex relative to the winding shaft 21, so that the coil body 31 does not convex beyond the outer surface of the stop blocks 22.

[0041] The inner surfaces of both ends of the Mylar sheet 50 along its length are respectively bonded to the upper surface of the stop block 22 by an adhesive structure.

[0042] In specific implementation: the mounting cavity 11 includes two protruding side plates 111 and corresponding end plate structures 112. The middle and lower sections of the stop blocks 22 at both ends of the magnetic core 20 in the length direction are adapted to fit and embedded in the mounting cavity 11 formed by the side plates 111 and the end plate structures 112 to ensure reliable and stable installation of the magnetic core 20 and the winding coil 30.

[0043] Specific Implementation Example 1, see Figures 1-3 When the copper sheet assembly 40 includes only the middle copper sheet 41, the middle copper sheet 41 is embedded in the welding support plate 12. A protruding part 411 is formed in the middle of the length direction of the middle copper sheet 41. The protruding part 411 is exposed on the welding surface of the welding support plate 12, forming the middle welding point area 1. Welding winding coils 321 are also respectively sleeved at both ends of the length direction of the welding support plate 12. The welding winding coils 321 form corresponding welding point areas 2 on both sides corresponding to the surface area position of the welding surface.

[0044] The welding support plate 12 is provided with a winding notch 121 corresponding to the position of the welding winding coil 321 to ensure the stable and reliable setting of the welding winding coil 321.

[0045] For specific embodiments two and three, see Figures 4-9 When the copper sheet assembly 40 includes a middle copper sheet 41 and two welding copper sheets 42 at both ends, the middle copper sheet 41 is embedded in the welding support plate 12. A protrusion 411 is formed in the middle of the length direction of the middle copper sheet 41. The protrusion 411 is exposed on the welding surface of the welding support plate 12, forming the middle welding point area 1. The two welding copper sheets 42 at both ends are embedded at the ends of the length direction of the welding support plate 12. The welding position of the welding copper sheets 42 is exposed on the welding surface of the welding support plate 11, forming the corresponding two-sided welding point areas 2. The protruding wires at both ends of the winding coil 30 protrude outward from the corresponding ends of the mounting cavity 11 and are welded to the corresponding ends of the welding copper sheets 42.

[0046] See Specific Implementation Example 2 Figures 4-6 When the copper sheet 42 for welding is only a flat plate structure, the convex wire body includes an convex connecting line 322, a bending transition line 323, a first horizontal pressing line 324, a bending turning line 325, and a second horizontal pressing line 326. The two surfaces at both ends of the welding support plate 12 along the length direction are respectively provided with wire body positioning grooves 122. The first horizontal pressing line 324 and the second horizontal pressing line 326 are respectively embedded in the corresponding wire body positioning grooves 122 and welded to the corresponding surfaces of the copper sheet 42 for welding of the flat plate structure.

[0047] The copper sheet 42 for welding has a recessed guide groove 421 at the position corresponding to the welding surface. The corresponding second horizontal pressure line 326 is embedded in the recessed guide groove 421 and welded to the copper sheet 42 for welding, ensuring accurate and convenient positioning.

[0048] Specific Implementation Example 3, see Figures 7-9 When the copper sheet 42 used for welding includes a flat plate structure and a folded edge structure 43, the corresponding end of the convex wire body is welded to the corresponding folded edge structure 43.

[0049] In practice, the positions of the Mylar sheet 50 and the plastic base 10 can be interchanged vertically or arranged horizontally, depending on the actual assembly requirements.

