CN218351254U - Inductor - Google Patents

Abstract

The application discloses inductor relates to electronic component technical field, and the inductor of this application, including the magnet seat, the magnet seat includes two parallel arrangement's magnetism post, winds on the magnetism post and is equipped with the winding, and the both ends of magnetism post are provided with the lead terminal respectively, and the lead terminal includes connecting plate and the pressing plate who is connected respectively with the connecting plate both ends, and the both ends of winding are connected with the connecting plate of lead terminal respectively, and the pressing plate covers the tip of winding respectively by both sides. The application provides an inductor sets up the better lead terminal of ductility, can improve the reliability of winding end connection.

Description

Inductor

Technical Field

The application relates to the technical field of electronic elements, in particular to an inductor.

Background

A common mode inductor, also called a common mode choke coil, is commonly used in a switching power supply of a computer to filter common mode electromagnetic interference signals; in recent years, a common mode inductor has been widely applied in the technical field of power electronics, a conventional common mode inductor is composed of a magnetic core and two windings, the number of turns and the phase of the two windings are the same, the two windings are wound on the magnetic core, when normal current in a circuit flows through the common mode inductor, the current generates reverse magnetic fields in the windings wound in the same phase and counteracts each other, and at the moment, the normal signal current is mainly influenced by the resistance of the windings; when common mode current flows through the winding, due to the isotropy of the common mode current, an equidirectional magnetic field is generated in the winding to increase the inductance of the winding, so that the winding presents high impedance and generates a strong damping effect, thereby attenuating the common mode current and achieving the purpose of filtering.

Along with the development of miniaturization and flattening of electronic products, a chip inductor also gradually replaces a traditional magnetic ring inductor, the conventional chip common mode inductor comprises two magnetic cores which are parallel to each other and windings which are wound on the magnetic cores respectively, metal is plated at two ends of each magnetic core generally in order to realize connection of the windings and a circuit, and winding pins are welded with the plated metal to realize connection of the windings.

SUMMERY OF THE UTILITY MODEL

The purpose of the present application is to provide an inductor in which a lead terminal having high ductility is provided, and the reliability of connection of winding end portions can be improved.

An embodiment of this application provides an inductor on the one hand, including the magnet seat, the magnet seat includes two parallel arrangement's magnetism post, winds on the magnetism post and is equipped with the winding, and the both ends of magnetism post are provided with the lead terminal respectively, and the lead terminal includes the connecting plate and presses the clamp plate of being connected respectively with the connecting plate both ends, and the both ends of winding are connected with the connecting plate of lead terminal respectively, presses the clamp plate to cover the tip of winding respectively by both sides.

As a practical mode, the lead terminal further comprises an L-shaped clamping plate connected with the other end of the connecting plate, the L-shaped clamping plate and the connecting plate form a U-shaped structure, clamping grooves are formed in the concave parts of the two opposite sides of the magnetic column, and the clamping plate is clamped into the clamping grooves to limit the position of the lead terminal.

As a practical way, the inductor further comprises an upper cover which is connected with the magnet seat in a clamping way.

As a practical mode, the upper cover is protruded with at least two elastic buckles towards the magnet seat, the magnet seat is provided with a through hole corresponding to the elastic buckle, and the elastic buckle stretches into the through hole and is clamped to fix the upper cover and the magnet seat.

As a practical manner, the upper cover is protruded toward the magnet holder to form a partition plate, and the partition plate is extended between the two windings to separate the two adjacent windings.

As an implementable mode, the same sides of the two magnetic columns are connected through the connecting parts respectively, the two elastic buckles comprise two elastic buckles, the two elastic buckles are arranged at the two ends of the partition plate respectively, and the through holes corresponding to the two elastic buckles are communicated with the through grooves between the two magnetic columns.

