Flat wire inductor pin structure adaptable to circular bonding pad hole

Abstract

The utility model relates to the technical field of electric appliances, in particular to a flat wire inductor pin structure capable of being matched with a circular bonding pad hole. The inductor comprises an inductor body, the inductor body comprises a base and a winding wound on an iron core above the base, and the winding is formed by vertically winding a flat wire with a rectangular cross section; a plurality of through holes are formed in the base; a flat wire of the winding extends downwards from the through hole and is extruded and narrowed inwards from the two sides of the flat wire to form a pin; the width of the tail end of the pin is used for being matched with the aperture of the circular bonding pad hole. According to the flat wire inductor, the compatibility limitation of a traditional flat wire inductor is broken through by adjusting the shapes of the pins, the application universality of the flat wire inductor on different circuit boards is improved, the plasticity of materials is fully utilized, the shapes of the pins are changed through a simple extrusion process, the manufacturing cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, and particularly relates to a flat wire inductor pin structure adaptable to circular pad holes. Background Art

[0002] In existing flat wire inductor products, due to the use of flat enameled wires, the holes on the circuit board pads also need to be designed in a corresponding flat shape to match them. For example, the patent with the Chinese patent publication number CN112216488A discloses a flat wire pin inductor. The design of this inductor enables the head and tail ends of each flat wire coil to pass through corresponding wire grooves, serving as the direct-out pins of the flat wire pin inductor, and the part of the flat wire coil passing through the wire groove can be clamped at the lower end of the wire groove. However, such a design limits the universality of the circuit board holes, making them only suitable for the insertion of flat wire inductors and unable to be compatible with traditional circular inductors. There is still a lack of a flat wire inductor pin structure adaptable to circular pad holes. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a flat wire inductor pin structure adaptable to circular pad holes.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A flat wire inductor pin structure adaptable to circular pad holes includes an inductor body. The inductor body includes a base and a winding wound around an iron core above the base. The winding is formed by vertically winding flat wires with a rectangular cross-section; a plurality of through holes are opened on the base; the flat wires of the winding extend downward from the through holes and are squeezed and narrowed inward from both sides of the flat wires to form pins; the width of the end of the pins is used to adapt to the aperture of the circular pad holes.

[0006] This technical solution breaks the compatibility limitations of traditional flat wire inductors by adjusting the pin shape, improves its application universality on different circuit boards, makes full use of the plasticity of the material, realizes the change of the pin shape through a simple extrusion process, reduces the manufacturing cost, and improves the production efficiency. Specifically, through the extrusion process treatment of the pins, the wide sides are moderately compressed and the narrow sides are moderately expanded, so as to adjust the cross-sectional shape of the pins to approach a square; the change of the pin shape makes it easier to insert into the circular pad holes, improving the convenience and firmness of welding; the square pin shape can better fill the space when inserted into the pad holes, reducing the risk of virtual soldering and desoldering.

[0007] In addition, the flat wire inductor pin structure adaptable to circular pad holes proposed above according to the utility model may also have the following additional technical features:

[0008] According to an embodiment of the present invention, the longitudinal section of the pin has a structure that is wider at the top and narrower at the bottom, and the two sides thereof have a transition structure with arc surfaces.

[0009] In this technical solution, the longitudinal section of the pin makes it easier to insert the pin into the circular pad hole while maintaining the structural strength; the arc transition reduces the stress concentration during pin insertion and prevents the pin from breaking.

[0010] According to an embodiment of the present invention, the cross-section of the pin approaches a square structure, wherein the wide side of the flat wire narrows inward, while the narrow side of the flat wire expands outward.

[0011] In this technical solution, the cross-section of the pin enables the pin to better fill the space when inserted into the pad hole, improving the firmness of welding; the narrowing of the wide side and the expansion of the narrow side help to maintain the overall shape stability of the pin during the extrusion process.

