TWM574327U - Network transformer structure capable of improving voltage withstanding characteristics - Google Patents

Abstract

A network transformer structure capable of improving withstand voltage characteristics, comprising a core and a coil winding formed by a first winding to a fourth winding, the core having a winding portion and a first wire respectively connected to the two ends of the winding portion a flange and a second flange, wherein the first flange and the second flange are disposed in a longitudinal direction of the core. Therefore, the creation can significantly increase the withstand voltage safety distance between the primary side and the secondary side of the network transformer, thereby having better high voltage resistance characteristics, thereby greatly improving the practicality of the creation.

Description

Network transformer structure capable of improving withstand voltage characteristics

This creation relates to a coil component, and more particularly to a network transformer.

According to the network transformer (LAN transformer) is a common device in Ethernet transmission equipment (such as network chips or network transmission lines), mainly providing isolation, impedance matching and reducing noise interference, please refer to the first figure. As shown, it discloses a conventional network transformer having a core 1 and a first winding C1 to a fourth winding C4 disposed above the core 1, the core 1 having a center pillar 11 and a pair of first flanges 12 and second flanges 13 respectively connected to the two ends of the center pillar 11, the top surface of the first flange 12 is respectively provided with a first end electrode 21, a second end electrode 22, The third end electrode 23 and the fourth end electrode 24, the top surface of the second flange 13 is respectively provided with a fifth end electrode 25, a sixth end electrode 26 and a seventh end electrode 27 in the same direction, the first winding The two ends of the second winding C2 are respectively connected to the second end electrode 22 and the fifth end electrode 25, and the third winding C3 is connected to the first end electrode 21 and the fifth end electrode 25 respectively. The two ends are respectively connected to the third end electrode 23 and the seventh end electrode 27, and the two ends of the fourth winding C4 are respectively connected to the fourth end a pole 24 and a sixth terminal electrode 26, and the first winding C1 and the second winding C2 form a winding of a primary side (ie, a primary side or a secondary side) of the network transformer, the third winding C3 and The fourth winding C4 constitutes the winding of the other side (ie, the secondary side or the primary side) of the network transformer, and thus can be used as a network transformer.

Since modern SMD (Surface Mount Device) components mostly have specific dimensions and standardized marking rules, for example, the common dimensional specification code 4532 represents the length (L) and width of this SMD component ( W) is 4.5mm and 3.2mm respectively (this is the metric code, if it is changed to the English code, it is 1812), that is, the existing SMD component has a long side and a short side in the length and width dimensions, Therefore, please refer to the first figure, the first flange 12 and the second flange 13 of the conventional network transformer are disposed in the short side direction of the entire network transformer, if the size of the 4532 is taken as an example, The length L1 of the first flange 12 or the second flange 13 of the network transformer is 3.2 mm, at this time, due to the distance H1 between the primary side and the secondary side of the network transformer (ie, the second terminal electrode The distance between the 22 and the third end electrode 23 is significantly smaller than the length L1 of the first flange 12, so that under the premise that the size of the network transformer is fixed, the pressure safety distance (also called Hi-Pot safe distance, where Hi-Pot is short for High Potential) Small, resulting in poor breakdown voltage of the transformer, therefore, how to improve the above problems, the present case is the creation of technical difficulties wishes to point solution lies.

In view of the above problems with conventional network transformers, the purpose of this creation is to develop a network transformer that can have better high voltage resistance.

In order to achieve the above object, the present invention provides a network transformer structure capable of improving withstand voltage characteristics, comprising: a core having a winding portion and a first flange and a first portion respectively connected to the two ends of the winding portion a second flange having the same size as the second flange, the first flange having an outer side facing away from the winding portion and an opposite inner side, the second flange also having a An outer side surface and an opposite inner side surface, the length of the first flange is greater than a distance between an outer side surface of the first flange and an outer side surface of the second flange, and the iron core is on the upper surface of the first flange a first end electrode, a second end electrode, a third end electrode and a fourth end electrode are disposed along the longitudinal direction of the first flange, and the core is identical to the upper surface of the second flange. a fifth end electrode, a sixth end electrode and a seventh end electrode are sequentially arranged in the direction; a first winding is wound around the winding portion of the core, and the two ends of the first winding are respectively Connecting to the first end electrode and the fifth end electrode; a second winding is wound around the winding portion of the core, and two ends of the second winding are respectively connected to the second end electrode and the fifth end a third winding is wound around the winding portion of the core, and two ends of the third winding are respectively connected to the third end electrode and the seventh end electrode; a fourth winding is wound around The wire is disposed on the winding portion of the core, and the two ends of the fourth wire are respectively connected to the fourth end electrode and the sixth end electrode.

