CN114093628A

CN114093628A - Inductor

Info

Publication number: CN114093628A
Application number: CN202111390278.0A
Authority: CN
Inventors: 林旻泛
Original assignee: Jingshuo Technology Co ltd
Current assignee: Jingshuo Technology Co ltd
Priority date: 2021-10-29
Filing date: 2021-11-23
Publication date: 2022-02-25
Also published as: TWM628932U

Abstract

An inductor comprises four pins, a first conducting wire, a second conducting wire and a magnetic core. The four pins include a first pin, a second pin, a third pin, and a fourth pin. The four pins form a quadrangle when projected on a plane, the first pin and the second pin are positioned on a diagonal of the quadrangle, and the third pin and the fourth pin are positioned on the other diagonal of the quadrangle. Two ends of the first wire are respectively coupled to the first pin and the second pin. Two ends of the second wire are respectively coupled to the third pin and the fourth pin. The magnetic core has a columnar or rectangular parallelepiped structure. The first and second wires are co-wound around the core in opposite directions.

Description

Inductor

Technical Field

The present invention relates to an inductor. More specifically, the wire of the inductor of the present invention has a special winding manner, so as to provide additional technical options for the technical field of the present invention.

Background

Fig. 1A is a schematic diagram of a conventional inductor. Referring to fig. 1A, the conventional inductor 11 includes four pins (pins), which are a pin P11, a pin P12, a pin P13, and a pin P14. The inductor 11 further includes a conductive line L1 (shown by a dotted line), a conductive line L2 (shown by a solid line), and a magnetic core M1, wherein the conductive line L1 and the conductive line L2 are wound around a long side of the magnetic core M1 in opposite directions. If the pins P11, P12, P13 and P14 are projected onto a plane PL1 (e.g., a tangent plane parallel to the axial center of the core M1), a quadrilateral R1 is formed, and the pins P11 and P14 are disposed along a diagonal of the quadrilateral R1, and the pins P12 and P13 are disposed along another diagonal of the quadrilateral R1. The wire L1 is routed from the pin P11 to the pin P12 along the axial direction of the core M1 in a first direction (e.g., clockwise), and the wire L2 is routed from the pin P21 to the pin P22 along the axial direction of the core M1 in a second direction (e.g., counterclockwise) opposite to the first direction.

Fig. 1B is a schematic diagram of signal transmission performed by the conventional inductor 11 shown in fig. 1A. Referring to fig. 1B, in some embodiments, the inductor 11 and an electronic device 12 are located relative to each other as shown in this figure. When the wire L1 and the wire L2 are used to transmit a set of common mode signals composed of the signal S1 and the signal S2 to the electronic device 12 (e.g., an ethernet Physical (PHY) layer device, an ethernet connection device, etc.), and the inductor 11 is used as a common mode inductor, considering the direction of electromotive force generated when the signal S1 and the signal S2 are transmitted on the wires, the signal S1 can be connected to the pin P12 and the pin P13, respectively, so that the two signals are transmitted through the wires and output from the pin P11 and the pin P14 to the electronic device 12, respectively.

Since not all circuit embodiments allow arbitrary placement of the inductor 11 and/or the electronic device 12, in the case that the relative positions of the inductor 11 and the electronic device 12 are as shown in fig. 1A, and the inductor 11 and the electronic device 12 are not moved, the arrangement of the wires and pins of the inductor 11 may cause a path difference between the signal S1 and the signal S2 when the signals are transmitted to the electronic device 12, and further cause a time difference between the signals arriving at the electronic device 12, which may cause a significant disadvantage in the embodiments with strict requirements on signal synchronization.

In view of the above, it is desirable to provide an inductor capable of improving signal synchronization without moving the inductor and the target device of the signal, and a problem to be solved by the present invention is in the field of technology.

