Inductance device

Abstract

The utility model belongs to the technical field of electronic components, and discloses an inductance device. The inductance device comprises a magnetic core and a winding, the winding is partially contained in the magnetic core, the two ends of the winding extend out of the magnetic core to form two pins, at least one pin comprises a connecting part and an extending part which are connected, the connecting part comprises a first connecting part and a second connecting part, the first connecting part is connected with a circuit board in a welded mode, and the second connecting part is connected with the circuit board in a welded mode. And the second connecting part is glued with the circuit board. The first connecting part on the pin is connected with the circuit board through the solder, and the second connecting part on the pin is connected with the circuit board through the glue, so that the connection between the pin and the circuit board is firm and reliable, the reliability of the product is improved, the requirement of electrical connection can be met, and an additional mechanical fixing effect can be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to an inductor component. Background Art

[0002] Inductors are various electronic components soldered on circuit boards. Together, they realize various functions of electronic equipment. Circuit boards soldered with inductors play a vital role in electronic equipment, with multiple functions such as connection, transmission, control and stability. It is an important basis for the normal operation of electronic equipment.

[0003] Inductors are often soldered to circuit boards through pins, and currently this is mainly done by reflow soldering. However, the connection strength and vibration resistance of inductors connected to circuit boards by this soldering method are weak, resulting in reduced product reliability.

[0004] Therefore, it is necessary to provide an inductor device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an inductor device, which improves the connection strength between the pins of the inductor device and the circuit board, thereby improving the reliability of the product.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An inductor device, comprising:

[0008] A magnetic core and a winding, wherein the winding is partially accommodated in the magnetic core, and both ends of the winding extend to the outside of the magnetic core to form two pins, at least one of the pins includes a connected connecting portion and an extending portion, and the connecting portion includes a first connecting portion and a second connecting portion, the first connecting portion is welded to a circuit board, and the second connecting portion is glued to the circuit board.

[0009] Preferably, the end surface of the first connecting portion is higher than the end surface of the second connecting portion.

[0010] Preferably, the first connecting portion and the second connecting portion are arranged in sequence, and a step is formed therebetween.

[0011] Preferably, an inclined portion is provided on a side of the first connecting portion away from the second connecting portion.

[0012] Preferably, at least one side wall of the extending portion extends in a direction toward the connecting portion and away from another side wall of the extending portion.

[0013] Preferably, two ends of the winding extend from two opposite side walls of the magnetic core to form two pins.

[0014] Preferably, the number of the windings is plural.

[0015] Preferably, one pin of each winding comprises a connecting portion, and the connecting portions of two adjacent windings are distributed diagonally.

[0016] Preferably, the magnetic core is formed by pressing magnetic powder and then assembled with the winding to form the inductor.

[0017] Preferably, the inductor device is formed by integrally pressing the magnetic powder and the winding into a mold cavity.

[0018] Beneficial effects:

[0019] This inductor device includes a magnetic core and a winding, the winding part is accommodated in the magnetic core, and the two ends of the winding extend to the outside of the magnetic core to form two pins, at least one pin includes a connected connection part and an extension part, the connection part includes a first connection part and a second connection part, the first connection part is welded to the circuit board, and the second connection part is glued to the circuit board. When the inductor device is fixed to the circuit board, the first connection part on the pin is connected to the circuit board through solder, and the second connection part on the pin is connected to the circuit board through glue. Welding ensures a firm connection between the pin and the circuit board. Welding forms a stable electrical connection by melting the solder and permanently combining the pin and the corresponding part of the circuit board, which can ensure the stable transmission of current and signals. The glued part provides additional fixing and supporting effects. The glue can tightly bond the pin to the circuit board to increase the stability of the connection. Gluing is particularly important for application scenarios that need to withstand vibration or impact. It can reduce the risk of pins falling off or loosening. The pins in this embodiment are connected to the circuit board by welding and gluing, so that the connection between the pins and the circuit board is both firm and reliable, which improves the reliability of the product, can meet the needs of electrical connection, and can provide additional mechanical fixing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the inductor device provided by the utility model;

[0021] Figure 2 It is a cross-sectional view of the inductor device provided by the utility model.

