Embedded inductance fixture

Abstract

The utility model relates to the technical field of inductor device, especially a kind of embedded inductor fixing device, including the load ring of installation on circuit board, and load ring inside installation inductor, the lower end of the load ring is fixedly connected circuit board by installation component, this fixed device is set a pair of U-shaped plate in load ring and is set triangular dog claw in U-shaped plate inside, to be fixed to inductor by triangular dog claw cooperation U-shaped plate, effectively avoid inductor to occur when vibrating and drive lead bending, influence lead service life, and when dismounting, pull out retaining wall can engage the inside end of two U-shaped plates, inductor can be automatically ejected by spring piece, and then directly on pull down load ring, dismounting is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of inductor technology, and in particular to an embedded inductor fixing device. Background Technology

[0002] To ensure the stable operation of circuits and electronic systems, it is often necessary to add filter inductors to the input and output ports of switching power supplies. Existing baseless core inductors use embedded mounting on PCB boards to meet the structural requirements of small product size. However, since there are no fixing devices for the pins, the pins are prone to misalignment during handling and assembly in the production process.

[0003] An embedded inductor and a circuit board using the inductor are disclosed in CN219143949U. By adopting an embedded structural design, the leaded inductor is embedded in the carrier structure, and the lead of the leaded inductor is installed in the positioning groove of the carrier structure to form the pin of the embedded inductor. This ensures precision and efficiency during production and installation. At the same time, a second inductor hole is provided on the PCB board, and the embedded inductor is embedded in the second inductor hole. A through hole corresponding to the pin of the embedded inductor is provided on the PCB board, and the pin of the embedded inductor passes through the through hole to achieve a fixed connection with the PCB board. This effectively reduces the overall size of the inductor after it is installed on the PCB, and meets the market demand for small size, high current and high inductance.

[0004] The aforementioned prior art fixes the lead wire of the leaded inductor by installing the lead wire of the leaded inductor into the positioning groove of the bearing structure to form the PIN pin of the embedded inductor. However, it cannot fix the leaded inductor itself in the vertical direction, and the installation is not stable enough. When subjected to vibration, the leaded inductor itself will swing up and down relative to the lead wire, causing the lead wire to bend and affecting the service life of the lead wire. Summary of the Invention

[0005] The purpose of this invention is to solve the shortcomings of existing technologies, such as the inability to stably install the lead inductor itself, which causes the lead inductor to shake and bend the lead wire during vibration, affecting the service life of the lead wire, and proposes an embedded inductor fixing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design an embedded inductor fixing device, including a carrier ring mounted on a circuit board, and an inductor installed inside the carrier ring, the lower end of the carrier ring being fixedly connected to the circuit board through a mounting component; A pair of U-shaped plates are fixedly connected inside the bearing ring. An inductor is inserted into the inside of the U-shaped plates through a pop-out component. A triangular claw is fixedly provided on the inner wall of the pair of U-shaped plates on the side close to each other. The bottom of the triangular claw is engaged with an inductor. The lower ends of the pair of U-shaped plates are inserted into receiving holes on the circuit board, and a retaining wall is installed between the pair of U-shaped plates by a limiting component.

[0007] Furthermore, the mounting assembly includes several limiting plates fixedly connected to the bottom of the bearing ring, and the several limiting plates are inserted into the receiving hole. A locking block is fixedly provided on the outer side wall of the limiting plate, and the top of the locking block abuts against the circuit board. Both the upper and lower ends of the locking block are chamfered. An inductor is slidably connected to the inner side wall of the limiting plate.

[0008] Furthermore, a support plate is fixedly connected to the lower end of each of the limiting plates, and the top of the support plate abuts against an inductor.

[0009] Furthermore, the pop-out component includes a groove formed on the inner wall of the bottom of the U-shaped plate, and a spring piece is fixedly installed on the inner wall of the groove, with the upper end of the spring piece abutting against an inductor.

[0010] Furthermore, the limiting component includes triangular slots opened on both sides of the retaining wall, slots opened near the near ends of the pair of U-shaped plates, the retaining wall being inserted into the inside of the slots, and triangular blocks being fixedly connected to the slot walls of the pair of slots away from each other, and the pair of triangular blocks being respectively engaged in the two triangular slots.