As a practical mode, the elastic buckle comprises a connecting column connected with the upper cover and a clamping part connected with the end part of the connecting column, and the clamping part protrudes out of the connecting column so that the clamping part is supported and held by the outer surface of the through groove and the outer surface of the connecting part.

As a practical mode, the surface of the clamping part, which is far away from the connecting column, is an inclined plane, and the side wall of the through groove extrudes the inclined plane to enable the clamping part to penetrate through the through groove.

As an implementable mode, the side edge of the upper cover along the extending direction of the magnetic column is concave inwards to form a notch, the notch corresponds to the connecting column and extends to the connecting column, so that the connecting part is exposed through the notch.

As a practical mode, one side of the connecting plate, which is provided with the pressing plate, is also provided with a positioning sheet which protrudes outwards, and the positioning sheet and the connecting plate are positioned on the same plane so as to increase the contact area of the lead terminal and the magnet seat.

The beneficial effects of the embodiment of the application include:

the utility model provides an inductor, including the magnet seat, the magnet seat includes two parallel arrangement's magnetic column, the winding is equipped with around on the magnetic column, the both ends of magnetic column are provided with the lead terminal respectively, the lead terminal includes connecting plate and the pressing plate of being connected respectively with the connecting plate both ends, the both ends of winding are connected with the connecting plate of lead terminal respectively, connect the winding in the circuit through the lead terminal, wherein, the lead terminal adopts conductive metal to make, and conductive metal has good ductility usually, thereby when making the tip of winding and connecting plate vibrate, the tip and the connecting plate of winding are difficult for droing, thereby improve the reliability that winding and lead terminal are connected, in addition, the pressing plate covers the tip of winding respectively by both sides, pressing plate and connecting plate are connected, make the tip of winding be located between pressing plate and the connecting plate, further improve the tip of winding and the reliability that the lead terminal is connected. This application embodiment sets up the better lead terminal of ductility through the both ends at the magnetic column, can improve winding end connection's reliability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an inductor according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural diagram of an inductor according to an embodiment of the present disclosure;

fig. 3 is an exploded schematic view of an inductor according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a lead terminal according to an embodiment of the present disclosure;

fig. 5 is a second schematic structural diagram of a lead terminal according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an upper cover according to an embodiment of the present application.

Icon: 10-an inductor; 11-a magnet holder; 111-magnetic column; 112-a clamping groove; 113-a connecting portion; 12-a winding; 13-lead terminal; 131-a connecting plate; 132-a pressing plate; 133-L type joint plate; 134-a locating plate; 14-upper cover; 141-elastic buckle; 142-a divider plate; 143-connecting column; 144-a snap-in part; 145-notch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The inductor is one of commonly used electronic components, is widely applied to various electronic circuits, and is an indispensable component for realizing functions such as energy storage, filtering, tuning and the like.

The present application provides an inductor 10, as shown in fig. 1, fig. 2 and fig. 3, including magnet holder 11, magnet holder 11 includes two parallel arrangement's magnetic column 111, around being equipped with winding 12 on the magnetic column 111, the both ends of magnetic column 111 are provided with lead terminal 13 respectively, lead terminal 13 includes connecting plate 131 and the pressing plate 132 of being connected respectively with connecting plate 131 both ends, the both ends of winding 12 are connected with connecting plate 131 of lead terminal 13 respectively, pressing plate 132 covers the tip of winding 12 by both sides respectively.

When the inductor 10 is applied, two ends of the winding 12 wound on the magnetic pole 111 are respectively connected with the lead terminals 13 and are connected with a circuit through the lead terminals 13, when a normal current in the circuit flows through the inductor 10, the current generates a reverse magnetic field in the winding 12 wound in the same phase and cancels out each other, and at the moment, the normal signal current is mainly influenced by the resistance of the winding 12; when a common mode current flows through the winding 12, due to the common mode current's isotropy, an isotropic magnetic field is generated in the winding 12 to increase the inductance of the winding 12, so that the winding 12 exhibits a high impedance and generates a strong damping effect, thereby attenuating the common mode current and achieving the filtering purpose of the inductor 10. It should be noted here that, in order to realize the filtering function of the inductor 10, the windings 12 wound on the two magnetic poles 111 have the same number of turns and diameter.