Wherein, the winding portion has a middle portion and two end portions respectively connected to the two ends of the middle portion, and the first flange and the second flange are respectively connected to the two ends of the winding portion, and The width of the end is greater than the width of the midsection.

In this way, the creation can significantly increase the voltage and safety distance of the network transformer, thereby having better high-voltage resistance characteristics, thereby greatly improving the practicality of the creation.

1‧‧‧ iron core

11‧‧‧中柱

12‧‧‧First flange

13‧‧‧second flange

21‧‧‧First-end electrode

22‧‧‧second end electrode

23‧‧‧Terminal electrode

24‧‧‧ fourth end electrode

25‧‧‧ fifth end electrode

26‧‧‧ sixth end electrode

27‧‧‧ seventh end electrode

3‧‧‧ iron core

31‧‧‧Winding Department

311‧‧ mid-section

312‧‧‧ End

32‧‧‧First flange

321‧‧‧ outside side

322‧‧‧ inside

33‧‧‧second flange

331‧‧‧Outside

332‧‧‧ inside

41‧‧‧first end electrode

42‧‧‧second end electrode

43‧‧‧Terminal electrode

44‧‧‧ fourth end electrode

45‧‧‧ fifth end electrode

46‧‧‧ sixth end electrode

47‧‧‧ seventh end electrode

C1‧‧‧First winding

C2‧‧‧second winding

C3‧‧‧ third winding

C4‧‧‧fourth winding

H1‧‧‧ distance

H2‧‧‧ distance

L1‧‧‧ length

L2‧‧‧ length

S1‧‧‧First winding

S2‧‧‧second winding

S3‧‧‧ third winding

S4‧‧‧fourth winding

W2‧‧‧ spacing

The first figure is a top view of a conventional network transformer.

The second figure is a perspective view of one embodiment of the present creation.

The third figure is a top plan view of one embodiment of the present creation.

Please refer to the second and third figures, which are respectively a perspective view and a top view of an embodiment of the network transformer of the present invention. The network transformer includes: a core 3 having a winding portion 31 (ie, a center pillar), a first flange 32 and a second flange 33. As shown in the third figure, the winding portion 31 has a middle portion A midsection portion 311 and two end portions 312 respectively connected to both ends of the middle portion 311, the first flange 32 and the second flange 33 and the two end portions 312 of the winding portion 31, respectively Connected, and the width of the end portion 312 is greater than the width of the middle portion 311. The first flange 32 has the same size as the second flange 33, and the first flange 32 has a back portion. The outer side surface 321 of the 31 and the opposite inner side surface 322. Similarly, the second flange 33 also has an outer side surface 331 and an opposite inner side surface 332, wherein the length L2 of the first flange 32 constitutes the The length dimension of the core 3, the distance W2 between the outer side surface 321 of the first flange 32 and the outer side surface 331 of the second flange 33 constitutes the width dimension of the core 3, that is, the length The length L2 of the first flange 32 is greater than the distance W2 between the outer side surface 321 of the first flange 32 and the outer side surface 331 of the second flange 33, and the core 3 is first convex A first end electrode 41, a second end electrode 42, a third end electrode 43 and a fourth end electrode 44 are disposed on the upper surface of the first flange 32 in the longitudinal direction of the first flange 32. The upper surface of the two flanges 33 is sequentially provided with a fifth terminal electrode 45, a sixth terminal electrode 46 and a seventh terminal electrode 47 in the same direction. More specifically, each of the terminal electrodes may be a conductive adhesive such as silver. Glue, in one embodiment of the present creation, the winding portion 31, the first flange 32, and the second flange 33 of the core 3 may be integrally formed.