[0011] Furthermore, two pairs of positioning grooves are provided on the outer wall of the bearing ring, and two pairs of inductor leads are respectively installed inside the two pairs of positioning grooves. The lower ends of the two pairs of positioning grooves are respectively aligned with two pairs of through holes on the circuit board for inserting leads.

[0012] The embedded inductor fixing device proposed in this utility model has the following advantages: the fixing device sets a pair of U-shaped plates inside the bearing ring and sets triangular claws on the inner side of the U-shaped plates, thereby fixing the inductor through the triangular claws cooperating with the U-shaped plates. This effectively prevents the inductor from shaking during vibration and causing the lead wire to bend, which would affect the lead wire's service life. Moreover, when disassembling, pulling out the retaining wall allows the inner ends of the two U-shaped plates to engage, which allows the inductor to be automatically ejected by the spring clips, and then the lower bearing ring can be directly pulled up and down, making disassembly more convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is an enlarged structural diagram of region A of this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1. Circuit board; 11. Receiving hole; 12. Through hole; 2. Bearing ring; 3. Inductor; 31. Lead wire; 4. Mounting assembly; 41. Limiting plate; 42. Locking block; 43. Chamfer; 44. Support plate; 5. U-shaped plate; 6. Pop-out assembly; 61. Groove; 62. Spring piece; 7. Triangular claw; 8. Limiting assembly; 81. Triangular slot; 82. Slot; 83. Triangular locking block; 9. Retaining wall; 10. Positioning groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-4 As one embodiment of this utility model, it discloses an embedded inductor fixing device, including a support ring 2 mounted on a circuit board 1, and an inductor 3 installed inside the support ring 2. The lower end of the support ring 2 is fixedly connected to the circuit board 1 through a mounting component 4. A pair of U-shaped plates 5 are fixedly connected inside the bearing ring 2. An inductor 3 is inserted into the inside of the U-shaped plates 5 through a pop-out component 6. A triangular claw 7 is fixedly provided on the inner wall of the pair of U-shaped plates 5 on the side close to each other. The bottom of the triangular claw 7 is engaged with the inductor 3. Preferably, the bearing ring 2, the U-shaped plates 5 and the triangular claw 7 are integrally formed plastic parts. The pair of U-shaped plates 5 are both disposed between the two sets of windings on the inductor 3. The lower ends of the pair of U-shaped plates 5 are inserted into the receiving holes 11 on the circuit board 1. A retaining wall 9 is installed between the pair of U-shaped plates 5 through a limiting component 8. Preferably, the retaining wall 9 is disposed between the two sets of windings on the inductor 3. During installation, the bearing ring 2 is fixed to the circuit board 1 by the mounting component 4, and the bearing ring 2 is concentric with the receiving hole 11. Then, the left and right ends of the inductor 3 are respectively inserted into the two limiting slots of the two U-shaped plates 5. The two U-shaped plates 5 prevent the inductor 3 from moving left, right, back and forth and downward. At the same time, when the inductor 3 is inserted, it first abuts against and squeezes the inclined surface of the top of the triangular claw 7, so that the inner ends of the two U-shaped plates 5 bend inward, thereby driving the two triangular claws 7 to move to the inside of the inductor 3. After the inductor 3 is fully inserted into the two U-shaped plates 5, the inner ends of the U-shaped plates 5 return to vertical and drive the two triangular claws 7 to lock on the top of the inductor 3, thereby completing the fixation of the inductor 3.

[0017] Furthermore, the mounting assembly 4 includes several limiting plates 41 fixedly connected to the bottom of the bearing ring 2, and the several limiting plates 41 are inserted into the receiving hole 11. A locking block 42 is fixedly provided on the outer side wall of the limiting plate 41, and the top of the locking block 42 abuts against the circuit board 1. Both the upper and lower ends of the locking block 42 are provided with chamfers 43. The inner side wall of the limiting plate 41 is slidably connected to the inductor 3.

