CN210039841U - Common mode inductor - Google Patents

Abstract

The utility model discloses a common mode inductor, its characterized in that: including dustcoat, magnetic core and coil, dustcoat integrated into one piece, the circular cavity of formation is dug inwards in the middle of its bottom, and the dustcoat outside still is equipped with interconnect's first pin and second pin, and the coil forms on the magnetic core for copper wire winding cladding, and the coil includes two windings that separate independently, and on the wiring end was drawn forth and the binding was connected to first pin at the coil both ends, the second pin was used for being connected with outside PCB board. The utility model discloses with the winding of two group coils on the magnetic core, the winding mode is simple, does not influence the interworking, and the mode of assembly is simple swift moreover, and the dustcoat that the LCP material was made in addition makes more heat-resisting in the inductor use, fine protection the inductor after dropping, the life-span that the extension inductor used.

Description

Common mode inductor

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the electronic component field, concretely relates to common mode inductor.

[ background of the invention ]

The inductor is an element capable of converting electric energy into magnetic energy for storage, the structure of the inductor is similar to that of a transformer, but only one winding is provided, and the inductor has certain inductance and only blocks the change of current. When the circuit is in a state of no current passing, the circuit tries to block the current passing, and when the circuit is in a state of current passing, the circuit is switched off and tries to keep the current unchanged; the inductor has the characteristic of preventing alternating current from passing through and allowing direct current to pass through smoothly.

The existing common mode inductor is complex in wire binding design, troublesome in assembly and poor in heat resistance of the inductor, and the inductor is lack of a device for handling falling damage, so that the inductor falls accidentally to cause damage.

[ Utility model ] content

In order to solve the existing problem that exists among the background art, the utility model provides a common mode inductor.

The utility model adopts the following technical proposal:

a common mode inductor, characterized by: including dustcoat, magnetic core and coil, dustcoat integrated into one piece, the circular cavity of formation is inwards drawn in the middle of its bottom, the dustcoat outside still is equipped with interconnect's first pin and second pin, the coil for copper wire winding cladding in form on the magnetic core, the coil includes two windings that separate independently, the wiring end is drawn forth and bind and be connected to at the coil both ends on the first pin, the second pin is used for being connected with outside PCB board.

Furthermore, the first pins are respectively provided with two pins which are obliquely inserted at two opposite sides of the top of the outer cover, and the first pins are metal cylindrical pieces.

Furthermore, the second pins are flat bent metal pieces and are inserted into two sides of the bottom of the outer cover to be correspondingly connected with the first pins.

Furthermore, a groove is formed in the side face of the outer cover, the groove is located between the two second pins at the same side, the groove extends to be communicated with the circular cavity, and a wiring end led out of the coil is wound and bound on the first pins through the groove.

Further, the magnetic core is a cylindrical iron powder core.

Further, the outer cover is made of LCP materials.

The utility model has the advantages as follows:

the utility model discloses with the winding of two group coils on the magnetic core, the winding mode is simple, does not influence the interworking, and the mode of assembly is simple swift moreover, and the dustcoat that the LCP material was made in addition makes more heat-resisting in the inductor use, fine protection the inductor after dropping, the life-span that the extension inductor used.

[ description of the drawings ]

FIG. 1 is a schematic structural view of a middle housing of the present invention;

fig. 2 is a schematic structural diagram of the magnetic core in the present invention.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

This embodiment provides a common mode inductor, refers to fig. 1-fig. 2, including dustcoat 1, magnetic core 2 and coil 3, 1 integrated into one piece of dustcoat, dustcoat 1 adopts the LCP material preparation, and the LCP is a novel macromolecular material, has fine shaping processing property and heat-resisting insulating performance, carries out fine protection to the inductance when accidentally dropping, prevents that the inductance from damaging, and dustcoat 1 top is bellied square structure, and the bottom is integrated into one piece's cuboid structure, and inwards hollows out in the middle of dustcoat 1's the bottom and forms circular cavity, and coil 3 and magnetic core are placed to the cavity.

As shown in fig. 2, a copper wire is wound on a magnetic core to form a coil 3, the scheme is a winding of a common mode coil, each magnetic core is provided with two windings in total, the two windings work independently and separately and are not interfered, the winding method of the copper wire is various, a single-layer winding mode is adopted in the scheme, generally, the winding directions of the two windings are opposite, the number of turns is equal, wiring ends at two ends of the coil 3 are led out, the magnetic core 2 can be selected into magnetic cores in various shapes, such as a cylinder shape, an I shape and the like, for convenience in assembly and simplicity and convenience in connection, the magnetic core 2 is selected into a cylindrical iron powder core, and one end face of the magnetic core 2 is bonded with an adhesive.

As shown in fig. 1-2, in order to lead out the terminal of the coil 3 for connection and also for connection with an external PCB, a first pin 4 and a second pin 5 connected to each other are provided outside the housing 1, the first pin 4 is respectively provided with two pins which are obliquely inserted into two opposite sides of the top of the housing 1, the first pin 4 is a metal column, the second pin 5 is a flat metal piece and is inserted into two sides of the bottom of the housing 1 to be connected with the first pin 4 correspondingly, and the first pin 4 and the second pin 5 are inserted into the housing 1 for connection and conduction; the utility model discloses a high-voltage connection of inductor, including dustcoat 1, recess 6 and first pin 4, the wiring end that coil 3 drawn forth passes through recess 7 winding is tied up in on the first pin 5, the wiring end of coil 4 is connected to on first pin 4 through recess 6, the first pin 4 of external connection just can be simply connected, and firm in connection is reliable, the distance of being connected with the PCB board has also been increased in drawing forth of second pin 5, fine having avoided producing the injury to the inductor under high-voltage work, the LCP material that dustcoat 1 adopted also has fine heat resistance simultaneously, the inductor can generate heat under long-time work, can not cause the damage of inductor, has the practicality.

The utility model has the advantages that:

the utility model discloses independently wind double coil on the magnetic core, the winding is simple, does not influence the interworking, and the mode of assembly is simple swift moreover, and the dustcoat that the LCP material was made in addition makes more heat-resisting in the inductor use, falls fine protection to the inductor after, the life-span that extension inductor used.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims (6)

1. A common mode inductor, characterized by: including dustcoat, magnetic core and coil, dustcoat integrated into one piece, the circular cavity of formation is inwards drawn in the middle of its bottom, the dustcoat outside still is equipped with interconnect's first pin and second pin, the coil for copper wire winding cladding in form on the magnetic core, the coil includes two windings that separate independently, the wiring end is drawn forth and bind and be connected to at the coil both ends on the first pin, the second pin is used for being connected with outside PCB board.

2. A common mode inductor as claimed in claim 1, wherein: the first pins are respectively provided with two pins which are obliquely inserted at two opposite sides of the top of the outer cover, and the first pins are metal cylindrical pieces.

3. A common mode inductor as claimed in claim 1, wherein: the second pins are flat bent metal pieces and are inserted on two sides of the bottom of the outer cover to be correspondingly connected with the first pins.

4. A common mode inductor as claimed in claim 1, wherein: the side face of the outer cover is provided with a groove, the groove is positioned between the two second pins at the same side, the groove extends to be communicated with the circular cavity, and a wiring end led out by the coil is wound and bound on the first pins through the groove.

5. A common mode inductor as claimed in claim 1, wherein: the magnetic core is a cylindrical iron powder core.

6. A common mode inductor as claimed in claim 1, wherein: the outer cover is made of LCP materials.

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