Inductor and inductor assembly
By setting a limit structure on the insulator, the conductive row and the lead-out end of the coil are fixed, which solves the problem of failure of the conductive row and the coil connection between the inductor in a vibrating environment, and improves the shock resistance and reliability of the inductor.
Patent Information
- Application Number
- CN202422697825.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-05
AI Technical Summary
The connection position of the conductive row of the inductor and the coil is prone to failure in connection in a vibrating environment.
A limit structure is provided on the insulator, through which the conductive row is abutted and fixed to the lead-out end of the coil, enhancing the shock resistance of the conductive row and preventing its movement relative to the lead-out end of the coil.
Effectively prevent the connection failure of the conductive discharge into the coil in the vibrating environment, and improve the reliability and stability of the inductor.
Smart Images
Figure CN223296644U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inductors, in particular to an inductor and an inductor assembly. Background Art
[0002] Inductors are electronic components that store magnetic field energy and perform functions such as filtering, energy storage, signal processing, and electromagnetic interference suppression in various electronic devices. Some inductors with two coils require a conductive bus to connect the two coils. In actual applications, due to the vibration-prone operating environment of the inductor, the connection between the conductive bus and the coils is prone to failure. Utility Model Content
[0003] The utility model mainly solves the problem that connection failure is easy to occur at the connection position between the conductive bar and the coil of the inductor.
[0004] According to the first aspect, an embodiment provides an inductor, comprising a first coil, a second coil, a magnetic core, an insulator, and a conductive bar, wherein the magnetic core is arranged on the inner side of the first coil and the second coil, the insulator fixes the first coil, the second coil, and the magnetic core, the first coil and the second coil respectively have a first lead-out end and a second lead-out end exposed from the insulator, the conductive bar electrically connects the first lead-out end with the second lead-out end, and a limiting structure is provided on the insulator, the limiting structure being located on a side of the conductive bar away from the first lead-out end and the second lead-out end, so as to abut and fix the conductive bar against the first lead-out end and the second lead-out end.
[0005] In some embodiments, the limiting structure includes a first limiting block and a second limiting block, the first limiting block is arranged near the first lead-out end and is used to abut and fix the conductive row with the first lead-out end, and the second limiting block is arranged near the second lead-out end and is used to abut and fix the conductive row with the second lead-out end.
[0006] In some embodiments, at least one of the first limiting block and the second limiting block is an L-shaped limiting block.
[0007] In some embodiments, the conductive bar is fixed to the first lead-out terminal and the second lead-out terminal by welding.
[0008] In some embodiments, the conductive bar includes a first fixing portion, a second fixing portion and a main body portion, the main body portion is connected between the first fixing portion and the second fixing portion, a groove is provided on the main body portion at the connection with the first fixing portion, and / or a groove is provided on the main body portion at the connection with the second fixing portion.
[0009] In some embodiments, the shape of the groove is one of the following: rectangular, square.
[0010] In some embodiments, the depth of the groove does not exceed half the height of the main body.
[0011] In some embodiments, a length of the first lead end exposed from the insulator is greater than a length of the second lead end exposed from the insulator.
[0012] In some embodiments, a height of the first fixing portion is greater than a height of the second fixing portion, and the conductive bar has an L-shaped structure.
[0013] According to a second aspect, an embodiment provides an inductor assembly, comprising the inductor described in any one of the above embodiments and a housing, wherein the inductor is disposed inside the housing.
[0014] According to the inductor of the above embodiment, a limiting structure is provided on the insulator, and the limiting structure is located on the side of the conductive bar away from the first lead-out terminal and the second lead-out terminal. This can fix the conductive bar in contact with the first lead-out terminal and the second lead-out terminal, making it difficult for the conductive bar to move relative to the first lead-out terminal and the second lead-out terminal. When the inductor is used in a vibrating environment, the connection between the conductive bar and the coil is unlikely to fail. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A three-dimensional view of an embodiment of an inductor of the present invention;
[0016] Figure 2 for Figure 1 A three-dimensional view of the inductor from another angle;
[0017] Figure 3 for Figure 1 A top view of the inductor from another angle;
[0018] Figure 4 for Figure 1 Schematic diagram of the separation of the conductive bar and lead terminals of the inductor.
[0019] Reference numerals:
[0020] 1. First coil; 11. First lead-out terminal; 2. Second coil; 21. Second lead-out terminal; 3. Insulator; 4. Conductive bar; 41. First fixing portion; 42. Second fixing portion; 43. Main body; 44. Groove; 5. Limiting structure; 51. First limiting block; 52. Second limiting block. DETAILED DESCRIPTION
[0021] The present invention is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.
