Inductance device

Abstract

The utility model provides an inductance device which comprises a magnet, a winding and two metal terminals arranged in a spaced mode, the magnet wraps a main body of the winding, the two metal terminals are oppositely arranged and at least arranged on the side face of the magnet, clamping grooves are formed in the faces, away from the magnet, of the metal terminals, and the leading-out ends of the winding penetrate through the metal terminals to be clamped in the clamping grooves. And the metal terminal is electrically connected with the leading-out end. The metal terminal is arranged on the side surface of the magnet, so that the risk of electromagnetic leakage of the inductance device is reduced.

Description

Technical Field

[0001] The present application relates to the field of inductance technology, and in particular to an inductance device. Background Art

[0002] Inductors are important components in electronic circuits. They store and release magnetic field energy and adjust the voltage and current in the circuit as needed to achieve the conversion and transmission of electrical energy.

[0003] Inductive devices are also commonly used in automotive electronic systems, but the inductive devices used in automobiles usually have high requirements for their electromagnetic radiation. The electromagnetic radiation of existing inductive devices has a serious risk of leakage, resulting in the inability to meet the requirements of automotive electronic systems. Utility Model Content

[0004] In view of this, the present application provides an inductor device to reduce the risk of electromagnetic leakage in the inductor device.

[0005] The present application provides an inductor device, comprising a magnet, a winding, and two spaced-apart metal terminals, wherein the magnet wraps the main body of the winding, the two metal terminals are arranged opposite to each other and at least on the side of the magnet, a slot is provided on a side of the metal terminal facing away from the magnet, and the lead-out end of the winding passes through the metal terminal and is engaged in the slot, so that the metal terminal is electrically connected to the lead-out end.

[0006] In some embodiments, the magnet has a top surface, a bottom surface, and a side surface connecting the top surface and the bottom surface, each of the metal terminals includes a first metal part and a first bent portion connected to the first metal part, the first metal part is located on the side surface, and the first bent portion is located on the bottom surface, the slot includes a first accommodating slot and a second accommodating slot connected to the first accommodating slot, the first accommodating slot is located on the first metal part, and the second slot is located on the first bent portion.

[0007] In some embodiments, the surface of the lead end in the second accommodating groove facing away from the magnet is flush with the surface of the first bent portion facing away from the magnet, or the surface of the lead end in the second accommodating groove facing away from the magnet is lower than the surface of the first bent portion facing away from the magnet.

[0008] In some embodiments, a notch is provided at one end of the first metal portion away from the first bending portion, and the lead-out end passes through the notch to be engaged in the slot.

[0009] In some embodiments, the metal terminal further includes a second bending portion, the second bending portion is connected to a side of the first metal portion facing away from the first bending portion, and the second bending portion is disposed on the top surface.

[0010] In some embodiments, the side surface includes a first side surface, a second side surface, a third side surface, and a fourth side surface connected in sequence, and a side of the first side surface away from the second side surface is connected to a side of the fourth side surface away from the third side surface;

[0011] The metal terminal also includes a second metal part, which is connected to one side of the first metal part, wherein the first metal part of one of the metal terminals is located on the first side, the second metal part connected to the first metal part in one of the metal terminals is located on the second side, the first metal part of another of the metal terminals is located on the third side, and the second metal part connected to the first metal part in one of the metal terminals is located on the fourth side.

[0012] In some embodiments, the metal terminal further includes a third bending portion connected to the second metal portion, the third bending portion is disposed on the top surface and the bottom surface, and the third bending portion is spaced apart from the first bending portion.

[0013] In some embodiments, a protrusion is disposed on a side of the third bending portion on the top surface away from the second metal portion and close to the slot.

[0014] In some embodiments, the surface of the lead-out end in the first accommodating groove facing away from the magnet is flush with the surface of the first metal part facing away from the magnet, or the surface of the lead-out end in the first accommodating groove facing away from the magnet is lower than the surface of the first metal part facing away from the magnet.

[0015] In some embodiments, the inductor device further includes a cover plate, and the cover plate is disposed on the top surface.

