A patch-type conical coil

Abstract

This utility model relates to the field of electronic component technology, and in particular to a surface-mount tapered coil, comprising a tapered coil body and an insulating base. The tapered coil body is wound around the insulating base and has two lead ends. The insulating base is provided with a first surface-mount electrode and a second surface-mount electrode respectively connecting the two lead ends. A top cover is provided on one side of the insulating base of the tapered coil body. The surface-mount tapered coil of this utility model has a top cover suitable for SMT automation, and the winding of the tapered coil body around the insulating base will not cause magnetic interference to the coil. During the surface-mount manufacturing process, it can also avoid the problem of deformation of the tapered coil body due to external stress such as collision. Furthermore, by using surface-mount electrodes and enameled leads as conductive terminals of the electrodes, excessive resistance will not be increased by using other electroplated conductive terminals, and environmental harm can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic components technology, and in particular to a surface-mount tapered coil. Background Technology

[0002] Plug-in tapered coils can be used in RF antennas and as transceivers in logistics equipment. Currently used tapered coils are all hollow structures without any base support. When handling them on a PCB, external forces can easily deform the coil, leading to abnormalities such as reduced electrical characteristics and operating frequencies, or even failure. To meet the demands of new equipment, SMT (Surface Mount Technology) designs are needed for automated production, and it is essential to avoid the quality and characteristic abnormalities caused by coil deformation due to external forces. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a patch-type tapered coil, including a tapered coil body and an insulating base. The tapered coil body is wound on the insulating base. The tapered coil body has two lead ends. The insulating base is provided with a first patch electrode and a second patch electrode that are respectively connected to the two lead ends. The insulating base is provided with a top cover on one side of the tapered coil body.

[0004] In some possible embodiments, the insulating base includes a base plate, a back plate is provided at one end of the base plate, a conical column is provided on the inner side of the back plate, the axial direction of the conical column is projected onto a vertical plane with a spatial component perpendicular to the base plate, the conical coil body is wound around the outer periphery of the conical column, the top cover is provided on the other end of the back plate opposite to the base plate, and the conical column is located between the top cover and the base plate.

[0005] In some possible embodiments, the first patch electrode and the second patch electrode are respectively disposed on opposite sides of the base plate, and the two lead ends are respectively wound around the corresponding first patch electrode and the second patch electrode by enameled wire.

[0006] In some possible embodiments, the base plate, back plate, and top cover are arranged in a C-shape.

[0007] In some possible embodiments, the projection of the base plate onto the horizontal plane is a non-right-angled parallelogram. The first patch electrode and the second patch electrode are respectively provided on the corresponding areas of the two obtuse angles of the base plate. The first patch electrode and the second patch electrode are arranged in parallel. The end faces of the first patch electrode and the second patch electrode are respectively flush with the areas corresponding to the two acute angles of the base plate.

[0008] In some possible embodiments, the projection of the back plate onto the vertical plane is a non-right-angled parallelogram, and the second patch electrode is disposed on the side of the back plate that is connected to the base plate and has an obtuse angle. The end face of the second patch electrode at one end is flush with the area corresponding to the acute angle at the other end of the back plate.

[0009] In some possible embodiments, a balancing block is provided on the side of the base plate opposite to the first patch electrode.

[0010] In some possible embodiments, the insulating base is made of LCP plastic.

[0011] In some possible embodiments, the width of the top cover is greater than the diameter of the large end of the tapered coil body.

[0012] Compared with the prior art, the advantages of this utility model are as follows: The surface-mount tapered coil of this utility model has a top cover suitable for SMT automation, and the tapered coil body is wound on an insulating base, which will not cause magnetic interference to the coil. During the surface-mount manufacturing process, it can also prevent the tapered coil body from deforming due to external stress such as collision. Furthermore, it uses surface-mount electrodes and enameled leads as conductive terminals of the electrodes, which will not increase the resistance excessively due to the use of other electroplated conductive terminals, and can reduce the harm to the environment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A three-dimensional structural diagram of the patch-type tapered coil provided in an embodiment of this utility model;

[0015] Figure 2 A three-dimensional structural diagram of the insulating base and the top cover provided for an embodiment of this utility model;

[0016] Figure 3 A front view of a patch-type tapered coil provided in an embodiment of this utility model;

[0017] Figure 4 Right view of a patch-type tapered coil provided in an embodiment of this utility model;

[0018] Figure 5 A bottom view of the patch-type tapered coil provided in an embodiment of this utility model.

