Common mode inductor product

Abstract

The utility model relates to a common mode choke product, relates to inductor technical field, including common mode choke and shell, the shell includes aluminum shell, upper inner plate and upper outer plate, the aluminum shell is provided with the installation slot that the common mode choke is put in completely, the aluminum shell is filled with heat conduction silicone rubber in the installation slot, the heat conduction silicone rubber is filled with heat conduction silicone rubber, the heat conduction silicone rubber is filled with heat conduction silicone rubber, the heat conduction silicone rubber is filled with heat conduction silicone rubber, and the heat conduction silicone rubber is filled with heat conduction silicone rubber. The heat-conducting silicone rubber wraps the common mode inductor and is in contact with the inner wall of the mounting slot, the upper inner plate abuts against the end, provided with the mounting slot, of the aluminum shell and seals the mounting slot, and the upper outer plate abuts against the end, away from the aluminum shell, of the upper inner plate. The upper outer plate is detachably connected with one end, provided with the mounting slot, of the aluminum shell and limits the upper inner plate, and the upper inner plate and the upper outer plate are provided with a first lead hole and a second lead hole which are used for leading out a lead of the common mode inductor. The beneficial effects are that the probability that common mode electricity feels external environment influence is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of inductance, in particular to a common mode inductance product. Background Art

[0002] Common-mode inductors, also called common-mode chokes, are often used in computer switching power supplies to filter common-mode electromagnetic interference signals. In board design, common-mode inductors also act as EMI filters to suppress the outward radiation of electromagnetic waves generated by high-speed signal lines.

[0003] The common-mode inductor body is installed on the circuit board. To ensure product reliability, it can only be fixed with silicone rubber. Silicone rubber has weak bonding strength, so the common-mode inductor is usually fixed with a bracket or base plate, leaving the common-mode inductor exposed in the circuit board. In a humid environment, the voltage resistance and insulation performance of the common-mode inductor will be greatly reduced, thereby affecting the service life of the common-mode inductor. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a common-mode inductor product, which solves the technical problem that the service life of the common-mode inductor is reduced due to the influence of the external environment when it is in a naked state.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] An embodiment of the utility model provides a common-mode inductor product, including a common-mode inductor and a shell, wherein the shell includes an aluminum shell, an upper inner plate and an upper outer plate, the aluminum shell is provided with an installation slot for the common-mode inductor to be completely placed therein, the aluminum shell is filled with thermally conductive silicone rubber in the installation slot, the thermally conductive silicone rubber covers the common-mode inductor and contacts the inner wall of the installation slot, the upper inner plate abuts against one end of the aluminum shell where the installation slot is provided and seals the installation slot, the upper outer plate abuts against one end of the upper inner plate away from the aluminum shell, the upper outer plate is detachably connected to one end of the aluminum shell where the installation slot is provided and limits the upper inner plate, and the upper inner plate and the upper outer plate are provided with a first lead hole and a second lead hole for the lead wires of the common-mode inductor to be transmitted out.

[0009] A common-mode inductor product proposed in an embodiment of the utility model, the common-mode inductor is directly placed in a mounting slot of an aluminum housing, and then the leads on the common-mode inductor are passed through a first lead hole and a second lead hole in sequence, and then thermally conductive silicone rubber is poured into the mounting slot so that the thermally conductive silicone rubber completely fills the gap between the common-mode inductor and the inner wall of the mounting slot, and then the mounting slot is sealed by an upper inner plate, and finally the upper inner plate is fixed and limited by an upper outer plate and the aluminum housing. This solution effectively protects the common-mode inductor, reduces the probability of damage caused by external moisture or erosion, and can better protect the common-mode inductor. At the same time, the heat generated by the common-mode inductor during operation can be effectively transferred to the outside through the thermally conductive silicone rubber and the aluminum housing, which can effectively extend the service life of the common-mode inductor.

[0010] Optionally, the upper inner plate is sealed and fixed with a metal terminal in the first lead hole, one end of the metal terminal protrudes into the installation slot and is fixed to the lead of the common mode inductor, and the other end of the metal terminal protrudes to the second lead hole and is provided with a connecting screw connected to the outside.