[0016] The present application provides an inductor device, including a magnet, a winding, and two spaced metal terminals, wherein the magnet wraps the main body of the winding, the two metal terminals are arranged opposite to each other and at least arranged on the side of the magnet, a slot is arranged on the side of the metal terminal facing away from the magnet, and the lead-out end of the winding passes through the metal terminal and is engaged in the slot, so that the metal terminal is electrically connected to the lead-out end. In the present application, by arranging the metal terminal as an electrode on the side of the magnet, a reverse magnetic field can be generated by the induced current generated by the metal terminal to offset the original magnetic field, thereby reducing the magnetic field strength passing through the metal terminal, and further reducing the risk of electromagnetic leakage in the inductor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the first three-dimensional structure of the inductor device provided by the present application;

[0019] Figure 2 is a schematic diagram of a second three-dimensional structure of an inductor device provided by the present application;

[0020] Figure 3 This is a schematic diagram of a first three-dimensional structure of a metal terminal in an inductor device provided in the present application;

[0021] Figure 4 This is a schematic diagram of a second three-dimensional structure of a metal terminal in an inductor device provided by the present application;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the metal terminals and windings in the inductor device provided by the present application;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the winding in the inductor device provided in the present application.

[0024] Reference numerals:

[0025] 10. Inductor device; 100. Magnet; 110. Top surface; 120. Bottom surface; 130. First side surface; 140. Second side surface; 150. Third side surface; 160. Fourth side surface; 200. Winding; 210. Main body; 220. Lead end; 300. Metal terminal; 301. Card slot; 302. First receiving slot; 303. Second receiving slot; 310. First metal part; 311. Notch; 320. First bending part; 330. Second bending part; 331. Bump part; 340. Second metal part; 350. Third bending part; 351. Raised part; 400. Cover plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and their technical features can be combined with each other.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by a person skilled in the art to which this application belongs. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "connection", "electrical connection", and "electrical connection" used herein include any direct and indirect electrical or structural connection means. Therefore, if the text describes a first device coupled / connected / electrically connected to a second device, it means that the first device can be directly electrically / structurally connected to the second device, or indirectly electrically / structurally connected to the second device through other devices or connection means.

[0029] The present application provides an inductor device, comprising a magnet, a winding and two spaced-apart metal terminals, wherein the magnet wraps around the main body of the winding, the two metal terminals are arranged opposite to each other and at least on the side of the magnet, a slot is arranged on a side of the metal terminal facing away from the magnet, and the lead-out end of the winding passes through the metal terminal and is engaged in the slot, so that the metal terminal is electrically connected to the lead-out end.

[0030] In the present application, by setting the metal terminal serving as an electrode on the side of the magnet, a reverse magnetic field can be generated by the induced current generated by the metal terminal to offset the original magnetic field, thereby reducing the magnetic field strength passing through the metal terminal and further reducing the risk of electromagnetic leakage in the inductor.

[0031] See also Figure 1-Figure 6 , Figure 1 It is a schematic diagram of the first three-dimensional structure of the inductor device provided by the present application; Figure 2 is a schematic diagram of a second three-dimensional structure of an inductor device provided by the present application; Figure 3 This is a schematic diagram of a first three-dimensional structure of a metal terminal in an inductor device provided in the present application; Figure 4 This is a schematic diagram of a second three-dimensional structure of a metal terminal in an inductor device provided by the present application; Figure 5 It is a schematic diagram of the three-dimensional structure of the metal terminals and windings in the inductor device provided by the present application; Figure 6Schematic diagram of the three-dimensional structure of the winding in the inductor device provided by the present application. The present application provides an inductor device 10, comprising a magnet 100, a winding 200 and two metal terminals 300 arranged at intervals.

[0032] The magnet 100 wraps the main body 210 of the winding 200. Specifically, the magnet 100 is formed by pressing a magnetic material, and the magnet 100 has a top surface 110, a bottom surface 120, and a side surface connecting the top surface 110 and the bottom surface 120, and the side surface includes a first side surface 130, a second side surface 140, a third side surface 150, and a fourth side surface 160 connected in sequence, and the side of the first side surface 130 away from the second side surface 140 is connected to the side of the fourth side surface 160 away from the third side surface 150; the winding 200 includes a main body 210 and a lead-out terminal 220 connected to the end of the main body 210, the main body 210 is wrapped inside the magnet 100 by the magnet 100, and the lead-out terminal 220 is exposed outside the magnet 100 and exposed from the side of the magnet 100, the winding 200 is formed by winding a flat wire, and the flat wire is formed by a conductor with an insulating layer coated on the surface, and the magnet 100 is formed by once pressing the magnetic material after the main body 210 is wrapped by the magnetic material. Optionally, the magnet 100 may be a ferrite magnet, so that the inductor device 10 has good impact resistance and durability without damage.

