Single-folding type pole piece material belt

Abstract

The utility model relates to the field of inductance coil material belts, in particular to a single-folding type pole piece material belt which comprises a material belt body and conductive pole pieces. A plurality of conductive pole pieces are arranged, the plurality of conductive pole pieces are divided into two groups, the two groups of conductive pole pieces are distributed along the length direction of the material belt body, and one group of conductive pole pieces and the other group of conductive pole pieces are paired in pairs; the conductive pole piece is connected to the material belt body and comprises a connecting part, a welding part and a bending part; the connecting part is connected to the material belt body, one end of the welding part is connected to the connecting part, the bending part is connected to the other end of the welding part, and the welding part and the bending part are arranged in an L shape. The method has the effect of reducing pseudo soldering of the inductance coil.

Description

Technical Field

[0001] This application relates to the field of inductor coil strips, and in particular to a single-fold electrode strip. Background Technology

[0002] Molded inductors are high-performance inductors whose design and manufacturing process offer significant advantages in electronic devices, especially in applications requiring high current, small size, and stable performance. A typical molded inductor consists of a magnetic core, an inductor coil, and conductive plates. The inductor coil is located inside the magnetic core, while its two leads are located outside. Two conductive plates are provided, each soldered to one of the inductor coil's leads, facilitating electrical connection of the inductor to the electronic device via conductive plates.

[0003] In existing related technologies, conductive electrode sheets are generally set inside the material strip. When manufacturing inductors, the leads of the inductor coil need to be spot-welded to the conductive electrode sheets of the material strip, and then the conductive electrode sheets and the inductor coil are cut off from the material strip together.

[0004] Regarding the aforementioned technologies, the connection strength between the inductor coil pins and the conductive electrode is low, making the inductor coil prone to poor soldering. Summary of the Invention

[0005] To reduce the occurrence of poor soldering in inductor coils, this application provides a single-fold electrode strip.

[0006] The single-fold electrode strip provided in this application adopts the following technical solution:

[0007] A single-fold electrode strip includes a strip body and a conductive electrode sheet;

[0008] The conductive electrode sheet is provided in a plurality of ways, and the plurality of conductive electrode sheets are divided into two groups. Both groups of conductive electrode sheets are distributed along the length direction of the material strip body, and one group of conductive electrode sheets is paired with the other group of conductive electrode sheets.

[0009] The conductive electrode sheet is connected to the strip body, and the conductive electrode sheet includes a connecting part, a welding part, and a bending part;

[0010] The connecting part is connected to the strip body, one end of the welding part is connected to the connecting part, the bending part is connected to the other end of the welding part, and the welding part and the bending part are arranged in an "L" shape.

[0011] Optionally, the bent portions of the two paired conductive electrode sheets are arranged opposite each other.

[0012] Optionally, the bent portions of the two paired conductive electrode sheets are arranged facing each other.

[0013] Optionally, the ratio between the length L1 of the bent portion and the width L2 of the bent portion is 1.0-2.0.

[0014] Optionally, the projected area of ​​the bent portion is 4.0-11.0 mm². 2 .

[0015] Optionally, the material strip body has a plurality of positioning holes through it, and the plurality of positioning holes are distributed along the length direction of the material strip body.

[0016] Optionally, some of the positioning holes are located at the end of each connection portion away from the welding portion.

[0017] Optionally, the connecting part is integrally connected to the strip body, the welding part is integrally connected to the connecting part, and the bending part is integrally connected to the welding part.

[0018] Optionally, the bent portion is provided with a bending groove.

[0019] Optionally, the cross-section of the bending groove is arranged in a "V" shape.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. When soldering the inductor coil to the conductive electrode sheet of the strip, place the inductor coil lead at the bend, and then spot weld the lead and the bend using a soldering head. During spot welding, a molten pool will form between the bend and the lead. As the molten pool cools and solidifies, the tension and contraction will cause the bend to bend towards the lead, thus covering the lead and preventing it from detaching from the conductive electrode sheet, thereby reducing the occurrence of cold solder joints in the inductor coil.

[0022] In addition, it is also convenient to apply force to the bending part by using external jigs and other equipment, so that the bending part covers the pin, making it less likely for the self-conducting electrode plate to fall off, thereby reducing the occurrence of poor soldering of the inductor coil.

[0023] 2. It facilitates the bending of the bent part under the action of the molten pool, so that the bent part can more firmly cover the pin of the inductor coil. Attached Figure Description

[0024] Figure 1 This is an overall schematic diagram of the coil strip in Embodiment 1 of this application.

[0025] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0026] Figure 3 This is a schematic diagram of the composition of the conductive electrode sheet in Embodiment 1 of this application.

[0027] Figure 4This is a schematic diagram of the implementation of the coil strip in Embodiment 1 of this application.

[0028] Figure 5 This is an overall schematic diagram of the coil strip in Embodiment 2 of this application.

[0029] Figure 6 This is a schematic diagram of the conductive electrode sheet in Embodiment 3 of this application.

[0030] Figure 7 yes Figure 6 Enlarged diagram of part B.

[0031] Explanation of reference numerals in the attached drawings: 1. Material strip body; 101. Positioning hole; 2. Conductive electrode plate; 21. Connecting part; 22. Welding part; 23. Bending part; 231. Bending groove. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0033] Example 1:

[0034] Embodiment 1 of this application discloses a single-fold electrode strip. (Refer to...) Figure 1 The single-fold electrode strip includes a strip body 1 and a conductive electrode sheet 2.

