A vibration-controlled current-stabilizing inductor

Abstract

The present invention discloses a vibration-controlled current-stabilizing inductor, which specifically relates to the technical field of inductors, including a base, a skeleton is arranged above the base, a magnetic core is arranged inside the skeleton, a coil is wound around the outside of the skeleton, two pins of the coil are led out from the bottom of the base, and a shielding cover is arranged outside the base. The present invention, through the arrangement of an internal vibration-proof component, on the one hand, limits the coil in the radial and axial directions by pushing a clamping plate and a pressure plate, thereby ensuring the stability of the coil structure, avoiding problems affecting the mechanical strength and vibration resistance of the inductor, and improving the stability of the current when the inductor is working. On the other hand, the air in the limiting cavity and the shielding cover can also play the role of a gas spring after the limiting is completed, which can have a buffering effect, further reducing the vibration of the coil, thereby avoiding the inductor from whistling during operation, helping to maintain the stability and performance of the circuit, and improving the service life of the inductor, and can be suitable for more applications.

Description

Technical Field

[0001] The present invention relates to the technical field of inductors, and more specifically, to a vibration-controlled current-stabilizing inductor. Background Art

[0002] An inductor is an electronic component whose main function is to generate induced electromotive force in a circuit, resist changes in current, store energy, etc. An inductor consists of a coil, a magnetic core, and terminals. The coil is the main body of the inductor, which is usually made of a wire wound around a magnetic core. In a circuit, an inductor acts like a capacitor, but it stores magnetic field energy instead of electric field energy.

[0003] During actual use of the inductor, when a periodic current passes through the inductor coil, an alternating magnetic field is generated. The inductor coil vibrates under the action of the alternating magnetic field and makes a sound. If this periodic frequency is within the hearing range of the human ear, it will produce a howling sound. The vibration may cause the parameters of the inductor (such as inductance value, quality factor, etc.) to change, affecting the normal operation of the circuit and may also cause interference to other electronic components. In addition, after installation, the inductor may have a gap between the circuit board and the gap, which may cause resonance. The inductor fixed by welding may cause the welding to fall off and be damaged after a long period of vibration, reducing the service life of the inductor.

[0004] The present invention provides a vibration-controlled current-stabilizing inductor, aiming to solve the problems that the inductor generates vibration and howling, affecting the normal operation of the circuit, and the gap causes resonance, resulting in welding shedding and damage of the inductor, thus reducing the service life of the inductor. Summary of the invention

[0005] The purpose of the present invention is to provide a vibration-controlled current-stabilizing inductor to solve the problems proposed in the above background technology that the inductor generates vibration and howling, affecting the normal operation of the circuit, and the gap causes resonance, resulting in the welding of the inductor falling off and damage, thereby reducing the service life of the inductor.

[0006] To achieve the above object, the present invention provides the following technical solution: a vibration-controlled current-stabilizing inductor, comprising a base, a frame is arranged above the base, a magnetic core is arranged inside the frame, a coil is wound around the outside of the frame, two pins of the coil are led out from the bottom of the base, a shielding cover is arranged outside the base, and further comprising:

[0007] An internal anti-vibration component, which is arranged on the inner side of the shielding cover and includes an electromagnet, a clamping plate and a pressing plate. When the electromagnet is energized, it can drive the clamping plate and the pressing plate to slide and limit the coil;

[0008] The external vibration-proof component is arranged at the bottom of the base, and includes a blocking plate and a push plate, which is used to cooperate with the internal vibration-proof component to drive the blocking plate to move, and push the push plate to move when vibrating.

[0009] Preferably, a driving groove is opened inside the base, the electromagnet is fixedly connected inside the driving groove, and two symmetrically arranged magnetic piston plates are slidably connected inside the driving groove on both sides of the electromagnet, and a first elastic member is connected between the sides of the two magnetic piston plates away from each other and the inner wall of the driving groove, and the electromagnet can push the two magnetic piston plates away from each other when energized.

[0010] Preferably, a limiting slide groove is provided at the bottom of the base, the sealing plate is sealingly and slidably connected in the limiting slide groove, a storage groove is provided inside the base, the push plate is sealingly and slidably connected in the storage groove, and the inside of the storage groove is provided with vibration expansion liquid and filling material on both sides of the push plate respectively.

[0011] Preferably, two air suction holes connected to the driving slide groove are opened inside the limiting slide groove, the two air suction holes are respectively located between the electromagnet and the two magnetic piston plates, and a connecting hole connected to the limiting slide groove is opened inside the storage groove.

