Common mode inductor with stable structure

Abstract

The utility model relates to the technical field of inductors, and discloses a common mode inductor with a stable structure, which comprises a magnetic core, magnetic core supporting blocks are fixedly connected to two sides of the outer part of the magnetic core, an empty groove is formed in the top of each magnetic core supporting block, two positioning grooves are formed in one side of the outer part of each magnetic core supporting block, and the two positioning grooves are matched with the empty grooves. Two metal sheets are fixedly connected to the other sides of the exteriors of the magnetic core supporting blocks, a positioning block is fixedly connected to one side of the top of each metal sheet, a limiting hook is fixedly connected to the other side of the top of each metal sheet, a cover plate is fixedly connected to the tops of the two magnetic core supporting blocks, and a cooling fan is fixedly connected to the middle of the cover plate. According to the utility model, through the cooperation of the magnetic core, the magnetic core supporting block, the empty groove, the positioning groove, the metal sheet, the positioning block, the limiting hook and the cover plate, the wire damage risk can be reduced, the welding point of the leading-out end can be protected, the welding performance of a product can be improved, the electrical performance of the product can be improved, and the manufacturing efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, in particular to a common-mode inductor with a stable structure. Background Art

[0002] Common mode inductor usually refers to common mode inductor, also known as common mode transformer or CM inductor. It is an inductor device used to process common mode signals in circuits. Common mode signals refer to signals that change in the same direction at both input ports at the same time. The application of common mode inductors in electronic circuits is mainly to suppress or reduce common mode noise.

[0003] When welding, the existing common-mode inductors have no certain limit and protection at the welding points, which makes the welding points easy to desolder, and the winding wire leads to damage when leading out. In addition, the use of a single coil winding not only has a large amount of work, but also repeating the above steps after winding a circle will increase the welding process, thereby affecting the production efficiency of the product. In view of the above problems, a common-mode inductor with a stable structure is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a common-mode inductor with a stable structure, aiming to improve the existing common-mode inductors in the prior art. When welding, the welding points do not have certain limits and protections, which makes the welding points easy to desolder, and the winding wires will cause the lead-out ends of the winding wires to be damaged when they are led out. In addition, the use of a single set of coils for winding not only has a large amount of engineering work, but also repeating the above steps after winding one circle will increase the welding operation process, thereby affecting the production efficiency of the product.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a common-mode inductor with a stable structure, comprising a magnetic core, both sides of the outside of the magnetic core are fixedly connected with magnetic core support blocks, the top of the magnetic core support block is provided with an empty groove, one side of the outside of the magnetic core support block is provided with two positioning grooves, the other side of the outside of the magnetic core support block is fixedly connected with two metal sheets, one side of the top of the metal sheet is fixedly connected with a positioning block, the other side of the top of the metal sheet is fixedly connected with a limiting hook, the tops of the two magnetic core support blocks are fixedly connected with a cover plate, the middle part of the cover plate is fixedly connected with a cooling fan, both sides of the outside of the cover plate are provided with buffer grooves, and a protective component is arranged inside the buffer groove.

[0006] As a further description of the above technical solution:

[0007] The protective assembly includes a support rod, both ends of which are fixedly connected to the inner wall of the buffer groove, moving blocks are slidably connected to both sides of the outside of the support rod, a spring is fixedly connected to the outside of the moving block, a connecting rod is rotatably connected to the outside of the moving block, one end of the two connecting rods is rotatably connected to a fixed seat, and a protective plate is fixedly connected to the outside of the fixed seat.

[0008] As a further description of the above technical solution:

[0009] The empty slot is in an inverted trapezoidal shape, and the metal sheet is in an L-shape.

[0010] As a further description of the above technical solution:

[0011] Chamfers are arranged on both sides of the top of the cover plate.

[0012] As a further description of the above technical solution:

[0013] A first winding is sleeved on one side of the outer part of the magnetic core, and a second winding is sleeved on the other side of the outer part of the magnetic core.

[0014] As a further description of the above technical solution:

[0015] One side of the first winding is in contact with the metal sheet, and the other side of the first winding is engaged with the limiting hook.

[0016] As a further description of the above technical solution:

[0017] The first winding is externally fixedly connected to the outside of one of the metal sheets, and the second winding is externally fixedly connected to the outside of the other metal sheet.

[0018] As a further description of the above technical solution:

[0019] One end of the spring away from the moving block is fixedly connected to the inner wall of the buffer groove, and the spring is slidably connected to the outer periphery of the support rod.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, through the cooperation among the magnetic core, the magnetic core support block, the empty slot, the positioning slot, the metal sheet, the positioning block, the limit hook and the cover plate, the risk of wire damage can be reduced, the welding point of the lead-out end can be protected, the welding performance of the product can be improved, the electrical performance of the product can be improved and the manufacturing efficiency can be improved.

