An axial adjustable air-gap inductor package structure

Abstract

This invention discloses an axially adjustable clearance-avoiding air gap inductor packaging structure, relating to the field of inductor packaging technology. It includes a chassis, a PCB board, an inductor body, a positioning mechanism, a second mounting box, and a detection mechanism. The chassis is hollow inside, housing a PCB board with the inductor body soldered to the top. Positioning mechanisms are rotatably connected to the left and right sides of the front end of the chassis, and a second mounting box is fixedly connected to the rear end. The inductor body, through the cooperation of multiple components, achieves a high-precision, high-stability integrated magnetic circuit adjustment and sealing structure, improving overall rigidity and environmental adaptability. The positioning mechanism clamps and fixes the PCB board, maintaining precise alignment between the inductor body pins and the PCB board vias during subsequent adjustments and flipping, preventing misalignment or poor soldering due to gravity or vibration. It actively adapts to the inductor body packaging shape and maintains stable relative positions between the PCB board and the inductor body during dynamic operation.

Description

Technical Field

[0001] This invention relates to the field of inductor packaging technology, specifically an axially adjustable clearance-avoiding air gap inductor packaging structure. Background Technology

[0002] The axially adjustable clearance air gap inductor package structure is an inductor package form designed specifically for high-frequency circuits, resonant circuits, or filter circuits. Its core feature is that it achieves precise control of the magnetic circuit air gap through axial mechanical adjustment, thereby improving the adjustability and long-term stability of the inductance value.

[0003] In existing technologies, the positioning, guiding, and sealing of magnetic circuit components are usually handled separately, resulting in complex structures and limited precision. It is difficult to achieve a high-precision and highly stable integrated magnetic circuit adjustment and sealing structure, which reduces the overall rigidity and environmental adaptability. During the assembly and welding of existing axially adjustable inductors, manual or simple jigs are generally used to position and clamp the PCB planarly. This method is difficult to maintain the precise alignment of the inductor pins and PCB vias during subsequent adjustment and flipping. It is prone to misalignment and poor soldering due to gravity or vibration. It is particularly unfavorable for multi-angle welding or automated production line flow. Therefore, it is difficult to actively adapt to the inductor packaging shape and maintain the relative position of the PCB and inductor in dynamic operation with a magnetically coordinated fixing solution.

[0004] Furthermore, existing axially adjustable clearance air gap inductor packages lack a suitable vibration excitation and precise detection system. They mostly use external large excitation equipment to trigger vibration, which is cumbersome to operate and has low excitation accuracy. The detection end does not have a dedicated micro-force contact probe, and only uses conventional sensors for rough detection. It is impossible to accurately capture the amplitude and phase of the inductor vibration feedback, making it difficult to achieve fine detection of the inductor performance after packaging. Packaging defects are easily missed, affecting the inductor's working stability and adjustment accuracy.

[0005] In conclusion, existing axially adjustable inductor adjustment structures suffer from defects such as low adjustment accuracy and easy wear of components. They often use metal tools to drive the magnetic core, which can easily generate electromagnetic interference and scratch the magnetic core. Some lack a dedicated meshing structure, resulting in poor linkage between the tool and the magnetic core, making them prone to slippage and deviation. At the same time, there is often a problem of the coil moving in tandem with the magnetic core, leading to winding deformation, damage to the enameled wire, insufficient uniformity of air gap adjustment, and unstable changes in magnetic reluctance and inductance values. They cannot achieve precise and controllable adjustment of the air gap, making it difficult to meet the requirements of precision circuits for fine-tuning and stability of inductance values. Summary of the Invention

[0006] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides an axially adjustable clearance air gap inductor packaging structure.

[0007] The present invention is implemented as follows: an axially adjustable clearance air gap inductor packaging structure is constructed. The device includes a chassis, the interior of which is hollow. A PCB board is provided inside the chassis. The inductor body is fixed to the top of the PCB board by solder. Positioning mechanisms are rotatably connected to the left and right sides of the front end of the chassis. A second mounting box is fixedly connected to the rear end of the chassis. A detection mechanism is fixedly connected to the top front end of the second mounting box.

