A flat wire inductor

Abstract

The application discloses a flat wire inductor, and particularly relates to the technical field of inductors, which comprises a base, a magnetic core and a lead coil, characterized in that a sliding groove is formed in the base, the magnetic core is slidingly connected in the sliding groove, the lead coil is wound on the outer side of the magnetic core, and the inductor further comprises a shockproof assembly and a clamping assembly. When the lead coil is electrified, the magnetic core generates a magnetic force which is the same as the magnetic force of the first and second permanent magnets, according to the principle of repulsion between the same nature, the magnetic core is suspended between the first and second permanent magnets, and the inductor can be buffered when vibrating. The lead coil is fixed on the magnetic core, and when the external part vibrates for a long time, the vibration force can move the magnetic core and the lead coil together. The two pins of the lead coil slide in the conductive sleeve, and the conductive rod is fixed, so that the risk of deformation or fracture of the welding point of the conductive rod caused by external vibration is avoided, and the service life of the inductor is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inductors, and more particularly, to a flat wire inductor. BACKGROUND

[0002] An inductor is a passive electronic component that works based on the principle of electromagnetic induction, mainly used for storing magnetic field energy, filtering, adjusting current changes, etc., and the flat wire inductor is widely used in high-frequency power supplies, automotive electronics, industrial equipment, etc. due to its low DC resistance, high current carrying capacity and good heat dissipation characteristics.

[0003] During use, the flat wire inductor may have a risk of deformation or fracture of the welding point due to its compact structure, multi-layer stacking or flat coil under long-term mechanical vibration, impact environment (such as automotive electronics), which may cause a decrease in performance or an open circuit risk, and the flat wire inductor usually uses multi-layer thin sheet conductors, which have low rigidity and are more likely to generate noise due to electromagnetic force during vibration, which affects the normal operation of the circuit and may also cause interference to other electronic components.

[0004] The present application provides a flat wire inductor to solve the problems of vibration and noise of the inductor, affecting the normal operation of the circuit, and deformation or fracture of the welding point due to vibration, reducing the service life of the inductor. SUMMARY

[0005] The present application aims to provide a flat wire inductor to solve the problems of vibration and noise of the inductor, affecting the normal operation of the circuit, and deformation or fracture of the welding point due to vibration, reducing the service life of the inductor as described in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a flat wire inductor comprising a base, a magnetic core and a conductor coil, wherein a sliding groove is formed in the base, the magnetic core is slidingly connected in the sliding groove, and the conductor coil is wound on the outside of the magnetic core, further comprising:

[0007] A shockproof assembly is arranged on the inner side of the base and comprises a first permanent magnet and a second permanent magnet, wherein the magnetic core generates a magnetic force after the conductor coil is energized, the first permanent magnet and the second permanent magnet have the same magnetic properties as the end of the magnetic core, and repel each other to make the magnetic core float, and the magnetic core drives the conductor coil to move together when vibrating;

[0008] A clamping assembly is arranged on both sides of the conductor coil and comprises a first clamping plate and a second clamping plate, which is used to drive the conductor coil to move in cooperation with the shockproof assembly and can limit and clamp the conductor coil.

[0009] Preferably, the first permanent magnet and the second permanent magnet are both slidingly connected in the sliding groove and arranged at two ends of the magnetic core, and an elastic member is connected between the first permanent magnet, the second permanent magnet and the end of the sliding groove, the outer wall of the first permanent magnet is fixedly connected with symmetrically arranged first connecting rods, and the outer wall of the second permanent magnet is fixedly connected with symmetrically arranged second connecting rods.

[0010] Preferably, a connecting groove is symmetrically arranged on both sides of the sliding groove, and the first connecting rods and the second connecting rods extend into the connecting groove and are linked with the clamping assembly.

[0011] Preferably, two communication grooves are arranged in the base, and an electrically conductive sleeve is fixedly connected in each communication groove, and two pins of the lead coil are slidingly arranged in the electrically conductive sleeve.

[0012] Preferably, a fixed groove corresponding in position to the communication groove is arranged on the outer wall of the base, and an electrically conductive rod is fixedly connected in the fixed groove, and one end of the electrically conductive rod is in contact with the outer wall of the electrically conductive sleeve.