By connecting the two ends of the winding 12 with the lead terminals 13, the lead terminals 13 have good ductility, and when the inductor 10 causes relative displacement between the lead terminals 13 and the winding 12 due to oscillation, the lead terminals 13 and the ends of the winding 12 are not easy to separate and fall off, so that the reliability of connection of the winding 12 is improved. In addition, in the embodiment of the present invention, in order to further improve the connection reliability of the winding 12, the lead terminals 13 are disposed as the connection plate 131 and the pressing plates 132 respectively connected to both sides of the connection plate 131, and the ends of the winding 12 are covered by the pressing plates 132 and the connection plate 131 by the pressing plates 132 respectively connected to both sides of the connection plate 131, so that the ends of the winding 12 are surrounded by the pressing plates 132 and the connection plate 131, thereby further improving the connection reliability of the winding 12.

In order to position the end of the winding 12, as shown in fig. 4, tapered grooves may be formed in the connecting plate 131 so as to be gradually deeper in the extending direction of the end of the winding 12, and when the end of the winding 12 is welded to the connecting plate 131, the end of the winding 12 is first placed in the tapered grooves, the end of the winding 12 is fixed to the connecting plate 131 by soldering, and then the pressing plates 132 connected to both sides of the connecting plate 131 are pressed so that the pressing plates 132 cover the end of the winding 12. It should be noted that, in order to show the end of the winding 12 more clearly, fig. 1, 3 and 4 are all the states in which the pressing plate 132 is not pressed, and in practical applications, after the end of the winding 12 is fixed to the connecting plate 131, the pressing plate 132 is pressed until the pressing plate 132 contacts with the end of the winding 12.

It should be noted that, in the embodiment of the present application, the lead terminals 13 are respectively connected to two ends of the winding 12, and the lead terminals 13 are used as a carrier for connecting the winding 12 to a circuit, and should have good conductivity and be made of conductive metal, and the common conductive metals copper, aluminum, and silver all have good ductility. Specific materials of the lead terminal 13 are not limited in this embodiment, and those skilled in the art may set the lead terminal according to practical situations.

The utility model provides an inductor 10, including magnet holder 11, magnet holder 11 includes two parallel arrangement's magnetic column 111, winding 12 on the magnetic column 111, the both ends of magnetic column 111 are provided with lead terminal 13 respectively, lead terminal 13 includes connecting plate 131 and the pressing plate 132 of being connected respectively with connecting plate 131 both ends, the both ends of winding 12 are connected with the connecting plate 131 of lead terminal 13 respectively, connect winding 12 in the circuit through lead terminal 13, wherein, lead terminal 13 adopts conductive metal to make, and conductive metal generally has good ductility, thereby when making the tip of winding 12 vibrate with connecting plate 131, the tip of winding 12 is difficult for droing with connecting plate 131, thereby improve the reliability that winding 12 and lead terminal 13 are connected, in addition, pressing plate 132 covers the tip of winding 12 respectively by both sides, pressing plate 132 is connected with connecting plate 131, make the tip of winding 12 be located between plate 132 and connecting plate 131, further improve the reliability that the tip of winding 12 is connected with lead terminal 13. In the embodiment of the present application, the lead terminals 13 having good ductility are provided at both ends of the magnetic pole 111, so that the reliability of the end connection of the winding 12 can be improved.

Optionally, as shown in fig. 1, fig. 3, fig. 4 and fig. 5, the lead terminal 13 further includes an L-shaped clamping plate 133 connected to the other end of the connecting plate 131, the L-shaped clamping plate 133 and the connecting plate 131 form a U-shaped structure, clamping grooves 112 are formed in opposite sides of the magnetic pillar 111 in a concave manner, and the clamping plate is clamped in the clamping grooves 112 to define the position of the lead terminal 13.