[0008] The inductor body includes an air gap base. The air gap base is fixed to the top of the PCB board with solder, and the front end of the air gap base is provided with an adjustment hole. An air gap moving ring is provided inside the air gap base. The back of the air gap moving ring is connected to the magnetic core. A coil is wound on the outer wall of the magnetic core. Magnetic cores are provided at both the front and rear ends inside the air gap base. An air gap sealing ring is installed at the gap between the two sets of magnetic cores, and the air gap sealing ring is attached to the outer wall of one set of magnetic cores.

[0009] Preferably, the positioning mechanism includes a first mounting box, with the first mounting box rotatably connected to both the left and right sides of the front end of the chassis. The outer side of the first mounting box is fixedly connected to the output shaft of the servo motor, and the servo motor is fixedly connected to the inside of the chassis housing. A mounting plate is fixedly connected to the inner right end of the first mounting box on the right side of the front end of the chassis. A first turntable is rotatably connected to the front end of the mounting plate. The upper and lower sides of the front end of the first turntable are rotatably connected to one end of an L-shaped rotating rod. A clamping plate is rotatably connected to the other end of the L-shaped rotating rod. An electromagnetic block is fixedly connected to the clamping surface of the clamping plate.

[0010] Preferably, the detection mechanism includes a cylinder. The cylinder is fixedly connected to the top front end of the second mounting box. The cylinder's bottom push rod is fixedly connected to a third mounting box. The back of the third mounting box is slidably connected to the outer wall of the connecting rod. An adjustment mechanism is fixedly connected to the back of the connecting rod. A second motor is fixedly connected to the upper left end of the third mounting box. A second turntable is fixedly connected to the right output shaft of the second motor. A connecting block is fixedly connected to the right edge of the second turntable. The connecting block is slidably connected to the outer wall of the sliding rod. Mounting brackets are fixedly connected to the center and front end of the outer wall of the connecting rod. A micro-force contact probe is fixedly connected to the bottom of the mounting bracket at the center of the outer wall of the connecting rod. A miniature piezoelectric ceramic sheet is fixedly connected to the bottom of the mounting bracket at the front end of the outer wall of the connecting rod. A fixing rod is fixedly connected to the bottom of the connecting rod. A welding head is fixedly connected to the bottom of the fixing rod.

[0011] Preferably, the adjusting mechanism includes a fixed plate, a fixed plate is fixedly connected to the back of the connecting rod, a fixed block is fixedly connected to the upper front end of the fixed plate, a first motor is fixedly connected to the left front end of the fixed block, the right output shaft of the first motor is fixedly connected to one end of the first rotating rod, the other end of the first rotating rod is rotatably connected to one end of the second rotating rod, the other end of the second rotating rod is rotatably connected to a moving block, a motor housing is fixedly connected to the front end of the moving block, and a motor is fixedly connected inside the motor housing, and the bottom output shaft of the motor inside the motor housing is fixedly connected to a ceramic hexagonal wrench.

[0012] Preferably, the electromagnetic block is electrically connected to an external current output device, and the outer wall of the clamping plate is slidably connected to the first mounting box.

[0013] Preferably, the clamping plate is slidably connected to the front end of the mounting plate, and the electromagnetic block is magnetically attracted to the PCB board.

[0014] Preferably, the outer wall of the bottom push rod of the cylinder is slidably connected to the second mounting box, and the left end of the second turntable is rotatably connected to the left end of the inner side of the third mounting box.

[0015] Preferably, a connecting rod is fixedly connected to the bottom of the sliding rod, and the micro-force contact probe and the micro piezoelectric ceramic sheet are both electrically connected to the external display screen.

[0016] Preferably, the outer wall of the mounting bracket and the outer wall of the fixing rod are slidably connected to the bottom of the third mounting box, and the fixing rod is located between the two sets of mounting brackets.

[0017] Preferably, a limiting block is fixedly connected to the lower front end of the fixed plate, and the moving block is slidably connected to the limiting block. The right front end of the fixed block is rotatably connected to the first rotating rod.

