A high-voltage multi-phase ring-shaped common-mode inductance shell partition base

Abstract

The utility model discloses a high pressure multiphase formula annular common mode inductance shell partition plate base relates to inductance technical field, including base, shell and partition plate, the top of base is provided with buckle structure and is set up wire hole, shell is annular structure and is formed with the chamber of accommodating magnetic core in the inside, is provided with winding retaining wall on the shell, is provided with the clamping groove on winding retaining wall, wherein, buckle structure can be with clamping groove joint cooperation, partition plate sets up in the inner ring space of shell and is inserted with winding retaining wall and cooperates, through winding retaining wall and separates multiple winding area in shell, and the shell is designed with the clamping groove on the winding retaining wall of itself, and the buckle structure on the base forms joint cooperation, so that only needs to aim at buckle structure with winding retaining wall when assembling, and adds pressure, can complete the assembling of both fast, installs the way of inserting with winding retaining wall cooperation to partition plate simultaneously, need not do too much operation, realizes the improvement of the assembling efficiency of annular common mode inductance.

Description

Technical Field

[0001] This utility model relates to the field of inductor technology, and in particular to a high-voltage multiphase toroidal common-mode inductor housing partition base. Background Technology

[0002] Toroidal common-mode inductors are widely used in power electronic equipment such as switching power supplies, frequency converters, and photovoltaic inverters due to their high core utilization and excellent electromagnetic interference suppression. In some toroidal common-mode inductor designs, an insulating shell is designed for the core, and multiple windings are wound on the shell to improve the insulation between the windings and the stability of the inductor operation. The core shell needs to be installed and fixed to the inductor base. In multiphase inductors, a partition is also added to the inner ring of the shell to separate the multiple windings to improve the insulation strength and meet the requirements of high-voltage applications.

[0003] However, in the existing technology, the housing and base of the toroidal common mode inductor are mostly fixed and assembled by a combination of insert type and glue bonding, which is inconvenient in assembly. Therefore, it is necessary to design a new type of integrated high-voltage multiphase common-mode inductor housing with a partition base. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage multiphase toroidal common-mode inductor housing partition base, comprising a base, a housing, and a partition; The base has a wire inlet hole, and the top surface of the base is provided with a buckle structure; The outer shell has a ring-shaped structure and an internal cavity for accommodating the magnetic core. The outer shell is provided with a winding baffle wall, and the winding baffle wall is provided with a slot. The snap-fit ​​structure can engage with the slot. The partition is disposed in the inner ring space of the outer shell and is inserted into the winding retainer wall, thereby dividing the outer shell into multiple winding areas through the winding retainer wall.

[0006] As a further embodiment of the present invention: the buckle structure includes a connecting base disposed on the top surface of the base, and a hook is provided at the upper end of the connecting base, which can be engaged with the slot. Among them, the connecting matrix can undergo elastic deformation.

[0007] As a further embodiment of the present invention: the outer shell includes an upper shell and a lower shell; The winding retaining wall includes an upper retaining wall disposed on the outer peripheral surface of the upper shell, and the slot is formed on the upper retaining wall.

[0008] As a further embodiment of this utility model: the winding retaining wall also includes a lower retaining wall disposed on the outer peripheral surface of the lower shell, and the upper retaining wall and the lower retaining wall are respectively provided with an upper limit groove and a lower limit groove that match the connecting base, and the connecting base is inserted into and fitted into the upper limit groove and the lower limit groove.

[0009] As a further embodiment of this utility model: the partition is provided with a slanted locking block, the upper baffle is connected to an upper insertion block located on the inner side of the upper shell, the upper insertion block is provided with an upper slot, and when the partition is inserted into the upper slot, the slanted locking block can pass through the upper slot.

[0010] As a further embodiment of this utility model: a positioning block is provided at the lower end of the upper retaining wall, and a positioning groove is provided on the inner wall of the lower limiting groove.

[0011] As a further embodiment of this utility model: the upper end of the lower shell is provided with a flange, and the inner wall of the lower end of the upper shell is provided with a groove corresponding to the flange, and the flange and the groove are fitted together.

[0012] As a further embodiment of this utility model: a convex ring is provided on the surface of the flange, and a concave ring is provided on the inner wall of the groove.

[0013] As a further embodiment of this utility model: the lower retaining wall is connected to a lower insertion block located on the inner side of the lower shell, the lower insertion block is provided with a lower slot, and the bottom end of the partition plate is inserted into the lower slot.

[0014] As a further embodiment of this utility model: a support wall is provided on the bottom surface of the lower shell, the support wall is connected to the lower retaining wall and the lower insertion block, and the support wall is in contact with the surface of the base.