[0033] The two metal terminals 300 are arranged opposite to each other and at least on the side of the magnet 100. A slot 301 is provided on the side of the metal terminal 300 facing away from the magnet 100. The lead end 220 of the winding 200 passes through the metal terminal 300 and is engaged in the slot 301 to electrically connect the metal terminal 300 with the lead end 220. Specifically, the metal terminal 300 is formed by integral pressing, and the metal terminal 300 is made of a conductive material, and the conductive material includes at least one of copper, silver and nickel, but is not limited thereto; each metal terminal 300 includes a first metal part 310 and a first bending part 320 connected to the first metal part 310, the first metal part 310 is located on the side, and the first bending part 320 is located on the bottom surface 120, wherein the first metal part 310 is a side electrode, and the first bending part 320 is a bottom electrode; the card slot 301 includes a first receiving slot 302 and a second receiving slot 303 connected to the first receiving slot 302, the first receiving slot 302 is located on the first metal part 310, and the second card slot 301 is located on the first bending part 320; the lead-out end 220 arranged in the second receiving slot 303 faces away from the magnet The surface of the lead end 220 disposed in the first accommodating groove 302 away from the magnet 100 is flush with the surface of the first bent portion 320 facing away from the magnet 100, or the surface of the lead end 220 disposed in the second accommodating groove 303 away from the magnet 100 is lower than the surface of the first bent portion 320 facing away from the magnet 100; further, the surface of the lead end 220 disposed in the first accommodating groove 302 away from the magnet 100 is flush with the surface of the first metal portion 310 facing away from the magnet 100, or the surface of the lead end 220 disposed in the first accommodating groove 302 away from the magnet 100 is lower than the surface of the first metal portion 310 facing away from the magnet 100, that is, the surface of the lead end 220 facing away from the magnet 100 is not higher than the side of the metal terminal 300 facing away from the magnet 100, that is, the thickness of the lead end 220 is equal to or lower than the slot height of the slot 301. After the lead end 220 passes through the magnet 100, the lead end 220 is bent from the top surface 110 toward the bottom surface 120, and this bent portion of the lead end 220 is set in the first accommodating groove 302. Then, the lead end 220 extending out of the first accommodating groove 302 continues to be bent, and this portion of the lead end 220 is bent from the outside of the magnet 100 toward the inside of the magnet 100 to engage in the second accommodating groove 303.

[0034] In the present application, by setting the metal terminal 300 serving as an electrode at least on the side of the magnet 100, a reverse magnetic field can be generated by the induced current generated by the metal terminal 300 to offset the original magnetic field, thereby reducing the magnetic field strength passing through the metal terminal 300, and further reducing the risk of electromagnetic leakage in the inductor 10. At the same time, because the metal terminal 300 is set on the side of the magnet 100, the metal terminal 300 is exposed to the outside of the magnet 100, so that the welding position of the metal terminal 300 and the lead-out terminal 220 can be located on the side of the magnet 100 instead of at the bottom of the magnet 100, so that when performing automatic optical inspection (AOI) testing, there is no blind spot in the test, which is convenient for achieving the requirements of AOI full testing, thereby ensuring the safety and reliability of the inductor 10.

[0035] In the present application, by using the metal terminal 300 provided in the present application as an electrode instead of using the lead end 220 as an electrode, the area of ​​the electrode is increased, and at the same time, the side electrode can be tinned, so that when the inductor device 10 is mounted on the circuit board, the connection strength between the two is increased, avoiding the risk of the inductor device 10 falling off, thereby improving the service life of the product.

[0036] In the present application, the surface of the lead-out end 220 facing away from the magnet 100 arranged in the second accommodating groove 303 is set to be no higher than the surface of the first bent portion 320 facing away from the magnet 100, so as to ensure that the surface of the metal terminal 300 and the surface of the lead-out end 220 are in the same plane, that is, the coplanarity of the electrodes is reduced, thereby avoiding warping during subsequent soldering to the PCB board, thereby improving the performance of the inductor device 10.