[0011] By sealing and fixing the metal terminal in the first lead hole of the upper inner plate, the lead of the common-mode inductor can be directly connected to one end of the metal terminal, and the other end of the metal terminal protrudes into the second lead hole and is provided with a connecting screw, so that the external lead can be directly connected to the connecting screw. This solution makes it more convenient to install the common-mode inductor into the outer structure and to install the entire common-mode inductor on the circuit board.

[0012] Optionally, a positioning groove for the upper inner plate to be embedded in is formed on one end surface of the upper outer plate close to the aluminum shell.

[0013] By providing a positioning groove at one end surface of the upper outer plate, when installing the upper outer plate, it is only necessary to align the upper inner plate with the positioning groove and insert it to accurately install the upper outer plate, which is more convenient.

[0014] Optionally, the aluminum shell has fixing grooves at four corners of one end face of the installation slot, the aluminum shell has a card slot on the side wall of the fixing slot, the upper outer panel has fixing pins inserted into the fixing slots at the corners, and the side ends of the fixing pins are provided with card strips inserted into the card slots.

[0015] By opening fixing grooves at the four corners of the aluminum shell, when installing the upper outer panel, it is only necessary to insert the fixing pins around the upper outer panel into the fixing grooves, so that the side end clips of the fixing pins are inserted into the clip grooves, and the upper outer panel is fixed at this time. This solution makes the installation and fixation of the upper outer panel more convenient.

[0016] Optionally, the fixed plug is a cylinder, the fixed plug is rotatably connected to the upper outer plate, the two end openings of the slot extend to the adjacent two side end surfaces of the aluminum shell, and the clamping strip is inserted into the slot as the fixed plug rotates.

[0017] By rotating the fixed pin and connecting it to the upper outer panel, when the fixed pin is inserted into the fixed slot, the card strip is located at one side end of the aluminum shell of the fixed pin and aligned with the card slot. Then the fixed pin can be directly rotated to make the card strip slide directly into the card slot. After the operation of multiple fixed pins is completed, the upper outer panel is fixed. This solution makes the installation and fixation of the upper outer panel more convenient.

[0018] Optionally, a through hole is provided on the upper outer plate for the fixing pin to be inserted and rotated, and a limiting circular plate is provided at one end of the fixing pin, and the diameter of the limiting circular plate is larger than the diameters of the fixing pin and the through hole. When the fixing pin is inserted into the through hole, the limiting circular plate abuts against the end of the upper outer plate away from the aluminum shell, and a straight groove is provided in the middle of the end face of the limiting circular plate away from the fixing pin.

[0019] By setting the fixing pin and the upper outer panel separately, the upper outer panel is more convenient to produce. When installing the upper outer panel, you only need to align the fixing pin with the through hole and insert it so that the limiting circular plate abuts against one end surface of the upper outer panel. Then, the fixing pin is inserted into the fixing groove. At this time, the clamping strip is located at the side end of the fixing pin away from the aluminum shell and aligned with the clamping slot. Then, a flat-blade screwdriver or a similar tool is inserted into the flat-blade slot and rotated to allow the clamping strip to slide directly into the clamping slot, thereby completing the installation and fixation of the upper outer panel, making the entire installation process more convenient.

[0020] Optionally, the upper inner plate is abutted against one end surface of the aluminum outer shell and is provided with an upper groove, the upper inner plate is embedded with a sealing ring in the upper groove, and the aluminum outer shell is abutted against one end surface of the upper inner plate and is provided with a lower groove on the outer peripheral side of the installation slot for partially embedding the sealing ring, and the sealing ring is squeezed and deformed when the upper outer plate is installed.

[0021] An upper groove and a lower groove are respectively formed on one end surface where the upper inner plate and the aluminum outer shell are abutted against each other, and a sealing ring is embedded in the upper groove and the lower groove. When the designed upper outer plate is fixed to the aluminum outer shell, the sealing ring produces a deformation groove, thereby completing the sealing of the gap between the upper inner plate and the aluminum outer shell, so as to reduce the probability of water vapor and corrosive substances entering, thereby extending the service life of the common mode inductor.