[0050] The principle is as follows: This antenna structure is suitable for WPC antennas, RFID antennas, or similar antennas. It combines a conventional magnetic core wire-wound antenna with an in-mold injection-molded copper sheet assembly. The connection between the copper sheet and the wire-wound coil forms a corresponding solder point exposed on the bottom of the welding support plate. Mylar plates are used for SMT transfer operations, allowing the entire antenna module to be mounted in SMT form. This saves antenna structure space, reduces the time required for traditional manual wire arrangement and manual soldering, improves quality consistency, and increases production efficiency and yield.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A magnetic core wound antenna structure suitable for SMT assembly, characterized in that, It includes: Plastic seat, including installation cavity, and the non-welding surface of the welding support plate is provided with a raised installation cavity; Magnetic core, including winding shaft; Winding coil; Copper sheet assembly; And Mylar sheet; The winding coil is wound around the winding shaft, and the two ends of the winding coil are respectively provided with a protruding connection part. The magnetic core and the bottom of the winding coil are placed in the installation cavity of the plastic seat. The bottom support plate of the plastic seat is pre-provided with a copper sheet assembly. The copper sheet and the connection part of the winding coil are combined to form corresponding welding points exposed to the bottom of the welding support plate. The inner surface of the two ends of the Mylar sheet is respectively attached to the upper surface of the whole structure formed by the magnetic core and the winding coil. The outer surface of the Mylar sheet is used for SMT assembly and adsorption operation of the whole antenna module.

2. A magnetic core wound antenna structure suitable for SMT assembly according to claim 1, characterized in that: The two ends of the magnetic core are provided with stop blocks, and the stop blocks are arranged outside the winding shaft.

3. A magnetic core wound antenna structure suitable for SMT assembly according to claim 2, characterized in that: The inner surface of the two ends of the Mylar sheet is respectively attached to the upper surface of the stop block through the glue structure.

4. A magnetic core wound antenna structure suitable for SMT assembly according to claim 1, characterized in that: When the copper sheet assembly only includes a middle copper sheet, the middle copper sheet is pre-embedded in the welding support plate. The middle copper sheet forms a protruding part in the middle of the length direction. The protruding part is exposed to the welding surface of the welding support plate. The two ends of the welding support plate are respectively provided with a welding winding coil. The welding winding coil forms a corresponding welding point area corresponding to the surface area of the welding surface.

5. A magnetic core wound antenna structure suitable for SMT assembly according to claim 4, characterized in that: The welding support plate is provided with a winding notch corresponding to the position of the welding winding coil.

6. A magnetic core wound antenna structure suitable for SMT assembly according to claim 1, characterized in that: When the copper sheet assembly includes a middle copper sheet and two end welding copper sheets, the middle copper sheet is pre-embedded in the welding support plate. The middle copper sheet forms a protruding part in the middle of the length direction. The protruding part is exposed to the welding surface of the welding support plate. The two end welding copper sheets are pre-embedded in the length direction of the end of the welding support plate. The welding position of the welding copper sheet is exposed to the welding surface of the welding support plate. The protruding lines at the two ends of the winding coil are respectively installed in the corresponding end of the installation cavity and welded to the welding copper sheet of the corresponding end.

7. A magnetic core wound antenna structure suitable for SMT assembly according to claim 6, characterized in that: When the welding copper sheet is only a flat plate structure, the protruding line includes a protruding connection line, a bending transition line, a first horizontal pressure line, a bending turning line, and a second horizontal pressure line. The two surfaces of the length direction of the welding support plate are respectively provided with a line body positioning groove. The first horizontal pressure line and the second horizontal pressure line are respectively embedded in the corresponding line body positioning groove and welded to the corresponding surface of the welding copper sheet of the flat plate structure.

8. A magnetic core wound antenna structure suitable for SMT assembly according to claim 7, characterized in that: The welding copper sheet is provided with an inner recess guide groove corresponding to the position of the welding surface. The corresponding second horizontal pressure line is embedded in the inner recess guide groove and welded to the welding copper sheet.

9. A magnetic core wound antenna structure suitable for SMT assembly according to claim 6, characterized in that: When the welding copper sheet includes a flat plate structure and a folded edge structure, the corresponding end of the protruding line is welded to the corresponding folded edge structure.

10. A magnetic core wound antenna structure suitable for SMT assembly according to claim 1, characterized in that: The installation cavity includes two raised side plates and corresponding end plate structures. The middle and lower segments of the stop blocks at the two ends of the length direction of the magnetic core are adaptively attached and embedded in the installation cavity formed by the side plates and the end plate structures.

Images