[0037] In the present application, a first bending portion 320 located on the top surface 110 is provided on one side of the first metal portion 310, and a second accommodating groove 303 is provided on the first bending portion 320, so that the lead-out end 220 can be better connected to the metal terminal 300 and the risk of an open circuit is reduced.

[0038] In existing inductance devices, the lead-out ends of the windings are usually bent to form electrodes. However, because the electrodes are formed on the magnets, excessive force cannot be used to process the lead-out ends to avoid the risk of damage to the magnets. Moreover, after the lead-out ends are bent multiple times, it is difficult to ensure that the springback is completely consistent, which in turn makes it difficult to ensure the coplanarity of the electrodes, thereby reducing the yield of the inductance device. In the present application, by using the metal terminal 300 as the electrode, the metal terminal 300 can be pressed and formed in advance, and the pressed metal terminal 300 can be connected to the lead-out end 220 without being formed by bending, so that the coplanarity of the electrodes can be better controlled within the specification range, thereby reducing the yield of the inductance device 10. In addition, since a card slot 301 is provided on the outer surface of the metal terminal 300, and the thickness of the lead-out terminal 220 is set to be smaller than the slot height of the card slot 301 or equal to the slot height of the card slot 301, the electrode coplanarity of the inductor device is further controlled within the specification range, thereby further ensuring the yield of the inductor device 10, thereby further ensuring the performance of the inductor device 10.

[0039] In one embodiment, a notch 311 is provided at one end of the first metal portion 310 away from the first bending portion 320, and the lead end 220 passes through the notch 311 to engage in the slot 301. The notch 311 exposes a portion of the magnet 100. The setting of the notch 311 allows the lead end 220 to pass through the side of the magnet 100 without passing through the bottom surface 120 of the magnet 100, so as to facilitate the processing of the inductor device 10.

[0040] In one embodiment, the metal terminal 300 further includes a second bending portion 330, which is connected to a side of the first metal portion 310 away from the first bending portion 320, and is disposed on the top surface 110. Furthermore, two second bending portions 330 are spaced apart and are connected to the first metal portion 310 on both sides of the notch 311.

[0041] In one embodiment, the metal terminal 300 further includes a second metal portion 340, which is connected to one side of the first metal portion 310, wherein the first metal portion 310 of one metal terminal 300 is located at the first side 130, the second metal portion 340 connected to the first metal portion 310 in one metal terminal 300 is located at the second side 140, the first metal portion 310 of another metal terminal 300 is located at the third side 150, and the second metal portion 340 connected to the first metal portion 310 in one metal terminal 300 is located at the fourth side 160, that is, the first metal portion 310 of one metal terminal 300 is arranged opposite to the first metal portion 310 of another metal terminal 300, and the second metal portion 340 of one metal terminal 300 is arranged opposite to the second metal portion 340 of another metal terminal 300. Optionally, the positions of the first side 130, the second side 140, the third side 150 and the fourth side 160 can be interchanged.

[0042] In one embodiment, the metal terminal 300 further includes a third bending portion 350 connected to the second metal portion 340, the third bending portion 350 is arranged on the top surface 110 and the bottom surface 120, the third bending portion 350 located on the bottom surface 120 is spaced apart from the first bending portion 320, and the third bending portion 350 located on the top surface 110 is spaced apart from the second bending portion 330, wherein at least one third bending portion 350 can be used as an external electrode, and the external electrode is used to be mounted on a circuit board. Furthermore, there is a recessed portion between the second metal portion 340 connected to the third bending portion 350 located on the bottom surface 120 and the first metal portion 310 connected to the first bending portion 320, and there is also a recessed portion between the second metal portion 340 connected to the third bending portion 350 located on the top surface 110 and the first metal portion 310 connected to the second bending portion 330.

[0043] In one embodiment, a protrusion 351 is provided on the side of the third bending portion 350 located on the top surface 110 away from the second metal portion 340 and close to the card slot 301, and no protrusion 351 is provided on the side of the third bending portion 350 located on the bottom surface 120 away from the second metal portion 340.