[0022] 2. In the utility model, through the cooperation among the buffer groove, the support rod, the moving block, the spring, the connecting rod, the fixing seat and the protective plate, the protective plates on both sides of the common-mode inductor can play a protective role when the common-mode inductor falls or is subjected to external force, and the heat dissipation effect of the common-mode inductor by the cooling fan can avoid excessive temperature and affect the normal use of the common-mode inductor, thereby achieving the purpose of prolonging the service life of the common-mode inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a common-mode inductor with a stable structure proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of a magnetic core of a common-mode inductor with a stable structure proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of a metal sheet of a common-mode inductor with a stable structure proposed by the utility model;

[0026] Figure 4 The present invention is a schematic structural diagram of a buffer slot of a common-mode inductor with a stable structure.

[0027] Legend:

[0028] 1. Magnetic core; 2. Magnetic core support block; 3. Empty slot; 4. Positioning slot; 5. Metal sheet; 6. Positioning block; 7. Limit hook; 8. Cover plate; 9. Chamfer; 10. Cooling fan; 11. First winding; 12. Second winding; 13. Buffer slot; 14. Support rod; 15. Moving block; 16. Spring; 17. Connecting rod; 18. Fixed seat; 19. Protective plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1-Figure 3The utility model provides an embodiment: a common-mode inductor with a stable structure, including a magnetic core 1, magnetic core support blocks 2 are fixedly connected on both sides of the outer side of the magnetic core 1, an empty slot 3 is opened on the top of the magnetic core support block 2, two positioning slots 4 are opened on one side of the outer side of the magnetic core support block 2, two metal sheets 5 are fixedly connected on the other side of the outer side of the magnetic core support block 2, a positioning block 6 is fixedly connected on one side of the top of the metal sheet 5, and a limiting hook 7 is fixedly connected on the other side of the top of the metal sheet 5, a cover plate 8 is fixedly connected to the top of the two magnetic core support blocks 2, a cooling fan 10 is fixedly connected to the middle of the cover plate 8, buffer slots 13 are opened on both sides of the outer side of the cover plate 8, and a protective component is arranged inside the buffer slot 13,

[0031] Specifically, the cover plate 8 is installed on the top of the magnetic core support block 2 to ensure that it will not shift during use, and the cover plate 8 will completely cover the top of the empty slot 3. This design enables the cover plate 8 to effectively protect the external windings of the magnetic core 1 to prevent them from falling off due to external factors, and also ensures that the first winding 11 and the second winding 12 can remain stable during the entire working process and will not loosen or fall off due to long-term operation. When the common-mode inductor is in working state, heat will be generated. The cooling fan 10 inside the cover plate 8 plays a role in heat dissipation, taking out the heat generated inside, and preventing the common-mode inductor from being affected by excessive temperature and affecting its normal use.

[0032] Reference Figure 1 , Figure 2 and Figure 4 The protective assembly includes a support rod 14, both ends of the support rod 14 are fixedly connected to the inner wall of the buffer groove 13, both sides of the outside of the support rod 14 are slidably connected with moving blocks 15, the outside of the moving block 15 is fixedly connected with a spring 16, the outside of the moving block 15 is rotatably connected with a connecting rod 17, one end of the two connecting rods 17 is rotatably connected to a fixed seat 18, the outside of the fixed seat 18 is fixedly connected with a protective plate 19, the end of the spring 16 away from the moving block 15 is fixedly connected to the inner wall of the buffer groove 13, and the spring 16 is slidably connected to the outer periphery of the support rod 14.

[0033] Specifically, when the common-mode inductor falls and is subjected to external force, the protective plate 19 is subjected to force, thereby raising the fixing seat 18 and driving the connecting rod 17, and then the connecting rod 17 drives the moving block 15 to slide outside the support rod 14 and compress the spring 16, thereby eliminating the external force and protecting the common-mode inductor.

[0034] Reference Figure 1-Figure 3The slot 3 is in an inverted trapezoidal shape, the metal sheet 5 is in an L shape, chamfers 9 are provided on both sides of the top of the cover plate 8, a first winding 11 is sleeved on one side of the outside of the magnetic core 1, and a second winding 12 is sleeved on the other side of the outside of the magnetic core 1, one side of the outside of the first winding 11 is in contact with the metal sheet 5, and the other side of the outside of the first winding 11 is engaged in the limiting hook 7, the outside of the first winding 11 is fixedly connected to the outside of one of the metal sheets 5, and the outside of the second winding 12 is fixedly connected to the outside of the other metal sheet 5.