[0018] The present invention has the following advantages: By providing an improved axially adjustable clearance air gap inductor packaging structure, the present invention offers the following improvements compared to similar devices:

[0019] This invention discloses an axially adjustable clearance-avoidance air gap inductor packaging structure. The structure includes an inductor body and a multi-component integrated magnetic circuit adjustment and sealing structure for high precision and stability, improving overall rigidity and environmental adaptability. A positioning mechanism clamps and fixes the PCB board, ensuring precise alignment of the inductor body pins with the PCB board vias during subsequent adjustments and flipping. This prevents misalignment and poor soldering due to gravity or vibration, actively adapting to the inductor body's packaging shape and maintaining stable relative positions between the PCB board and the inductor body during dynamic operation. A detection mechanism uses miniature piezoelectric ceramic plates and micro-force contact probes to inspect the inductor body, enabling refined testing of its performance after packaging and improving operational stability and adjustment accuracy. An adjustment mechanism uses a ceramic hexagonal wrench to avoid electromagnetic interference and core wear. Combined with coil fixing, a precise guiding structure for the air gap moving ring and air gap base, it eliminates coil deformation issues, ensuring uniform air gap adjustment and achieving precise and controllable adjustment of the magnetic circuit air gap, stably changing the reluctance and inductance values. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the inductor body of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the positioning mechanism of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the second mounting box and the testing mechanism of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the detection mechanism of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the adjustment mechanism of the present invention.

[0026] The components include: chassis-1, PCB board-2, inductor body-3, air gap base-31, air gap moving ring-32, magnetic core-33, coil-34, air gap sealing ring-35, positioning mechanism-4, first mounting box-41, servo motor-42, mounting plate-43, first turntable-44, L-shaped rotating rod-45, clamping plate-46, electromagnetic block-47, second mounting box-5, detection mechanism-6, cylinder-61, third mounting box-62, and connecting rod-6. 3. Adjustment mechanism - 64, Fixing plate - 641, Fixing block - 642, First motor - 643, First rotating rod - 644, Second rotating rod - 645, Moving block - 646, Motor housing - 647, Ceramic hex wrench - 648, Second motor - 65, Second turntable - 66, Connecting block - 67, Sliding rod - 68, Mounting bracket - 69, Micro-force contact probe - 610, Miniature piezoelectric ceramic sheet - 611, Fixing rod - 612, Welding head - 613. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-5 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0030] Example 1:

[0031] Please see Figures 1-2 The present invention provides an axially adjustable clearance air gap inductor packaging structure, including a chassis 1. The chassis 1 has a hollow interior and a PCB board 2 inside. An inductor body 3 is soldered to the top of the PCB board 2, and the PCB board 2 has through holes.

[0032] Positioning mechanisms 4 are rotatably connected to the left and right sides of the front end inside the chassis 1. A second mounting box 5 is fixedly connected to the rear end inside the chassis 1. A detection mechanism 6 is fixedly connected to the top front end of the second mounting box 5.

[0033] The inductor body 3 includes an air gap base 31. The air gap base 31 is fixed to the top of the PCB board 2 by solder. The air gap base 31 has an adjustment hole at the front end. An air gap moving ring 32 is provided inside the air gap base 31. A pin is fixedly connected to the bottom of the air gap base 31. The air gap base 31 is made of high insulation and high magnetic permeability ceramic material.

[0034] The back of the air gap moving ring 32 is connected to the magnetic core 33. A coil 34 is wound on the outer wall of the magnetic core 33. The air gap base 31 has magnetic cores 33 at both the front and rear ends. An air gap sealing ring 35 is installed at the gap between the two sets of magnetic cores 33, and the air gap sealing ring 35 is attached to the outer wall of one set of magnetic cores 33. The air gap sealing ring 35 is made of temperature-resistant and low-friction fluororubber.

[0035] The working principle of the axially adjustable clearance air gap inductor packaging structure based on Embodiment 1 is as follows:

[0036] First, when using this device, place it in the work area, and then connect it to an external power source to provide the power required for its operation.