[0019] Reference numerals: 1. Conical coil body, 11. Lead end, 2. Insulating base, 21. Base plate, 22. Back plate, 23. Conical column, 24. First patch electrode, 25. Second patch electrode, 26. Balance block, 3. Top cover. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1 to 5 The illustrated surface mount tapered coil includes a tapered coil body 1 and an insulating base 2. The tapered coil body 1 is wound around the insulating base 2. The tapered coil body 1 has two lead ends 11. The insulating base 2 is provided with a first surface mount electrode 24 and a second surface mount electrode 25 respectively connected to the two lead ends 11. The insulating base 2 is provided with a top cover 3 on one side of the tapered coil body 1. The top cover 3 can cooperate with the moving placement head of the SMT placement machine. During the production process, the moving placement head of the SMT machine can pick up the top cover 3 and accurately place the surface mount tapered coil onto the PCB pad.

[0022] The insulating base 2 is made of LCP plastic. LCP plastic is a new type of polymer material that generally exhibits liquid crystal properties in its molten state. This type of material has excellent heat resistance and molding and processing properties, as well as excellent electrical insulation properties. Its dielectric strength is higher than that of general engineering plastics, and it has good arc resistance. In an environment with an operating temperature of 200-300℃, it will not cause magnetic interference to the conical coil body 1. To further improve protection, the width of the top cover 3 is greater than the diameter of the large end of the conical coil body 1.

[0023] In some possible embodiments, the insulating base 2 includes a base plate 21, a back plate 22 at one end of the base plate 21, and a tapered column 23 on the inner side of the back plate 22. The axial projection of the tapered column 23 onto a vertical plane has a spatial component perpendicular to the base plate 21. The tapered coil body 1 is wound around the outer periphery of the tapered column 23. A top cover 3 is located on the other end of the back plate 22 opposite to the base plate 21, and the tapered column 23 is located in the area between the top cover 3 and the base plate 21. The tapered column 23 can support the interior of the tapered coil body 1, preventing deformation of the tapered coil body 1 due to external forces when it is picked up and mounted on the PCB by SMT. In fact, the bottom of the tapered column 23 is parallel to the base plate 21, so that the axial direction of the tapered column 23 has a certain angle with the base plate 21, which can occupy less space and improve the compactness of the structure. The tapered column 23 actually extends along the axial direction of the base plate 21, and its large end is installed on the inner side of the back plate 22.

[0024] In some possible embodiments, the first patch electrode 24 and the second patch electrode 25 are respectively disposed on opposite sides of the two ends of the base plate 21. The two lead ends 11 of the conical coil body 1 are each wound around the corresponding first patch electrode 24 and second patch electrode 25 via enameled leads 12. The positions of the first patch electrode 24 and the second patch electrode 25 match the positions of the two lead ends 11 of the conical coil body 1. The two lead ends 11 are connected to the enameled leads 12 as conductive terminals of the electrodes to avoid increased resistance. Specifically, the enameled leads 12 can be made of polyurethane enameled copper wire, with an insulation layer of polyurethane resin. Its surface coating has direct solderability and good electro-inducing properties at high frequencies.

[0025] In some possible embodiments, to achieve a compact structure, the base plate 21, back plate 22, and top cover 3 are all C-shaped. To enhance the overall stability of the base and prevent tipping, both the base plate 21 and back plate 22 are asymmetrical structures. Specifically, the shape or size of the support areas on both sides of the base plate 21 and back plate 22 can be designed according to the center of gravity offset, so that the weight distribution of the base plate 21 and back plate 22 matches that of the conical column 23 and the electrode structure, ensuring that the overall center of gravity projection is located in the central area. Alternatively, this can be achieved by adjusting the thickness and weight of different areas of the base plate 21 and back plate 22.