[0012] Preferably, the blocking plate is used to block the connecting hole, and a pressure valve is provided in the connecting hole. When the vibration expansion liquid expands, the push plate can be pushed to discharge the sealing material inside the storage tank outward through the connecting hole and the pressure valve.

[0013] Preferably, the top of the base is fixedly connected to the inner side of the shielding cover with two symmetrically arranged limit cavities, and the interiors of the two limit cavities are sealed and slidably connected with sealing sliders. Two clamping plates are provided, and the two clamping plates are respectively fixedly connected to the sides of the two sealing sliders close to each other, and the clamping plates are used to clamp and limit the coil.

[0014] Preferably, the pressing plate is slidably connected between the outer wall of the frame and the inner wall of the shielding cover, the pressing plate is located above the coil, and a second elastic member is connected between a side of the pressing plate away from the coil and the inner wall of the shielding cover.

[0015] Preferably, two flow grooves are provided inside the shielding cover, and two air inlet holes are provided on the inner side of the shielding cover above the pressure plate, and the two air inlet holes are respectively connected to the two flow grooves, and diversion holes are provided on the sides of the two limit cavities away from each other, and the two diversion holes are respectively connected to the two flow grooves, and air outlet holes are provided at both ends of the driving slide groove, and the two air outlet holes are respectively connected to the two flow grooves.

[0016] Preferably, when the two magnetic piston plates slide away from each other inside the driving slide groove, the gas in the driving slide groove can be pushed into the two circulation grooves through the two air outlet holes, and the gas inside the two circulation grooves can enter the limiting cavity and the shielding cover respectively through the diversion hole and the air inlet hole.

[0017] Preferably, the base is made of magnetic shielding material, and the clamping plate, the pressure plate, the limiting cavity and the sealing slider are all made of heat-conducting materials.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The present invention, through the arrangement of the internal vibration-proof component, can ensure the stability of the coil structure by pushing the clamping plate and the pressure plate to limit the coil in the radial direction and the axial direction, avoid the problem of affecting the mechanical strength and vibration resistance of the inductor, thereby improving the stability of the current when the inductor is working; on the other hand, the air in the limiting cavity and the shielding cover can also play the role of a gas spring after the limiting is completed, which can have a buffering effect when the inductor vibrates, further reducing the vibration of the coil, thereby avoiding the inductor from whistling during operation, helping to maintain the stability and performance of the circuit, and improving the service life of the inductor, and can be suitable for more applications.

[0020] 2. The present invention provides an external vibration-proof component. During the operation of the inductor, when the inductor vibrates, the expansion liquid in the storage tank will expand and push the push plate to discharge the caulking material in the storage tank to fill the gap between the inductor and the circuit board, thereby firmly fixing the inductor on the circuit board, preventing the inductor from relative movement due to vibration, avoiding the welding of the inductor pins from falling off and being damaged, and effectively transmitting and dispersing the vibration energy, further reducing the vibration amplitude of the inductor, and increasing the service life of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the present invention.

[0022] Figure 2 It is an exploded view of the overall structure of the present invention.

[0023] Figure 3It is a partial position schematic diagram of the clamping plate of the present invention.

[0024] Figure 4 It is a schematic diagram of the structure of the coil part of the present invention.

[0025] Figure 5 It is a cross-sectional view of the overall structure of the present invention.

[0026] Figure 6 For the present invention Figure 5 A-section structure enlarged view.

[0027] The accompanying drawings are marked as follows: 1. base; 2. skeleton; 3. magnetic core; 4. coil; 5. shielding cover; 6. internal vibration isolation component; 61. electromagnet; 62. clamping plate; 63. pressure plate; 64. driving slide; 65. magnetic piston plate; 66. first elastic member; 67. limiting cavity; 68. sealing slider; 69. second elastic member; 610. circulation groove; 611. air inlet; 612. diverter hole; 613. air outlet; 7. external vibration isolation component; 71. sealing plate; 72. push plate; 73. limiting slide; 74. storage tank; 75. suction hole; 76. connecting hole; 77. pressure valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] During actual use of the inductor, when a periodic current passes through the inductor coil, an alternating magnetic field is generated. The inductor coil vibrates under the action of the alternating magnetic field and makes a sound. If this periodic frequency is within the hearing range of the human ear, it will produce a howling sound. The vibration may cause the parameters of the inductor (such as inductance value, quality factor, etc.) to change, affecting the normal operation of the circuit and may also cause interference to other electronic components.