[0037] Second, during the packaging process, an external robotic arm picks up the PCB board 2 and places it between two sets of positioning mechanisms 4. The two sets of positioning mechanisms 4 clamp the PCB board 2. Then, the external robotic arm aligns the pins of the inductor body 3 and inserts them into the corresponding through holes of the PCB board 2. A small amount of glue is used to temporarily fix the inductor body 3 to prevent displacement during soldering. Then, the positioning mechanism 4 drives the PCB board 2 to flip over. The detection mechanism 6 then solders the inductor body 3. After soldering, the PCB board 2 is flipped over again, and the detection mechanism 6 detects the inductor body 3. Then, the adjustment mechanism 64 adjusts the inductor body 3 until the required inductance or circuit performance indicators are achieved, thus completing the packaging of the inductor body 3.

[0038] Third, during use, the inductor body 3 first uses the air gap base 31 as a reference carrier for the magnetic circuit and mechanical structure, providing axial guidance for the air gap moving ring 32 and supporting and fixing the magnetic core 33 and coil 34. Then, the air gap moving ring 32 provides auxiliary positioning for the magnetic core 33 and serves as the mounting carrier for the air gap sealing ring 35. Then, through the linkage between the magnetic core 33 and the air gap moving ring 32, the distance between the magnetic core 33 and the fixed magnetic core 33 is adjusted to change the air gap width. The coil 34 serves as the electromagnetic induction carrier. Finally, the air gap sealing ring 35 prevents magnetic circuit contamination and abnormal magnetic resistance, ensuring the inductance adjustment accuracy and long-term working stability of the inductor body 3.

[0039] Example 2:

[0040] Please see Figure 3 The present invention provides an axially adjustable clearance air gap inductor packaging structure. Compared with Embodiment 1, this embodiment further includes a positioning mechanism 4. The positioning mechanism 4 includes a first mounting box 41. The first mounting box 41 is rotatably connected to the left and right sides of the front end of the housing 1. The outer side of the first mounting box 41 is fixedly connected to the output shaft of the servo motor 42, and the servo motor 42 is fixedly connected to the inside of the housing of the housing 1. The servo motor 42 can easily drive the first mounting box 41 to rotate.

[0041] A mounting plate 43 is fixedly connected to the right end of the first mounting box 41 at the front right side of the chassis 1. A first turntable 44 is rotatably connected to the front end of the mounting plate 43. A mounting rod composed of electromagnetic blocks is fixedly connected to the back of the first turntable 44. It is electrically connected to an external current output device. When energized, the outer wall of the mounting rod composed of electromagnetic blocks is magnetically attracted to the mounting plate 43.

[0042] The front end of the first turntable 44 is rotatably connected to one end of an L-shaped rotating rod 45 on both the upper and lower sides. The other end of the L-shaped rotating rod 45 is rotatably connected to a clamping plate 46. An electromagnetic block 47 is fixedly connected to the clamping surface of the clamping plate 46. The electromagnetic block 47 is electrically connected to an external current output device. The outer wall of the clamping plate 46 is slidably connected to the first mounting box 41. The clamping plate 46 is slidably connected to the front end of the mounting plate 43. The electromagnetic block 47 is magnetically attracted to the PCB board 2.

[0043] In this embodiment:

[0044] When the external robotic arm places the PCB board 2 between the two sets of positioning mechanisms 4, the external current output device drives the electromagnetic block 47 on the clamping plate 46 to work, so that the electromagnetic block 47 on the clamping plate 46 clamps and fixes the PCB board 2 by magnetic attraction with the PCB board 2. When the electromagnetic block 47 on the clamping plate 46 magnetically attracts the PCB board 2, the clamping plate 46 drives the first turntable 44 to rotate through the rotational connection of the L-shaped rotating rod 45. The first turntable 44 drives the mounting rod composed of electromagnetic blocks on its back to rotate. Then, the external current output device drives the mounting rod composed of electromagnetic blocks to work, so that it magnetically engages with the mounting plate 43. The PCB board 2 is clamped and locked in place by adsorption. When the PCB board 2 needs to be flipped, the servo motor 42 is started, which drives the first mounting box 41 to rotate. The first mounting box 41 drives the clamping plate 46 and the electromagnetic block 47 to rotate. The clamping plate 46 and the electromagnetic block 47 drive the PCB board 2 to flip, so as to maintain the precise alignment of the pins of the inductor body 3 and the through holes of the PCB board 2 during subsequent adjustment and flipping. This prevents misalignment and poor soldering caused by gravity or vibration. It actively adapts to the packaging shape of the inductor body 3 and maintains the relative position stability of the PCB board 2 and the inductor body 3 during dynamic operation.

