Combinable inductors and methods of using the same

Abstract

The application provides a combinable inductor and a use method thereof, relates to the technical field of power electronic components, and comprises a winding frame, a coil, an inductor shell and a mounting base, the coil is wound on the winding frame, the winding frame and the coil are both mounted in the inductor shell, and the inductor shell is detachably mounted on the mounting base; a plurality of plug-in positioning holes are formed in the winding frame, a plurality of positioning pins are further mounted on the winding frame, the plurality of positioning pins are arranged in one-to-one correspondence with the plurality of plug-in positioning holes, and the diameter of the positioning pin is the same as the inner diameter of the plug-in positioning hole. The application provides a combinable inductor and a use method thereof, adopts a double fixing structure that is composed of a pressing type locking mechanism and a positioning mechanism, and is combined with a detachable mounting base design, so that the technical problems of traditional combinable inductors, such as easy loosening, disengagement, center line deviation in a vibrating environment, easy impurity entering in a splicing seam, inconvenience in assembling and disassembling, inductance drift, and high-frequency suppression capacity reduction, are solved.

Description

Technical Field

[0001] This invention relates to the field of power electronic components, and in particular to a combinable inductor and its usage method. Background Technology

[0002] As power electronics technology advances towards higher frequencies, smaller sizes, and higher power densities, combined inductors are gradually replacing discrete inductors as the mainstream choice due to their ability to integrate common-mode / differential-mode rejection and multi-phase power supply functions. These inductors combine multiple coil windings with a magnetic core to achieve shared magnetic circuitry or functional integration, effectively reducing device size and board area, thus meeting the lightweight requirements of modern electronic devices.

[0003] Traditional modular inductors have inherent defects in their structural design and assembly methods, which may lead to frequent problems such as loosening, detachment, and center line misalignment in practical applications, seriously affecting circuit stability and equipment reliability. For example, existing modular inductors mostly adopt a split winding frame and base assembly structure (as described in patent CN204407162U), fixing the magnetic core and windings by clips, tape wrapping, or simple bonding. In vibration environments (such as outdoor energy storage equipment transportation and vehicle driving), the fastening structure is prone to failure due to mechanical fatigue, resulting in loosening of the magnetic core laminations and separation of the windings from the frame, causing inductance drift of more than ±20%, and a significant decrease in high-frequency suppression capability (e.g., insertion loss at 10MHz drops from 30dB to 10dB). In addition, if a molded inductor lacks reliable mechanical support, it may also suffer from open circuit defects due to external impacts, such as solder joint detachment or magnetic core displacement. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes a combinable inductor and its usage method.

[0005] The present invention proposes a combinable inductor, comprising a winding frame, a coil, an inductor housing, and a mounting base. The coil is wound on the winding frame, and both the winding frame and the coil are installed inside the inductor housing. The inductor housing is detachably mounted on the mounting base.

[0006] The winding frame is provided with multiple insertion positioning holes, and multiple positioning pins are also installed on the winding frame. The multiple positioning pins are set one-to-one with the multiple insertion positioning holes. The diameter of the positioning pin is the same as the inner diameter of the insertion positioning hole. A press-type locking mechanism is provided in the insertion positioning hole. The press-type locking mechanism can fix the position of the positioning pin in the insertion positioning hole.

[0007] The inductor housing is provided with a positioning mechanism, which is used to fix the position of the positioning pin on the inductor housing. The positioning mechanism can also seal the splicing seam between two adjacent inductor housings.

[0008] Preferably, the press-type locking mechanism includes a locking pin, a chuck, elastic pieces, and arc-shaped abutments; one end of the locking pin is connected to one end of the positioning pin, the diameter of the locking pin is smaller than the diameter of the positioning pin, the chuck is connected to the end of the locking pin away from the positioning pin, the diameter of the chuck is the same as the diameter of the positioning pin, the bottom outer edge of the chuck is chamfered, there are multiple elastic pieces, a locking groove communicating with the insertion positioning hole is opened in the inductor housing, multiple elastic pieces are arranged in a ring in the locking mechanism, the number of arc-shaped abutments is the same as the number of elastic pieces and they are arranged one-to-one, the arc-shaped abutments are connected to the side where the elastic pieces are close together, the chamfered arc surface of the bottom edge of the chuck slides in cooperation with the inclined surface of the arc-shaped abutments, and the arc-shaped abutments can abut against the end face of the chuck near the locking pin.

[0009] Preferably, the chuck has a groove on the side near the locking pin, and the arc-shaped locking buckle can be engaged in the groove.

[0010] Preferably, the press-type locking mechanism further includes an arc-shaped ring sleeve and a return spring; the arc-shaped ring sleeve is slidably fitted onto the locking pin, the outer edge of the arc-shaped ring sleeve is chamfered, the chamfered arc surface of the outer edge of the arc-shaped ring sleeve slides in cooperation with the arc-shaped abutment, and the end of the positioning pin near the locking pin is a conical section, and the small diameter end of the conical section is connected to the locking pin.

[0011] The positioning pin has a boss on its outer periphery, and the inductor housing has a limiting groove that slides with the boss. The return spring is located in the limiting groove, and both ends of the return spring abut against the inner wall of the boss and the limiting groove, respectively.

[0012] Preferably, the positioning mechanism includes a protective cover and a positioning component; the protective cover is slidably fitted onto the inductor housing, a crossbar is connected between the protective cover and the positioning pin, and an adjustment groove is provided on the inductor housing to slide with the crossbar;

[0013] The number of positioning components is at least two, and the two positioning components are respectively used for the position of the protective cover on two adjacent inductor shells.