[0031] refer to Figure 1 , Figure 2 and Figure 4 A vibration-controlled current-stabilizing inductor according to an embodiment of the present invention comprises a base 1, a skeleton 2 is arranged above the base 1, a magnetic core 3 is arranged inside the skeleton 2, a coil 4 is wound around the outside of the skeleton 2, two pins of the coil 4 are led out from the bottom of the base 1, and a shielding cover 5 is arranged outside the base 1.

[0032] refer to Figure 2 - Figure 6, and also includes an internal anti-vibration component 6, which is arranged on the inner side of the shielding cover 5, and includes an electromagnet 61, a clamping plate 62 and a pressing plate 63. When the electromagnet 61 is energized, it can drive the clamping plate 62 and the pressing plate 63 to slide and limit the coil 4;

[0033] refer to Figure 6 A driving slot 64 is provided inside the base 1, and the electromagnet 61 is fixedly connected inside the driving slot 64. Two symmetrically arranged magnetic piston plates 65 are slidably connected inside the driving slot 64 on both sides of the electromagnet 61. A first elastic member 66 is connected between the inner wall of the driving slot 64 and the side of the two magnetic piston plates 65 away from each other. After the electromagnet 61 is energized, it can push the two magnetic piston plates 65 away from each other. Two symmetrically arranged limiting cavities 67 are fixedly connected on the inner side of the shielding cover 5 at the top of the base 1. The insides of the two limiting cavities 67 are both sealed and slidably connected with sealing sliders 68. Two clamping plates 62 are provided. The two clamping plates 62 are respectively fixedly connected to the sides of the two sealing sliders 68 close to each other. The clamping plates 62 are used to align the coil 4. The clamping and limiting pressure plate 63 is slidably connected between the outer wall of the skeleton 2 and the inner wall of the shielding cover 5, the pressure plate 63 is located above the coil 4, and a second elastic member 69 is connected between the side of the pressure plate 63 away from the coil 4 and the inner wall of the shielding cover 5, the second elastic member 69 can be an elastic pull rope, and two flow grooves 610 are opened inside the shielding cover 5, and two air inlet holes 611 are opened on the inner side of the shielding cover 5 above the pressure plate 63, and the two air inlet holes 611 are respectively connected to the two flow grooves 610, and the two limiting cavities 67 are each provided with a diversion hole 612 on the side away from each other, and the two diversion holes 612 are respectively connected to the two flow grooves 610, and both ends of the driving slide groove 64 are provided with an air outlet hole 613, and the two air outlet holes 613 are respectively connected to the two flow grooves 610.

[0034] When the two magnetic piston plates 65 slide away from each other inside the driving slide groove 64, the gas in the driving slide groove 64 can be pushed into the two circulation grooves 610 through the two air outlet holes 613, and the gas inside the two circulation grooves 610 can enter the limiting cavity 67 and the shielding cover 5 respectively through the diversion hole 612 and the air inlet hole 611.

[0035] The base 1 is made of magnetic shielding material, such as ferrite material. The purpose of this setting is to prevent the electromagnet 61 from affecting the inductor after being energized. The clamping plate 62, the pressure plate 63, the limit cavity 67 and the sealing slider 68 are all made of heat-conducting materials. When the inductor is working, the heat generated by the coil 4 and the magnetic core 3 can be transferred to the shielding cover 5, and the heat is dissipated through the contact between the shielding cover 5 and the external air, thereby improving the heat dissipation effect.

[0036] During actual use, the electromagnet 61 will generate magnetic force after being energized. The electromagnet 61 can use the magnetic force to push the two magnetic piston plates 65 on both sides to slide inside the driving slide groove 64 in the direction away from the electromagnet 61, and compress the corresponding first elastic member 66. During the movement of the two magnetic piston plates 65, the gas in the driving slide groove 64 will be squeezed, so that it enters the two circulation grooves 610 through the two air outlet holes 613. Since a second elastic member 69 is connected between the pressure plate 63 and the shielding cover 5, the air in the circulation groove 610 will preferentially enter the limiting cavity 67 through the diversion hole 612 before overcoming the pulling force of the second elastic member 69, and push the sealing slider 68 to drive the clamping plate 62 to move toward the direction of the coil 4. At this time, the two clamping plates 62 will gradually contact the coil 4 and form a package, thereby clamping and limiting the coil 4 in the radial direction.