[0045] Example 3:

[0046] Please see Figures 4-5 The present invention provides an axially adjustable clearance air gap inductor packaging structure. Compared with Embodiment 1, this embodiment further includes: a detection mechanism 6, which includes a cylinder 61. The cylinder 61 is fixedly connected to the top front end of the second mounting box 5. The cylinder 61 is fixedly connected to the bottom push rod of the cylinder 61. The back of the third mounting box 62 is slidably connected to the outer wall of the connecting rod 63. An adjustment mechanism 64 is fixedly connected to the back of the connecting rod 63. A second motor 65 is fixedly connected to the upper left end of the third mounting box 62. The second motor 65 facilitates the rotation of the second turntable 66.

[0047] The second motor 65 has a second turntable 66 fixedly connected to its right output shaft. A connecting block 67 is fixedly connected to the right edge of the second turntable 66. The connecting block 67 is slidably connected to the outer wall of the sliding rod 68. A mounting bracket 69 is fixedly connected to the center and front end of the outer wall of the connecting rod 63. A micro-force contact probe 610 is fixedly connected to the bottom of the mounting bracket 69 at the center of the outer wall of the connecting rod 63. The micro-force contact probe 610 has a built-in force sensor.

[0048] A miniature piezoelectric ceramic sheet 611 is fixedly connected to the bottom of the mounting bracket 69 at the front end of the outer wall of the connecting rod 63. A fixing rod 612 is fixedly connected to the bottom of the connecting rod 63. A welding head 613 is fixedly connected to the bottom of the fixing rod 612. The outer wall of the bottom push rod of the cylinder 61 is slidably connected to the second mounting box 5. The left end of the second turntable 66 is rotatably connected to the left end inside the third mounting box 62. The fixing rod 612 facilitates the movement of the welding head 613.

[0049] The bottom of the sliding rod 68 is fixedly connected to the connecting rod 63. The micro-force contact probe 610 and the micro piezoelectric ceramic sheet 611 are electrically connected to the external display screen. The outer wall of the mounting bracket 69 and the outer wall of the fixing rod 612 are slidably connected to the bottom of the third mounting box 62. The fixing rod 612 is located between the two sets of mounting brackets 69.

[0050] In this embodiment:

[0051] When soldering or testing of the inductor body 3 on PCB board 2 is required, cylinder 61 is activated. Cylinder 61 drives the third mounting box 62 to move downwards. The third mounting box 62 drives the mounting bracket 69, micro-force contact probe 610, miniature piezoelectric ceramic sheet 611, fixing rod 612, and soldering head 613 to move downwards. During soldering, servo motor 42 drives PCB board 2 to flip to the back, i.e., inductor body 3 facing down. Then, second motor 65 is activated. Second motor 65 drives second turntable 66 to rotate. Second turntable 66 passes through... The edge of the connecting block 67 drives the sliding rod 68 to move forward or backward, causing it to slide up and down within the connecting block 67. Then, the sliding rod 68 drives the connecting rod 63 to move forward or backward, which in turn drives the fixing rod 612 to move forward or backward. The fixing rod 612 then drives the soldering head 613 to move forward or backward, aligning the soldering head 613 with the pins of the inductor body 3. The downward movement of the cylinder 61 then solders the pins to the PCB board 2, forming a reliable electrical connection and mechanical fixation. During testing... The servo motor 42 drives the PCB board 2 to flip to the front, i.e., the inductor body 3 faces upward. Then, the second motor 65 is started, which drives the second turntable 66 to rotate. The above steps are repeated, causing the connecting rod 63 to move the two sets of mounting brackets 69 forward or backward. The two sets of mounting brackets 69 respectively drive the micro-force contact probe 610 and the miniature piezoelectric ceramic sheet 611 forward or backward. Through the downward movement of the cylinder 61, the miniature piezoelectric ceramic sheet 611 is attached to the top of the inductor body 3, driven by an external test signal. The micro-vibration generated by the micro-force contact probe 610 creates a vibration excitation on the inductor body 3. The micro-force contact probe 610 lightly touches the inductor body 3 at a point, and the built-in force sensor accurately captures the vibration amplitude and phase fed back by the inductor body 3. Then, the micro-force contact probe 610 and the micro piezoelectric ceramic sheet 611 transmit the detection data to an external display screen, which facilitates the staff to observe and analyze the working status and performance defects of the inductor body 3 in real time, realizes the fine detection of the performance of the inductor body 3 after packaging, and improves the working stability and inductance accuracy of the inductor body 3.