[0018] Furthermore, the lower ends of several limiting plates 41 are respectively fixedly connected to support plates 44, and the top of the support plates 44 abuts against the inductor 3. Preferably, several limiting plates 41 are arranged in a circumferential array in the receiving hole 11. Both the limiting plates 41 and the support plates 44 are plastic parts integrally formed with the bearing ring 2. The lower end of the limiting plate 41 is provided with a rounded corner on the outer side. When installing the bearing ring 2, several limiting plates 41 are inserted into the receiving hole 11. During this process, the chamfer 43 at the lower end of the locking block 42 first abuts against and presses the edge of the receiving hole 11, thereby being pressed inward and causing the limiting plate 41 to bend, so that the locking block 42 can enter the receiving hole 11. When the locking block 42 enters below the circuit board 1, the limiting plate 41 returns to its original position and causes the locking block 42 to be locked below the circuit board 1, clamping the circuit board 1 between the locking block 4 and the bearing ring 2, and fixing the bearing ring 2 on the circuit board 1. At the same time, after the inductor 3 is inserted into the U-shaped plate 5, the outer wall of the inductor 3 abuts against the limiting plate 41, so as to prevent the limiting plate 41 from bending inward and causing the locking block 4 to detach from the circuit board 1, thus maintaining the stability of the bearing ring 2 installation. After removing the inductor 3, the bearing ring 2 can be pulled up directly so that the chamfer 43 at the upper end of the locking block 42 first abuts against and presses against the edge of the receiving hole 11, thereby being pressed inward and causing the limiting plate 41 to bend, so that the locking block 42 can enter the receiving hole 11 and the bearing ring 3 can be removed smoothly.

[0019] In some embodiments, the pop-out component 6 includes a groove 61 formed on the inner wall of the bottom of the U-shaped plate 5, and a spring piece 62 is fixedly installed on the inner wall of the groove 61. The upper end of the spring piece 62 abuts against the inductor 3. Preferably, the bottom of the spring piece 62 is bonded to the U-shaped plate 5. After the two U-shaped plates 5 are pinched together inward by two fingers to bend their upper ends and bring them closer together, the two triangular claws 7 disengage from the upper end of the inductor 3, and the spring piece 62 automatically pushes the inductor 3 upward to disengage it from the bearing ring 2, thus completing the disassembly.

[0020] Specifically, the limiting component 8 includes triangular slots 81 opened on both sides of the retaining wall 9, and slots 82 opened near the near ends of the pair of U-shaped plates 5. The retaining wall 9 is inserted into the inside of the slots 82. Triangular blocks 83 are fixedly connected to the slot walls of the pair of slots 82 away from each other, and the pair of triangular blocks 83 are respectively engaged in the two triangular slots 81. After the two ends of the retaining wall 9 are vertically inserted into the two slots 82, the two triangular blocks 83 are respectively engaged in the two triangular slots 81. Thus, the two slots 82 prevent the retaining wall 9 from moving forward, backward, left, or right and tilting. The triangular blocks 83 cooperate with the triangular slots 81 to prevent the retaining wall 9 from moving upward and dislodging from the slots 82 when vibrating, thus completing the installation of the retaining wall 9. At the same time, the retaining wall 9 is inserted into the slot 82 and prevents the U-shaped plate 5 from bending, effectively avoiding accidental bending of the inner end of the U-shaped plate 5, ensuring the stability of the triangular claw 7 and the U-shaped plate 5 in fixing the inductor 3. The retaining wall 9 is used for electrical isolation between the two sets of windings on the inductor 3.

[0021] It should be noted that two pairs of positioning grooves 10 are provided on the outer wall of the bearing ring 2. Two pairs of leads 31 of the inductor 3 are installed inside the two pairs of positioning grooves 10 respectively. The lower ends of the two pairs of positioning grooves 10 are aligned with two pairs of through holes 12 on the circuit board 1 for inserting the leads 31. During installation, glue is injected into the positioning groove 10, and then the two pairs of leads 31 are respectively embedded into the two pairs of positioning grooves 10. When the bearing ring 2 is fixedly installed on the circuit board 1, the lower ends of the two pairs of leads 31 are respectively inserted into the two pairs of through holes 12 on the circuit board 1.