[0014] Preferably, the positioning component includes a fixing pin, a fixing spring, and a retraction drive; the inner wall of the protective cover has a receiving hole for receiving the fixing pin, the fixing pin is slidably installed in the receiving hole, one side of the inductor housing has a positioning hole adapted to the fixing pin, the fixing spring is installed in the receiving hole, and the two ends of the fixing spring abut against the end of the fixing pin and the inner wall of the end of the receiving hole, respectively.

[0015] The retraction drive is used to drive the fixing pin to retract into the receiving hole.

[0016] Preferably, the retraction drive component includes a door-shaped pressing component, a trapezoidal block, and a lifting spring; the upper and lower sides of the protective cover are provided with movable sliding grooves that slide with the door-shaped pressing component; the trapezoidal block is fixedly connected to one side of the vertical section of the door-shaped pressing component; a through hole is provided on the fixing pin; the trapezoidal block passes through the through hole on the fixing pin; and the inclined surface of the trapezoidal block can slide with the inner wall of the through hole.

[0017] The lifting spring is located inside the movable slide groove, and both ends of the lifting spring abut against the inner wall of the movable slide groove and the transverse section of the door-shaped pressing member, respectively.

[0018] A method of using a combinable inductor includes the following steps:

[0019] S1. Basic assembly of a single inductor: Wind the coil into the winding slot of the winding frame to complete the pre-assembly of the coil and the winding frame; place the pre-assembled winding frame and coil into the inductor housing, aligning the center hole of the winding frame with the magnetic core assembly position inside the inductor housing; then detachably fix the inductor housing to the mounting base to complete the basic assembly of a single inductor.

[0020] S2. Combination of multiple inductors: According to the actual circuit requirements, select several inductors that have completed basic assembly, align the positioning pin on the winding frame of one inductor with the insertion positioning hole on the winding frame of the adjacent inductor, push the positioning pin into the corresponding insertion positioning hole, until the press-type locking mechanism completes the locking and fixing of the positioning pin.

[0021] S3. Overall positioning and seam sealing: Operate the positioning mechanism on the inductor housing to fix the positioning pin on the inductor housing. At the same time, use the positioning mechanism to seal the seam between two adjacent inductor housings to complete the assembly of multiple inductors.

[0022] Preferably, the specific operations of the pressing locking mechanism in step S to lock the positioning pin include:

[0023] S21. When the positioning pin is inserted into the positioning hole, the positioning pin drives the locking pin and the chuck to move synchronously. The chamfered arc surface at the bottom of the chuck slides and engages with the inclined surface of the arc-shaped locking buckle, pushing multiple arc-shaped locking buckles to move away from each other, thereby squeezing the elastic sheet to cause it to undergo elastic deformation.

[0024] S22. When the chuck moves to the point where the arc-shaped locking buckle is aligned with the end face of the chuck near the locking pin, the elastic sheet restores its elastic deformation, causing the arc-shaped locking buckle to reset and abut against the end face of the chuck, thereby achieving the locking and fixing of the chuck with the insertion positioning hole, and thus completing the locking of the positioning pin.

[0025] S23. When the positioning pin needs to be removed, press the positioning pin. The end of the positioning pin pushes the arc-shaped ring sleeve to move towards the arc-shaped locking buckle. The chamfered arc surface of the arc-shaped ring sleeve pushes the arc-shaped locking buckle away from each other. When the arc-shaped locking buckle is flush with the end face of the arc-shaped ring sleeve, the elastic sheet restores its elastic deformation, causing the arc-shaped locking buckle to reset and abut against the outer arc surface of the top of the arc-shaped ring sleeve. Then lift the positioning pin. Since the arc-shaped locking buckle is stuck in the arc-shaped ring sleeve, the arc-shaped ring sleeve slides down along the locking pin until the arc-shaped ring sleeve abuts against the chuck. The outer arc surface of the top of the arc-shaped ring sleeve slides and engages with the lower arc surface of the arc-shaped locking buckle, driving the arc-shaped locking buckle away from each other. Simultaneously, the arc-shaped ring sleeve and the chuck are removed, completing the disassembly.

[0026] Preferably, the operation of the positioning mechanism in step S3 includes:

[0027] S31. After the multiple inductors are spliced, slide the protective cover along the adjustment groove on the inductor shell. The protective cover moves the positioning pin through the crossbar, so that the positioning pin is tightly against the inner wall of the inductor shell, thus achieving the initial fixation of the positioning pin.

[0028] S32. When the protective cover moves to the preset position, the fixing pin in the positioning component pops out under the elastic force of the fixing spring and is inserted into the positioning hole on the inductor shell, thus completing the fixing of the protective cover and the inductor shell, and finally realizing the final positioning of the positioning pin.

[0029] S33. When the positioning mechanism needs to be unlocked, press the door-shaped pressing part of the compression drive component. The door-shaped pressing part drives the trapezoidal block to move. The inclined surface of the trapezoidal block slides and engages with the inner wall of the perforation, pushing the fixing pin into the storage hole of the protective cover, releasing the locking pin from the positioning hole. At this time, the positioning mechanism can be reset by sliding the protective cover in the opposite direction, and the splicing seam of the adjacent inductor shell will be exposed.