[0052] Example 4:

[0053] Please see Figure 6The present invention provides an axially adjustable clearance air gap inductor packaging structure. Compared with Embodiment 1, this embodiment further includes an adjustment mechanism 64. The adjustment mechanism 64 includes a fixing plate 641. The fixing plate 641 is fixedly connected to the back of the connecting rod 63. A fixing block 642 is fixedly connected to the upper front end of the fixing plate 641. A first motor 643 is fixedly connected to the left front end of the fixing block 642. The fixing block 642 facilitates the installation and fixing of the first motor 643.

[0054] The right output shaft of the first motor 643 is fixedly connected to one end of the first rotating rod 644. The other end of the first rotating rod 644 is rotatably connected to one end of the second rotating rod 645. The other end of the second rotating rod 645 is rotatably connected to a moving block 646, so that the first motor 643 can easily drive the first rotating rod 644 to rotate.

[0055] The front end of the movable block 646 is fixedly connected to the motor housing 647, and the motor housing 647 is fixedly connected to the motor. The bottom output shaft of the motor inside the motor housing 647 is fixedly connected to the ceramic hexagonal wrench 648. A limiting block is fixedly connected to the lower front end of the fixed plate 641, and the movable block 646 is slidably connected to the limiting block. The right front end of the fixed block 642 is rotatably connected to the first rotating rod 644.

[0056] In this embodiment:

[0057] When air gap clearance is required, the motor inside the motor housing 647 is activated. The motor inside the motor housing 647 drives the ceramic hex wrench 648 to rotate. Then, the first motor 643 is activated, which drives the first rotating rod 644 to rotate. The first rotating rod 644 drives the second rotating rod 645 to swing. The second rotating rod 645 drives the moving block 646 to move downward below the limit block at the front end of the fixed plate 641. The moving block 646 drives the motor housing 647 to move downward. The motor housing 647 drives the ceramic hex wrench 648 to move downward. Through the downward movement and rotation of the ceramic hex wrench 648, it is inserted into the adjustment hole of the air gap base 31. Then, the ceramic hex wrench 648 adjusts the torque. The signal is transmitted to the air gap moving ring 32, which drives the air gap moving ring 32 to translate axially. As the air gap moving ring 32 moves, one set of magnetic cores 33 and coils 34 are displaced relative to the other set, causing the effective air gap distance between them to change continuously. This directly changes the magnetic reluctance of the magnetic circuit. When the air gap decreases, the magnetic reluctance decreases and the inductance increases. When the air gap increases, the magnetic reluctance increases and the inductance decreases. This avoids electromagnetic interference and wear of the magnetic cores 33 by using the ceramic hexagonal wrench 648. With the coil 34 fixed and the air gap moving ring 32 and air gap base 31 precisely guided, the problem of coil 34 linkage deformation is eliminated, ensuring the uniformity of air gap adjustment. This achieves precise and controllable adjustment of the air gap in the magnetic circuit and stably changes the magnetic reluctance and inductance values.