[0015] Compared with the existing technology, the beneficial effects of this technical solution are as follows: the outer shell, through the slot design on its own winding retainer wall, forms a snap-fit ​​with the snap-fit ​​structure on the base, so that during assembly, only the winding retainer wall needs to be aligned with the snap-fit ​​structure and pressure is applied to quickly complete the assembly and fixation of the two. This method replaces the traditional plug-in and glue-fit fixation. At the same time, the partition is installed by plugging in with the winding retainer wall, without the need for many operations, thereby improving the assembly efficiency of the toroidal common mode inductor. The device features four snap-fit ​​structures and four winding retainers. When the outer shell is assembled onto the base, the four snap-fit ​​structures and four winding retainers work together to quickly center the outer shell onto the base. The partition is designed in a cross shape to fit the four winding retainers, which can evenly divide the area on the outer shell into four winding zones.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view structural diagram of this utility model; Figure 3 This is an exploded structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the base of this utility model; Figure 5 This is a schematic diagram of the structure of the outer shell of this utility model; Figure 6 This is a schematic diagram of the upper shell of this utility model; Figure 7 This is a schematic diagram of the lower shell of this utility model; Figure 8 This is a schematic diagram of the structure of the partition of this utility model; The corresponding labels in the attached diagram are explained as follows: 1. Base; 11. Cable inlet hole; 12. Snap-fit ​​structure; 121. Connecting base; 122. Hook; 2. Outer shell; 21. Upper shell; 211. Groove; 212. Concave ring; 22. Lower shell; 221. Flange; 222. Protruding ring; 3. Partition; 31. Angled locking block; 4. Winding retainer wall; 41. Slot; 42. Upper retainer wall; 421. Upper limit slot; 422. Positioning block; 423. Upper insertion block; 424. Upper slot; 43. Lower retainer wall; 431. Lower limit slot; 432. Positioning slot; 433. Lower insertion block; 434. Lower slot; 435. Support wall; 5. Boss; 6. Foot position identification notch. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-8 A high-voltage multiphase toroidal common-mode inductor housing partition base includes a base 1, a housing 2, and a partition 3; The base 1 has a wire inlet hole 11 and a buckle structure 12 on the top surface of the base 1. The outer shell 2 has a ring structure and a cavity for accommodating the magnetic core is formed inside. The outer shell 2 is provided with a winding baffle 4 and a slot 41 is provided on the winding baffle 4. The snap-fit ​​structure 12 can be engaged with the slot 41. The partition 3 is disposed in the inner ring space of the outer shell 2 and is inserted and engaged with the winding retainer 4, thereby dividing the outer shell 2 into multiple winding areas through the winding retainer 4.

[0021] Specifically, the magnetic core is accommodated in the annular cavity formed inside the outer shell 2. The outer shell 2 is fixed to the base 1 by the snap-fit ​​structure 12 on the base 1 and the snap-fit ​​groove 41 of the winding baffle 4 of the outer shell 2 to form a stable assembly. The setting of the winding baffle 4 separates the winding areas of multiple coils on the outer shell 2, thereby clarifying the winding range of each coil and avoiding contact between adjacent coils. The partition 3 is set in the inner ring of the outer shell 2 and provides insulation between each coil by being fixed by the insertion of the winding baffle 4. The lead wires of each coil are led out through the wire inlet hole 11 on the base 1. In summary, the outer casing 2, through the slot 41 design on its own winding retainer 4, forms a snap-fit ​​engagement with the snap-fit ​​structure 12 on the base 1. This allows for quick assembly and fixation of the two components simply by aligning the winding retainer 4 with the snap-fit ​​structure 12 and applying pressure. This method replaces the traditional plug-in and glued fixing. Meanwhile, the partition 3 is installed by plugging into the winding retainer 4, requiring no further operations and thus improving the assembly efficiency of the toroidal common mode inductor. The snap-fit ​​structure 12 and the winding retainer wall 4 are provided in four ways. When the outer shell 2 is assembled on the base 1, the four snap-fit ​​structures 12 and the four winding retainer walls 4 can make the outer shell 2 quickly centered on the base 1. The partition 3 is designed in a cross shape and is compatible with the four winding retainer walls 4, which can evenly divide the area on the outer shell 2 into four winding areas.

[0022] Based on the above embodiments, it is further proposed that the buckle structure 12 includes a connecting base 121 disposed on the top surface of the base 1, and a hook 122 is disposed at the upper end of the connecting base 121, which can be engaged with the slot 41. Among them, the connecting substrate 121 can undergo elastic deformation.