[0030] The present invention proposes a combinable inductor and its usage method, which has the following beneficial effects: It adopts a dual fixing structure combining a press-type locking mechanism and a positioning mechanism, combined with a detachable mounting base design, solving the technical problems of traditional combinable inductors such as easy loosening, detachment, and centerline misalignment under vibration, as well as the easy entry of impurities into the splicing seams, inconvenient assembly and disassembly, inductance drift, and decreased high-frequency suppression capability; through the precise cooperation of the positioning pin and the insertion positioning hole, combined with the elastic locking effect of the press-type locking mechanism, it achieves rapid and stable combination of multiple inductors, and the dual fixing structure ensures... The combined inductor's structural stability effectively prevents loosening and displacement even under high-frequency vibration environments. The protective cover not only provides secondary fixation for the positioning pins but also seals the splicing seams, providing excellent protection and extending the inductor's lifespan. The detachable mounting base and convenient disassembly mechanism design allow for repeated assembly and disassembly of the inductor unit, improving the inductor's reusability and maintenance convenience. At the same time, the modular design enhances the inductor's adaptability in different circuit scenarios, meeting the demands of modern power electronics technology for high-frequency, miniaturized, high-power-density, and flexible combination of inductors. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a combinable inductor proposed in this invention;

[0032] Figure 2 This is a cross-sectional view of a single inductor in a composable inductor proposed in this invention;

[0033] Figure 3 This is a cross-sectional view of multiple inductors spliced ​​together in a composable inductor proposed in this invention;

[0034] Figure 4 This is a schematic diagram of the structure of a single inductor in a composable inductor proposed in this invention;

[0035] Figure 5 This is a schematic diagram of the structure of the protective cover and positioning pin in a combinable inductor proposed in this invention;

[0036] Figure 6 This is a schematic diagram of the positioning pin structure in a combinable inductor proposed in this invention;

[0037] Figure 7 This invention proposes a combinable inductor Figure 2 Enlarged view of point A in the middle;

[0038] Figure 8 This invention proposes a combinable inductor Figure 3 Enlarged view at point B in the middle;

[0039] Figure 9This is a schematic diagram of the structure of the elastic sheet and the arc-shaped clamp in a combinable inductor proposed in this invention;

[0040] Figure 10 This is a schematic diagram of the structure of a gate-shaped pressing element and a trapezoidal block in a combinable inductor proposed in this invention;

[0041] Figure 11 This is a schematic diagram of the fixed pin structure in a combinable inductor proposed in this invention.

[0042] In the diagram: 1. Winding frame; 2. Coil; 3. Inductor housing; 4. Mounting base; 5. Insertion positioning hole; 6. Positioning pin; 7. Locking pin; 8. Chuck; 9. Elastic sheet; 10. Arc-shaped clamping buckle; 11. Arc-edged ring; 12. Return spring; 13. Protective cover; 14. Fixing pin; 15. Fixing spring; 16. Positioning hole; 17. Door-shaped pressing component; 18. Trapezoidal block; 19. Lifting spring. Detailed Implementation

[0043] Reference Figures 1-11This invention proposes a combinable inductor, comprising a winding frame 1, a coil 2, an inductor housing 3, and a mounting base 4. These components work together to achieve both independent functionality of a single inductor and combined expansion functionality of multiple inductors. The coil 2 is wound on the winding frame 1, and both the winding frame 1 and the coil 2 are mounted inside the inductor housing 3. The inductor housing 3 is detachably mounted on the mounting base 4 (not shown in the magnetic core diagram). Each inductor unit can be used independently or flexibly combined according to actual circuit requirements, breaking the limitations of traditional integrally molded or discrete inductors and greatly improving the inductor's adaptability in different circuit scenarios. The winding frame 1 has multiple insertion positioning holes 5 and multiple positioning pins 6, each corresponding to a specific insertion positioning hole 5. The diameter of the positioning pin 6 is the same as the inner diameter of the insertion positioning hole 5. By inserting the positioning pin 6 into the insertion positioning hole 5, seamless connection is ensured when two adjacent winding frames 1 are combined, effectively preventing centerline misalignment during the combination process. The issue of centerline misalignment is a significant cause of inductance drift and high-frequency performance degradation in traditional composite inductors. A press-lock mechanism is installed within the insertion positioning hole 5 to fix the position of the positioning pin 6 within the hole 5. A positioning mechanism is also installed on the inductor housing 3 to fix the position of the positioning pin 6 on the inductor housing 3. This positioning mechanism also seals the seam between adjacent inductor housings 3. In practical use, the press-lock mechanism within the insertion positioning hole 5 quickly fixes the position of the positioning pin 6 after insertion, eliminating the need for additional fastening tools, simplifying the assembly process, and ensuring reliable fixation. The positioning mechanism on the inductor housing 3 not only further fixes the position of the positioning pin 6 on the inductor housing 3, creating a double fixing effect, but also seals the seam between adjacent inductor housings 3, preventing external dust, moisture, and other impurities from entering the inductor and corroding the coil 2 and magnetic core, thus extending the inductor's lifespan.