[0058] This invention provides an improved axially adjustable air gap avoidance inductor packaging structure. It features an inductor body 3, and through the cooperation of multiple components, achieves a high-precision, highly stable integrated magnetic circuit adjustment and sealing structure, improving overall rigidity and environmental adaptability. A positioning mechanism 4 is included to clamp and fix the PCB board 2, maintaining precise alignment between the inductor body 3 pins and the PCB board 2 through-holes during subsequent adjustment and flipping. This prevents misalignment and poor soldering due to gravity or vibration, actively adapting to the inductor body 3 packaging shape and maintaining the relative position of the PCB board 2 and inductor body 3 during dynamic operation. The inductor body 3 is stabilized; a detection mechanism 6 is set up to detect the inductor body 3 through a miniature piezoelectric ceramic sheet 611 and a micro-force contact probe 610, so as to realize the fine detection of the performance of the inductor body 3 after packaging, and improve the working stability and inductance accuracy of the inductor body 3; an adjustment mechanism 64 is set up to avoid electromagnetic interference and wear of the magnetic core 33 through a ceramic hexagonal wrench 648, and with the coil 34 fixed, the air gap moving ring 32 and the air gap base 31 precisely guided structure, the problem of coil 34 linkage deformation is eliminated, the air gap adjustment uniformity is guaranteed, and the magnetic circuit air gap is precisely and controllably adjusted to stably change the magnetic resistance and inductance values.

[0059] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An axially adjustable clearance air gap inductor packaging structure, comprising a chassis (1), wherein the interior of the chassis (1) is hollow, a PCB board (2) is provided inside the chassis (1), an inductor body (3) is soldered to the top of the PCB board (2), positioning mechanisms (4) are rotatably connected to the left and right sides of the front end of the chassis (1), and a second mounting box (5) is fixedly connected to the rear end of the chassis (1), and a detection mechanism (6) is fixedly connected to the front end of the top of the second mounting box (5); Its features are: The inductor body (3) includes an air gap base (31), the air gap base (31) is fixed to the top of the PCB board (2) by solder, and the air gap base (31) has an adjustment hole at the front end. An air gap moving ring (32) is provided inside the air gap base (31), and the back of the air gap moving ring (32) is connected to the magnetic core (33). A coil (34) is wound on the outer wall of the magnetic core (33). Magnetic cores (33) are provided at both the front and rear ends inside the air gap base (31). An air gap sealing ring (35) is installed at the gap between the two sets of magnetic cores (33), and the air gap sealing ring (35) is attached to the outer wall of one set of magnetic cores (33). The detection mechanism (6) includes a connecting rod (63), and an adjustment mechanism (64) is fixedly connected to the back of the connecting rod (63). The adjusting mechanism (64) includes a fixed plate (641). The fixed plate (641) is fixedly connected to the back of the connecting rod (63). A fixed block (642) is fixedly connected to the upper front end of the fixed plate (641). A first motor (643) is fixedly connected to the left front end of the fixed block (642). The right output shaft of the first motor (643) is fixedly connected to one end of the first rotating rod (644). The other end of the first rotating rod (644) is rotatably connected to one end of the second rotating rod (645). A moving block (646) is rotatably connected to the other end of the second rotating rod (645). A motor housing (647) is fixedly connected to the front end of the moving block (646). A motor is fixedly connected inside the motor housing (647). The bottom output shaft of the motor inside the motor housing (647) is fixedly connected to a ceramic hexagonal wrench (648). When air gap clearance is required, the ceramic hexagonal wrench is used to adjust the air gap clearance. The downward movement and rotation of the angle wrench (648) allows it to be inserted into the adjustment hole of the air gap base (31). Then, the ceramic hexagonal wrench (648) transmits torque to the air gap moving ring (32), driving the air gap moving ring (32) to translate axially. As the air gap moving ring (32) moves, one set of magnetic cores (33) and coils (34) are displaced relative to the other set, causing the effective air gap distance between them to change continuously, directly changing the magnetic resistance of the magnetic circuit. When the air gap decreases, the magnetic resistance decreases and the inductance increases; when the air gap increases, the magnetic resistance increases and the inductance decreases. Thus, the ceramic hexagonal wrench (648) avoids electromagnetic interference and wear of the magnetic cores (33). With the coil (34) fixed and the air gap moving ring (32) and air gap base (31) precisely guided structure, the problem of coil (34) linkage deformation is eliminated, ensuring the uniformity of air gap adjustment, realizing precise and controllable adjustment of the magnetic circuit air gap, and stably changing the magnetic resistance and inductance values.

