TLVR double-conductor inductor

Abstract

The utility model relates to a TLVR double-conductor inductor, which belongs to the technical field of inductors, and comprises a magnet, a first conductor and a second conductor, the welding surface of the TLVR double-conductor inductor is flush with the surface height of the magnet, a metalized layer is attached to the welding surface, and the metalized layer extends to the edges of the two sides of the magnet. The metallization layers of the solder surfaces of the first conductor and the second conductor are spaced apart in an insulated manner. The problems that the welding face of an existing TLVR double-conductor inductor is not flat, and the welding condition cannot be visually judged are solved, the welding face is smooth, the welding condition can be visually checked easily, and therefore the problem of insufficient welding is effectively avoided, and the detection difficulty and the defective product outflow proportion are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, and particularly relates to a TLVR double-conductor inductor. Background Art

[0002] As Figure 1 and Figure 2 shown, the structure of the existing TLVR (Trans-inductor Voltage Regulator) double-conductor inductor is composed of two magnetic cores and two n-type conductors on the device, which are combined to form a vertical structure inductor with four terminals at the bottom. The welding surface of the conductor after the inductor is assembled is uneven, and it is not flat when pasted onto the PCB board, which is likely to cause false soldering. Moreover, the position of the secondary winding conductor is in the middle of the body, and the welding condition after it is mounted on the upper plate cannot be visually judged directly. Therefore, the detection difficulty is increased and the ratio of defective products flowing out is improved. Content of the Utility Model

[0003] Based on this, the present application provides a TLVR double-conductor inductor, aiming to solve the problems of uneven welding surface and inability to visually judge the welding condition of the TLVR double-conductor inductor in the prior art.

[0004] A TLVR double-conductor inductor includes:

[0005] A magnet,

[0006] A first conductor,

[0007] A second conductor, the first conductor and the second conductor wind around the magnet, the first conductor and the second conductor have welding surfaces, and the welding surfaces are located on the same side of the magnet;

[0008] The welding surfaces are flush with the surface of the magnet in height, the welding surfaces are attached with metallization layers, the metallization layers extend to both side edges of the magnet, and the metallization layers of the welding surfaces of the first conductor and the second conductor are insulated and spaced apart.

[0009] Advantages of the Utility Model

[0010] The present application provides a TLVR double-conductor inductor. The welding surfaces are flush with the surface of the magnet in height, which improves the flatness of the welding surfaces and effectively avoids the problem of false soldering; the metallization layers attached to the welding surfaces extend to both side edges of the magnet, and the metallization layers of the welding surfaces of the first conductor and the second conductor are insulated and spaced apart, providing a larger contact area for welding, so that the welding condition is easy to visually inspect, reducing the detection difficulty and the ratio of defective products flowing out. Description of the Drawings

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0012] Figure 1 Schematic diagram of the partial welding surface of the existing TLVR two-conductor inductor;

[0013] Figure 2 Schematic diagram of the structure of the existing TLVR two-conductor inductor;

[0014] Figure 3 Schematic diagram of the first magnet structure of the TLVR two-conductor inductor of the present invention;

[0015] Figure 4 Schematic diagram of the second magnet structure of the TLVR two-conductor inductor of the present invention;

[0016] Figure 5 Schematic diagram of the first conductor structure of the TLVR two-conductor inductor of the present invention;

[0017] Figure 6 Schematic diagram of the second conductor structure of the TLVR two-conductor inductor of the present invention;

[0018] Figure 7 Schematic diagram of the assembly structure of the TLVR two-conductor inductor of the present invention;

[0019] In the figure: 100, magnet; 110, first magnet; 111, first groove; 120, second magnet; 121, second groove; 122, third groove; 200, first conductor; 210, first conductor main body; 220, first welding terminal; 230, second welding terminal; 300, welding surface; 400, second conductor; 410, second conductor main body; 420, first terminal; 430, second terminal; 440, third welding terminal; 450, fourth welding terminal; 500, metallization layer.

[0020] The realization of the object, functional features and advantages of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, "and / or" throughout the text includes three scenarios. Taking A and / or B as an example, it includes the technical solution of A, the technical solution of B, and the technical solution that both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0024] Such as Figures 3 - 7As shown in the figure, an embodiment of the present application provides a TLVR dual-conductor inductor, which includes a magnet 100, a first conductor 200, and a second conductor 400. The first conductor 200 and the second conductor 400 are wound around the magnet 100. The first conductor 200 and the second conductor 400 have welding surfaces 300, and the welding surfaces 300 are located on the same side of the magnet 100; the welding surfaces 300 are flush with the surface of the magnet 100 in height. The welding surfaces 300 are attached with a metallization layer 500, and the metallization layer 500 extends to the two side edges of the magnet 100. The metallization layers 500 of the welding surfaces 300 of the first conductor 200 and the second conductor 400 are insulated and spaced apart. The metallization layer 500 is consistent with the width of the welding surface 300. The insulating spacer lines or surfaces of the metallization layer 500 extend along the gap between the first conductor 200 and the second conductor 400 to the two side edges of the magnet 100. The first conductor 200 and the second conductor 400 are respectively electrically connected to the metallization layer 500 that is insulated and spaced apart. For the TLVR dual-conductor inductor provided by the present application, the welding surface 300 is flush with the surface of the magnet 100 in height, which improves the flatness of the welding surface 300 and effectively avoids the problem of false soldering; the metallization layer 500 attached to the welding surface 300 extends to the two side edges of the magnet 100, and the metallization layers 500 of the welding surfaces 300 of the first conductor 200 and the second conductor 400 are insulated and spaced apart, providing a larger contact area for welding, thus facilitating visual inspection of the welding condition, reducing the detection difficulty and the outflow ratio of defective products.