[0044] The press-type locking mechanism includes a locking pin 7, a chuck 8, an elastic plate 9, and an arc-shaped locking buckle 10. One end of the locking pin 7 is connected to one end of the positioning pin 6. The diameter of the locking pin 7 is smaller than the diameter of the positioning pin 6, ensuring a space foundation for the subsequent installation and locking of the chuck 8. The chuck 8 is connected to the end of the locking pin 7 away from the positioning pin 6. The diameter of the chuck 8 is the same as the diameter of the positioning pin 6, ensuring that the chuck 8 can form a continuous force-bearing surface with the positioning pin 6, avoiding stress concentration during insertion or locking. The bottom outer edge of the chuck 8 is chamfered. The elastic plate 9 has several... The inductor housing 3 has a locking groove that communicates with the insertion positioning hole 5. Multiple elastic pieces 9 are arranged in a ring within the locking mechanism. The number of arc-shaped locking buckles 10 is the same as the number of elastic pieces 9 and they are arranged in a one-to-one correspondence. The arc-shaped locking buckles 10 are connected to the side where the elastic pieces 9 are close together. The elastic pieces 9 have good elastic recovery performance, and their ring array arrangement ensures a uniform distribution of locking force on the chuck 8, preventing deformation of the chuck 8 or positioning pin 6 due to excessive local force. Simultaneously, the uniform locking force effectively prevents the positioning pin 6 from loosening during use. The chamfered arc surface of the bottom edge of the chuck 8 slides in conjunction with the inclined surface of the arc-shaped locking buckle 10, reducing the friction between the chuck 8 and the arc-shaped locking buckle 10 when the chuck 8 is inserted, making the insertion process smoother and reducing assembly difficulty. The arc-shaped locking buckle 10 can abut against the end face of the chuck 8 near the locking pin 7. In addition, when the positioning pin 6 drives the chuck 8 to be inserted, the chamfered arc surface will slide along the inclined surface of the arc-shaped locking buckle 10, thereby pushing multiple arc-shaped locking buckles 10 to move away from each other, squeezing the elastic piece 9 to cause it to elastically deform. When the chuck 8 moves to the preset position, that is, the arc-shaped locking buckle 10 and the locking pin 7 are in contact, the chuck 8 is inserted into the locking pin 8. When the end face of the chuck 8 is aligned with the side of the pin 7, the elastic plate 9 will drive the arc-shaped locking buckle 10 to reset under its own elastic restoring force, so that the arc-shaped locking buckle 10 tightly abuts against the end face of the chuck 8, realizing the locking and fixing of the chuck 8 and the insertion positioning hole 5, thereby completing the locking of the positioning pin 6. No additional fastening parts such as screws and buckles are needed, making the operation convenient and the locking efficiency high. Moreover, the continuous elastic force provided by the elastic plate 9 can ensure the stability of the locking state. Even in a high-frequency vibration environment, it can effectively prevent gaps or loosening between the positioning pin 6 and the insertion positioning hole 5.

[0045] A groove is provided on the side of the chuck 8 near the pin 7, and the arc-shaped locking buckle 10 can be inserted into the groove. To further improve the stability of the locking structure, a groove is provided on the side of the chuck 8 near the pin 7, and the arc-shaped locking buckle 10 can be inserted into the groove. When the arc-shaped locking buckle 10 is reset, its end will be embedded in the groove to form a mechanical interlocking structure. Compared with simple end face abutment, this interlocking fixation can effectively prevent the chuck 8 from shifting in the axial direction, further enhance the locking effect, avoid locking failure caused by long-term use or severe vibration, thereby ensuring the stability of the inductance of the combined inductor and reducing the occurrence of inductance drift.

[0046] The press-type locking mechanism also includes an arc-shaped ring sleeve 11 and a return spring 12. The arc-shaped ring sleeve 11 is slidably fitted onto the locking pin 7. The outer edge of the arc-shaped ring sleeve 11 is chamfered, and the chamfered arc surface of the outer edge of the arc-shaped ring sleeve 11 slides in cooperation with the arc-shaped locking buckle 10. The end of the positioning pin 6 near the locking pin 7 is a conical section, and the small-diameter end of the conical section is connected to the locking pin 7. When the arc-shaped locking buckle 10 locks the arc-shaped ring sleeve 11, it facilitates the return space of the arc-shaped locking buckle 10 under the elastic action of the elastic piece 9, allowing the arc-shaped locking buckle 10 to abut against the spring. On the top outer arc surface of the arc-shaped ring 11, the chuck 8 is disengaged in the next step. A boss is provided circumferentially on the outer periphery of the positioning pin 6. A limiting groove is provided inside the inductor housing 3 to slide with the boss. The return spring 12 is located within the limiting groove, and its two ends abut against the inner walls of the boss and the limiting groove, respectively. During installation, the rebound action of the return spring 12 causes the top surface of the chuck 8 to press firmly against the arc-shaped locking buckle 10, ensuring the firmness and stability of the installation of adjacent inductor housings 3. During the process, when disassembling the positioning pin 6, simply press the positioning pin 6. The end of the positioning pin 6 will push the arc-shaped ring 11 towards the arc-shaped locking buckle 10. The chamfered arc surface of the arc-shaped ring 11 will slide and engage with the arc-shaped locking buckle 10, pushing the arc-shaped locking buckle 10 away from each other and releasing the locking of the chuck 8. When the arc-shaped locking buckle 10 is flush with the end face of the arc-shaped ring 11, the elastic piece 9 restores its elastic deformation, causing the arc-shaped locking buckle 10 to reset and abut against the outer arc surface of the top of the arc-shaped ring 11 and lock it in place. At this time, lifting the positioning pin 6 will cause the arc-shaped locking buckle to engage. When the buckle 10 engages with the arc-shaped retaining ring 11, the arc-shaped retaining ring 11 slides downwards along the retaining pin 7 until it abuts against the chuck 8. The top outer arc surface of the arc-shaped retaining ring 11 slides and engages with the lower arc surface of the arc-shaped retaining buckle 10, causing the arc-shaped retaining buckle 10 to move away from each other. This allows the arc-shaped retaining ring 11 and the chuck 8 to be removed simultaneously, completing the disassembly. This disassembly method is simple to operate, requires no complicated tools, and will not damage the locking mechanism. It enables repeated assembly and disassembly of the combined inductor, improves the reuse rate of the inductor, and reduces the cost of use.