[0013] Preferably, the first clamping plate and the second clamping plate are both slidingly connected to the outer wall of the magnetic core, the outer wall of the first clamping plate is fixedly connected with symmetrically arranged first fixed rods, and the first fixed rods are fixedly connected with the second connecting rods.

[0014] Preferably, a communication opening is arranged on each first fixed rod, the outer wall of the second clamping plate is fixedly connected with symmetrically arranged second fixed rods, the second fixed rods pass through the communication openings and are fixedly connected with the first connecting rods, and the first fixed rods and the second fixed rods are both slidingly connected in the connecting groove.

[0015] Preferably, the elastic member is a spiral spring or a silica gel elastic gasket, the elastic coefficient of which is matched with the magnetic repulsion force, so as to ensure that the magnetic core is in a suspended balance.

[0016] Preferably, the base is made of an insulating material, and the first clamping plate and the second clamping plate are both made of a heat-conducting material, so as to conduct the heat of the lead coil to the base.

[0017] Preferably, the clamping surfaces of the first clamping plate and the second clamping plate are provided with a flexible heat-conducting layer, so as to buffer vibration and enhance heat conduction.

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

[0019] 1、through the setting of the shockproof assembly, when the coil is energized, the magnetic core will generate a magnetic force, and the magnetic core is provided with a first permanent magnet and a second permanent magnet, which generates the same magnetic force as the first permanent magnet and the second permanent magnet, according to the principle of repulsion between same nature, the magnetic core will be suspended between the first permanent magnet and the second permanent magnet, and can play a buffering effect when the inductor vibrates, and the magnetic core is fixed with the coil, when the external vibrates for a long time, the vibration force will make the magnetic core move together with the coil, the two pins of the coil slide in the conductive sleeve, and the conductive rod is fixed, which avoids the risk of deformation or fracture of the welding point of the conductive rod due to external vibration, thereby improving the service life of the inductor;

[0020] 2、through the setting of the clamping assembly, the coil is clamped by the first clamping plate and the second clamping plate, when the magnetic core moves upwards with the coil, the coil will move against the second clamping plate, and there is a repulsive force between the magnetic core and the second permanent magnet, which will push the second permanent magnet upwards, the second permanent magnet will move together with the first clamping plate through the first fixed rod when the second permanent magnet moves, when the magnetic core moves downwards with the coil, the same reason, will always clamp the coil, thereby avoiding the noise generated by the coil due to the vibration of the inductor, improving the performance and service life of the inductor. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is an exploded schematic diagram of the overall structure of the present application;

[0023] Figure 3 It is a structure sectional view of the shockproof assembly of the present application;

[0024] Figure 4 It is a structure sectional view of the clamping assembly of the present application;

[0025] Figure 5 It is the A part structure of the present application Figure 3 enlarged view.

[0026] The reference signs are: 1, base; 11, sliding groove; 12, magnetic core; 13, coil; 2, shockproof assembly; 21, first permanent magnet; 22, second permanent magnet; 23, first connecting rod; 24, second connecting rod; 25, connecting groove; 26, communication groove; 27, conductive sleeve; 28, fixed groove; 29, conductive rod; 3, clamping assembly; 31, first clamping plate; 32, second clamping plate; 33, first fixed rod; 34, communication port; 35, second fixed rod. DETAILED DESCRIPTION

[0027] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. Embodiment 1

[0028] During use, the flat wire inductor has a compact structure, but the multilayer stacking or flat coil may be deformed or the welding point may be broken under long-time mechanical vibration and impact environment (such as automobile electronics), which may cause performance degradation or open circuit.

[0029] With reference to Figure 1 and Figure 2 , an embodiment of the present application provides a flat wire inductor, which comprises a base 1, a magnetic core 12 and a lead coil 13, characterized in that a sliding groove 11 is formed in the base 1, the magnetic core 12 is slidingly connected in the sliding groove 11, and the lead coil 13 is wound on the outside of the magnetic core 12.

[0030] With reference to Figures 1 to 3 , the flat wire inductor further comprises a shockproof assembly 2 arranged on the inner side of the base 1, which comprises a first permanent magnet 21 and a second permanent magnet 22. When the lead coil 13 is electrified, the magnetic core 12 generates a magnetic force. The first permanent magnet 21 and the second permanent magnet 22 are both magnetically identical to the end of the magnetic core 12, repel each other, and make the magnetic core 12 float up. When vibrating, the magnetic core 12 drives the lead coil 13 to move together.