[0022] Optionally, outer surfaces of the upper outer plate and the upper inner plate are coated with an insulating paint layer.

[0023] By coating an insulating paint layer on the outer edges of the upper outer plate and the upper inner plate, the influence of external factors penetrating the upper outer plate and the upper inner plate on the common mode inductor is further reduced, thereby extending the service life of the common mode inductor.

[0024] Optionally, the upper outer plate is provided with connecting flanges on the four sides thereof, and the connecting flanges are provided with connecting holes for connecting with the outside.

[0025] By arranging connecting flanges on the side ends of the upper outer plate and opening connecting holes on the connecting flanges, the entire outer structure can be directly connected and fixed to the circuit board, which is more convenient.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the utility model are as follows: in the common-mode inductor product of the utility model, the common-mode inductor is directly placed in the installation slot of the aluminum shell, and then the leads on the common-mode inductor are passed through the first lead hole and the second lead hole in sequence, and then thermally conductive silicone rubber is poured into the installation slot so that the thermally conductive silicone rubber completely fills the gap between the common-mode inductor and the inner wall of the installation slot, and then the installation slot is sealed by the upper inner plate, and finally the upper inner plate is fixed and limited by the upper outer plate and the aluminum shell. This scheme effectively protects the common-mode inductor, reduces the probability of it being damaged by external moisture or erosion, and can better protect the common-mode inductor. At the same time, the heat generated by the common-mode inductor when working can be effectively transferred to the outside through the thermally conductive silicone rubber and the aluminum shell. In summary, the service life of the common-mode inductor can be effectively extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0029] Figure 2 It is an explosion diagram of an embodiment of the utility model;

[0030] Figure 3 It is a cross-sectional view of an embodiment of the utility model.

[0031] [Description of Reference Numerals]

[0032] 1. Aluminum shell; 11. Installation slot; 12. Thermal conductive silicone rubber; 13. Lower groove; 14. Fixed groove; 15. Card slot; 2. Upper inner plate; 21. Upper groove; 22. Sealing ring; 23. First lead hole; 24. Metal terminal; 241. Connecting screw; 3. Upper outer plate; 31. Positioning groove; 32. Fixed plug; 33. Card strip; 34. Through hole; 35. Limiting circular plate; 351. Slotted groove; 36. Second lead hole; 37. Connecting convex edge; 371. Connecting hole; 4. Common mode inductor. DETAILED DESCRIPTION

[0033] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0034] The common-mode inductor product proposed in the embodiment of the utility model is directly placed in the installation slot of the aluminum shell, and then the leads on the common-mode inductor are passed through the first lead hole and the second lead hole in turn, and then thermal conductive silicone rubber is poured into the installation slot so that the thermal conductive silicone rubber completely fills the gap between the common-mode inductor and the inner wall of the installation slot, and then the installation slot is sealed by the upper inner plate, and finally the upper outer plate and the aluminum shell are fixed and limited by the upper inner plate. This solution effectively protects the common-mode inductor, reduces the probability of it being damaged by external moisture or erosion, and can better protect the common-mode inductor. At the same time, the heat generated by the common-mode inductor during operation can be effectively transferred to the outside through the thermal conductive silicone rubber and the aluminum shell. In summary, this appearance structure can effectively extend the service life of the common-mode inductor.

[0035] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] Reference Figure 1 and Figure 2 A common-mode inductor product includes a common-mode inductor 4 and a shell, wherein the shell includes an aluminum shell 1, an upper inner plate 2 and an upper outer plate 3.

[0037] See also Figure 2 and Figure 3 The aluminum housing 1 is provided with an installation slot 11 for completely placing the common-mode inductor 4. The aluminum housing 1 is filled with a thermally conductive silicone rubber 12 in the installation slot 11. The thermally conductive silicone rubber 12 covers the common-mode inductor 4 and contacts the inner wall of the installation slot 11. The heat generated by the common-mode inductor 4 during operation can be effectively transferred to the outside through the thermally conductive silicone rubber 12 and the aluminum housing 1, effectively reducing the heat accumulation generated by the common-mode inductor 4 working for a long time and extending its service life.