[0047] The positioning mechanism includes a protective cover 13 and a positioning component. As a secondary fixing and protection structure for the combined inductor, the positioning mechanism mainly includes a protective cover 13 and a positioning component. Its core function is to fix the position of the positioning pin 6 on the inductor shell 3, and at the same time seal the splicing seam between two adjacent inductor shells 3, further improving the structural stability and protection performance of the combined inductor. The protective cover 13 is slidably fitted on the inductor shell 3. The protective cover 13 adopts a full-wrap design. When the protective cover 13 slides to the splicing position, it can completely cover the splicing point of two adjacent inductor shells 3, forming a sealed protection structure. This effectively prevents dust, moisture, oil and other impurities from entering the inductor, avoiding problems such as coil 2 aging due to moisture and core corrosion, thereby extending the service life of the combined inductor and improving its adaptability in harsh environments. A crossbar connects the protective cover 13 and the positioning pin 6. An adjustment groove is opened on the inductor shell 3 to slide with the crossbar.

[0048] The number of positioning components is at least two, and the two positioning components are used to position the protective cover 13 on the two adjacent inductor housings 3 respectively.

[0049] The positioning assembly includes a fixing pin 14, a fixing spring 15, and a retraction drive. The inner wall of the protective cover 13 has a receiving hole for accommodating the fixing pin 14, which is slidably installed within the receiving hole. One side of the inductor housing 3 has multiple positioning holes 16 that mate with the fixing pin 14, arranged linearly along the sliding direction of the protective cover 13 (to accommodate length errors of some positioning pins 6 and locking pins 7). The fixing spring 15 is installed within the receiving hole, with its two ends abutting against the end of the fixing pin 14 and the inner wall of the receiving hole, respectively. The retraction drive is used to drive the fixing pin 14 to retract. Within the storage hole, the fixing spring 15 remains compressed during actual use, providing continuous elastic thrust to the fixing pin 14. When the protective cover 13 slides to the preset position, the fixing pin 14 automatically pops out under the elastic force of the fixing spring 15 and snaps into the positioning hole 16 on the inductor housing 3, achieving rapid fixing of the protective cover 13 and the inductor housing 3 without manual alignment or tightening, simplifying the operation process and improving assembly efficiency. Through the elastic snap-fit ​​fixing structure, not only is the fixing effect reliable, but it can also adapt to a certain range of dimensional errors, avoiding fixing failure due to processing accuracy issues and enhancing the fault tolerance of the structure.

[0050] The retraction drive component includes a door-shaped pressing component 17, a trapezoidal block 18, and a lifting spring 19. The upper and lower sides of the protective cover 13 are provided with movable grooves that slide in cooperation with the door-shaped pressing component 17. The trapezoidal block 18 is fixedly connected to one side of the vertical section of the door-shaped pressing component 17. A through hole is provided on the fixing pin 14, and the trapezoidal block 18 passes through the through hole on the fixing pin 14. The inclined surface of the trapezoidal block 18 can slide in cooperation with the inner wall of the through hole. The lifting spring 19 is located within the movable groove, and both ends of the lifting spring 19 abut against the inner wall of the movable groove and the horizontal section of the door-shaped pressing component 17, respectively. In actual use, when unlocking is required, the operator presses the door-shaped pressing component 17, and the door-shaped pressing component 17 overcomes the lifting spring 19. The elastic force of spring 9 moves downward, causing trapezoidal block 18 to move synchronously. The inclined surface of trapezoidal block 18 slides against the inner wall of the perforation, converting the vertical force generated by pressing into a force that pushes the fixing pin 14 to move laterally. This drives the fixing pin 14 to retract into the storage hole, releasing the locking pin 14 from the positioning hole 16. After pressing, the lifting spring 19 can provide a reset force for the door-shaped pressing part 17, allowing the door-shaped pressing part 17 to automatically return to its initial position, facilitating the next operation and avoiding the inability to reset after pressing, which would affect subsequent fixing operations. This retraction drive structure is compact, has high transmission efficiency, and is easy to operate. It can quickly unlock the protective cover 13, providing convenience for the disassembly and reassembly of the combined inductor.

[0051] Steps for using combinable inductors:

[0052] S1. Basic Assembly of a Single Inductor: First, coil 2 is wound into the winding slot of winding frame 1. The winding slot of winding frame 1 is precisely sized to match the wire diameter of coil 2, ensuring that coil 2 is neatly arranged after winding and avoiding looseness or overlap, thereby ensuring the stability and consistency of the inductance. After winding, the pre-assembly of coil 2 and winding frame 1 is completed. Then, the pre-assembled winding frame 1 and coil 2 are placed into the inductor housing 3. The inductor housing 3 has a special limiting structure inside, which can position the winding frame 1. The magnetic core mounting position inside the inductor housing 3 precisely corresponds to the center hole of the winding frame 1. The operator only needs to align the center hole of the winding frame 1 with the magnetic core mounting position to ensure the coaxiality of the winding frame 1 and the magnetic core, thus avoiding the deterioration of inductor performance caused by the misalignment of the magnetic core and the coil 2. Finally, the inductor housing 3 is detachably fixed to the mounting base 4. The mounting base 4 is provided with multiple mounting holes and positioning protrusions, which can cooperate with the corresponding structure on the bottom of the inductor housing 3 to achieve quick positioning and fixing. The detachable design facilitates subsequent maintenance, replacement or individual use of a single inductor, improving the convenience of inductor maintenance.