[0022] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.
[0023] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).
[0024] In some scenarios, due to the limited installation environment of the inductor, the inductor needs to use two or more coils in series to reduce the size in a certain direction. The series connection of the coils is generally achieved through the conductive bar 4. Specifically, the two ends of the conductive bar are respectively connected to the lead-out ends of the two coils. However, since the use environment of the inductor may be vibrating, it is easy for the conductive bar to move relative to the lead-out end of the coil, which in turn causes the connection between the conductive bar and the lead-out end of the coil to fail. To this end, a limiting structure can be set on the insulator to fix the conductive bar, thereby preventing the conductive bar from moving relative to the lead-out end of the coil and solving the problem of connection failure.
[0025] According to the first aspect, please refer to Figure 1 In one embodiment, an inductor is provided, including a first coil 1 , a second coil 2 , a magnetic core (not shown in the figure), an insulator 3 and a conductive bar 4 .
[0026] The magnetic core is placed inside the first coil 1 and the second coil 2, and the insulator 3 secures the first and second coils 1 and 2 to the magnetic core. The magnetic core can consist of two parts: one part is placed inside the first coil 1, and the other part is placed inside the second coil 2. The first and second coils 1 and 2 can be secured to the magnetic core using injection molding. Specifically, the magnetic core is installed inside the first and second coils 1 and 2, and then the first and second coils 1 and 2 are encased and secured to the magnetic core using the injection-molded insulator 3.
[0027] The first coil 1 and the second coil 2 respectively have a first lead-out end 11 and a second lead-out end 21 exposed from the insulator 3. A conductive bus 4 electrically connects the first lead-out end 11 and the second lead-out end 21. Specifically, the first lead-out end 11 and the second lead-out end 21 extend from the surface of the insulator 3. The conductive bus 4 can be made of copper and can be electrically connected to the first lead-out end 11 and the second lead-out end 21 by welding.
[0028] A limiting structure 5 is provided on the insulator 3. The limiting structure 5 is located on the side of the conductive bar 4 away from the first lead end 11 and the second lead end 21, thereby securing the conductive bar 4 against the first lead end 11 and the second lead end 21. Specifically, the limiting structure 5 can be a bump on the insulator 3, with the conductive bar 4 secured between the bump and the lead ends. In other embodiments, the limiting structure 5 can also be a groove 44 provided on the insulator 3, with the conductive bar 4 embedded in the groove 44 and secured against the lead ends.
[0029] The retaining structure 5 secures the conductive bar 4 against the first and second lead terminals 11, 21, improving its shock resistance. The bar 4 is less likely to move relative to the first and second lead terminals 11, 21, and is less likely to experience connection failure between the bar 4 and the coil in a vibrating environment. To secure the conductive bar 4, the retaining structure 5 can be first inserted into the retaining structure 5, and then the bar 4 and the lead terminals can be welded or bonded with conductive adhesive. The retaining structure 5 helps position the bar 4 during installation.
[0030] In some embodiments, please refer to Figure 1-Figure 4 The limiting structure 5 includes a first limiting block 51 and a second limiting block 52. The first limiting block 51 is disposed near the first lead-out terminal 11 and is used to abut and secure the conductive bar 4 against the first lead-out terminal 11. The second limiting block 52 is disposed near the second lead-out terminal 21 and is used to abut and secure the conductive bar 4 against the second lead-out terminal 21. Specifically, the two ends of the conductive bar 4 are connected to the first lead-out terminal 11 and the second lead-out terminal 21, respectively. The first limiting block 51 limits the first end of the conductive bar 4 to abut against the first lead-out terminal 11, and the second limiting block 52 limits the other end of the conductive bar 4 to abut against the second lead-out terminal 21.
[0031] In some embodiments, please refer to Figure 1-Figure 4 At least one of the first and second stoppers 51, 52 is an L-shaped stopper. Specifically, the first stopper 51 is an L-shaped stopper. The first end of the conductive bar 4 is mounted between the first stopper 51 and the first lead-out terminal 11, where it abuts against the first lead-out terminal 11. The L-shaped stopper limits the conductive bar 4 in a direction perpendicular to the conductive bar 4 and in the direction in which it extends, improving its seismic resistance and reducing the risk of connection failure.