[0022] In the figure:

[0023] 1. Magnetic core;

[0024] 2. Winding; 21. Pin; 211. Connecting portion; 2111. First connecting portion; 2112. Second connecting portion; 212. Extending portion; 213. Inclined portion. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0030] Inductors are various electronic components soldered on circuit boards. Together, they realize various functions of electronic devices. Circuit boards soldered with inductors play a vital role in electronic devices. They have multiple functions such as connection, transmission, control and stability. They are an important basis for the normal operation of electronic devices. Inductors are often soldered to circuit boards through pins, and currently they are mainly soldered by reflow soldering. However, the connection strength and vibration resistance of inductors connected to circuit boards by this soldering method are weak, resulting in reduced product reliability.

[0031] To solve the above problems, see Figure 1 , Figure 2 , this embodiment provides an inductor device. This inductor device includes a magnetic core 1 and a winding 2, the winding 2 is partially accommodated in the magnetic core 1, and the two ends of the winding 2 extend to the outside of the magnetic core 1 to form two pins 21, at least one pin 21 includes a connected connection portion 211 and an extension portion 212, the connection portion 211 includes a first connection portion 2111 and a second connection portion 2112, the first connection portion 2111 is welded to the circuit board, and the second connection portion 2112 is glued to the circuit board. When the inductor device is fixed to the circuit board, the first connection portion 2111 on the pin 21 is connected to the circuit board through solder, and the second connection portion 2112 on the pin 21 is connected to the circuit board through glue. Welding ensures a firm connection between the pin 21 and the circuit board. Welding forms a stable electrical connection by melting the solder and permanently combining the pin 21 with the corresponding part of the circuit board, which can ensure the stable transmission of current and signals. The glued part provides additional fixing and supporting effects. The glue can tightly bond the pin 21 to the circuit board to increase the stability of the connection. Gluing is particularly important for application scenarios that need to withstand vibration or impact. It can reduce the risk of the pin 21 falling off or loosening. The pin 21 in this embodiment is connected to the circuit board by welding and gluing, so that the connection between the pin 21 and the circuit board is both firm and reliable, which improves the reliability of the product, can meet the needs of electrical connection, and can provide additional mechanical fixing effect.

[0032] It should be noted that the end face of the first connection part 2111 cannot be lower than the end face of the second connection part 2112, otherwise the solder on the circuit board cannot contact the end face of the first connection part 2111 during reflow, and the welding connection between the first connection part 2111 and the circuit board cannot be achieved.

[0033] Preferably, if Figure 1 , Figure 2As shown, the end face of the first connection part 2111 is higher than the end face of the second connection part 2112. When the inductor is placed on the circuit board, since the end face of the second connection part 2112 is lower than the end face of the first connection part 2111, there is an accommodation space between the second connection part 2112 and the circuit board. When dispensing glue to glue the second connection part 2112 to the circuit board, the glue can be accommodated in the accommodation space to ensure the strength of the glue fixation between the second connection part 2112 and the circuit board.

[0034] In this embodiment, the first connection part 2111 and the second connection part 2112 are arranged side by side, and a step is formed between the two. On the one hand, by arranging the first connection part 2111 and the second connection part 2112 side by side, the welding part and the glued part of the pin 21 can be effectively separated, thereby increasing operability. On the other hand, since the two are arranged side by side and the end face of the second connection part 2112 is lower than the end face of the first connection part 2111, the length of one side wall of the connection part 211 is less than the length of the other side wall thereof, thereby making the accommodation space between the second connection part 2112 and the circuit board more open, and more effectively preventing glue from overflowing when the glue is accommodated in the accommodation space.

[0035] Specifically, Figure 2 As shown, an inclined portion 213 is provided on one side of the first connection portion 2111 away from the second connection portion 2112. The design of the inclined portion 213 increases the contact area between the first connection portion 2111 and the solder, and the solder can wrap at least a portion of the inclined portion 213 after reflow, and more reflow solder can be accommodated between the inclined portion 213 and the circuit board, thereby making the connection between the first connection portion 2111 and the circuit board tighter, and the fixing effect is better, which helps to resist external vibration and impact, and ensure the stability of the inductor on the circuit board.