[0022] Working method: During installation, several limiting plates 41 are inserted into the receiving hole 11. The chamfer 43 at the lower end of the locking block 42 is squeezed by the edge of the receiving hole 11 and drives the limiting plate 41 to bend. When the locking block 42 enters below the circuit board 1, the limiting plate 41 returns to its original position and drives the locking block 42 to be locked below the circuit board 1, clamping the circuit board 1 between the locking block 4 and the bearing ring 2, thereby fixing the bearing ring 2 on the circuit board 1 and making the bearing ring 2 concentric with the receiving hole 11. Next, insert the left and right ends of the inductor 3 into the two limiting slots formed by the two U-shaped plates 5 respectively. The two U-shaped plates 5 prevent the inductor 3 from moving left, right, forward, backward, or downward. At the same time, when the inductor 3 is inserted, it first abuts against and squeezes the inclined surface at the top of the triangular claw 7, causing the inner ends of the two U-shaped plates 5 to bend inward, thereby driving the two triangular claws 7 to move to the inside of the inductor 3. After the inductor 3 is fully inserted into the two U-shaped plates 5, the inner ends of the U-shaped plates 5 return to vertical and drive the two triangular claws 7 to lock on the top of the inductor 3, thereby completing the fixation of the inductor 3. Finally, after the two ends of the retaining wall 9 are vertically inserted into the two slots 82, the two triangular blocks 83 are respectively engaged in the two triangular slots 81. During disassembly, first pull off the lower retaining wall 9, then use two fingers to pinch the two U-shaped plates 5 inwards to bend their upper ends and bring them closer together. After the two triangular claws 7 disengage from the upper end of the inductor 3, the spring piece 62 automatically pushes the inductor 3 upwards, causing it to disengage from the bearing ring 2. By directly pulling up the bearing ring 2, the chamfer 43 at the upper end of the locking block 42 will first abut against and press against the edge of the receiving hole 11, thereby being pressed inwards and causing the limiting plate 41 to bend, so that the locking block 42 can enter the receiving hole 11 and the bearing ring 3 can be removed smoothly.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An embedded inductor fixing device, comprising a support ring (2) mounted on a circuit board (1), wherein an inductor (3) is installed inside the support ring (2), characterized in that: The lower end of the bearing ring (2) is fixedly connected to the circuit board (1) by the mounting assembly (4); A pair of U-shaped plates (5) are fixedly connected inside the bearing ring (2). An inductor (3) is inserted into the inside of the U-shaped plate (5) through a pop-out component (6). A triangular claw (7) is fixedly provided on the inner wall of the pair of U-shaped plates (5) close to each other. The bottom of the triangular claw (7) is engaged with the inductor (3). The lower ends of the pair of U-shaped plates (5) are inserted into the receiving holes (11) on the circuit board (1), and a retaining wall (9) is installed between the pair of U-shaped plates (5) by a limiting component (8).

2. The embedded inductor fixing device according to claim 1, characterized in that: The mounting assembly (4) includes several limiting plates (41) fixedly connected to the bottom of the bearing ring (2), and the several limiting plates (41) are inserted into the receiving hole (11). A locking block (42) is fixedly provided on the outer side wall of the limiting plate (41), and the top of the locking block (42) abuts against the circuit board (1). Chamfers (43) are provided at both the upper and lower ends of the locking block (42). An inductor (3) is slidably connected to the inner side wall of the limiting plate (41).

3. The embedded inductor fixing device according to claim 2, characterized in that: The lower ends of several of the limiting plates (41) are respectively fixedly connected to a support plate (44), and the top of the support plate (44) abuts against an inductor (3).

4. The embedded inductor fixing device according to claim 1, characterized in that: The pop-out component (6) includes a groove (61) formed on the inner wall of the bottom of the U-shaped plate (5), and a spring piece (62) is fixedly installed on the inner wall of the groove (61), with the upper end of the spring piece (62) abutting against the inductor (3).

5. The embedded inductor fixing device according to claim 1, characterized in that: The limiting component (8) includes triangular slots (81) on both sides of the retaining wall (9), and slots (82) are provided at the near ends of the pair of U-shaped plates (5). The retaining wall (9) is inserted into the slots (82). Triangular blocks (83) are fixedly connected to the slot walls of the pair of slots (82) away from each other. The pair of triangular blocks (83) are respectively engaged in the two triangular slots (81).

6. The embedded inductor fixing device according to claim 1, characterized in that: Two pairs of positioning grooves (10) are provided on the outer wall of the bearing ring (2). Two pairs of leads (31) of the inductor (3) are installed inside the two pairs of positioning grooves (10). The lower ends of the two pairs of positioning grooves (10) are aligned with two pairs of through holes (12) on the circuit board (1) for inserting the leads (31).

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