[0026] Reference Figure 5 As shown, the projection of the base plate 21 on the horizontal plane is a non-right-angled parallelogram. The base plate 21 has a first patch electrode 24 and a second patch electrode 25 extending outward from the corresponding areas of its two obtuse angles. The first patch electrode 24 and the second patch electrode 25 are arranged in parallel. The end faces of the first patch electrode 24 and the second patch electrode 25 are flush with the areas corresponding to the two acute angles of the base plate 21.

[0027] Further reference Figure 4 As shown, the projection of the back plate 22 on the vertical plane is a non-right-angled parallelogram. The second patch electrode 25 is located on the side of the back plate 22 that is connected to the bottom plate 21 and has an obtuse angle. The end face of the second patch electrode 25 facing outward is flush with the area corresponding to the acute angle of the other end of the back plate 22.

[0028] In some possible embodiments, to further increase stability, a balancing block 26 is provided on the side of the base plate 21 opposite to the first patch electrode 24. The balancing block 26 and the second patch electrode 25 are located on the same side of the base plate 21, and the extension length of the balancing block 26 is the same as the extension length of the second patch electrode 25.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A surface-mount tapered coil, characterized in that, The device includes a conical coil body (1) and an insulating base (2). The conical coil body (1) is wound around the insulating base (2). The conical coil body (1) has two lead ends (11). The insulating base (2) is provided with a first patch electrode (24) and a second patch electrode (25) respectively connecting the two lead ends (11). The insulating base (2) is provided with a top cover (3) on one side of the conical coil body (1).

2. The patch-type tapered coil according to claim 1, characterized in that, The insulating base (2) includes a base plate (21), a back plate (22) is provided on one end of the base plate (21), a conical column (23) is provided on the inner side of the back plate (22), the axial direction of the conical column (23) is projected on the vertical plane with a spatial component perpendicular to the base plate (21), the conical coil body (1) is wound around the outer periphery of the conical column (23), the upper cover (3) is provided on the other end of the back plate (22) opposite to the base plate (21), and the conical column (23) is located between the upper cover (3) and the base plate (21).

3. A patch-type tapered coil according to claim 2, characterized in that, The first patch electrode (24) and the second patch electrode (25) are respectively disposed on opposite sides of the base plate (21), and the two lead ends (11) are respectively wound around the corresponding first patch electrode (24) and second patch electrode (25) by enameled lead wire.

4. A patch-type tapered coil according to claim 3, characterized in that, The bottom plate (21), back plate (22) and top cover (3) are arranged in a C-shape.

5. A patch-type tapered coil according to claim 2, characterized in that, The projection of the base plate (21) on the horizontal plane is a non-right-angled parallelogram. The base plate (21) has the first patch electrode (24) and the second patch electrode (25) extending outward from the corresponding areas of its two obtuse angles. The first patch electrode (24) and the second patch electrode (25) are arranged in parallel. The end faces of the first patch electrode (24) and the second patch electrode (25) are flush with the areas corresponding to the two acute angles of the base plate (21).

6. A patch-type tapered coil according to claim 2, characterized in that, The projection of the back plate (22) on the vertical plane is a non-right-angled parallelogram. The second patch electrode (25) is located on the side of the back plate (22) that is connected to the bottom plate (21) and has an obtuse angle. The end face of the second patch electrode (25) is flush with the area corresponding to the acute angle of the other end of the back plate (22).

7. A patch-type tapered coil according to claim 2, characterized in that, A balance block (26) is provided on the side of the base plate (21) opposite to the first patch electrode (24).

8. A patch-type tapered coil according to claim 1, characterized in that, The insulating base (2) is made of LCP plastic.

9. A patch-type tapered coil according to claim 1, characterized in that, The width of the top cover (3) is greater than the diameter of the large end of the conical coil body (1).

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