[0023] Specifically, four connecting bases 121 are arranged in a square on the base 1. The hooks 122 on the four connecting bases 121 all face inward and have a beveled design at the upper end. When the outer shell 2 is placed on the base 1, the pressure point of the outer surface of the winding retaining wall 4 acts on the bevel at the upper end of the hook 122, causing the connecting base 121 to deform outward and allowing the outer shell 2 to enter between the four connecting bases 121. After the slot 41 and the hook 122 are aligned, the connecting base 121 elastically recovers and the hook 122 engages with the slot 41, thereby fixing the outer shell 2 to the base 1. When it is necessary to disassemble the outer shell 2, press the connecting base 121 to deform it, so that the hook 122 can be disengaged from the slot 41, and the outer shell 2 can be taken out. This makes it convenient to assemble and disassemble the outer shell 2.

[0024] Based on the above embodiments, it is further proposed that the outer shell 2 includes an upper shell 21 and a lower shell 22; The winding retainer wall 4 includes an upper retainer wall 42 disposed on the outer peripheral surface of the upper shell 21, and a slot 41 is formed on the upper retainer wall 42.

[0025] Specifically, the magnetic core can be placed into the internal space of the lower shell 22 first, and then the upper shell 21 and the lower shell 22 can be assembled. Then, the upper shell 21 and the lower shell 22 can be assembled together with the base 1. Since the slot 41 is opened in the upper baffle 42 of the upper shell 21, when the hook 122 is engaged and fixed with the slot 41, the hook 122 is responsible for fixing the upper shell 21, while the upper shell 21 restricts the position of the lower shell 22, so that the upper shell 21 and the lower shell 22 are kept in an assembled and fixed state. Therefore, there is no need to set up a separate connection structure between the upper shell 21 and the lower shell 22, which optimizes the assembly operation. At the same time, after the outer shell 2 is removed from the base 1, the upper shell 21 and the lower shell 22 can be quickly separated, which is convenient for replacing or repairing the internal magnetic core.

[0026] Furthermore, the winding retaining wall 4 also includes a lower retaining wall 43 disposed on the outer peripheral surface of the lower shell 22. The upper retaining wall 42 and the lower retaining wall 43 are respectively provided with an upper limit groove 421 and a lower limit groove 431 that match the connecting base 121. The connecting base 121 is inserted into and fitted into the upper limit groove 421 and the lower limit groove 431.

[0027] Specifically, the winding retaining wall 4 consists of an upper retaining wall 42 and a lower retaining wall 43. Upper retaining groove 421 and lower retaining groove 431 are respectively provided on the upper retaining wall 42 and the lower retaining wall 43. While the hook 122 on the connecting base 121 is engaged and fixed with the slot 41, the connecting base 121 itself is synchronously inserted and cooperated with the upper retaining groove 421 and the lower retaining groove 431, thereby limiting the directional displacement of the upper shell 21 and the lower shell 22, and preventing the upper shell 21 and the lower shell 22 from rotating during use, causing synchronous twisting of the coil winding, which in turn pulls the lead wire and causes failures such as desoldering at the connection with the PCB board.

[0028] Furthermore, a positioning block 422 is provided at the lower end of the upper retaining wall 42, and a positioning groove 432 is provided on the inner wall of the lower limit groove 431. By using the positioning block 422 and the positioning groove 432, the upper shell 21 and the lower shell 22 can be precisely aligned during assembly.

[0029] Furthermore, the lower shell 22 is provided with a flange 221 at its upper end, and the inner wall of the lower end of the upper shell 21 is provided with a groove 211 corresponding to the flange 221, and the flange 221 and the groove 211 are fitted together.

[0030] Specifically, when the upper shell 21 and the lower shell 22 are assembled, the mutual engagement of the flange 221 and the groove 211 can make the mating surfaces of the upper shell 21 and the lower shell 22 flat, while increasing the connection area between the upper shell 21 and the lower shell 22, making the assembly state of the two more stable.

[0031] Preferably, a convex ring 222 is provided on the surface of the flange 221, and a concave ring 212 is provided on the inner wall of the groove 211. The convex ring 222 is deformed by compression during the assembly process and eventually embeds into the concave ring 212 on the inner wall of the groove 211, thereby increasing the force required to separate the upper shell 21 and the lower shell 22 and preventing the two from disintegrating during the assembly of the upper shell 21 and the lower shell 22 onto the base 1.

[0032] Based on the above embodiments, it is further proposed that the partition 3 is provided with a slanted locking block 31, and the upper baffle 42 is connected to an upper insertion block 423 located on the inner side of the upper shell 21. The upper insertion block 423 is provided with an upper slot 424. When the partition 3 is inserted into the upper slot 424, the slanted locking block 31 can pass through the upper slot 424. The slanted locking block 31 is made of a deformable material.