[0031] The magnetic core 12 and the first permanent magnet 21 and the second permanent magnet 22 at both ends form a floating buffer structure through the same magnetic repulsion force. The magnetic repulsion force can dynamically adjust the repulsion distance when vibrating, so as to realize non-contact damping.

[0032] With reference to Figure 2 and Figure 4 , the first permanent magnet 21 and the second permanent magnet 22 are both slidingly connected in the sliding groove 11 and arranged at both ends of the magnetic core 12. The first permanent magnet 21 and the second permanent magnet 22 are both connected with elastic members between the end of the sliding groove 11. The elastic members are helical springs or silica gel elastic gaskets, the elastic coefficients of which are matched with the magnetic repulsion force, so as to ensure that the magnetic core 12 is in floating balance. The outer wall of the first permanent magnet 21 is fixedly connected with first connecting rods 23 arranged in symmetry. The outer wall of the second permanent magnet 22 is fixedly connected with second connecting rods 24 arranged in symmetry. The sliding groove 11 is symmetrically provided with connecting grooves 25 on both sides. The first connecting rods 23 and the second connecting rods 24 respectively extend into the connecting grooves 25 and are linked with a clamping assembly 3.

[0033] With reference to Figure 2 and Figure 5The base 1 is provided with two communication grooves 26, each of which is fixedly connected with a conductive sleeve 27, and the two pins of the lead coil 13 are slidably arranged in the conductive sleeve 27. The outer wall of the base 1 is provided with a fixed groove 28 corresponding to the number and position of the communication grooves 26, and the fixed groove 28 is fixedly connected with a conductive rod 29, one end of the conductive rod 29 being in contact with the outer wall of the conductive sleeve 27.

[0034] The magnetic core 12 is suspended to decouple the rigid connection between the lead coil 13 and the base 1, and the vibration energy is dispersed through the magnetic field to avoid being directly transmitted to the welding point, thereby significantly reducing the risk of welding point fracture.

[0035] The base 1 is made of an insulating material, such as a ceramic material, which has excellent insulation, high temperature resistance, and high thermal conductivity, and is helpful to effectively and quickly dissipate the heat generated by the lead coil 13.

[0036] When the lead coil 13 is energized, the magnetic core 12 generates a magnetic force, and the magnetic core 12 is provided with a first permanent magnet 21 and a second permanent magnet 22 at both ends, which generate the same magnetic force as the first permanent magnet 21 and the second permanent magnet 22. According to the principle of repulsion between same poles, the magnetic core 12 is suspended between the first permanent magnet 21 and the second permanent magnet 22, which can buffer the vibration of the inductor. The lead coil 13 is fixed to the magnetic core 12, and when the external vibration lasts for a long time, the vibration force will move the lead coil 13 together with the magnetic core 12. The two pins of the lead coil 13 are slidably arranged in the conductive sleeve 27, and the conductive rod 29 is fixed, which avoids the risk of deformation or fracture of the welding point of the conductive rod 29 due to external vibration, thereby improving the service life of the inductor. Embodiment 2

[0037] The flat wire inductor usually adopts a multi-layer sheet conductor, which has low rigidity and is more likely to produce noise due to electromagnetic force during vibration, which affects the normal operation of the circuit and may also cause interference to other electronic components. Therefore, the device described in the above embodiment is improved.

[0038] Reference Figures 2 to 4 The clamping assembly 3 is arranged on both sides of the lead coil 13 and includes a first clamping plate 31 and a second clamping plate 32, which are used to move the lead coil 13 together with the shockproof assembly 2 and can limit and clamp the lead coil 13.

[0039] Reference Figure 3 and Figure 4 The first clamping plate 31 and the second clamping plate 32 are slidably connected to the outer wall of the magnetic core 12, the outer wall of the first clamping plate 31 is fixedly connected with a first fixed rod 33 arranged in symmetry, and the first fixed rod 33 is fixedly connected with the second connecting rod 24.

[0040] Reference Figure 3 andFigure 4 A communication port 34 is formed in each first fixed rod 33. The outer wall of the second clamping plate 32 is fixedly connected with symmetrically arranged second fixed rods 35. The second fixed rods 35 pass through the communication ports 34 and are fixedly connected with the first connecting rods 23. The first fixed rods 33 and the second fixed rods 35 are both slidingly connected in the connecting grooves 25.