[0037] When the two clamping plates 62 come into contact with the coil 4 and cannot move further, the air pressure inside the two circulation grooves 610 will increase. At this time, the gas with increased air pressure can overcome the pulling force of the second elastic member 69. The gas in the two circulation grooves 610 will enter the shielding cover 5 through the air inlet 611, and push the pressure plate 63 to move downward and contact the top of the coil 4, so that it can cooperate with the base 1 to press and limit the coil 4 in the axial direction.

[0038] It should be noted that the purpose of limiting the coil 4 in the radial direction first is that when the coil 4 is directly pressed in the axial direction by the pressure plate 63, the pressure plate 63 may easily cause the winding of the coil 4 to be misaligned during the pressing process, resulting in the winding of the coil 4 to become loose. By limiting the coil 4 in the radial direction first, it can be ensured that the coil 4 will not be misaligned when being axially pressed, thereby avoiding the problem that the actual inductance value is inconsistent with the design value due to winding misalignment, affecting the performance of the circuit, and causing the coil 4 structure to be unstable, affecting the mechanical strength and vibration resistance of the inductor, thereby improving the stability of the current when the inductor is working.

[0039] In summary, through the setting of the internal anti-vibration component 6, on the one hand, by pushing the clamping plate 62 and the pressure plate 63 to limit the coil 4 in the radial direction and the axial direction, the stability of the coil 4 structure can be ensured, and the problem of affecting the mechanical strength and vibration resistance of the inductor can be avoided, thereby improving the stability of the current when the inductor is working. On the other hand, the air in the limiting cavity 67 and the shielding cover 5 can also act as a gas spring after the limiting is completed, which can have a buffering effect when the inductor vibrates, further reducing the vibration of the coil 4, thereby avoiding the inductor from whistling during operation, helping to maintain the stability and performance of the circuit, and improving the service life of the inductor. It can be suitable for more applications.

[0040] Embodiment 2

[0041] After installation, a gap may be created between the inductor and the circuit board, which may cause resonance. Long-term vibration of the inductor fixed by welding may cause the welding to fall off and be damaged, reducing the service life of the inductor. Therefore, this embodiment improves the device described in the above embodiment.

[0042] refer to Figure 5 and Figure 6 , also includes an external vibration-proof component 7, which is arranged at the bottom of the base 1, including a blocking plate 71 and a push plate 72, which is used to cooperate with the internal vibration-proof component 6 to drive the blocking plate 71 to move, and push the push plate 72 to move during vibration. A limiting slide groove 73 is provided at the bottom of the base 1, and the blocking plate 71 is sealingly and slidably connected in the limiting slide groove 73. A storage groove 74 is provided inside the base 1, and the push plate 72 is sealingly and slidably connected in the storage groove 74. The inside of the storage groove 74 is provided with vibration expansion liquid (for example, carbonated liquid containing a large amount of carbon dioxide gas) and filling material (for example, glue) on both sides of the push plate 72.

[0043] refer to Figure 6 Two air suction holes 75 connected to the driving slide 64 are provided inside the limiting slide 73, and the two air suction holes 75 are respectively located between the electromagnet 61 and the two magnetic piston plates 65. A connecting hole 76 connected to the limiting slide 73 is provided inside the storage groove 74. The sealing plate 71 is used to seal the connecting hole 76. A pressure valve 77 is provided in the connecting hole 76. When the vibration expansion liquid expands, it can push the push plate 72 to discharge the filling material inside the storage groove 74 through the connecting hole 76 and the pressure valve 77.

[0044] The purpose of providing the sealing plate 71 is to seal the connecting hole 76 when the inductor is not installed and not working, so as to prevent the sealing material from being discharged in advance due to external vibration and losing the sealing function.

[0045] The purpose of providing the pressure valve 77 is to discharge the filler material only when the inductor vibrates and needs to be fixed, so as to prevent the filler material from being discharged directly without vibration, thereby affecting the connection between the inductor and the circuit board and causing material waste.

[0046] During actual use, when the electromagnet 61 pushes the two magnetic piston plates 65 on both sides to slide inside the driving groove 64 in a direction away from the electromagnet 61 through magnetic force, the two magnetic piston plates 65 will draw the gas in the limiting groove 73 into the driving groove 64 through the two suction holes 75 during the movement. At this time, negative pressure will be generated in the limiting groove 73, and the negative pressure will cause the sealing plate 71 to move in the limiting groove 73 and release the blockage of the connecting hole 76.