[0033] Specifically, the width of the partition 3 is slightly lower than that of the upper slot 424. During the process of inserting the partition 3 into the upper slot 424, the inclined block 31 gradually enters and passes through the upper slot 424 through the deformation of the inclined surface, and returns to its original shape after passing through the upper slot 424. The upper surface of the inclined block 31 is flat, and after the shape is restored, it will be blocked by the upper insertion block 423. At this time, the bottom end of the partition 3 abuts against the surface of the base 1, thereby fixing the partition 3 in the inner ring space of the outer shell 2.

[0034] Furthermore, the lower retaining wall 43 is connected to a lower insertion block 433 located on the inner side of the lower shell 22. The lower insertion block 433 has a lower slot 434. The bottom end of the partition 3 is inserted into the lower slot 434. The insertion of the bottom end of the partition 3 into the lower slot 434 can ensure that the partition 3 remains vertical and prevent it from tilting.

[0035] Furthermore, a support wall 435 is provided on the bottom surface of the lower shell 22. The support wall 435 connects the lower baffle wall 43 and the lower insertion block 433, and the support wall 435 is in contact with the surface of the base 1.

[0036] Specifically, the function of the support wall 435 is to create a spatial gap between the lower shell 22 and the surface of the base 1, so that after the coil is wound on the outer shell 2, it forms an air convection channel with the base 1, allowing the coil to have more heat dissipation space.

[0037] Preferably, a boss 5 is provided on the lower end face of the base 1. The boss 5 can raise the base 1 to form an air convection channel with the PCB board, and at the same time ensure the stability of the base 1 after assembly.

[0038] Preferably, the base 1 has a pin identification notch 6. The pin identification notch 6 can play a role in preventing mistakes and positioning calibration during inductor assembly to avoid assembly errors.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-voltage multiphase toroidal common-mode inductor housing partition base, characterized in that, Includes a base (1), an outer shell (2), and a partition (3); The base (1) is provided with a wire inlet hole (11), and the top surface of the base (1) is provided with a buckle structure (12). The outer shell (2) has a ring structure and a cavity for accommodating the magnetic core is formed inside. A winding baffle (4) is provided on the outer shell (2), and a slot (41) is provided on the winding baffle (4). The snap-fit ​​structure (12) can be engaged with the slot (41). The partition (3) is disposed in the inner ring space of the outer shell (2) and is inserted into the winding retainer (4), thereby dividing the outer shell (2) into multiple winding areas through the winding retainer (4).

2. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 1, characterized in that, The buckle structure (12) includes a connecting base (121) disposed on the top surface of the base (1), and a hook (122) is provided at the upper end of the connecting base (121), which can engage with the slot (41); Among them, the connecting matrix (121) can produce elastic deformation.

3. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 2, characterized in that, The outer shell (2) includes an upper shell (21) and a lower shell (22); The winding retaining wall (4) includes an upper retaining wall (42) disposed on the outer peripheral surface of the upper shell (21), and the slot (41) is formed on the upper retaining wall (42).

4. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 3, characterized in that, The winding retaining wall (4) also includes a lower retaining wall (43) disposed on the outer peripheral surface of the lower shell (22). The upper retaining wall (42) and the lower retaining wall (43) are respectively provided with an upper limit groove (421) and a lower limit groove (431) matching the connecting base (121). The connecting base (121) is inserted into the upper limit groove (421) and the lower limit groove (431).

5. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 4, characterized in that, The partition (3) is provided with a slanted locking block (31), and the upper baffle (42) is connected to an upper insertion block (423) located on the inner side of the upper shell (21). The upper insertion block (423) is provided with an upper slot (424). When the partition (3) is inserted into the upper slot (424), the slanted locking block (31) can pass through the upper slot (424).

6. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 4, characterized in that, The lower end of the upper retaining wall (42) is provided with a positioning block (422), and the inner wall of the lower limiting groove (431) is provided with a positioning groove (432).

7. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 6, characterized in that, The lower shell (22) is provided with a flange (221) at its upper end, and the inner wall of the lower end of the upper shell (21) is provided with a groove (211) corresponding to the flange (221). The flange (221) and the groove (211) fit together.

8. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 7, characterized in that, The flange (221) surface is provided with a convex ring (222), and the inner wall of the groove (211) is provided with a concave ring (212).

9. The high voltage multiphase toroid-shaped common-mode choke housing spacer base of claim 5, wherein, The lower retaining wall (43) is connected to a lower insertion block (433) located on the inner side of the lower shell (22). The lower insertion block (433) has a lower slot (434) and the bottom end of the partition (3) is inserted into the lower slot (434).

10. The high-voltage multiphase toroidal common-mode inductor housing partition base according to claim 9, characterized in that, The bottom surface of the lower shell (22) is provided with a support wall (435), which connects the lower baffle (43) and the lower insert block (433), and the support wall (435) is in contact with the surface of the base (1).

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