In order to improve the stability of connection between the lead terminal 13 and the magnetic pillar 111, the lead terminal 13 is configured in a U-shaped structure, and the U-shaped structure is engaged with the end portion of the magnetic pillar 111, so that the contact area between the U-shaped structure and the magnetic pillar 111 is large, the number of surfaces in contact with each other is large, and the stability of connection between the lead terminal 13 and the magnetic pillar 111 is improved. In addition, in order to facilitate the mounting of the lead terminals 13 and to achieve uniformity of mounting positions of the lead terminals 13, clamping grooves 112 are concavely formed at opposite sides of the magnetic pole 111, and clamping plates are clamped into the clamping grooves 112 to define positions of the lead terminals 13.

In practical application, glue is usually applied to the inner wall of the U-shaped structure, and then the U-shaped structure is attached to the end of the magnetic pillar 111 until the U-shaped structure is fixed to the magnetic pillar 111.

In one manner of realisation of the embodiments of the present application, as shown in fig. 1 and 3, the inductor 10 further comprises an upper cover 14 snap-coupled to the magnet holder 11.

The winding 12 is usually formed by winding fingers with an enameled wire, and is relatively easy to be damaged or deformed by an external force, and in order to protect the winding 12 in the inductor 10, an upper cover 14 is usually disposed on the magnet base 11, and the winding 12 is covered to block external objects from approaching the winding 12. In the prior art, the upper cover 14 is usually glued to the magnet holder 11, and those skilled in the art should understand that firstly, the alignment and positioning of the upper cover 14 and the magnet holder 11 are difficult and less precise during the gluing process, resulting in lower efficiency, and secondly, the connection strength of the glued connection is not very high. This application embodiment adopts magnet seat 11 and upper cover 14 block connection, and the block connection has convenient operation, connects the higher advantage of fastness.

Alternatively, as shown in fig. 3 and 6, at least two elastic buckles 141 protrude from the upper cover 14 toward the magnet holder 11, through holes are provided in the magnet holder 11 corresponding to the elastic buckles 141, and the elastic buckles 141 extend into the through holes and are engaged with each other to fix the upper cover 14 and the magnet holder 11.

Specifically, in the embodiment of the present application, the upper cover 14 is fastened with the magnet holder 11 by using the elastic fastener 141 and the through hole, when the upper cover 14 is fastened with the magnet holder 11, the elastic fastener 141 extends into the through hole, and due to the abutting of the side wall of the through hole, the elastic potential energy accumulated by the elastic fastener 141 passes through the through hole, and after the end portion of the elastic fastener 141 extends out of the through hole, due to the loss of the abutting of the side wall of the through hole, the end portion of the elastic fastener 141 releases the elastic potential energy to return to the original shape, so as to abut against the side surface of the magnet holder 11 far away from the upper cover 14, and thus the upper cover 14 is connected with the magnet holder 11.

Wherein, the number and the concrete position of setting of elasticity buckle 141 do not do the restriction in this application embodiment, can set up elasticity buckle 141 respectively in each angle department of upper cover 14, correspond on the magnet seat 11 set up the through-hole can, also can set up a plurality of elasticity buckles 141 with arranging, and so on the mode, as long as can realize upper cover 14 and magnet seat 11 stable connection can.

In an implementable manner of the embodiment of the present application, as shown in fig. 2, 3 and 6, the upper cover 14 is formed with a partition plate 142 protruding toward the magnet holder 11, the partition plate 142 protruding between the two windings 12 to separate the adjacent two windings 12.