a first winding S1, the first winding S1 is wound around the winding portion 31 of the core 3, and two ends of the first winding S1 are respectively connected to the first end electrode 41 and the fifth end Electrode 45.

a second winding S2, the second winding S2 is wound around the winding portion 31 of the core 3, and two ends of the second winding S2 are respectively connected to the second end electrode 42 and the fifth end Electrode 45.

a third winding S3, the third winding S3 is wound around the winding portion 31 of the core 3 The two ends of the third winding S3 are respectively connected to the third terminal electrode 43 and the seventh terminal electrode 47.

a fourth winding S4, the fourth winding S4 is wound around the winding portion 31 of the core 3, and two ends of the fourth winding S4 are respectively connected to the fourth end electrode 44 and the sixth end Electrode 46.

More specifically, each of the above windings of the present invention is wound around the middle portion 311 of the winding portion 31.

With the above structure, the first winding S1 and the second winding S2 can constitute a winding of a primary side (ie, a primary side or a secondary side) of the network transformer of the present invention, and the third winding S3 and the The four windings S4 can then form the windings of the other secondary side (i.e., the secondary side or the primary side).

The beneficial effects of the present invention are explained below: please refer to the second figure, by making the length L2 of the first flange 32 larger than the outer side surface 321 of the first flange 32 and the outer side surface 331 of the second flange 33. The spacing W2 between the two, that is, the first flange 32 (and the second flange 33) of the core 3 is disposed in the longitudinal direction of the network transformer, and thus the size of the network transformer is fixed. Under the premise (for example, the size specifications of the 4532), the length L2 (ie 4.5 mm) of the first flange 32 or the second flange 33 of the network transformer of the present invention is obviously larger than the conventional network. The length L1 (ie 3.2 mm) of the first flange 12 or the second flange 13 of the transformer, so that the distance H2 between the primary side and the secondary side of the network transformer of the present invention can be easily compared It is known that the distance H1 between the primary side and the secondary side of the network transformer is large, and at the same time, by making the width of the end portion 312 of the winding portion 31 larger than the width of the middle portion 311, each of the windings can be made. It is only wound around the middle portion 311 of the winding portion 31, so that the distance between the windings of the different secondary sides and the terminal electrodes can be increased, which is remarkable. Plus voltage transformer safety distance network, to improve the breakdown voltage of the products, and thus can significantly increase the usefulness of the present Creation.

Claims (2)

A network transformer structure capable of improving withstand voltage characteristics, comprising: a core having a winding portion and a first flange and a second flange respectively connected to the two ends of the winding portion, the first flange and The second flange has the same size, the first flange has an outer side facing away from the winding portion and an opposite inner side surface, the second flange also has an outer side surface and an opposite inner side surface, The length of the first flange is greater than the distance between the outer side surface of the first flange and the outer side surface of the second flange, and the core is aligned on the upper surface of the first flange along the length of the first flange a first end electrode, a second end electrode, a third end electrode and a fourth end electrode are disposed, and the core is sequentially provided with a fifth end electrode in the same direction on the upper surface of the second flange. a sixth end electrode and a seventh end electrode; a first winding wound around the winding portion of the core, and two ends of the first winding are respectively connected to the first end electrode and the fifth end electrode a second winding wound around the winding portion of the core, and the two ends of the second winding are divided Connected to the second end electrode and the fifth end electrode; a third winding is wound around the winding portion of the core, and two ends of the third winding are respectively connected to the third end electrode and the seventh The fourth electrode is wound around the winding portion of the core, and the two ends of the fourth winding are respectively connected to the fourth terminal electrode and the sixth terminal electrode. The network transformer structure according to claim 1, wherein the winding portion has a middle portion and two end portions respectively connected to the two ends of the middle portion, the first flange and the first flange The second flanges are respectively connected to the two ends of the winding portion, and the width of the ends is greater than the width of the middle portion.