[0047] When the inductor vibrates, the vibration expansion liquid in the storage slot 74 will expand. At this time, the expanded liquid will push the push plate 72 to discharge the filling material inside the storage slot 74 through the connecting hole 76 and the pressure valve 77, and then flow to the gap between the bottom of the base 1 and the circuit board through the limiting slide groove 73. The discharged filling material will gradually solidify after contact with the air, thereby filling the gap between the inductor and the circuit board, firmly fixing the inductor on the circuit board, preventing the inductor from relative movement due to vibration, avoiding the welding of the inductor pins from falling off and damage, and effectively transmitting and dispersing the vibration energy, further reducing the vibration amplitude of the inductor.

[0048] In summary, through the arrangement of the external vibration-proof component 7, during the operation of the inductor, when the inductor vibrates, the expansion liquid in the storage groove 74 will expand, and push the push plate 72 to discharge the filling material in the storage groove 74 to fill the gap between the inductor and the circuit board, thereby firmly fixing the inductor on the circuit board, preventing the inductor from relative movement due to vibration, and avoiding the welding of the inductor pins from falling off and being damaged, and effectively transmitting and dispersing the vibration energy, further reducing the vibration amplitude of the inductor, and improving the service life of the inductor.

[0049] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration-controlled current-stabilizing inductor, comprising a base, a frame is arranged above the base, a magnetic core is arranged inside the frame, a coil is wound around the outside of the frame, two pins of the coil are led out from the bottom of the base, and a shielding cover is arranged outside the base, characterized in that: Also includes: An internal anti-vibration component, which is arranged on the inner side of the shielding cover and includes an electromagnet, a clamping plate and a pressing plate. When the electromagnet is energized, it can drive the clamping plate and the pressing plate to slide, and can limit the position of the coil; An external vibration-proof component, which is arranged at the bottom of the base and includes a blocking plate and a push plate, and is used to cooperate with the internal vibration-proof component to drive the blocking plate to move, and to push the push plate to move when vibrating; A driving slot is provided inside the base, the electromagnet is fixedly connected inside the driving slot, two symmetrically arranged magnetic piston plates are slidably connected inside the driving slot on both sides of the electromagnet, a first elastic member is connected between the sides of the two magnetic piston plates that are away from each other and the inner wall of the driving slot, and the electromagnet can push the two piston plates away from each other when energized; A limit slide groove is provided at the bottom of the base, the blocking plate is sealingly and slidably connected in the limit slide groove, a storage groove is provided inside the base, the push plate is sealingly and slidably connected in the storage groove, and vibration expansion liquid and caulking material are respectively provided inside the storage groove on both sides of the push plate; The limiting slide groove is provided with two air suction holes connected with the driving slide groove, the two air suction holes are respectively located between the electromagnet and the two magnetic piston plates, and the storage groove is provided with a connecting hole connected with the limiting slide groove; The blocking plate is used to block the communicating hole, and a pressure valve is provided in the communicating hole. When the vibration expansion liquid expands, the push plate can be pushed to discharge the caulking material inside the storage tank outward through the communicating hole and the pressure valve; The top of the base is fixedly connected to the inner side of the shielding cover with two symmetrically arranged limiting cavities, the interiors of the two limiting cavities are sealed and slidably connected with sealing sliders, and the clamping plates are provided with two, and the two clamping plates are respectively fixedly connected to the sides of the two sealing sliders close to each other, and the clamping plates are used to clamp and limit the coil; The pressing plate is slidably connected between the outer wall of the frame and the inner wall of the shielding cover, the pressing plate is located above the coil, and a second elastic member is connected between a side of the pressing plate away from the coil and the inner wall of the shielding cover; Two flow grooves are provided inside the shielding cover, and two air inlet holes are provided on the inner side of the shielding cover above the pressure plate, and the two air inlet holes are respectively connected to the two flow grooves, and diversion holes are provided on the sides of the two limit cavities away from each other, and the two diversion holes are respectively connected to the two flow grooves, and air outlet holes are provided at both ends of the driving slide groove, and the two air outlet holes are respectively connected to the two flow grooves.

2. The vibration-controlled current-stabilizing inductor according to claim 1, characterized in that: When the two magnetic piston plates slide away from each other inside the driving slide groove, they can squeeze the gas in the driving slide groove and push it into the two circulation grooves through the two air outlet holes. The gas inside the two circulation grooves can enter the limiting cavity and the inside of the shielding cover respectively through the diversion hole and the air inlet hole.

3. The vibration-controlled current-stabilizing inductor according to claim 1, characterized in that: The base is made of magnetic shielding material, and the clamping plate, the pressing plate, the limiting cavity and the sealing sliding block are all made of heat-conducting materials.

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