Because winding 12 is located on magnetic column 111, have certain clearance between winding 12 and the magnetic column 111 for winding 12 can rock in the space around magnetic column 111, when the winding 12 on two magnetic columns 111 rocks, there is the possibility of mutual contact, because two windings 12 all connect in the circuit, in order to avoid two windings 12 to contact and cause harm, this application embodiment has division board 142 in upper cover 14 towards magnet seat 11 protrusion, division board 142 stretches into between two windings 12 with two adjacent windings 12 of isolation, thereby plays the withstand voltage's of keeping apart effect. The partition plate is integrally formed with the upper cover 14 and is made of an insulating material such as plastic.

Optionally, as shown in fig. 1, fig. 3, and fig. 6, the same sides of the two magnetic pillars 111 are connected by the connecting portion 113, the number of the elastic buckles 141 is two, the two elastic buckles 141 are respectively disposed at two ends of the partition plate 142, and the through holes corresponding to the two elastic buckles 141 are communicated with the through groove between the two magnetic pillars 111.

The two elastic buckles 141 are respectively disposed at two ends of the partition plate 142, so that the number of the elastic buckles 141 can be reduced on the basis of connecting the upper cover 14 and the magnet holder 11, and the upper cover 14 and the magnet holder 11 can be conveniently clamped. Two other elastic buckle 141 set up respectively in the both ends of division board 142, the through-groove intercommunication between the through-hole that two elastic buckle 141 correspond and two magnetic columns 111, can make full use of the through-groove between two magnetic columns 111 as the through-hole, set up the through-hole on magnet seat 11 has been avoided, magnet seat 11 adopts magnetic material to make, great rigidity has, comparatively easily cracked when seting up less hole, the through-hole that this application passes through elastic buckle 141 communicates with leading to the groove, and lead to the groove and can form in magnet seat 11 suppression process, form comparatively easily, thereby avoid the emergence of above-mentioned condition.

As shown in fig. 3 and 6, since the elastic clip 141 needs to be deformed to approach the partition plate 142 during the process of fastening the magnet holder 11 and the upper cover 14, a gap needs to be reserved between the partition plate 142 and the partition plate 142 so that the elastic clip 141 approaches the partition plate when deformed.

In an achievable manner of the embodiment of the present application, as shown in fig. 3 and fig. 6, the elastic buckle 141 includes a connection column 143 connected to the upper cover 14 and a clamping portion 144 connected to an end of the connection column 143, and the clamping portion 144 protrudes from the connection column 143, so that the clamping portion 144 abuts against an outer surface of the connection portion 113 through the through groove.

When the magnet base 11 is engaged with the upper cover 14, the engaging portion 144 firstly extends into the through groove, and the supporting portion of the side wall of the through groove drives the connecting column 143 to approach the partition 142, so that the elastic potential energy is accumulated in the elastic column, after the engaging portion 144 extends out of the through groove, because the engaging portion 144 protrudes out of the connecting column 143, the connecting column 143 is close to the side wall of the through groove under the action of the elastic potential energy, and then the engaging portion 144 is driven to be supported on the surface of the magnet base 11 far from the upper cover 14, thereby completing the connection between the upper cover 14 and the magnet base 11.

Alternatively, as shown in fig. 3 and 6, the surface of the clamping portion 144 away from the connecting column 143 is an inclined surface, and the side wall of the through groove presses the inclined surface to enable the clamping portion 144 to pass through the through groove.

When elastic buckle 141 passes through the groove, clamping portion 144 supports with the lateral wall that leads to the groove and holds and to the direction motion that is close to magnet holder 11, for making clamping portion 144 can lead to the groove in smooth entering, the surface that spliced pole 143 was kept away from to clamping portion 144 in the embodiment of this application is the inclined plane, and the lateral wall extrusion inclined plane that leads to the groove so that clamping portion 144 passes through the groove, because the existence on inclined plane, can make clamping portion 144 can lead to the groove in smooth entering and pass through the groove.