Disclosure of Invention

In order to solve at least the above problems, the present invention discloses an inductor element. The inductor element includes: four pins, a first wire, a second wire and a magnetic core. The four pins include a first pin, a second pin, a third pin, and a fourth pin. The four pins can form a quadrangle when projected on a plane, the first pin and the second pin are positioned on a diagonal line of the quadrangle, and the third pin and the fourth pin are positioned on the other diagonal line of the quadrangle. Two ends of the first wire are respectively coupled to the first pin and the second pin. Two ends of the second wire are respectively coupled to the third pin and the fourth pin. The magnetic core may have a columnar or rectangular parallelepiped structure. The first and second wires are co-wound around the core in opposite directions.

As a further improvement of the present invention, the second pin and the third pin are configured to receive a set of differential mode signals, and the first pin and the fourth pin are configured to transmit the set of differential mode signals to an electronic device, so that the inductor is a common mode inductor.

As a further improvement of the present invention, the second pin and the fourth pin are integrated into a common pin.

Compared with the prior art, the invention has the beneficial effects that:

the unique wire winding manner of the inductor can provide another technical option for the field under the condition that the arrangement condition of the position of the inductor and/or the signal target equipment is relatively limited, thereby avoiding or greatly reducing the path difference and the time difference of the transmitted signals.

The main objects, technical means and embodiments of the present invention will be understood by those skilled in the art after referring to the accompanying drawings and the embodiments described later.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description, wherein:

FIG. 1A is a schematic diagram of a projection of a conventional inductor;

FIG. 1B is a schematic diagram of the conventional inductor shown in FIG. 1A for signal transmission;

fig. 2 is a schematic diagram of a projection of an inductor according to one or more embodiments of the present disclosure;

FIG. 3 is a schematic diagram of the inductor shown in FIG. 2 for signal transmission; and

fig. 4 is a schematic diagram of a projection of an inductor according to one or more embodiments of the present disclosure.

The reference numbers illustrate:

11: conventional inductor

12: electronic device

21: inductor

CP 1: common pin

L1, L2: conducting wire

M1, M2: magnetic core

P11, P12, P13, P14, P21, P22, P23, P24: pin

PL1, PL 2: plane surface

R1, R2: quadrilateral shape

S1, S2: signal

Detailed Description

The following examples are provided to illustrate the technical content of the present invention and are not intended to limit the scope of the present invention. It should be noted that in the following embodiments and the accompanying drawings, elements irrelevant to the present invention have been omitted and not shown, and the dimensional relationship between the elements in the drawings is only for easy understanding and is not intended to limit the actual scale. As used herein, the terms "first," "second," "third," "fourth," and the like, as applied to certain elements, are used solely to distinguish one element from another, and are not used to limit the sequential relationship between the elements.

Fig. 2 is a schematic diagram of a projection of an inductor according to one or more embodiments of the present disclosure. The illustration in fig. 2 is for the purpose of describing an embodiment of the present invention only, and is not intended to limit the scope of the present invention. Referring to fig. 2, an inductor 21 may include four pins (i.e., pin P21, pin P22, pin P23, and pin P24), a wire L1 (shown in dashed lines), a wire L2 (shown in solid lines), and a core M2.

As shown in FIG. 2, the four leads may form a quadrilateral R2 when projected onto a plane PL2 (e.g., a tangent plane parallel to the axial direction of the core M2), and the leads P21 and P22 may be located on a diagonal of the quadrilateral R2, and the leads P23 and P24 may be located on another diagonal of the quadrilateral R2. It will be appreciated that the four end points do not coincide with each other when projected on plane PL 2.

More specifically, if the pin P21 of the line L1 is located at the relatively upper left position of the quadrilateral R2, the pin P22 may be located at the relatively lower right position of the plane PL 2. In contrast, if pin P23 of the line L2 is located at the lower left position relative to the plane PL2, the pin P24 may be located at the upper right position relative to the quadrilateral R2.