[0035] Reference Figure 1 and Figure 2 The strip body 1 has a plurality of positioning holes 101 through it. The positioning holes 101 are all circular and are distributed along the length of the strip body 1. The positioning holes 101 are located at the ends of each connecting part 21 away from the welding part 22, so that when the strip is cut, the strip body 1 can be held in place by passing through the positioning holes 101 to prevent it from shaking.

[0036] A plurality of conductive electrode plates 2 are provided, which are divided into two groups. Both groups of conductive electrode plates 2 are distributed along the length direction of the strip body 1, and both groups of conductive electrode plates 2 are connected to the strip body 1. One group of conductive electrode plates 2 is paired with the other group of conductive electrode plates 2, and the paired conductive electrode plates 2 are distributed along the width direction of the strip body 1. The two conductive electrode plates 2 are arranged close to each other along the length direction of the strip body 1, and the paired conductive electrode plates 2 are respectively used to connect the two pins of the inductor coil.

[0037] Reference Figure 2The conductive electrode sheet 2 is arranged in a "J" shape. The conductive electrode sheet 2 includes a connecting portion 21, a welding portion 22, and a bending portion 23. One end of the connecting portion 21 is integrally connected to the strip body 1, one end of the welding portion 22 is integrally connected to the other end of the connecting portion 21, and the bending portion 23 is integrally connected to the other end of the welding portion 22. The welding portion 22 and the bending portion 23 are arranged in an "L" shape. The bending portion 23 faces the connecting portion 21, and the bending portions 23 of the two paired conductive electrode sheets 2 are arranged opposite to each other.

[0038] Reference Figure 3 The ratio between the length L1 and the width L2 of the bent portion 23 is 1.0-2.0, and the projected area of ​​the bent portion 23 is 4.0-11.0 mm². 2 Specifically, in Embodiment 1 of this application, the bent portion 23 is rectangular, with a length L1 of 2.7 ± 0.2 mm, a width L2 of 2.0 ± 0.2 mm, and a projected area of ​​4.50-6.38 mm². 2 .

[0039] The implementation principle of a single-fold electrode strip in Embodiment 1 of this application is as follows: (Refer to...) Figure 4 When soldering the inductor coil to the conductive electrode 2 of the strip, the inductor coil is placed between two paired conductive electrode 2, and the two leads are placed on the two bends 23 respectively. The thermal stress or mechanical force generated during soldering causes the bends 23 to cover the leads, making it difficult for the leads to fall off the conductive electrode 2, thereby reducing the occurrence of poor soldering of the inductor coil.

[0040] Example 2:

[0041] Embodiment 2 of this application discloses a single-fold electrode strip, referring to... Figure 5 The main difference from Example 1 is that the bent portion 23 of the conductive electrode sheet 2 is oriented differently.

[0042] Specifically, in Embodiment 2 of this application, the conductive electrode sheet 2 is arranged in a "Z" shape, and the bent portion 23 is arranged away from the connecting portion 21, and the bent portions 23 of the two paired conductive electrode sheets 2 are arranged facing each other.

[0043] Example 3:

[0044] Embodiment 3 of this application discloses a single-fold electrode strip, which, in addition to all the technical features of Embodiment 1, also includes the following technical features:

[0045] Reference Figure 6 and Figure 7The bending part 23 has a bending groove 231 with a "V" shaped cross section. The bending groove 231 is located close to the welding part 22 so that the bending part 23 can be bent through the bending groove 231, thereby making the bending part 23 more securely cover the pin of the inductor coil during spot welding.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A single-fold pole piece web, characterized by: The strip body (1) and the conductive sheet (2) are included. The conductive sheet (2) is provided with a plurality of conductive sheets (2), and the plurality of conductive sheets (2) are divided into two groups. The conductive sheet (2) is connected to the strip body (1), and the conductive sheet (2) includes a connecting portion (21), a welding portion (22) and a bending portion (23). The connecting portion (21) is connected to the strip body (1), one end of the welding portion (22) is connected to the connecting portion (21), the bending portion (23) is connected to the other end of the welding portion (22), and the welding portion (22) and the bending portion (23) are arranged in an "L" shape.

2. The single-fold pole piece web of claim 1, wherein: The bending portions (23) of the two conductive sheets (2) are arranged away from each other.

3. The single-fold pole piece web of claim 1, wherein: The bending portions (23) of the two conductive sheets (2) are arranged towards each other.

4. The single-fold pole piece web of claim 1, wherein: The ratio between the length L1 of the bending portion (23) and the width L2 of the bending portion (23) is 1.0-2.

0.

5. The single-fold pole piece web of claim 4, wherein: The normal projection area of the bending part (23) is 4.0-11.0 mm 2 .

6. The single-fold pole piece web of claim 1, wherein: The strip body (1) is provided with a plurality of positioning holes (101), and the plurality of positioning holes (101) are distributed along the length direction of the strip body (1).

7. The single-fold pole piece web of claim 6, wherein: The plurality of positioning holes (101) are respectively located at one end of each connecting portion (21) away from the welding portion (22).

8. The single-fold pole piece web of claim 1, wherein: The connecting portion (21) is integrally connected to the strip body (1), the welding portion (22) is integrally connected to the connecting portion (21), and the bending portion (23) is integrally connected to the welding portion (22).

9. The single-fold pole piece web of claim 1, wherein: The bending portion (23) is provided with a bending groove (231).

10. The single-fold pole piece web of claim 9, wherein: The cross section of the bending groove (231) is arranged in a "V" shape.

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