Integrally-formed common-mode inductor
By incorporating a moisture-proof housing and spring-loaded fixing structure on the common-mode inductor, combined with a foldable mounting plate and tilted heat dissipation vents, the vibration resistance, moisture protection, and heat dissipation issues of the common-mode inductor are solved, achieving stable installation and efficient heat dissipation.
Patent Information
- Application Number
- CN202520433571.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-13
AI Technical Summary
Existing common-mode inductors have weak vibration and shock resistance, poor waterproof and moisture-proof performance, and are large in size, making them difficult to fix and install, and thus cannot meet the requirements of surface mount technology.
An integrated common mode inductor was designed, which uses a moisture-proof shell to wrap the inductor body and sets multiple sets of springs to fix it between the frame and the inner wall of the moisture-proof shell. It is stably installed using a foldable mounting plate, and inclined heat dissipation vents are set on both sides of the shell to improve heat dissipation performance.
It enhances the inductor's resistance to vibration and shock, improves its waterproof and moisture-proof performance, simplifies the installation and fixing process, and improves heat dissipation.
Smart Images

Figure CN223884235U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electronic component manufacturing technical field especially relates to a one-piece molding common mode inductor. BACKGROUND
[0002] Common mode inductance, also called common mode choke, is often used in computer switching power supply to filter common mode electromagnetic interference signals. Inductor is a component that can convert electrical energy into magnetic energy and store it. It is generally composed of framework, coil, shielding cover, packaging material and magnetic core or iron core. The conventional common mode inductor is directly wound on the magnetic core, and the wire leading end wound on the magnetic core is directly welded. The inductor is in plug-in structure.
[0003] However, with the rise of surface mounting technology, various electronic and electrical equipment products have increasing demand for surface-mounted electronic components. The conventional common mode inductor cannot meet the market requirements. Moreover, the existing common mode inductor is prone to short circuit or damage due to external impact or water ingress during use. The common mode inductor has weak anti-vibration and anti-impact ability, poor waterproof and moisture-proof performance, large volume, and is not easy to fix and install. Therefore, it is necessary to develop a common mode inductor to solve the above problems.
[0004] To solve the above problems, the utility model provides a one-piece molding common mode inductor. UTILITY MODEL CONTENTS
[0005] The utility model aims to solve one of the technical problems in the related art at least to some extent. Therefore, one purpose of the utility model is to provide a one-piece molding common mode inductor with simple structure, moisture-proof and moisture-proof, good heat dissipation and easy installation.
[0006] The technical scheme is as follows:
[0007] A one-piece molding common mode inductor comprises an inductor main body, the inductor main body comprises a framework, two groups of coils are arranged in the framework, two springs are symmetrically arranged on the four sides of the framework, springs are arranged on the four corners of the upper and lower sides of the framework, a moisture-proof shell is arranged outside the inductor main body, the moisture-proof shell comprises a shell main body, an installation cavity is arranged in the moisture-proof shell corresponding to the inductor main body, a cover plate is detachably connected to one side of the shell main body, installation plates are rotatably connected to the other two opposite sides of the shell main body, one side of the installation plate is rotatably connected to the shell main body, and the opposite side is detachably connected to the shell main body, a plurality of installation holes are arranged on the installation plate, and a plurality of heat dissipation openings are arranged on the two sides of the shell main body corresponding to the installation plate.
[0008] Further, the moisture-proof shell is a hollow flat sheet shell.
[0009] Further, the heat dissipation port is inclined, and the heat dissipation port away from one end of the shell body is inclined downward.
[0010] Further, one side of the mounting plate is rotationally connected to one side of the shell body through a hinged connecting piece, the mounting plate away from the hinged connecting piece is provided with a protruding buckle, and the mounting plate away from the hinged connecting piece and towards the shell body is provided with a connecting buckle.
[0011] Further, one side of the shell body is provided with an opening corresponding to the cover plate, the cover plate is provided with screw holes at four corners, the shell body is provided with connecting screw holes at four corners of the opening side corresponding to the screw holes, and matched fixing screws are arranged corresponding to the screw holes and the connecting screw holes.