[0044] In one embodiment, protrusions 331 are disposed on both sides of the end of the second bending portion 330 away from the first metal portion 310 , so that the metal terminal 300 can be well engaged with the magnet 100 .

[0045] In one embodiment, the inductor device 10 further includes a cover plate 400, which is disposed on the top surface 110. Specifically, the cover plate 400 is made of plastic, and the cover plate 400 is bonded to the top surface 110, the second bending portion 330, and the third bending portion 350 of the magnet 100 by an adhesive to protect the metal terminal 300 and the lead-out terminal 220 on the top surface 110.

[0046] In one embodiment, the metal terminal 300 also includes a connecting metal part, which is in the shape of an arc. The opposite sides of the connecting metal part are respectively connected to the first metal part 310 and the second metal part 340, and the connecting metal part is located at the junction of adjacent side surfaces of the magnet 110. The first metal part 310 and the second metal part 340 are connected by the connecting metal part, and are arranged at the junction of adjacent side surfaces of the magnet 110, so that the metal terminal 300 can better fit with the magnet 100, thereby further improving the performance of the inductor device 10.

[0047] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structural or equivalent process transformations made using the contents of the specification and drawings of the present application, such as the mutual combination of technical features between the embodiments, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An inductor device, characterized in that: It includes a magnet, a winding and two spaced-apart metal terminals, wherein the magnet wraps the main body of the winding, the two metal terminals are arranged opposite to each other and at least on the side of the magnet, a slot is provided on the side of the metal terminal facing away from the magnet, and the lead-out end of the winding passes through the metal terminal and is engaged in the slot, so that the metal terminal is electrically connected to the lead-out end.

2. The inductor device according to claim 1, characterized in that: The magnet has a top surface, a bottom surface and a side surface connecting the top surface and the bottom surface, each of the metal terminals includes a first metal part and a first bending part connected to the first metal part, the first metal part is located on the side surface, and the first bending part is located on the bottom surface, the card slot includes a first accommodating slot and a second accommodating slot connected to the first accommodating slot, the first accommodating slot is located on the first metal part, and the second accommodating slot is located on the first bending part.

3. The inductor device according to claim 2, characterized in that: The surface of the lead-out end in the second accommodating groove facing away from the magnet is flush with the surface of the first bent portion facing away from the magnet, or the surface of the lead-out end in the second accommodating groove facing away from the magnet is lower than the surface of the first bent portion facing away from the magnet.

4. The inductor device according to claim 2, characterized in that: A notch is provided at one end of the first metal portion away from the first bending portion, and the lead-out end passes through the notch to be engaged in the slot.

5. The inductor device according to claim 4, characterized in that: The metal terminal further includes a second bending portion, the second bending portion is connected to a side of the first metal portion away from the first bending portion, and the second bending portion is disposed on the top surface.

6. The inductor device according to claim 2, characterized in that: The side surface comprises a first side surface, a second side surface, a third side surface and a fourth side surface which are connected in sequence, and a side of the first side surface away from the second side surface is connected to a side of the fourth side surface away from the third side surface; The metal terminal also includes a second metal part, which is connected to one side of the first metal part, wherein the first metal part of one of the metal terminals is located on the first side, the second metal part connected to the first metal part in one of the metal terminals is located on the second side, the first metal part of another of the metal terminals is located on the third side, and the second metal part connected to the first metal part in one of the metal terminals is located on the fourth side.

7. The inductor device according to claim 6, characterized in that: The metal terminal further includes a third bending portion connected to the second metal portion, the third bending portion is disposed on the top surface and the bottom surface, and the third bending portion is spaced apart from the first bending portion.

8. The inductor device according to claim 7, characterized in that: A protrusion is provided on a side of the third bending portion on the top surface away from the second metal portion and close to the clamping slot.

9. The inductor device according to claim 2, characterized in that: The surface of the lead-out end in the first receiving groove facing away from the magnet is flush with the surface of the first metal part facing away from the magnet, or the surface of the lead-out end in the first receiving groove facing away from the magnet is lower than the surface of the first metal part facing away from the magnet.

10. The inductor device according to claim 2, characterized in that: The inductor device further includes a cover plate, and the cover plate is arranged on the top surface.

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