[0036] Preferably, if Figure 1 As shown, at least one side wall of the extension portion 212 extends in a direction toward the connection portion 211 and away from the other side wall of the extension portion 212. It can be understood that at this time, the width of the extension portion 212 gradually increases during the extension process toward the connection portion 211, so that the width of the connection portion 211 is equal to the widest part of the extension portion 212, and the contact area between the connection portion 211 and the circuit board is increased, which also increases the area of ​​welding and / or gluing between the two, thereby increasing the connection strength.

[0037] In this embodiment, the connecting portion 211 and the extending portion 212 are integrally formed.

[0038] Preferably, two ends of the winding 2 extend from opposite side walls of the magnetic core 1 to form two pins 21. In this case, the pins 21 are distributed on both sides of the magnetic core 1, which helps to improve wiring, increase space utilization, optimize heat dissipation performance, and facilitate installation and maintenance.

[0039] Specifically, there are multiple windings 2 , and the multiple windings 2 are arranged at intervals along a direction perpendicular to the distribution direction of the two pins 21 of one winding 2 .

[0040] In some embodiments, the two pins 21 of each winding 2 include a connecting portion 211, and are respectively welded and glued to the circuit board through the first connecting portion 2111 and the second connecting portion 2112. At this time, each pin 21 is connected to the circuit board by welding and gluing, so that the connection between the inductor device and the circuit board is very reliable and has high fault tolerance.

[0041] In this embodiment, one pin 21 of each winding 2 includes a connection portion 211, and the connection portions 211 of two adjacent windings are distributed diagonally. At this time, one pin 21 of each winding 2 is fixedly connected to the circuit board by gluing and welding, and the connection portions 211 of two adjacent windings 2 are distributed diagonally, which ensures the stability of the fixed connection between the inductor and the circuit board, reduces the workload of welding and gluing, and saves production costs.

[0042] Specifically, the magnetic core 1 is formed by pressing. In some embodiments, the magnetic powder and the winding 2 can be integrally pressed into a mold cavity. In other embodiments, the magnetic powder can be pressed into a magnetic core 1 separately, and then assembled with the winding 2.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An inductor device, characterized in that: include: A magnetic core (1) and a winding (2), wherein the winding (2) is partially accommodated in the magnetic core (1), and two ends of the winding (2) extend to the outside of the magnetic core (1) to form two pins (21), at least one of the pins (21) comprises a connected connecting portion (211) and an extending portion (212), the connecting portion (211) comprises a first connecting portion (2111) and a second connecting portion (2112), the first connecting portion (2111) is welded to a circuit board, and the second connecting portion (2112) is glued to the circuit board.

2. The inductor device according to claim 1, characterized in that: The end surface of the first connecting portion (2111) is higher than the end surface of the second connecting portion (2112).

3. The inductor device according to claim 2, characterized in that: The first connecting portion (2111) and the second connecting portion (2112) are arranged side by side, and a step is formed between them.

4. The inductor device according to claim 3, characterized in that: A sloped portion (213) is provided on a side of the first connecting portion (2111) away from the second connecting portion (2112).

5. The inductor device according to claim 1, characterized in that: At least one side wall of the extension portion (212) extends in a direction toward the connection portion (211) and away from another side wall of the extension portion (212).

6. The inductor device according to claim 1, characterized in that: Two ends of the winding (2) extend from two opposite side walls of the magnetic core (1) to form two pins (21).

7. The inductor device according to any one of claims 1 to 6, characterized in that: The number of the windings (2) is multiple.

8. The inductor device according to claim 7, characterized in that: One pin (21) of each winding (2) comprises a connecting portion (211), and the connecting portions (211) of two adjacent windings (2) are distributed diagonally.

9. The inductor device according to any one of claims 1 to 6, characterized in that: The magnetic core (1) is formed by pressing magnetic powder and then assembled with the winding (2) to form the inductor device.

10. The inductor device according to any one of claims 1 to 6, characterized in that: The inductor device is formed by placing magnetic powder and the winding (2) in a mold cavity and pressing them into a single piece.

Images