Two ends of the conductive line L1 can be coupled to the pin P21 and the pin P22, respectively, and two ends of the conductive line L2 can be coupled to the pin P23 and the pin P24, respectively. The lead wire L1 and the lead wire L2 are wound around the core M2 in the opposite directions. The magnetic core M2 may have a column or rectangular parallelepiped structure so that the wire L1 and the wire L2 are wound.

More specifically, the conductive line L1 may be routed from the lead P21 to the lead P22 in a first direction (e.g., clockwise) parallel to the axial center of the core M2, and the conductive line L2 may be routed from the lead P23 to the lead P24 in a second direction (e.g., counterclockwise) opposite to the first direction along the axial center of the core M2.

Fig. 3 is a schematic diagram of the inductor shown in fig. 2 for signal transmission. The illustration in fig. 3 is for the purpose of describing an embodiment of the present invention only, and is not intended to limit the scope of the present invention. Referring to fig. 3, similarly to the situation shown in fig. 1B, the conducting line L1 and the conducting line L2 are also used for transmitting a set of common mode signals composed of the signal S1 and the signal S2 to the electronic device 12, and the inductor 21 is also used as a common mode inductor.

Considering the electromotive forces generated by the signals S1 and S2 transmitted on the wires, the signal S1 is connected to the pin P22 and the pin P23 respectively, so that the two signals are transmitted through the wires and output to the electronic device 12 from the pin P21 and the pin P24 respectively. At this time, similar to the description of fig. 1B, in the case that the inductor 21 and the electronic device 12 are located in a relative relationship as shown in fig. 3 and the inductor 21 and the electronic device 12 are not moved, the arrangement of the wires and the pins of the inductor 21 can effectively avoid or reduce the path difference and the time difference when the signal S1 and the signal S2 reach the electronic device 12, compared to the conventional inductor 11 shown in fig. 1B, so that the method is more suitable for circuit implementation with strict requirements on signal synchronization.

Fig. 4 is a schematic diagram of a projection of an inductor according to one or more embodiments of the present disclosure. The illustration in fig. 4 is for the purpose of describing an embodiment of the present invention only, and is not intended to limit the scope of the present invention. Referring to fig. 4, in some embodiments, the pin 22 and the pin 24 of the inductor 21 may be integrated into a common pin CP1, thereby forming an inductor with three pins. That is, the conductive line L1 and the conductive line L2 may be coupled to the same common pin CP 1.

In summary, the unique wire winding manner of the inductor 21 of the present invention can provide another technical option for the field under the condition that the installation condition of the position of the inductor and/or the signal target device is relatively limited, thereby avoiding or greatly reducing the path difference and time difference of the transmitted signal. Therefore, the technical means of the present invention indeed solve the above technical problems existing in the art.

The above examples are only for illustrating the embodiments of the present invention and illustrating the technical features of the present invention, and are not intended to limit the scope of the present invention. Any arrangement which is obvious to a person skilled in the art, which changes or which is equivalent, is intended to be covered by the present invention.

Claims

1. An inductor, comprising:

four pins including a first pin, a second pin, a third pin, and a fourth pin, wherein the four pins form a quadrilateral when projected onto a plane, and the first pin and the second pin are located on a diagonal of the quadrilateral, and the third pin and the fourth pin are located on another diagonal of the quadrilateral;

a first wire, two ends of which are respectively coupled to the first pin and the second pin;

a second wire, two ends of which are respectively coupled to the third pin and the fourth pin; and

a magnetic core having a columnar or rectangular parallelepiped structure, wherein the first and second wires are wound around the magnetic core in opposite directions.

2. The inductor of claim 1, wherein the second pin and the third pin are to receive a set of differential mode signals, and the first pin and the fourth pin are to transmit the set of differential mode signals to an electronic device, making the inductor a common mode inductor.

3. The inductor of claim 1, wherein the second pin and the fourth pin are integrated into a common pin.