[0041] The clamping force of the first clamping plate 31 and the second clamping plate 32 is adjusted in real time according to vibration. The micro displacement of the lead coil 13 caused by electromagnetic force or mechanical vibration is effectively inhibited. The friction or resonance noise of the lead coil 13 and the magnetic core 12 is reduced. The deformation of the multi-layer lead coil 13 caused by insufficient rigidity is avoided.

[0042] The first clamping plate 31 and the second clamping plate 32 are both made of heat-conducting material and are used to conduct the heat of the lead coil 13 to the base 1. The clamping surfaces of the first clamping plate 31 and the second clamping plate 32 are provided with flexible heat-conducting layers, which are used to buffer vibration and enhance heat conduction.

[0043] Through the arrangement of the clamping assembly 3, the lead coil 13 is clamped by the first clamping plate 31 and the second clamping plate 32. When the magnetic core 12 moves upward with the lead coil 13, the lead coil 13 moves against the second clamping plate 32. There is a repulsive force between the magnetic core 12 and the second permanent magnet 22, which pushes the second permanent magnet 22 to move upward. When the second permanent magnet 22 moves, it pulls the first clamping plate 31 to move together through the first fixed rod 33. When the magnetic core 12 moves downward with the lead coil 13, the lead coil 13 is always clamped, thereby avoiding the noise generated by the lead coil 13 due to the vibration of the inductor, and improving the performance and service life of the inductor.

[0044] Finally, the above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flat wire inductor, comprising a base, a magnetic core, and a conductor coil, characterized in that, The base has a sliding groove, the magnetic core is slidably connected in the sliding groove, the conductor coil is wound around the outside of the magnetic core, and the base also includes: The shock-absorbing component is disposed inside the base and includes a first permanent magnet and a second permanent magnet. When the conductor coil is energized, it will cause the magnetic core to generate magnetic force. The first permanent magnet and the second permanent magnet are both magnetically identical to the end of the magnetic core, and they will repel each other to suspend the magnetic core. When vibrating, the magnetic core will drive the conductor coil to move together. A clamping assembly is disposed on both sides of the conductive coil, including a first clamping plate and a second clamping plate, which is used to cooperate with the anti-vibration assembly to drive the conductive coil to move and can limit and clamp the conductive coil. The first permanent magnet and the second permanent magnet are slidably connected in the sliding groove and disposed at both ends of the magnetic core. An elastic element is connected between the first permanent magnet and the end of the sliding groove. A first connecting rod arranged symmetrically is fixedly connected to the outer wall of the first permanent magnet, and a second connecting rod arranged symmetrically is fixedly connected to the outer wall of the second permanent magnet. The sliding groove has symmetrical connecting grooves on both sides, and the first connecting rod and the second connecting rod extend into the connecting grooves respectively and are linked with the clamping assembly; The base has two connecting slots, and a conductive sleeve is fixedly connected in each connecting slot. The two pins of the conductive coil slide inside the conductive sleeve. The outer wall of the base is provided with a number of fixed grooves that are the same as and corresponding in position to the communicating grooves. A conductive rod is fixedly connected in the fixed groove, and one end of the conductive rod is in contact with the outer wall of the conductive sleeve. Both the first clamping plate and the second clamping plate are slidably connected to the outer wall of the magnetic core. The outer wall of the first clamping plate is fixedly connected with a first fixing rod arranged symmetrically. The first fixing rod is fixedly connected to the second connecting rod. Each of the first fixing rods has a communication port. The outer wall of the second clamping plate is fixedly connected with symmetrically arranged second fixing rods. The second fixing rods pass through the communication port and are fixedly connected to the first connecting rod. Both the first fixing rod and the second fixing rod are slidably connected in the connecting groove.

2. The flat wire inductor according to claim 1, characterized in that: The elastic element is a helical spring or a silicone elastic pad, whose elastic coefficient matches the magnetic repulsion force to ensure the magnetic core is suspended and balanced.

3. The flat wire inductor according to claim 2, characterized in that: The base is made of insulating material, and the first clamping plate and the second clamping plate are both made of thermally conductive material to conduct the heat of the coil to the base.

4. The flat wire inductor according to claim 3, characterized in that: The clamping surfaces of the first clamping plate and the second clamping plate are provided with a flexible thermally conductive layer to buffer vibration and enhance thermal conductivity.

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