[0053] S2. Combination and Assembly of Multiple Inductors: The combination and assembly of multiple inductors aims to flexibly combine several inductors that have completed basic assembly according to actual circuit requirements, forming a combined inductor with specific functions. The operation process is as follows: First, according to the circuit design requirements for parameters such as inductance and common-mode / differential-mode rejection capability, select an appropriate number of inductors that have completed basic assembly, ensuring that the specifications and parameters of the selected inductors are consistent to avoid performance failure after combination due to parameter differences. Then, align the positioning pin 6 on the winding frame 1 of one inductor with the insertion positioning hole 5 on the winding frame 1 of the adjacent inductor. The one-to-one correspondence design between the positioning pin 6 and the insertion positioning hole 5 ensures that the alignment process is fast and accurate, without repeated adjustments, improving assembly efficiency. After alignment, push the positioning pin 6 into the corresponding insertion positioning hole 5 until the press-type locking mechanism locks and fixes the positioning pin 6.

[0054] The specific operation of the push-type locking mechanism to lock the positioning pin 6 includes the following three sub-steps:

[0055] S21. When the positioning pin 6 is inserted into the positioning hole 5, the positioning pin 6 will drive the locking pin 7 and the chuck 8 to move synchronously. The chamfered arc surface at the bottom of the chuck 8 slides in contact with the inclined surface of the arc-shaped locking buckle 10. Since the contact between the chamfered arc surface and the inclined surface is a line contact, the friction is small, which can effectively reduce the insertion resistance and make the insertion process smoother. During the sliding contact process, the chuck 8 will push multiple arc-shaped locking buckles 10 to move away from each other, thereby squeezing the elastic sheet 9 to cause elastic deformation. The elastic deformation process of the elastic sheet 9 is stable and will not produce violent impact, thus avoiding damage to the structure.

[0056] S22. When the chuck 8 moves to the point where the arc-shaped locking buckle 10 aligns with the end face of the chuck 8 near the locking pin 7, the elastic piece 9 is no longer compressed and begins to recover its elastic deformation. Under the action of the elastic restoring force, it drives the arc-shaped locking buckle 10 to reset, so that the arc-shaped locking buckle 10 tightly abuts against the end face of the chuck 8, realizing the locking and fixing of the chuck 8 and the insertion positioning hole 5, thereby completing the locking of the positioning pin 6. At this time, the elastic piece 9 is in its natural state, which can provide a continuous and stable locking force to the arc-shaped locking buckle 10, ensuring that the positioning pin 6 will not move in the axial direction. At the same time, the circular array arrangement of multiple elastic pieces 9 makes the locking force evenly distributed on the end face of the chuck 8, avoiding uneven force on the chuck 8 and deformation, and ensuring the stability of the locking structure.

[0057] S23. When it is necessary to remove the positioning pin 6, the operator presses the positioning pin 6. The end of the positioning pin 6 will push the arc-shaped ring 11 to move towards the arc-shaped locking buckle 10. The chamfered arc surface of the arc-shaped ring 11 slides with the arc-shaped locking buckle 10, pushing the arc-shaped locking buckle 10 away from each other, releasing the locking restriction on the chuck 8. When the arc-shaped locking buckle 10 is flush with the end face of the arc-shaped ring 11, the elastic piece 9 restores its elastic deformation, causing the arc-shaped locking buckle 10 to reset and abut against the chuck. The arc-shaped retaining ring 11 is locked on its outer circumferential arc surface at the top. At this point, the operator lifts the positioning pin 6. Because the arc-shaped locking buckle 10 holds the arc-shaped retaining ring 11, the ring 11 slides downwards along the locking pin 7 until it abuts against the chuck 8. The top outer circumferential arc surface of the arc-shaped retaining ring 11 slides and engages with the lower arc surface of the arc-shaped locking buckle 10, causing the locking buckle 10 to move away from each other. This allows the arc-shaped retaining ring 11 and the chuck 8 to be removed simultaneously, completing the disassembly. The entire disassembly process requires no complex tools, is convenient to operate, and will not damage components such as the positioning pin 6, chuck 8, or arc-shaped locking buckle 10, ensuring the inductor unit can be reused and reducing operating costs.

[0058] S3. Overall Positioning and Seam Seaming: After the multi-inductor assembly is completed, an overall positioning mechanism is needed to seal the seams, further improving the structural stability and protection performance of the combined inductors. The specific operation steps are as follows:

[0059] S31. After the multiple inductors are assembled, the operator slides the protective cover 13 along the adjustment groove on the inductor housing 3. The protective cover 13 moves the positioning pin 6 through the crossbar, so that the positioning pin 6 is tightly against the inner wall of the inductor housing 3, thus achieving the initial fixation of the positioning pin 6. This fixing step can further limit the radial displacement of the positioning pin 6, prevent the positioning pin 6 from shaking during use, and at the same time, the tight contact between the positioning pin 6 and the inner wall of the inductor housing 3 can also enhance the connection rigidity between the inductor housings 3 and improve the overall structural stability of the combined inductor.