[0025] In this embodiment, the metallization layer 500 is formed by electroplating or PVD process. The metallization layer 500 is a stack of Cu, Ni, and Sn in sequence, or a stack of Ni, Cu, and Sn in sequence. In another embodiment, the metallization layer 500 is formed by electroplating or PVD process. The metallization layer 500 is a stack of Cr, Ni, and Ag in sequence, or a stack of Ni and Sn in sequence. The metallization layer 500 not only provides a larger contact area for welding, thus facilitating visual inspection of the welding condition, reducing the detection difficulty and the outflow ratio of defective products, but also improves the mechanical strength, conductivity, and corrosion resistance of the inductor.

[0026] In this embodiment, there is an insulator between the first conductor 200 and the second conductor 400; the insulator is an insulating coating applied to the inner side surface of the first conductor 200. In another embodiment, the insulator is an insulating coating applied to the outer side surface of the second conductor 400, or a plastic film is provided between the first conductor 200 and the second conductor 400. The insulation spacing between the first conductor 200 and the second conductor 400 ensures the electrical isolation between the first conductor 200 and the second conductor 400, effectively avoiding the risk of short circuit.

[0027] In this embodiment, the outer surface of the inductor has an insulating layer, which covers all surfaces except the metallization layer 500 and is formed by a painting process. This insulating layer insulates the outer surface of the inductor except the metallization layer 500 to ensure that current only flows to the area formed by the metallization layer 500 during electroplating or PVD processes.

[0028] In this embodiment, the magnet includes a first magnet 110 and a second magnet 120. The first magnet 110 and the second magnet 120 are square. A first groove 111 is formed on one surface of the first magnet 110, and the surface of the first magnet 110 with the first groove 111 is attached to the second magnet 120. A second groove 121 is formed on one surface of the second magnet 120, and the first magnet 110 is attached to the back surface of the second magnet 120 on the side with the second groove 121. The first conductor 200 and the second conductor 400 pass through the first groove 111 and partially wind around the second magnet 120. The two ends of the second conductor 400 are embedded in the second groove 121. Third grooves 122 are formed on the end surfaces of the second magnet 120 at both ends of the second groove 121. The third grooves 122 penetrate the entire end surface and communicate with the second groove 121, and part of the first conductor 200 and part of the second conductor 400 are embedded in the third grooves 122.

[0029] In this embodiment, the first groove 111 is parallel to the side of the first magnet 110, the second groove 121 is parallel to the side of the second magnet 120, and the third groove 122 is perpendicular to the side of the second magnet 120. After the first magnet 110 and the second magnet 120 are attached, the directions of the first groove 111 and the second groove 121 are the same, and the third groove 122 connects the first groove 111 and the second groove 121.

[0030] In this embodiment, the welding surface 300 is flush with the surfaces of the first magnet 110 and the second magnet 120. Specifically, the welding surface 300 levels the surfaces of the first conductor 200 and the second conductor 400 through CNC machining. In another alternative embodiment, the welding surface 300 levels the surfaces of the first conductor 200 and the second conductor 400 through laser machining. The welding surface 300 is at the same height as the surface of the magnet 100, ensuring the flatness of the welding surface 300 and improving the welding quality.

[0031] In this embodiment, the first conductor 200 is an overall concave shape formed by bending a rectangular sheet. The first conductor 200 includes a first conductor main body 210, a first welding terminal 220 and a second welding terminal 230 located at both ends of the first conductor main body 210. The first welding terminal 220 and the second welding terminal 230 are perpendicular to the first conductor main body 210 in the same direction, and the end surfaces of the first welding terminal 220 and the second welding terminal 230 are the welding surface 300.

[0032] The orientations of the first welding terminal 220 and the second welding terminal 230 are the same.