[0032] In some embodiments, please refer to Figure 1-Figure 4 The conductive bus 4 is secured to the first lead terminal 11 and the second lead terminal 21 by welding. Specifically, the conductive bus 4 can be made of copper, as can the first lead terminal 11 and the second lead terminal 21. The conductive bus 4 is secured to the lead terminals by welding. In other embodiments, the conductive bus 4 can be made of other conductors, such as aluminum. The conductive bus 4 can also be secured to the lead terminals by bonding with conductive adhesive.
[0033] In some embodiments, please refer to Figure 1-Figure 4 The conductive bar 4 includes a first fixing portion 41, a second fixing portion 42, and a main body 43. The main body 43 is connected between the first fixing portion 41 and the second fixing portion 42. A groove 44 is provided on the main body 43 where it connects to the first fixing portion 41, and a groove 44 is provided on the main body 43 where it connects to the second fixing portion 42. During soldering of the conductive bar 4 to the lead-out terminal, the groove 44 facilitates the concentration of soldering heat and the flow of solder, thus enhancing the soldering effect and making the connection between the conductive bar 4 and the lead-out terminal more secure.
[0034] In some embodiments, please refer to Figure 1-Figure 4 The shape of groove 44 can be one of the following: rectangular or square. The depth of groove 44 should not exceed half the height of main body 43. The provision of groove 44 can facilitate soldering heat concentration and solder flow, but it will somewhat reduce the structural strength of conductive bar 4. The above configuration enhances soldering while ensuring a certain structural strength of conductive bar 4.
[0035] In some embodiments, please refer to Figure 4 The length of first lead end 11 exposed from insulator 3 is greater than the length of second lead end 21 exposed from insulator 3. The high temperature during welding between conductive bar 4 and first lead end 11 could damage insulator 3. To prevent damage to insulator 3 during welding, the exposed length of first lead end 11 is longer. The exposed length of second lead end 21 is shorter due to the flat insulator 3 where insulator 3 is located, where first lead end 11 is located.
[0036] In some embodiments, please refer to Figure 1-Figure 4 The height of the first fixing portion 41 is greater than that of the second fixing portion 42, and the conductive bar 4 has an L-shaped structure. In actual use, the inductor needs to be installed inside the housing. Due to the shape restrictions of some housings, the headroom of the inductor gradually decreases from the first lead end 11 to the second lead end 21. The L-shaped conductive bar 4 ensures a safe insulation distance of at least 5 mm between the conductive bar 4 and the housing.
[0037] According to a second aspect, an embodiment provides an inductor assembly, comprising the inductor according to any one of the above embodiments and a housing, wherein the inductor is disposed inside the housing.
[0038] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.
Claims
1. An inductor, characterized in that: The invention comprises a first coil, a second coil, a magnetic core, an insulator and a conductive bar, wherein the magnetic core is arranged on the inner side of the first coil and the second coil, the insulator fixes the first coil, the second coil and the magnetic core, the first coil and the second coil respectively have a first lead-out end and a second lead-out end exposed from the insulator, the conductive bar electrically connects the first lead-out end with the second lead-out end, and a limiting structure is provided on the insulator, the limiting structure is located on the side of the conductive bar away from the first lead-out end and the second lead-out end, so as to fix the conductive bar in contact with the first lead-out end and the second lead-out end.
2. The inductor according to claim 1, wherein The limiting structure includes a first limiting block and a second limiting block. The first limiting block is arranged near the first lead-out end and is used to abut and fix the conductive bar against the first lead-out end. The second limiting block is arranged near the second lead-out end and is used to abut and fix the conductive bar against the second lead-out end.
3. The inductor according to claim 2, wherein: At least one of the first limiting block and the second limiting block is an L-shaped limiting block.
4. The inductor according to claim 2, wherein: The conductive bar is fixed to the first lead-out end and the second lead-out end by welding.
5. The inductor according to claim 4, wherein: The conductive bar includes a first fixing portion, a second fixing portion and a main body portion, wherein the main body portion is connected between the first fixing portion and the second fixing portion, and a groove is provided on the main body portion at the connection with the first fixing portion, and / or a groove is provided on the main body portion at the connection with the second fixing portion.
6. The inductor according to claim 5, wherein: The shape of the groove is one of the following: rectangular and square.
7. The inductor according to claim 5, wherein: The depth of the groove does not exceed half the height of the main body.
8. The inductor according to claim 5, wherein: The length of the first lead end exposed from the insulator is greater than the length of the second lead end exposed from the insulator.
9. The inductor according to claim 8, wherein The height of the first fixing portion is greater than that of the second fixing portion, and the conductive bar has an L-shaped structure.
10. An inductor assembly comprising the inductor according to any one of claims 1 to 9 and a housing, wherein the inductor is arranged inside the housing.