[0060] S32. When the protective cover 13 moves to the preset position, the fixing pin 14 in the positioning component automatically pops out under the elastic force of the fixing spring 15 and is inserted into the positioning hole 16 on the inductor housing 3, thus completing the fixing of the protective cover 13 and the inductor housing 3, and achieving the final positioning of the positioning pin 6. The elastic thrust provided by the fixing spring 15 ensures that the fixing pin 14 and the positioning hole 16 are tightly connected and will not loosen. Moreover, this snap-fit ​​method does not require additional tightening operations, which simplifies the fixing process and improves assembly efficiency. After the final positioning is completed, the positioning pin 6 is double-fixed by the press-type locking mechanism and the positioning mechanism to ensure that it will not be displaced or detached in harsh environments such as vibration and impact, thus ensuring the structural stability of the combined inductor.

[0061] S33. When the positioning mechanism needs to be unlocked, the operator presses the door-shaped pressing part 17 of the compression drive component. The door-shaped pressing part 17 drives the trapezoidal block 18 to move. The inclined surface of the trapezoidal block 18 slides and engages with the inner wall of the perforation, pushing the fixing pin 14 into the storage hole of the protective cover 13, releasing the locking pin 14 from the positioning hole 16. At this time, the positioning mechanism can be reset by sliding the protective cover 13 in the opposite direction. At the same time, the splicing seam of the adjacent inductor shell 3 is exposed, which facilitates the subsequent disassembly or maintenance of the combined inductor. The unlocking process is simple to operate and takes little time. It can quickly unlock the positioning mechanism and ensure the flexible adjustment of the combined inductor.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A combinable inductor, characterized in that, It includes a winding frame (1), a coil (2), an inductor housing (3) and a mounting base (4). The coil (2) is wound on the winding frame (1). Both the winding frame (1) and the coil (2) are installed inside the inductor housing (3). The inductor housing (3) is detachably installed on the mounting base (4). The winding frame (1) is provided with multiple insertion positioning holes (5), and multiple positioning pins (6) are also installed on the winding frame (1). The multiple positioning pins (6) are arranged one-to-one with the multiple insertion positioning holes (5). The diameter of the positioning pin (6) is the same as the inner diameter of the insertion positioning hole (5). A press-type locking mechanism is provided in the insertion positioning hole (5). The press-type locking mechanism can fix the position of the positioning pin (6) in the insertion positioning hole (5). The inductor housing (3) is provided with a positioning mechanism, which is used to fix the position of the positioning pin (6) on the inductor housing (3). The positioning mechanism can also seal the splicing seam between two adjacent inductor housings (3).

2. The combinable inductor according to claim 1, characterized in that, The press-type locking mechanism includes a locking pin (7), a chuck (8), elastic pieces (9), and an arc-shaped locking buckle (10); one end of the locking pin (7) is connected to one end of the positioning pin (6), the diameter of the locking pin (7) is smaller than the diameter of the positioning pin (6), the chuck (8) is connected to the end of the locking pin (7) away from the positioning pin (6), the diameter of the chuck (8) is the same as the diameter of the positioning pin (6), the bottom outer edge of the chuck (8) is chamfered, and there are multiple elastic pieces (9). The housing (3) has a locking groove that communicates with the insertion positioning hole (5). Multiple elastic pieces (9) are arranged in a ring in the locking groove. The number of arc-shaped locking buckles (10) is the same as the number of elastic pieces (9) and they are set one by one. The arc-shaped locking buckles (10) are connected to the side where the elastic pieces (9) are close to each other. The bottom edge of the chuck (8) is chamfered and the inclined surface of the arc-shaped locking buckle (10) slides and engages. The arc-shaped locking buckle (10) can abut against the side end face of the chuck (8) near the locking pin (7).

3. A combinable inductor according to claim 2, characterized in that, The chuck (8) has a groove on the side near the pin (7), and the arc-shaped locking buckle (10) can be inserted into the groove.

4. A combinable inductor according to claim 2, characterized in that, The press-type locking mechanism also includes an arc-edge ring sleeve (11) and a return spring (12); the arc-edge ring sleeve (11) is slidably fitted on the locking pin (7), the outer edge of the arc-edge ring sleeve (11) is chamfered, the chamfered arc surface of the outer edge of the arc-edge ring sleeve (11) is slidably engaged with the arc-shaped abutment (10), and the end of the positioning pin (6) near the locking pin (7) is a conical section, and the small diameter end of the conical section is connected to the locking pin (7); The positioning pin (6) has a boss on its outer periphery, and the inductor housing (3) has a limiting groove that slides with the boss. The reset spring (12) is located in the limiting groove, and the two ends of the reset spring (12) abut against the inner wall of the end of the boss and the limiting groove, respectively.

5. A combinable inductor according to claim 1, characterized in that, The positioning mechanism includes a protective cover (13) and a positioning component; the protective cover (13) is slidably mounted on the inductor housing (3), and a crossbar is connected between the protective cover (13) and the positioning pin (6); the inductor housing (3) is provided with an adjustment groove that slides with the crossbar. The number of positioning components is at least two, and the two positioning components are respectively used for the position of the protective cover (13) on two adjacent inductor shells (3).

6. A combinable inductor according to claim 5, characterized in that, The positioning component includes a fixing pin (14), a fixing spring (15), and a retraction drive; the inner wall of the protective cover (13) is provided with a storage hole for receiving the fixing pin (14), the fixing pin (14) is slidably installed in the storage hole, one side of the inductor housing (3) is provided with a positioning hole (16) that matches the fixing pin (14), the fixing spring (15) is installed in the storage hole, and the two ends of the fixing spring (15) abut against the end of the fixing pin (14) and the inner wall of the end of the storage hole, respectively; The retraction drive is used to drive the fixing pin (14) to retract into the receiving hole.