[0012] Further, one end of the spring is fixedly connected to the framework, and the other end is fixedly connected to the inner wall of the mounting cavity.
[0013] The utility model discloses the beneficial effect:
[0014] 1. By setting the moisture-proof shell outside the inductor main body, and setting multiple groups of springs between the framework of the inductor main body and the inner wall of the mounting cavity of the moisture-proof shell, the impact force when the inductor main body is connected with the moisture-proof shell is reduced by using the spring, so that the inductor can be more resistant to vibration and impact when fixed in the moisture-proof shell, and the practicality of the utility model is effectively improved.
[0015] 2. By rotatingly connecting the foldable mounting plate outside the moisture-proof shell on both sides, the moisture-proof shell can be more firmly and stably installed and fixed through the mounting plate on both sides, and the practicality of the utility model is effectively improved.
[0016] 3. By setting multiple heat dissipation ports on both sides of the moisture-proof shell, the heat dissipation performance of the moisture-proof shell is improved by using the heat dissipation port, and the inclined heat dissipation port can effectively reduce and reduce the moisture entering the moisture-proof shell from the heat dissipation port, and the practicality of the utility model is effectively improved. DRAWINGS
[0017] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model. In the drawings:
[0018] Figure 1 It is the structural schematic diagram of the utility model.
[0019] Figure 2 It isFigure 1 Structure diagram of the moisture-proof shell in the utility model,
[0020] Figure 3 Structure diagram of the moisture-proof shell in the utility model.
[0021] Figure 4 Structure diagram of the inductor main body in the utility model.
[0022] Figure 5 Structure diagram of the moisture-proof shell in the utility model.
[0023] In the figure: 1, moisture-proof shell; 2, cover plate; 3, mounting plate; 4, fixing screw; 5, inductor main body; 101, heat dissipation opening; 102, connecting opening; 103, connecting screw hole; 201, screw hole; 301, mounting hole; 302, connecting buckle; 303, protruding buckle; 501, framework; 502, spring. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0025] Examples of the described embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.
[0026] Please refer to Figures 1 to 5 As shown in the figure, an integrally formed common mode inductor comprises an inductor main body 5, the inductor main body 5 is externally provided with a moisture-proof shell 1, the moisture-proof shell 1 comprises a shell main body, an installation cavity is arranged in the moisture-proof shell 1 corresponding to the inductor main body 5, the inductor main body 5 comprises a framework 501, two groups of coils are arranged in the framework 501, two springs 502 are symmetrically arranged on four sides of the framework 501, four corners of upper and lower sides of the framework 501 are provided with springs 502, one end of the spring 502 is fixedly connected with the framework 501, and the other end is fixedly connected with the inner wall of the installation cavity.
[0027] According to the scheme, the utility model discloses a moistureproof casing 1 is set up outside the inductor main body 5, and the inductor main body 5 is protected, and the skeleton 501 of inductor main body 5 and the mounting cavity inner wall of moistureproof casing 1 are fixed with multiple groups of springs 502 in multidirectional, and the inductor main body 5 is fixed in moistureproof casing 1 by spring 502 with resilience shock resistance, thereby reducing the impact force when inductor main body 5 is connected with moistureproof casing 1, so that the inductor main body 5 can be more resistant to vibration, impact resistance when being fixed in moistureproof casing 1.
[0028] As Figures 3 to 5 The moistureproof casing 1 is hollow and flat sheet type casing, and the casing body 1 is detachably connected with the cover plate 2 on one side, and the casing body 1 is opened on the side corresponding to the cover plate, and the cover plate 2 is provided with screw holes 201 on four corners, and the casing body is provided with connecting screw holes 103 on four corners on the side corresponding to the screw holes 201, and matching fixing screws 4 are arranged corresponding to the screw holes 201 and the connecting screw holes 103, and the cover plate 2 and the casing body 1 are detachably connected through the fixing screws 4, and the casing body 1 is rotatably connected with the mounting plate 3 on the other two opposite sides.