[0038] The upper inner plate 2 abuts against one end of the aluminum outer shell 1 where the installation slot 11 is opened and seals the installation slot 11. The upper outer plate 3 abuts against the end of the upper inner plate 2 away from the aluminum outer shell 1. The end surface of the upper outer plate 3 close to the aluminum outer shell 1 is provided with a positioning groove 31 for the upper inner plate 2 to be embedded. The upper outer plate 3 is detachably connected to the aluminum outer shell 1.

[0039] An upper groove 21 is formed on one end face of the upper inner plate 2 that abuts against the aluminum outer shell 1, and a sealing ring 22 is embedded in the upper groove 21. An end face of the aluminum outer shell 1 that abuts against the upper inner plate 2 is formed on the outer peripheral side of the mounting slot 11 with a lower groove 13 for partially embedding the sealing ring 22. The sealing ring 22 is squeezed and deformed when the upper outer plate 3 and the aluminum outer shell 1 are installed, thereby sealing the gap between the upper inner plate 2 and the aluminum outer shell 1.

[0040] The aluminum housing 1 is provided with a fixing groove 14 at each of the four corners of one end surface of the installation slot 11. The aluminum housing 1 is provided with a card slot 15 on the side wall of the fixing groove 14. A fixing plug 32 inserted into the fixing groove 14 is provided at the corner of the upper outer plate 3. A card strip 33 inserted into the card slot 15 is integrally formed at the side end of the fixing plug 32. The fixing plug 32 is a cylinder. A through hole 34 is provided on the upper outer plate 3 for the fixing plug 32 to be inserted and rotated. A limiting circular plate 33 is integrally provided at one end of the fixing plug 32. 5, the diameter of the limiting circular plate 35 is larger than the diameters of the fixed plug post 32 and the through hole 34, and the limiting circular plate 35 abuts against the end of the upper outer plate 3 away from the aluminum shell 1 when the fixed plug post 32 is inserted into the through hole 34, and the openings at both ends of the slot 15 extend to the adjacent two side end surfaces of the aluminum shell 1, and the clamping strip 33 is in an arc shape as a whole and is coaxial with the fixed plug post 32. The clamping strip 33 rotates with the fixed plug post 32 and is inserted into the slot 15, and a straight groove 351 is provided in the middle of the end surface of the limiting circular plate 35 away from the fixed plug post 32. When installing the upper outer panel 3, align the fixing pin 32 with the through hole 34 and insert it so that the limiting circular plate 35 abuts against one end surface of the upper outer panel 3. Then, the fixing pin 32 is inserted into the fixing groove 14. At this time, the clamping strip 33 is located at one side end of the fixing pin 32 away from the aluminum shell 1 and aligned with the clamping groove 15. Then, a flat-blade screwdriver or a similar tool is inserted into the flat-blade groove 351 and rotated to allow the clamping strip 33 to slide directly into the clamping groove 15, thereby completing the installation and fixation of the upper outer panel 3.

[0041] The upper inner plate 2 is provided with a plurality of first lead holes 23 connected to the mounting slot 11, and the upper outer plate 3 is provided with a plurality of second lead holes 36 aligned with the first lead holes 23. The upper inner plate 2 is sealed and fixed with a metal terminal 24 in the first lead hole 23. One end of the metal terminal 24 protrudes into the mounting slot 11 and is connected to the lead of the common mode inductor 4, and the other end of the metal terminal 24 protrudes into the second lead hole 36 and is threadedly connected with a connecting screw 241 connected to the outside.

[0042] The upper outer plate 3 is integrally provided with connecting flanges 37 at the sides thereof, and connecting holes 371 for connecting with the outside are provided on the connecting flanges 37. The entire outer structure can be directly connected and fixed with the circuit board, which is more convenient.

[0043] The outer surfaces of the upper outer plate 3 and the upper inner plate 2 are coated with an insulating paint layer, so as to further reduce the influence of external factors penetrating the upper outer plate 3 and the upper inner plate 2 on the common mode inductor 4, thereby extending the service life of the common mode inductor 4.