[0012] According to an embodiment of the present invention, the inward extrusion external force of the pin comes from an auxiliary tooling, and the auxiliary tooling applies the same external force to each pin respectively, so that the degree of deformation is the same.

[0013] In this technical solution, using the auxiliary tooling can ensure that each pin receives the same external force, thereby ensuring the consistency of the pin shape and size, improving the production efficiency, and reducing the error of manual operation.

[0014] According to an embodiment of the present invention, the through hole of the base is rectangular, and the flat wire after forming the pin will be limited under the base to prevent the pin from detaching from the base.

[0015] In this technical solution, the rectangular through hole helps to fix the position of the pin and prevent it from moving during welding or use. The limiting structure ensures a firm connection between the pin and the base, improving the overall stability of the inductor.

[0016] According to an embodiment of the present invention, a partition is further provided on the base, and the partition is placed between the windings of the iron core.

[0017] In this technical solution, the partition is used to isolate different winding layers to prevent short circuits between them. The partition can also help to fix the winding position and improve the mechanical stability of the inductor.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By adjusting the pin shape, the compatibility limitation of the traditional flat wire inductor is broken, the application versatility on different circuit boards is improved, the plasticity of the material is fully utilized, the pin shape is changed through a simple extrusion process, the manufacturing cost is reduced, and the production efficiency is improved. Description of the Drawings

[0020] Figure 1 It is a structural schematic diagram of the present utility model.

[0021] In the figure: 1. winding; 2. pin; 3. base. Specific embodiments

[0022] 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 part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] As Figure 1 shown, this embodiment provides a flat wire inductor pin structure adaptable to circular pad holes, including an inductor body. The inductor body includes a base 3 and a winding 1 wound around the iron core above the base 3. The winding 1 is formed by vertically winding a flat wire with a rectangular cross-section; a plurality of through holes are provided on the base 3; the flat wire of the winding 1 extends downward from the through holes and is squeezed and narrowed inward from both sides of the flat wire to form a pin 2; the width of the end of the pin 2 is used to adapt to the aperture of the circular pad hole.

[0025] Through the adjustment of the shape of the pin 2 in this technical solution, the compatibility limitation of the traditional flat wire inductor is broken, the application versatility on different circuit boards is improved, the plasticity of the material is fully utilized, and the shape change of the pin 2 is realized through a simple extrusion process, reducing the manufacturing cost and improving the production efficiency. Specifically, through the extrusion process treatment of the pin 2, its wide side is moderately compressed and its narrow side is moderately expanded, so as to adjust the cross-sectional shape of the pin 2 to approach a square; the change of the shape of the pin 2 makes it easier to insert into the circular pad hole, improving the convenience and firmness of welding; the square shape of the pin 2 can better fill the space when inserted into the pad hole, reducing the risk of virtual soldering and desoldering.

[0026] In addition, according to the above-mentioned flat wire inductor pin structure adaptable to circular pad holes proposed by the present utility model, it may also have the following additional technical features:

[0027] According to an embodiment of the present utility model, the longitudinal section of the pin 2 has a structure that is wider at the top and narrower at the bottom, and its two sides have a transition structure with an arc surface.

[0028] In this technical solution, the longitudinal section of the pin 2 makes it easier for the pin 2 to insert into the circular pad hole while maintaining the structural strength; the arc surface transition reduces the stress concentration when the pin 2 is inserted, preventing the pin 2 from breaking.

[0029] According to an embodiment of the present utility model, the cross-section of the pin 2 approaches a square structure, wherein the wide side of the flat wire narrows inward, while the narrow side of the flat wire expands outward.

[0030] In this technical solution, the cross-section of the pin 2 enables the pin 2 to better fill the space when inserted into the pad hole, improving the firmness of soldering; the narrowing of the wide side and the expansion of the narrow side help to maintain the overall shape stability of the pin 2 during the extrusion process.

[0031] According to an embodiment of the present utility model, the external force for inward extrusion of the pin 2 comes from an auxiliary tooling, and the auxiliary tooling applies the same external force to each pin 2, so that the degree of deformation is the same.