[0033] The second conductor 400 is an unclosed rectangular shape formed by bending a rectangular sheet. The second conductor 400 includes a second conductor main body 410, a first terminal 420, a second terminal 430, a third welding terminal 440, and a fourth welding terminal 450. The third welding terminal 440 and the fourth welding terminal 450 are parallel to the second conductor main body 410. The first terminal 420 is located between the third welding terminal 440 and the second conductor main body 410. The second terminal 430 is located between the fourth welding terminal 450 and the second conductor main body 410. There is an opening between the third welding terminal 440 and the fourth welding terminal 450. The surfaces of the third welding terminal 440 and the fourth welding terminal 450 away from the second conductor main body 410 have welding surfaces 300. During assembly, the first conductor 200 is laminated around the second conductor 400, and the laminated section of the first conductor 200 and the second conductor 400 remains parallel.

[0034] The TLVR dual-conductor inductor of the present utility model is obtained through the following steps:

[0035] S1. Prepare the first magnet 110, the second magnet 120, the first conductor 200, and the second conductor 400, and select the first conductor 200 or the second conductor 400 to be coated with an insulating coating.

[0036] S2. Bend and form the first conductor 200 and the second conductor 400 and wind them around the second magnet 120.

[0037] S3. The surface of the first magnet 110 with the first groove 111 is attached to the back surface of the surface of the second magnet 120 with the second groove 121.

[0038] S4. Spray paint on the surface of the entire inductor processed in step S3 to form an insulating layer on the surface of the inductor.

[0039] S5. Use CNC or laser to strip the paint on the surface of the welding surfaces 300 of the first conductor 200 and the second conductor 400. The paint stripping extends from the surface of the welding surfaces 300 to the two side edges of the second magnet 120 to remove the surface insulating layer, obtaining the surface treatment substrate surface of the metallization layer 500. And during the paint stripping, it is necessary to keep the surfaces of the welding surfaces 300 and the magnet 100 at the same height to ensure the flatness of the inductor after subsequent metallization treatment.

[0040] S6. Electroplate or perform PVD treatment on the inductor after the treatment in step S5 to form a metallization layer 500 on the surface treatment substrate surface where the surface insulation layer is removed. The metallization layer 500 extends from the welding surface 300 to the two side edges of the first magnet 110, and the metallization layers 500 on the welding surfaces 300 of the first conductor 200 and the second conductor 400 are insulated and spaced apart.

[0041] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A TLVR two-conductor inductor, comprising: a magnet, a first conductor, a second conductor, wherein the first conductor and the second conductor wind around the magnet, and the first conductor and the second conductor have welding surfaces, and the welding surfaces are located on the same side of the magnet; characterized in that the welding surfaces are flush with the surface of the magnet in height, the welding surfaces are attached with metallization layers, the metallization layers extend to both side edges of the magnet, and the metallization layers of the welding surfaces of the first conductor and the second conductor are insulated and spaced apart.

2. The inductor according to claim 1, characterized in that, The first conductor and the second conductor are respectively electrically connected to the insulated and spaced-apart metallization layers.

3. The inductor according to claim 1, wherein, The metallization layer is formed by electroplating or PVD process.

4. The inductor according to claim 3, characterized in that, The metallization layer is a stack of Cu, Ni, Sn in sequence, or a stack of Ni, Cu, Sn in sequence.

5. The inductor according to claim 1, characterized in that, The outer surface of the inductor has an insulating layer, and the insulating layer covers all surfaces except the metallization layer.

6. The inductor according to claim 1, wherein The magnet includes a first magnet and a second magnet, the first magnet and the second magnet are square, a first groove is formed on one surface of the first magnet, the surface of the first magnet with the first groove is attached to the second magnet, and the first conductor and the second conductor pass through the first groove and partially wind around the second magnet.

7. The inductor according to claim 6, wherein A second groove is formed on one surface of the second magnet, the first magnet is attached to the back surface of the surface of the second magnet with the second groove, and both ends of the second conductor are embedded in the second groove.

8. The inductor according to claim 7, wherein Third grooves are formed on the end faces of the second magnet at both ends of the second groove, the third grooves penetrate the entire end face and communicate with the second groove, and part of the first conductor and part of the second conductor are embedded in the third grooves.

9. The inductor according to claim 2, wherein The first conductor is integrally formed by bending a rectangular sheet into a concave shape, the first conductor includes a first conductor main body, a first welding terminal and a second welding terminal located at both ends of the first conductor main body, the first welding terminal and the second welding terminal are perpendicular to the first conductor main body in the same direction, and the end faces of the first welding terminal and the second welding terminal are welding surfaces.

10. The inductor according to claim 2, characterized in that, The second conductor is an unclosed rectangular shape formed by bending a rectangular sheet, the second conductor includes a second conductor main body, a first terminal, a second terminal, a third welding terminal and a fourth welding terminal, the third welding terminal and the fourth welding terminal are parallel to the second conductor main body, the first terminal is located between the third welding terminal and the second conductor main body, the second terminal is located between the fourth welding terminal and the second conductor main body, there is an opening between the third welding terminal and the fourth welding terminal, and the surfaces of the third welding terminal and the fourth welding terminal away from the second conductor main body are welding surfaces.

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