In an implementation manner of the embodiment of the present application, as shown in fig. 1, 3 and 6, a side edge of the upper cover 14 along the extending direction of the magnetic pillar 111 is recessed to form a notch 145, and the notch 145 corresponds to the connecting pillar 143 and extends to the connecting pillar 143, so that the connecting portion 113 is exposed through the notch 145.

The connecting portion 113 is exposed through the notch 145, when the upper cover 14 is engaged with the magnet base 11, and the clamping portion 144 abuts against the edge of the connecting portion 113 near the through slot, an operator can clearly see the edge of the connecting portion 113, so that the operation is facilitated, and the efficiency of connecting the upper cover 14 and the magnet base 11 is improved.

Alternatively, as shown in fig. 5, a positioning piece 134 is further formed by outwardly protruding one side of the connecting plate 131 where the pressing plate 132 is disposed, and the positioning piece 134 and the connecting plate 131 are located on the same plane to increase the contact area of the lead terminal 13 and the magnet holder 11.

In order to further improve the stability of the connection between the lead terminal 13 and the magnet holder 11, a positioning piece 134 is further formed by outwardly protruding one side of the connecting plate 131, which is provided with the pressing plate 132, and the positioning piece 134 and the connecting plate 131 are located on the same plane, so that the positioning piece 134 is in contact with the magnet holder 11, thereby increasing the contact area between the lead terminal 13 and the magnet holder 11, and improving the stability of the connection between the lead terminal 13 and the magnet holder 11.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The inductor is characterized by comprising a magnet seat, wherein the magnet seat comprises two magnetic columns which are arranged in parallel, a winding is wound on each magnetic column, lead terminals are arranged at two ends of each magnetic column respectively, each lead terminal comprises a connecting plate and a pressing plate respectively connected with two ends of the connecting plate, two ends of each winding are respectively connected with the connecting plates of the lead terminals, and the end portions of the windings are respectively covered by two sides of the pressing plate.

2. The inductor according to claim 1, wherein the lead terminal further comprises an L-shaped clamping plate connected with the other end of the connecting plate, the L-shaped clamping plate and the connecting plate form a U-shaped structure, clamping grooves are concavely formed on two opposite sides of the magnetic column, and the clamping plate is clamped into the clamping grooves to limit the positions of the lead terminals.

3. The inductor of claim 1, further comprising an upper cover snap-fit to the magnet holder.

4. The inductor as claimed in claim 3, wherein the upper cover projects toward the magnet base and has at least two elastic clips, the magnet base is provided with through holes corresponding to the elastic clips, and the elastic clips extend into the through holes and are engaged with the through holes to fix the upper cover and the magnet base.

5. The inductor according to claim 4, wherein the upper cover is formed with a partition plate protruding toward the magnet holder, the partition plate protruding between two of the windings to separate the two adjacent windings.

6. The inductor according to claim 5, wherein the two magnetic pillars are connected at the same side by a connecting portion, the two elastic clips are respectively disposed at two ends of the partition plate, and the through holes corresponding to the two elastic clips are communicated with the through grooves between the two magnetic pillars.

7. The inductor according to claim 6, wherein the elastic clip includes a connection post connected to the upper cover and a clip portion connected to the other end of the connection post, the clip portion protrudes from the connection post, so that the clip portion abuts against the outer surface of the connection portion through the through groove.

8. The inductor as claimed in claim 7, wherein the surface of the clip portion away from the connecting stud is a slope, and the sidewall of the through slot presses the slope to allow the clip portion to pass through the through slot.

9. The inductor according to claim 7, wherein a side edge of the upper cover along an extending direction of the magnetic pillar is recessed to form a notch corresponding to the connecting pillar and extending to the connecting pillar, so that the connecting portion is exposed through the notch.

10. The inductor according to claim 1, wherein a side of the connecting plate on which the pressing plate is disposed is further formed with a positioning piece protruding outward, and the positioning piece and the connecting plate are located on the same plane to increase a contact area of the lead terminal and the magnet holder.

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