[0029] The mounting plate 3 is rotatably connected with the casing body on one side through the hinge connecting piece, and the mounting plate 3 is provided with a protruding buckle 303 on the side away from the hinge connecting piece, and the mounting plate 3 is provided with a connecting buckle 302 on the side away from the hinge connecting piece and facing the casing body, and a matching connecting port 102 is arranged on the side of the casing body corresponding to the connecting buckle 302, and the mounting plate 3 and the casing body are detachably connected through the connecting port 102 and the connecting buckle 302, and a plurality of mounting holes 301 are arranged on the mounting plate 3, and a plurality of inclined heat dissipation ports 101 are arranged on the two sides of the casing body corresponding to the mounting plate 3, and the end of the heat dissipation port 101 away from the casing body is inclined downward.
[0030] According to the scheme, the utility model discloses that the mounting plate 3 is rotatably connected on the two sides of the moistureproof casing 1, and the mounting plate 3 has two connection states: one is detachably folded and stored on the two sides of the moistureproof casing 1, and the other is that the mounting plate 3 is rotatably opened on the two sides of the moistureproof casing 1 by separating the connecting buckle 302 and the connecting port 102, and the moistureproof casing 1 is fixed and mounted by using the plurality of mounting holes 301 on the mounting plate 3, so that the moistureproof casing 1 is more firm and stable in installation and fixation.
[0031] And a plurality of heat dissipation ports 101 are arranged on the two sides of the moistureproof casing 1, the air flow between the mounting cavity and the outside is increased by using the heat dissipation port 101, so that the heat dissipation performance of the moistureproof casing 1 is improved, and the inclined heat dissipation port 101 can also effectively reduce and reduce the moisture entering the inside of the moistureproof casing 1 from the heat dissipation port 101, which is more practical.
[0032] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A one-piece molded common mode inductor, characterized in that: The device includes an inductor body, which includes a frame. Two sets of coils are housed within the frame. Two springs are symmetrically arranged on each of the four sides of the frame, and springs are located at the four corners of the top and bottom sides of the frame. A moisture-proof shell is provided outside the inductor body. The moisture-proof shell includes a shell body. A mounting cavity is provided within the moisture-proof shell corresponding to the inductor body. A cover plate is detachably connected to one side of the shell body. Mounting plates are rotatably connected to the shell body on one side and detachably connected to the shell body on the opposite side. Multiple mounting holes are spaced apart on the mounting plates, and multiple heat dissipation vents are provided on both sides of the shell body corresponding to the mounting plates.
2. The integrally molded common mode inductor according to claim 1, characterized in that: The moisture-proof shell is a hollow, flat, sheet-like shell.
3. The integrally molded common mode inductor according to claim 1, characterized in that: The heat dissipation vent is inclined, with the end of the heat dissipation vent away from the main body of the housing tilted downwards.
4. The integrally molded common mode inductor according to claim 1, characterized in that: One side of the mounting plate is rotatably connected to one side of the housing body via a hinge connector. The mounting plate has a protruding buckle on the side away from the hinge connector and a connecting buckle on the side of the mounting plate away from the hinge connector and facing the housing body. A matching connection port is provided on one side of the housing body corresponding to the connecting buckle. The mounting plate and the housing body are detachably connected via the connection port and the connecting buckle.
5. The integrally molded common mode inductor according to claim 1, characterized in that: One side of the housing body is open to the cover plate. The cover plate has screw holes at all four corners. Corresponding to the screw holes, the housing body has connecting screw holes at all four corners of the open side. Matching fixing screws are provided for the screw holes and connecting screw holes. The cover plate and the housing body are detachably connected by fixing screws.
6. The integrally molded common mode inductor according to claim 1, characterized in that: One end of the spring is fixedly connected to the frame, and the other end is fixedly connected to the inner wall of the mounting cavity.