[0032] In this technical solution, using the auxiliary tooling can ensure that each pin 2 receives the same external force, thereby ensuring the consistency of the shape and size of the pin 2, improving the production efficiency, and reducing the error of manual operation.

[0033] According to an embodiment of the present utility model, the through hole of the base 3 is rectangular, and the flat wire after forming the pin 2 will be limited below the base 3 to prevent the pin 2 from detaching from the base 3.

[0034] In this technical solution, the rectangular through hole helps to fix the position of the pin 2 and prevent it from moving during soldering or use. The limiting structure ensures the firm connection between the pin 2 and the base 3 and improves the overall stability of the inductor.

[0035] According to an embodiment of the present utility model, a partition is further provided on the base 3, and the partition is placed between the windings 1 of the upper iron core.

[0036] In this technical solution, the partition is used to isolate different winding 1 layers to prevent short circuits between them. The partition can also help to fix the position of the winding 1 and improve the mechanical stability of the inductor.

[0037] The usage process of the above embodiment is as follows:

[0038] First, the winding 1 is wound vertically around the iron core above the base 3 with a flat wire having a rectangular cross-section to form an inductor body. Then, the flat wire extends downward through the through-hole on the base 3 and is processed by an extrusion process to narrow the two sides of the flat wire inward to form the pin 2. The end width of the pin 2 is designed to match the aperture of the circular pad hole. Since the longitudinal cross-section of the pin 2 has a structure that is wider at the top and narrower at the bottom, and the two sides are in an arc transition, this makes it easier for the pin 2 to be inserted into the circular pad hole and reduces the stress concentration during insertion. At the same time, the cross-section of the pin 2 approaches a square structure, which can better fill the space of the pad hole and improve the firmness of welding. An auxiliary tooling is used to ensure that each pin 2 receives the same external force to ensure the consistency of the shape and size of the pin 2. The rectangular through-hole and the limiting structure prevent the pin 2 from moving during welding or use.

[0039] Although the present utility model has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present utility model is not limited thereto. Without departing from the spirit and essence of the present utility model, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present utility model, and all such modifications or substitutions should be within the scope of the present utility model. / Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present utility model, and all should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A flat wire inductor pin structure adaptable to circular pad holes, comprising an inductor body, the inductor body including a base (3) and a winding (1) wound around an iron core above the base (3), characterized in that, The winding (1) is formed by vertically winding flat wires with a rectangular cross-section; several through holes are provided in the base (3); the flat wires of the winding (1) extend downward from the through holes and are squeezed and narrowed inward from both sides of the flat wires to form the pins (2); the width of the end of the pin (2) is used to match the aperture of the circular pad hole.

2. The flat wire inductor pin structure adaptable to a circular pad hole according to claim 1, wherein The longitudinal section of the pin (2) has a structure that is wider at the top and narrower at the bottom, and its two sides have a transition structure with an arc surface.

3. The flat wire inductor pin structure with an adaptable circular pad hole as described in claim 1 or 2, characterized in that, The cross-section of the pin (2) approaches a square structure, wherein the wide side of the flat wire is narrowed inward, while the narrow side of the flat wire is expanded outward.

4. The flat wire inductor pin structure adaptable to circular pad holes as described in claim 1, characterized in that, The external force for squeezing the pin (2) inward comes from an auxiliary tooling, and the auxiliary tooling applies the same external force to each pin (2) respectively, so that the degree of deformation is the same.

5. The flat wire inductor pin structure adaptable to a circular pad hole as described in claim 3, characterized in that, The through hole of the base (3) is rectangular, and the flat wire after forming the pin (2) will be limited below the base (3) to prevent the pin (2) from detaching from the base (3).

6. The flat wire inductor pin structure adaptable to a circular pad hole according to claim 1, characterized in that A partition is further provided on the base (3), and the partition is placed between the windings (1) of the iron core.

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