[0035] Specifically, the slot 3 is in an inverted trapezoidal shape, thereby reducing the risk of damage to the first winding 11 and the second winding 12. The first winding 11 and the second winding 12 are wound around the outside of the magnetic core 1 in an alternating manner, and then the metal sheet 5 is installed in the positioning slot 4 on the outside of the magnetic core support block 2, thereby achieving the effect of easy positioning and quick installation. Then, the lead end of the first winding 11 is passed through the slot 3 and then installed on the outside of one of the metal sheets 5, so that the lead end of the first winding 11 is engaged in the limiting hook 7 to complete fixation, thereby achieving the effect of facilitating welding.

[0036] Working principle: When using a common-mode inductor with a stable structure, firstly, the first winding 11 and the second winding 12 are wound around the outside of the magnetic core 1 in an interlaced winding manner, and then the metal sheet 5 is installed inside the positioning groove 4 on the outside of the magnetic core support block 2, so as to achieve the effect of easy positioning and quick installation, and then the lead-out end of the first winding 11 is passed through the empty groove 3 and then installed on the outside of one of the metal sheets 5, so that the lead-out end of the first winding 11 is engaged in the limiting hook 7 to complete the fixation, and then the effect of easy welding is achieved, and then the second winding 12 is interlaced with the first winding 11, and then the lead-out end of the second winding 12 is installed on the outside of another metal sheet 5 in the opposite direction to the lead-out end of the first winding 11, and then the cover plate 8 is installed on the magnetic core support block 2. The cover plate 8 is located on the outside of the support block 2, so that the cover plate 8 is located on the top of the empty slot 3, and then the cover plate 8 covers the outside of the first winding 11 and the second winding 12, thereby reducing the risk of damage to the first winding 11 and the second winding 12. When the common-mode inductor is in a working state, heat will be generated. The cooling fan 10 on the inside of the cover plate 8 plays a role in heat dissipation, bringing out the heat generated inside, and preventing the common-mode inductor from being affected by excessive temperature and thus affecting its normal use. Then, when the common-mode inductor falls or is subjected to external force, the protective plates 19 on both sides play a protective role. When the protective plates 19 are subjected to force, the fixing seat 18 is raised to drive the connecting rod 17, and then the connecting rod 17 drives the moving block 15 to slide on the outside of the support rod 14 and compress the spring 16, thereby eliminating the external force and protecting the common-mode inductor.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A common-mode inductor with a stable structure, comprising a magnetic core (1), characterized in that: The magnetic core (1) is fixedly connected to magnetic core support blocks (2) on both sides of its exterior, an empty slot (3) is provided on the top of the magnetic core support block (2), two positioning slots (4) are provided on one side of the exterior of the magnetic core support block (2), two metal sheets (5) are fixedly connected to the other side of the exterior of the magnetic core support block (2), a positioning block (6) is fixedly connected to one side of the top of the metal sheet (5), a limiting hook (7) is fixedly connected to the other side of the top of the metal sheet (5), a cover plate (8) is fixedly connected to the top of the two magnetic core support blocks (2), a cooling fan (10) is fixedly connected to the middle of the cover plate (8), buffer slots (13) are provided on both sides of the exterior of the cover plate (8), and a protective component is arranged inside the buffer slot (13).

2. The common-mode inductor with a stable structure according to claim 1, characterized in that: The protective component comprises a support rod (14), both ends of the support rod (14) are fixedly connected to the inner wall of the buffer groove (13), both sides of the outside of the support rod (14) are slidably connected to moving blocks (15), the outside of the moving block (15) is fixedly connected to a spring (16), the outside of the moving block (15) is rotatably connected to a connecting rod (17), one end of the two connecting rods (17) is rotatably connected to a fixed seat (18), and the outside of the fixed seat (18) is fixedly connected to a protective plate (19).

3. The common-mode inductor with a stable structure according to claim 1, characterized in that: The empty slot (3) is in an inverted trapezoidal shape, and the metal sheet (5) is in an L shape.

4. The common-mode inductor with a stable structure according to claim 1, characterized in that: Chamfers (9) are provided on both sides of the top of the cover plate (8).

5. The common mode inductor with a stable structure according to claim 1, characterized in that: A first winding (11) is sleeved on one side of the outside of the magnetic core (1), and a second winding (12) is sleeved on the other side of the outside of the magnetic core (1).

6. The common mode inductor with a stable structure according to claim 5, characterized in that: One side of the outside of the first winding (11) is in contact with the metal sheet (5), and the other side of the outside of the first winding (11) is engaged with the inside of the limiting hook (7).

7. The common mode inductor with a stable structure according to claim 5, characterized in that: The first winding (11) is externally fixedly connected to the outside of one of the metal sheets (5), and the second winding (12) is externally fixedly connected to the outside of another of the metal sheets (5).

8. The common-mode inductor with a stable structure according to claim 2, characterized in that: One end of the spring (16) away from the moving block (15) is fixedly connected to the inner wall of the buffer groove (13), and the spring (16) is slidably connected to the outer periphery of the support rod (14).

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