7. A combinable inductor according to claim 6, characterized in that, The retraction drive includes a door-shaped pressing component (17), a trapezoidal block (18), and a lifting spring (19); the upper and lower sides of the protective cover (13) are provided with movable sliding grooves that slide with the door-shaped pressing component (17); the trapezoidal block (18) is fixedly connected to one side of the vertical section of the door-shaped pressing component (17); a through hole is provided on the fixing pin (14); the trapezoidal block (18) passes through the through hole on the fixing pin (14); the inclined surface of the trapezoidal block (18) can slide with the inner wall of the through hole; The lifting spring (19) is located in the movable slide, and the two ends of the lifting spring (19) abut against the inner wall of the movable slide and the transverse section of the door-shaped pressing member (17), respectively.

8. A method of using a combinable inductor, employing a combinable inductor as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Basic assembly of a single inductor: Wind the coil (2) into the winding slot of the winding frame (1) to complete the pre-assembly of the coil (2) and the winding frame (1); Place the pre-assembled winding frame (1) and coil (2) into the inductor housing (3) as a whole, align the center hole of the winding frame (1) with the magnetic core assembly position inside the inductor housing (3), and then detachably fix the inductor housing (3) to the mounting base (4) to complete the basic assembly of a single inductor; S2. Combination of multiple inductors: According to the actual circuit requirements, select several inductors that have completed basic assembly, align the positioning pin (6) on the winding frame (1) of one of the inductors with the insertion positioning hole (5) on the winding frame (1) of the adjacent inductor, push the positioning pin (6) into the corresponding insertion positioning hole (5) until the press-type locking mechanism completes the locking and fixing of the positioning pin (6); S3. Overall positioning and splicing seam sealing: Operate the positioning mechanism on the inductor housing (3) to fix the positioning pin (6) on the inductor housing (3), and at the same time use the positioning mechanism to seal the splicing seam between two adjacent inductor housings (3) to complete the assembly of multiple inductors.

9. A method of using a combinable inductor according to claim 8, characterized in that, The specific operations of the press-type locking mechanism in step S2 to lock the positioning pin (6) include: S21. When the positioning pin (6) is inserted into the positioning hole (5), the positioning pin (6) drives the locking pin (7) and the chuck (8) to move synchronously. The chamfered arc surface at the bottom of the chuck (8) slides and engages with the inclined surface of the arc-shaped locking buckle (10), pushing multiple arc-shaped locking buckles (10) to move away from each other, thereby squeezing the elastic sheet (9) to cause it to undergo elastic deformation. S22. When the chuck (8) moves to the point where the arc-shaped locking buckle (10) is aligned with the end face of the chuck (8) near the locking pin (7), the elastic sheet (9) restores its elastic deformation, causing the arc-shaped locking buckle (10) to reset and abut against the end face of the chuck (8), thereby achieving the locking and fixing of the chuck (8) with the insertion positioning hole (5), and thus completing the locking of the positioning pin (6). S23. When the positioning pin (6) needs to be removed, press the positioning pin (6). The end of the positioning pin (6) pushes the arc-shaped ring (11) towards the arc-shaped buckle (10). The chamfered arc surface of the arc-shaped ring (11) pushes the arc-shaped buckle (10) away from each other. When the arc-shaped buckle (10) is flush with the end face of the arc-shaped ring (11), the elastic piece (9) restores its elastic deformation, causing the arc-shaped buckle (10) to reset and abut against the outer periphery of the top of the arc-shaped ring (11). The arc surface is locked, and the positioning pin (6) is lifted. As the arc-shaped locking buckle (10) locks the arc-shaped ring sleeve (11), the arc-shaped ring sleeve (11) slides down along the locking pin (7) until the arc-shaped ring sleeve (11) abuts against the chuck (8). The top outer arc surface of the arc-shaped ring sleeve (11) slides and engages with the lower arc surface of the arc-shaped locking buckle (10), driving the arc-shaped locking buckle (10) to move away from each other. Simultaneously, the arc-shaped ring sleeve (11) and the chuck (8) are removed, and the disassembly is completed.

10. A method of using a combinable inductor according to claim 8, characterized in that, The operation of the positioning mechanism in step S3 includes: S31. After the multi-inductor splicing is completed, slide the protective cover (13) along the adjustment groove on the inductor shell (3). The protective cover (13) drives the positioning pin (6) to move through the crossbar, so that the positioning pin (6) is tightly against the inner wall of the inductor shell (3), and the positioning pin (6) is initially fixed. S32. When the protective cover (13) moves to the preset position, the fixing pin (14) in the positioning component pops out under the elastic force of the fixing spring (15) and is inserted into the positioning hole (16) on the inductor shell (3), thus completing the fixing of the protective cover (13) and the inductor shell (3), thereby realizing the final positioning of the positioning pin (6). S33. When the positioning mechanism needs to be unlocked, press the door-shaped pressing part (17) of the compression drive component. The door-shaped pressing part (17) drives the trapezoidal block (18) to move. The inclined surface of the trapezoidal block (18) slides and engages with the inner wall of the perforation, pushing the fixing pin (14) to retract into the storage hole of the protective cover (13), releasing the locking pin (14) from the positioning hole (16). At this time, the positioning mechanism can be reset by sliding the protective cover (13) in the opposite direction, and the splicing seam of the adjacent inductor shell (3) will be exposed.

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