[0044] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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.

[0046] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0047] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A common mode inductor product, characterized in that: The invention comprises a common-mode inductor (4) and a shell, wherein the shell comprises an aluminum shell (1), an upper inner plate (2) and an upper outer plate (3); the aluminum shell (1) is provided with an installation slot (11) for completely placing the common-mode inductor (4); the aluminum shell (1) is filled with thermally conductive silicone rubber (12) in the installation slot (11); the thermally conductive silicone rubber (12) covers the common-mode inductor (4) and contacts the inner wall of the installation slot (11); the upper inner plate (2) abuts against the aluminum shell (1) ) is provided with one end of the installation slot (11) and the installation slot (11) is sealed, the upper outer plate (3) is in contact with one end of the upper inner plate (2) away from the aluminum shell (1), the upper outer plate (3) and the end of the aluminum shell (1) where the installation slot (11) is provided are detachably connected and limit the upper inner plate (2), and the upper inner plate (2) and the upper outer plate (3) are provided with a first lead hole (23) and a second lead hole (36) for the lead wire of the common mode inductor (4) to be transmitted out.

2. The common mode inductor product according to claim 1, characterized in that: The upper inner plate (2) is sealed and fixed with a metal terminal (24) in the first lead hole (23); one end of the metal terminal (24) protrudes into the installation slot (11) and is fixed to the lead of the common mode inductor (4); the other end of the metal terminal (24) protrudes into the second lead hole (36) and is provided with a connecting screw (241) connected to the outside.

3. The common mode inductor product according to claim 1, characterized in that: A positioning groove (31) for the upper inner plate (2) to be embedded is provided on one end surface of the upper outer plate (3) close to the aluminum shell (1).

4. The common mode inductor product according to claim 3, characterized in that: The aluminum housing (1) is provided with fixing grooves (14) at four corners of one end surface of the installation slot (11), and the aluminum housing (1) is provided with a clamping groove (15) on the side wall of the fixing groove (14). The upper outer plate (3) is provided with a fixing plug (32) inserted into the fixing groove (14) at the corner, and the side end of the fixing plug (32) is provided with a clamping strip (33) inserted into the clamping groove (15).

5. The common mode inductor product according to claim 4, characterized in that: The fixed plug post (32) is a cylinder, and the fixed plug post (32) is rotatably connected to the upper outer plate (3). The openings at both ends of the slot (15) extend to the adjacent two side end surfaces of the aluminum shell (1), and the clamping strip (33) is inserted into the slot (15) as the fixed plug post (32) rotates.

6. The common mode inductor product according to claim 5, characterized in that: The upper outer plate (3) is provided with a through hole (34) for the fixed plug post (32) to be inserted and rotated, and a limiting circular plate (35) is provided at one end of the fixed plug post (32). The diameter of the limiting circular plate (35) is larger than the diameters of the fixed plug post (32) and the through hole (34). When the fixed plug post (32) is inserted into the through hole (34), the limiting circular plate (35) abuts against the end of the upper outer plate (3) away from the aluminum shell (1), and a straight groove (351) is provided in the middle of the end surface of the limiting circular plate (35) away from the fixed plug post (32).

7. The common mode inductor product according to claim 1, characterized in that: The upper inner plate (2) is provided with an upper groove (21) on one end face of the aluminum outer shell (1), and a sealing ring (22) is embedded in the upper groove (21) of the upper inner plate (2). The aluminum outer shell (1) is provided with a lower groove (13) on the outer peripheral side of the installation slot (11) for partially embedding the sealing ring (22) on one end face of the upper inner plate (2), and the sealing ring (22) is squeezed and deformed when the upper outer plate (3) is installed.

8. The common mode inductor product according to claim 1, characterized in that: The outer surfaces of the upper outer plate (3) and the upper inner plate (2) are coated with an insulating paint layer.

9. The common mode inductor product according to claim 1, characterized in that: The upper outer plate (3) is provided with connecting flanges (37) on the four sides thereof, and the connecting flanges (37) are provided with connecting holes (371) for connecting with the outside.

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