2. The axially adjustable clearance-avoidance air gap inductor packaging structure according to claim 1, characterized in that: The positioning mechanism (4) includes a first mounting box (41). The first mounting box (41) is rotatably connected to the left and right sides of the front end of the housing (1). The outer side of the first mounting box (41) is fixedly connected to the output shaft of the servo motor (42), and the servo motor (42) is fixedly connected to the inside of the housing of the housing (1). The right end of the first mounting box (41) on the right side of the front end of the housing (1) is fixedly connected to a mounting plate (43). The front end of the mounting plate (43) is rotatably connected to a first turntable (44). The front end of the first turntable (44) is rotatably connected to one end of an L-shaped rotating rod (45) on both the upper and lower sides. The other end of the L-shaped rotating rod (45) is rotatably connected to a clamping plate (46). The clamping surface of the clamping plate (46) is fixedly connected to an electromagnetic block (47).

3. The axially adjustable clearance air gap inductor packaging structure according to claim 2, characterized in that: The detection mechanism (6) includes a cylinder (61). The cylinder (61) is fixedly connected to the top front end of the second mounting box (5). The bottom push rod of the cylinder (61) is fixedly connected to a third mounting box (62). The back of the third mounting box (62) is slidably connected to the outer wall of the connecting rod (63). The upper left end of the third mounting box (62) is fixedly connected to a second motor (65). The right end output shaft of the second motor (65) is fixedly connected to a second turntable (66). The right edge of the second turntable (66) is fixedly connected to a connecting block (67). The connecting block (67) is slidably connected to the outer wall of the sliding rod (68). The center and front end of the outer wall of the connecting rod (63) are fixedly connected to the mounting bracket (69). The bottom of the mounting bracket (69) at the center of the outer wall of the connecting rod (63) is fixedly connected to a micro-force contact probe (610). The bottom of the mounting bracket (69) at the front end of the outer wall of the connecting rod (63) is fixedly connected to a micro piezoelectric ceramic sheet (611). The bottom of the connecting rod (63) is fixedly connected to a fixing rod (612). The bottom of the fixing rod (612) is fixedly connected to a welding head (613).

4. The axially adjustable clearance air gap inductor packaging structure according to claim 3, characterized in that: The electromagnetic block (47) is electrically connected to an external current output device, and the outer wall of the clamping plate (46) is slidably connected to the first mounting box (41).

5. The axially adjustable clearance air gap inductor packaging structure according to claim 4, characterized in that: The clamping plate (46) is slidably connected to the front end of the mounting plate (43), and the electromagnetic block (47) is magnetically attracted to the PCB board (2).

6. The axially adjustable clearance air gap inductor packaging structure according to claim 5, characterized in that: The outer wall of the bottom push rod of the cylinder (61) is slidably connected to the second mounting box (5), and the left end of the second turntable (66) is rotatably connected to the left end of the inner part of the third mounting box (62).

7. The axially adjustable clearance air gap inductor packaging structure according to claim 6, characterized in that: The bottom of the sliding rod (68) is fixedly connected to the connecting rod (63), and the micro-force contact probe (610) and the micro piezoelectric ceramic sheet (611) are both electrically connected to the external display screen.

8. The axially adjustable clearance air gap inductor packaging structure according to claim 7, characterized in that: The outer wall of the mounting bracket (69) and the outer wall of the fixing rod (612) are slidably connected to the bottom of the third mounting box (62), and the fixing rod (612) is located between the two sets of mounting brackets (69).

9. The axially adjustable clearance air gap inductor packaging structure according to claim 8, characterized in that: A limiting block is fixedly connected to the lower front end of the fixed plate (641), and the moving block (646) is slidably connected to the limiting block. The right front end of the fixed block (642) is rotatably connected to the first rotating rod (644).

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